Exception.cpp revision 686e1e23324f1c1f358f29f13f23e57b41c00eaa
1f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 2f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 3f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 4f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * you may not use this file except in compliance with the License. 6f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * You may obtain a copy of the License at 7f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 8f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 10f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * See the License for the specific language governing permissions and 14f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * limitations under the License. 15f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 16f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 17f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Exception handling. 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project#include "Dalvik.h" 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project#include "libdex/DexCatch.h" 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project#include <stdlib.h> 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 25f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectNotes on Exception Handling 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectWe have one fairly sticky issue to deal with: creating the exception stack 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projecttrace. The trouble is that we need the current value of the program 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectcounter for the method now being executed, but that's only held in a local 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvariable or hardware register in the main interpreter loop. 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectThe exception mechanism requires that the current stack trace be associated 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectwith a Throwable at the time the Throwable is constructed. The construction 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectmay or may not be associated with a throw. We have three situations to 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectconsider: 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (1) A Throwable is created with a "new Throwable" statement in the 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project application code, for immediate or deferred use with a "throw" statement. 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (2) The VM throws an exception from within the interpreter core, e.g. 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project after an integer divide-by-zero. 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (3) The VM throws an exception from somewhere deeper down, e.g. while 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project trying to link a class. 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectWe need to have the current value for the PC, which means that for 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectsituation (3) the interpreter loop must copy it to an externally-accessible 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectlocation before handling any opcode that could cause the VM to throw 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectan exception. We can't store it globally, because the various threads 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectwould trample each other. We can't store it in the Thread structure, 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbecause it'll get overwritten as soon as the Throwable constructor starts 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectexecuting. It needs to go on the stack, but our stack frames hold the 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectcaller's *saved* PC, not the current PC. 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectSituation #1 doesn't require special handling. Situation #2 could be dealt 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectwith by passing the PC into the exception creation function. The trick 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectis to solve situation #3 in a way that adds minimal overhead to common 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectoperations. Making it more costly to throw an exception is acceptable. 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectThere are a few ways to deal with this: 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (a) Change "savedPc" to "currentPc" in the stack frame. All of the 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stack logic gets offset by one frame. The current PC is written 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project to the current stack frame when necessary. 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (b) Write the current PC into the current stack frame, but without 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project replacing "savedPc". The JNI local refs pointer, which is only 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project used for native code, can be overloaded to save space. 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (c) In dvmThrowException(), push an extra stack frame on, with the 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project current PC in it. The current PC is written into the Thread struct 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project when necessary, and copied out when the VM throws. 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (d) Before doing something that might throw an exception, push a 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project temporary frame on with the saved PC in it. 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectSolution (a) is the simplest, but breaks Dalvik's goal of mingling native 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectand interpreted stacks. 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectSolution (b) retains the simplicity of (a) without rearranging the stack, 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbut now in some cases we're storing the PC twice, which feels wrong. 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectSolution (c) usually works, because we push the saved PC onto the stack 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbefore the Throwable construction can overwrite the copy in Thread. One 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectway solution (c) could break is: 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project - Interpreter saves the PC 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project - Execute some bytecode, which runs successfully (and alters the saved PC) 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project - Throw an exception before re-saving the PC (i.e in the same opcode) 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectThis is a risk for anything that could cause <clinit> to execute, e.g. 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectexecuting a static method or accessing a static field. Attemping to access 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projecta field that doesn't exist in a class that does exist might cause this. 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectIt may be possible to simply bracket the dvmCallMethod*() functions to 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectsave/restore it. 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectSolution (d) incurs additional overhead, but may have other benefits (e.g. 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectit's easy to find the stack frames that should be removed before storage 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectin the Throwable). 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectCurrent plan is option (b), because it's simple, fast, and doesn't change 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectthe way the stack works. 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project*/ 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* fwd */ 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectstatic bool initException(Object* exception, const char* msg, Object* cause, 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Thread* self); 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Cache pointers to some of the exception classes we use locally. 105686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * 106686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * Note this is NOT called during dexopt optimization. Some of the fields 107686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * are initialized by the verifier (dvmVerifyCodeFlow). 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbool dvmExceptionStartup(void) 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangThrowable = 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindSystemClassNoInit("Ljava/lang/Throwable;"); 113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangRuntimeException = 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindSystemClassNoInit("Ljava/lang/RuntimeException;"); 115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangError = 116f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindSystemClassNoInit("Ljava/lang/Error;"); 117f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangStackTraceElement = 118f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindSystemClassNoInit("Ljava/lang/StackTraceElement;"); 119f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangStackTraceElementArray = 120f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindArrayClass("[Ljava/lang/StackTraceElement;", NULL); 121f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (gDvm.classJavaLangThrowable == NULL || 122f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangStackTraceElement == NULL || 123f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.classJavaLangStackTraceElementArray == NULL) 124f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 125f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("Could not find one or more essential exception classes\n"); 126f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 127f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 128f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 129f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 130f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Find the constructor. Note that, unlike other saved method lookups, 131f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * we're using a Method* instead of a vtable offset. This is because 132f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * constructors don't have vtable offsets. (Also, since we're creating 133f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the object in question, it's impossible for anyone to sub-class it.) 134f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 135f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* meth; 136f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project meth = dvmFindDirectMethodByDescriptor(gDvm.classJavaLangStackTraceElement, 137f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "<init>", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)V"); 138f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (meth == NULL) { 139f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("Unable to find constructor for StackTraceElement\n"); 140f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 141f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 142f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.methJavaLangStackTraceElement_init = meth; 143f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 144f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* grab an offset for the stackData field */ 145f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.offJavaLangThrowable_stackState = 146f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindFieldOffset(gDvm.classJavaLangThrowable, 147f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "stackState", "Ljava/lang/Object;"); 148f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (gDvm.offJavaLangThrowable_stackState < 0) { 149f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("Unable to find Throwable.stackState\n"); 150f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 151f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 152f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 153f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* and one for the message field, in case we want to show it */ 154f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.offJavaLangThrowable_message = 155f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindFieldOffset(gDvm.classJavaLangThrowable, 156f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "detailMessage", "Ljava/lang/String;"); 157f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (gDvm.offJavaLangThrowable_message < 0) { 158f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("Unable to find Throwable.detailMessage\n"); 159f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 160f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 161f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 162f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* and one for the cause field, just 'cause */ 163f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.offJavaLangThrowable_cause = 164f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmFindFieldOffset(gDvm.classJavaLangThrowable, 165f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "cause", "Ljava/lang/Throwable;"); 166f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (gDvm.offJavaLangThrowable_cause < 0) { 167f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("Unable to find Throwable.cause\n"); 168f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 169f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 170f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 171f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return true; 172f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 173f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 174f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 175f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Clean up. 176f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 177f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmExceptionShutdown(void) 178f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 179f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // nothing to do 180f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 181f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 182f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 183f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 184f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Create a Throwable and throw an exception in the current thread (where 185f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "throwing" just means "set the thread's exception pointer"). 186f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 187f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "msg" and/or "cause" may be NULL. 188f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 189f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If we have a bad exception hierarchy -- something in Throwable.<init> 190f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * is missing -- then every attempt to throw an exception will result 191f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * in another exception. Exceptions are generally allowed to "chain" 192f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * to other exceptions, so it's hard to auto-detect this problem. It can 193f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * only happen if the system classes are broken, so it's probably not 194f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * worth spending cycles to detect it. 195f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 196f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We do have one case to worry about: if the classpath is completely 197f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * wrong, we'll go into a death spin during startup because we can't find 198f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the initial class and then we can't find NoClassDefFoundError. We have 199f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * to handle this case. 200f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 201f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * [Do we want to cache pointers to common exception classes?] 202f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 203f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmThrowChainedException(const char* exceptionDescriptor, const char* msg, 204f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* cause) 205f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 206f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ClassObject* excepClass; 207f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 208f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGV("THROW '%s' msg='%s' cause=%s\n", 209f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exceptionDescriptor, msg, 210f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (cause != NULL) ? cause->clazz->descriptor : "(none)"); 211f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 212f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (gDvm.initializing) { 213f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (++gDvm.initExceptionCount >= 2) { 214f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("Too many exceptions during init (failed on '%s' '%s')\n", 215f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exceptionDescriptor, msg); 216f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmAbort(); 217f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 218f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 219f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 220f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project excepClass = dvmFindSystemClass(exceptionDescriptor); 221f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (excepClass == NULL) { 222f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 223f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We couldn't find the exception class. The attempt to find a 224f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * nonexistent class should have raised an exception. If no 225f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * exception is currently raised, then we're pretty clearly unable 226f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * to throw ANY sort of exception, and we need to pack it in. 227f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 228f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If we were able to throw the "class load failed" exception, 229f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * stick with that. Ideally we'd stuff the original exception 230f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * into the "cause" field, but since we can't find it we can't 231f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * do that. The exception class name should be in the "message" 232f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * field. 233f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 234f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmCheckException(dvmThreadSelf())) { 235f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("FATAL: unable to throw exception (failed on '%s' '%s')\n", 236f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exceptionDescriptor, msg); 237f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmAbort(); 238f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 239f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return; 240f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 241f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 242f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmThrowChainedExceptionByClass(excepClass, msg, cause); 243f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 244f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 245f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 246f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Start/continue throwing process now that we have a class reference. 247f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 248f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmThrowChainedExceptionByClass(ClassObject* excepClass, const char* msg, 249f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* cause) 250f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 251f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Thread* self = dvmThreadSelf(); 252f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* exception; 253f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 254f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* make sure the exception is initialized */ 255f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmIsClassInitialized(excepClass) && !dvmInitClass(excepClass)) { 256f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("ERROR: unable to initialize exception class '%s'\n", 257f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project excepClass->descriptor); 258f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (strcmp(excepClass->descriptor, "Ljava/lang/InternalError;") == 0) 259f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmAbort(); 260f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmThrowChainedException("Ljava/lang/InternalError;", 261f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "failed to init original exception class", cause); 262f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return; 263f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 264f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 265f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exception = dvmAllocObject(excepClass, ALLOC_DEFAULT); 266f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (exception == NULL) { 267f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 268f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We're in a lot of trouble. We might be in the process of 269f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * throwing an out-of-memory exception, in which case the 270f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * pre-allocated object will have been thrown when our object alloc 271f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * failed. So long as there's an exception raised, return and 272f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * allow the system to try to recover. If not, something is broken 273f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * and we need to bail out. 274f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 275f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmCheckException(self)) 276f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 277f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGE("FATAL: unable to allocate exception '%s' '%s'\n", 278f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project excepClass->descriptor, msg != NULL ? msg : "(no msg)"); 279f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmAbort(); 280f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 281f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 282f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 283f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Init the exception. 284f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 285f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (gDvm.optimizing) { 286f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* need the exception object, but can't invoke interpreted code */ 287f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGV("Skipping init of exception %s '%s'\n", 288f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project excepClass->descriptor, msg); 289f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 290f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(excepClass == exception->clazz); 291f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!initException(exception, msg, cause, self)) { 292f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 293f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Whoops. If we can't initialize the exception, we can't use 294f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * it. If there's an exception already set, the constructor 295f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * probably threw an OutOfMemoryError. 296f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 297f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmCheckException(self)) { 298f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 299f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We're required to throw something, so we just 300f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * throw the pre-constructed internal error. 301f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 302f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception = gDvm.internalErrorObj; 303f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 304f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 305f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 306f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 307f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 308f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception = exception; 309f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 310f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbail: 311f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc(exception, self); 312f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 313f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 314f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 315f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Throw the named exception using the dotted form of the class 316f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * descriptor as the exception message, and with the specified cause. 317f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 318f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmThrowChainedExceptionWithClassMessage(const char* exceptionDescriptor, 319f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const char* messageDescriptor, Object* cause) 320f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 321f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project char* message = dvmDescriptorToDot(messageDescriptor); 322f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 323f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmThrowChainedException(exceptionDescriptor, message, cause); 324f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project free(message); 325f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 326f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 327f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 328f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Like dvmThrowExceptionWithMessageFromDescriptor, but take a 329f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * class object instead of a name. 330f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 331f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmThrowExceptionByClassWithClassMessage(ClassObject* exceptionClass, 332f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const char* messageDescriptor) 333f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 334f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project char* message = dvmDescriptorToName(messageDescriptor); 335f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 336f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmThrowExceptionByClass(exceptionClass, message); 337f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project free(message); 338f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 339f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 340f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 341f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Initialize an exception with an appropriate constructor. 342f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 343f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "exception" is the exception object to initialize. 344f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Either or both of "msg" and "cause" may be null. 345f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "self" is dvmThreadSelf(), passed in so we don't have to look it up again. 346f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 347f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If the process of initializing the exception causes another 348f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * exception (e.g., OutOfMemoryError) to be thrown, return an error 349f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * and leave self->exception intact. 350f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 351f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectstatic bool initException(Object* exception, const char* msg, Object* cause, 352f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Thread* self) 353f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 354f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project enum { 355f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project kInitUnknown, 356f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project kInitNoarg, 357f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project kInitMsg, 358f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project kInitMsgThrow, 359f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project kInitThrow 360f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } initKind = kInitUnknown; 361f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* initMethod = NULL; 362f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ClassObject* excepClass = exception->clazz; 363f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StringObject* msgStr = NULL; 364f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project bool result = false; 365f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project bool needInitCause = false; 366f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 367f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(self != NULL); 368f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(self->exception == NULL); 369f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 370f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* if we have a message, create a String */ 371f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (msg == NULL) 372f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project msgStr = NULL; 373f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project else { 374f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project msgStr = dvmCreateStringFromCstr(msg, ALLOC_DEFAULT); 375f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (msgStr == NULL) { 376f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("Could not allocate message string \"%s\" while " 377f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "throwing internal exception (%s)\n", 378f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project msg, excepClass->descriptor); 379f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 380f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 381f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 382f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 383686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden if (cause != NULL) { 384686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden if (!dvmInstanceof(cause->clazz, gDvm.classJavaLangThrowable)) { 385686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden LOGE("Tried to init exception with cause '%s'\n", 386686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden cause->clazz->descriptor); 387686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden dvmAbort(); 388686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden } 389686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden } 390686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden 391f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 392f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The Throwable class has four public constructors: 393f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (1) Throwable() 394f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (2) Throwable(String message) 395f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (3) Throwable(String message, Throwable cause) (added in 1.4) 396f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (4) Throwable(Throwable cause) (added in 1.4) 397f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 398f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The first two are part of the original design, and most exception 399f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * classes should support them. The third prototype was used by 400f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * individual exceptions. e.g. ClassNotFoundException added it in 1.2. 401f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The general "cause" mechanism was added in 1.4. Some classes, 402f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * such as IllegalArgumentException, initially supported the first 403f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * two, but added the second two in a later release. 404f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 405f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Exceptions may be picky about how their "cause" field is initialized. 406f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If you call ClassNotFoundException(String), it may choose to 407f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * initialize its "cause" field to null. Doing so prevents future 408f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * calls to Throwable.initCause(). 409f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 410f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * So, if "cause" is not NULL, we need to look for a constructor that 411f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * takes a throwable. If we can't find one, we fall back on calling 412f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * #1/#2 and making a separate call to initCause(). Passing a null ref 413f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * for "message" into Throwable(String, Throwable) is allowed, but we 414f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * prefer to use the Throwable-only version because it has different 415f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * behavior. 416f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 417f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * java.lang.TypeNotPresentException is a strange case -- it has #3 but 418f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * not #2. (Some might argue that the constructor is actually not #3, 419f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * because it doesn't take the message string as an argument, but it 420f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * has the same effect and we can work with it here.) 421f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 422f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (cause == NULL) { 423f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (msgStr == NULL) { 424f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", "()V"); 425f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitNoarg; 426f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 427f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", 428f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/String;)V"); 429f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initMethod != NULL) { 430f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitMsg; 431f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 432f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* no #2, try #3 */ 433f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", 434f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/String;Ljava/lang/Throwable;)V"); 435f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initMethod != NULL) 436f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitMsgThrow; 437f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 438f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 439f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 440f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (msgStr == NULL) { 441f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", 442f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/Throwable;)V"); 443f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initMethod != NULL) { 444f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitThrow; 445f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 446f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", "()V"); 447f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitNoarg; 448f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project needInitCause = true; 449f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 450f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 451f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", 452f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/String;Ljava/lang/Throwable;)V"); 453f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initMethod != NULL) { 454f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitMsgThrow; 455f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 456f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(excepClass, "<init>", 457f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/String;)V"); 458f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initKind = kInitMsg; 459f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project needInitCause = true; 460f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 461f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 462f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 463f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 464f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initMethod == NULL) { 465f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 466f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We can't find the desired constructor. This can happen if a 467f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * subclass of java/lang/Throwable doesn't define an expected 468f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * constructor, e.g. it doesn't provide one that takes a string 469f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * when a message has been provided. 470f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 471f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("WARNING: exception class '%s' missing constructor " 472f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(msg='%s' kind=%d)\n", 473f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project excepClass->descriptor, msg, initKind); 474f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(strcmp(excepClass->descriptor, 475f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "Ljava/lang/RuntimeException;") != 0); 476f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmThrowChainedException("Ljava/lang/RuntimeException;", 477f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "re-throw on exception class missing constructor", NULL); 478f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 479f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 480f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 481f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 482f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Call the constructor with the appropriate arguments. 483f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 484f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project JValue unused; 485f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project switch (initKind) { 486f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project case kInitNoarg: 487f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGVV("+++ exc noarg (ic=%d)\n", needInitCause); 488f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, initMethod, exception, &unused); 489f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 490f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project case kInitMsg: 491f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGVV("+++ exc msg (ic=%d)\n", needInitCause); 492f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, initMethod, exception, &unused, msgStr); 493f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 494f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project case kInitThrow: 495f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGVV("+++ exc throw"); 496f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(!needInitCause); 497f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, initMethod, exception, &unused, cause); 498f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 499f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project case kInitMsgThrow: 500f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGVV("+++ exc msg+throw"); 501f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(!needInitCause); 502f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, initMethod, exception, &unused, msgStr, cause); 503f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 504f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project default: 505f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(false); 506f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 507f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 508f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 509f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 510f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * It's possible the constructor has thrown an exception. If so, we 511f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * return an error and let our caller deal with it. 512f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 513f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (self->exception != NULL) { 514f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("Exception thrown (%s) while throwing internal exception (%s)\n", 515f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception->clazz->descriptor, exception->clazz->descriptor); 516f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 517f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 518f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 519f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 520f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If this exception was caused by another exception, and we weren't 521f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * able to find a cause-setting constructor, set the "cause" field 522f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * with an explicit call. 523f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 524f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (needInitCause) { 525f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* initCause; 526f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initCause = dvmFindVirtualMethodHierByDescriptor(excepClass, "initCause", 527f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/Throwable;)Ljava/lang/Throwable;"); 528f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initCause != NULL) { 529f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, initCause, exception, &unused, cause); 530f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (self->exception != NULL) { 531f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* initCause() threw an exception; return an error and 532f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * let the caller deal with it. 533f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 534f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("Exception thrown (%s) during initCause() " 535f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "of internal exception (%s)\n", 536f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception->clazz->descriptor, 537f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exception->clazz->descriptor); 538f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 539f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 540f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 541f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("WARNING: couldn't find initCause in '%s'\n", 542f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project excepClass->descriptor); 543f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 544f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 545f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 546f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 547f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result = true; 548f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 549f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbail: 550f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc((Object*) msgStr, self); // NULL is ok 551f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 552f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 553f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 554f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 555f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 556f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Clear the pending exception and the "initExceptionCount" counter. This 557f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * is used by the optimization and verification code, which has to run with 558f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "initializing" set to avoid going into a death-spin if the "class not 559f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * found" exception can't be found. 560f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 561f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * This can also be called when the VM is in a "normal" state, e.g. when 562f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * verifying classes that couldn't be verified at optimization time. The 563f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * reset of initExceptionCount should be harmless in that case. 564f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 565f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmClearOptException(Thread* self) 566f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 567f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception = NULL; 568f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.initExceptionCount = 0; 569f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 570f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 571f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 572f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns "true" if this is a "checked" exception, i.e. it's a subclass 573f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * of Throwable (assumed) but not a subclass of RuntimeException or Error. 574f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 575f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbool dvmIsCheckedException(const Object* exception) 576f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 577f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmInstanceof(exception->clazz, gDvm.classJavaLangError) || 578f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmInstanceof(exception->clazz, gDvm.classJavaLangRuntimeException)) 579f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 580f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 581f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 582f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return true; 583f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 584f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 585f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 586f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 587f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Wrap the now-pending exception in a different exception. This is useful 588f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * for reflection stuff that wants to hand a checked exception back from a 589f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * method that doesn't declare it. 590f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 591f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If something fails, an (unchecked) exception related to that failure 592f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * will be pending instead. 593f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 594f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmWrapException(const char* newExcepStr) 595f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 596f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Thread* self = dvmThreadSelf(); 597f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* origExcep; 598f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ClassObject* iteClass; 599f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 600f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project origExcep = dvmGetException(self); 601f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmAddTrackedAlloc(origExcep, self); // don't let the GC free it 602f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 603f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmClearException(self); // clear before class lookup 604f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project iteClass = dvmFindSystemClass(newExcepStr); 605f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iteClass != NULL) { 606f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* iteExcep; 607f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* initMethod; 608f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 609f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project iteExcep = dvmAllocObject(iteClass, ALLOC_DEFAULT); 610f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iteExcep != NULL) { 611f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project initMethod = dvmFindDirectMethodByDescriptor(iteClass, "<init>", 612f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "(Ljava/lang/Throwable;)V"); 613f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (initMethod != NULL) { 614f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project JValue unused; 615f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, initMethod, iteExcep, &unused, 616f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project origExcep); 617f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 618f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* if <init> succeeded, replace the old exception */ 619f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmCheckException(self)) 620f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmSetException(self, iteExcep); 621f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 622f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc(iteExcep, NULL); 623f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 624f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* if initMethod doesn't exist, or failed... */ 625f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmCheckException(self)) 626f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmSetException(self, origExcep); 627f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 628f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* leave OutOfMemoryError pending */ 629f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 630f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 631f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* leave ClassNotFoundException pending */ 632f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 633f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 634f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(dvmCheckException(self)); 635f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc(origExcep, self); 636f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 637f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 638f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 639686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * Get the "cause" field from an exception. 640686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * 641686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * The Throwable class initializes the "cause" field to "this" to 642686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * differentiate between being initialized to null and never being 643686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden * initialized. We check for that here and convert it to NULL. 644686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden */ 645686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFaddenObject* dvmGetExceptionCause(const Object* exception) 646686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden{ 647686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden if (!dvmInstanceof(exception->clazz, gDvm.classJavaLangThrowable)) { 648686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden LOGE("Tried to get cause from object of type '%s'\n", 649686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden exception->clazz->descriptor); 650686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden dvmAbort(); 651686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden } 652686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden Object* cause = 653686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden dvmGetFieldObject(exception, gDvm.offJavaLangThrowable_cause); 654686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden if (cause == exception) 655686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden return NULL; 656686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden else 657686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden return cause; 658686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden} 659686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden 660686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden/* 661f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Print the stack trace of the current exception on stderr. This is called 662f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * from the JNI ExceptionDescribe call. 663f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 664f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * For consistency we just invoke the Throwable printStackTrace method, 665f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * which might be overridden in the exception object. 666f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 667f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Exceptions thrown during the course of printing the stack trace are 668f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * ignored. 669f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 670f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmPrintExceptionStackTrace(void) 671f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 672f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Thread* self = dvmThreadSelf(); 673f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* exception; 674f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* printMethod; 675f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 676f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exception = self->exception; 677f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (exception == NULL) 678f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return; 679f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 680f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception = NULL; 681f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project printMethod = dvmFindVirtualMethodHierByDescriptor(exception->clazz, 682f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "printStackTrace", "()V"); 683f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (printMethod != NULL) { 684f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project JValue unused; 685f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(self, printMethod, exception, &unused); 686f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 687f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("WARNING: could not find printStackTrace in %s\n", 688f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exception->clazz->descriptor); 689f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 690f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 691f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (self->exception != NULL) { 692f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI("NOTE: exception thrown while printing stack trace: %s\n", 693f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception->clazz->descriptor); 694f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 695f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 696f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception = exception; 697f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 698f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 699f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 700f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Search the method's list of exceptions for a match. 701f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 702f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns the offset of the catch block on success, or -1 on failure. 703f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 704f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectstatic int findCatchInMethod(Thread* self, const Method* method, int relPc, 705f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ClassObject* excepClass) 706f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 707f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 708f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Need to clear the exception before entry. Otherwise, dvmResolveClass 709f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * might think somebody threw an exception while it was loading a class. 710f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 711f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(!dvmCheckException(self)); 712f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(!dvmIsNativeMethod(method)); 713f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 714f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGVV("findCatchInMethod %s.%s excep=%s depth=%d\n", 715f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project method->clazz->descriptor, method->name, excepClass->descriptor, 716f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmComputeExactFrameDepth(self->curFrame)); 717f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 718f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project DvmDex* pDvmDex = method->clazz->pDvmDex; 719f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const DexCode* pCode = dvmGetMethodCode(method); 720f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project DexCatchIterator iterator; 721f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 722f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dexFindCatchHandler(&iterator, pCode, relPc)) { 723f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (;;) { 724f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project DexCatchHandler* handler = dexCatchIteratorNext(&iterator); 725f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 726f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (handler == NULL) { 727f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 728f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 729f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 730f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (handler->typeIdx == kDexNoIndex) { 731f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* catch-all */ 732f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGV("Match on catch-all block at 0x%02x in %s.%s for %s\n", 733f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project relPc, method->clazz->descriptor, 734f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project method->name, excepClass->descriptor); 735f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return handler->address; 736f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 737f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 738f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ClassObject* throwable = 739f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmDexGetResolvedClass(pDvmDex, handler->typeIdx); 740f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (throwable == NULL) { 741f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 742f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * TODO: this behaves badly if we run off the stack 743f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * while trying to throw an exception. The problem is 744f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * that, if we're in a class loaded by a class loader, 745f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the call to dvmResolveClass has to ask the class 746f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * loader for help resolving any previously-unresolved 747f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * classes. If this particular class loader hasn't 748f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * resolved StackOverflowError, it will call into 749f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * interpreted code, and blow up. 750f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 751f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We currently replace the previous exception with 752f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the StackOverflowError, which means they won't be 753f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * catching it *unless* they explicitly catch 754f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * StackOverflowError, in which case we'll be unable 755f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * to resolve the class referred to by the "catch" 756f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * block. 757f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 758f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We end up getting a huge pile of warnings if we do 759f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * a simple synthetic test, because this method gets 760f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * called on every stack frame up the tree, and it 761f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * fails every time. 762f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 763f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * This eventually bails out, effectively becoming an 764f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * uncatchable exception, so other than the flurry of 765f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * warnings it's not really a problem. Still, we could 766f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * probably handle this better. 767f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 768f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throwable = dvmResolveClass(method->clazz, handler->typeIdx, 769f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project true); 770f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (throwable == NULL) { 771f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 772f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We couldn't find the exception they wanted in 773f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * our class files (or, perhaps, the stack blew up 774f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * while we were querying a class loader). Cough 775f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * up a warning, then move on to the next entry. 776f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Keep the exception status clear. 777f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 778f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("Could not resolve class ref'ed in exception " 779f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project "catch list (class index %d, exception %s)\n", 780f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project handler->typeIdx, 781f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (self->exception != NULL) ? 782f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception->clazz->descriptor : "(none)"); 783f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmClearException(self); 784f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project continue; 785f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 786f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 787f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 788f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project //LOGD("ADDR MATCH, check %s instanceof %s\n", 789f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // excepClass->descriptor, pEntry->excepClass->descriptor); 790f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 791f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmInstanceof(excepClass, throwable)) { 792f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGV("Match on catch block at 0x%02x in %s.%s for %s\n", 793f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project relPc, method->clazz->descriptor, 794f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project method->name, excepClass->descriptor); 795f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return handler->address; 796f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 797f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 798f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 799f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 800f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGV("No matching catch block at 0x%02x in %s for %s\n", 801f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project relPc, method->name, excepClass->descriptor); 802f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return -1; 803f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 804f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 805f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 806f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Find a matching "catch" block. "pc" is the relative PC within the 807f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * current method, indicating the offset from the start in 16-bit units. 808f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 809f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns the offset to the catch block, or -1 if we run up against a 810f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * break frame without finding anything. 811f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 812f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The class resolution stuff we have to do while evaluating the "catch" 813f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * blocks could cause an exception. The caller should clear the exception 814f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * before calling here and restore it after. 815f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 816f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Sets *newFrame to the frame pointer of the frame with the catch block. 817f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If "scanOnly" is false, self->curFrame is also set to this value. 818f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 819f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectint dvmFindCatchBlock(Thread* self, int relPc, Object* exception, 820f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project bool scanOnly, void** newFrame) 821f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 822f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project void* fp = self->curFrame; 823f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int catchAddr = -1; 824f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 825f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(!dvmCheckException(self)); 826f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 827f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project while (true) { 828f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StackSaveArea* saveArea = SAVEAREA_FROM_FP(fp); 829f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project catchAddr = findCatchInMethod(self, saveArea->method, relPc, 830f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exception->clazz); 831f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (catchAddr >= 0) 832f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 833f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 834f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 835f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Normally we'd check for ACC_SYNCHRONIZED methods and unlock 836f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * them as we unroll. Dalvik uses what amount to generated 837f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "finally" blocks to take care of this for us. 838f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 839f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 840f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* output method profiling info */ 841f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!scanOnly) { 842f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project TRACE_METHOD_UNROLL(self, saveArea->method); 843f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 844f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 845f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 846f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Move up one frame. If the next thing up is a break frame, 847f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * break out now so we're left unrolled to the last method frame. 848f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We need to point there so we can roll up the JNI local refs 849f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if this was a native method. 850f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 851f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(saveArea->prevFrame != NULL); 852f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmIsBreakFrame(saveArea->prevFrame)) { 853f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!scanOnly) 854f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; // bail with catchAddr == -1 855f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 856f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 857f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We're scanning for the debugger. It needs to know if this 858f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * exception is going to be caught or not, and we need to figure 859f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * out if it will be caught *ever* not just between the current 860f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * position and the next break frame. We can't tell what native 861f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * code is going to do, so we assume it never catches exceptions. 862f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 863f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Start by finding an interpreted code frame. 864f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 865f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = saveArea->prevFrame; // this is the break frame 866f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project saveArea = SAVEAREA_FROM_FP(fp); 867f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = saveArea->prevFrame; // this may be a good one 868f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project while (fp != NULL) { 869f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmIsBreakFrame(fp)) { 870f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project saveArea = SAVEAREA_FROM_FP(fp); 871f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmIsNativeMethod(saveArea->method)) 872f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 873f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 874f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 875f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = SAVEAREA_FROM_FP(fp)->prevFrame; 876f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 877f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (fp == NULL) 878f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; // bail with catchAddr == -1 879f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 880f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 881f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Now fp points to the "good" frame. When the interp code 882f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * invoked the native code, it saved a copy of its current PC 883f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * into xtra.currentPc. Pull it out of there. 884f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 885f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project relPc = 886f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project saveArea->xtra.currentPc - SAVEAREA_FROM_FP(fp)->method->insns; 887f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 888f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = saveArea->prevFrame; 889f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 890f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* savedPc in was-current frame goes with method in now-current */ 891f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project relPc = saveArea->savedPc - SAVEAREA_FROM_FP(fp)->method->insns; 892f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 893f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 894f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 895f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!scanOnly) 896f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->curFrame = fp; 897f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 898f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 899f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The class resolution in findCatchInMethod() could cause an exception. 900f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Clear it to be safe. 901f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 902f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project self->exception = NULL; 903f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 904f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *newFrame = fp; 905f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return catchAddr; 906f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 907f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 908f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 909f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We have to carry the exception's stack trace around, but in many cases 910f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * it will never be examined. It makes sense to keep it in a compact, 911f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * VM-specific object, rather than an array of Objects with strings. 912f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 913f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Pass in the thread whose stack we're interested in. If "thread" is 914f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * not self, the thread must be suspended. This implies that the thread 915f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * list lock is held, which means we can't allocate objects or we risk 916f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * jamming the GC. So, we allow this function to return different formats. 917f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (This shouldn't be called directly -- see the inline functions in the 918f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * header file.) 919f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 920f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If "wantObject" is true, this returns a newly-allocated Object, which is 921f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * presently an array of integers, but could become something else in the 922f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * future. If "wantObject" is false, return plain malloc data. 923f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 924f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * NOTE: if we support class unloading, we will need to scan the class 925f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * object references out of these arrays. 926f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 927f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid* dvmFillInStackTraceInternal(Thread* thread, bool wantObject, int* pCount) 928f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 929f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ArrayObject* stackData = NULL; 930f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int* simpleData = NULL; 931f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project void* fp; 932f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project void* startFp; 933f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int stackDepth; 934f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int* intPtr; 935f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 936f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (pCount != NULL) 937f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *pCount = 0; 938f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = thread->curFrame; 939f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 940f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(thread == dvmThreadSelf() || dvmIsSuspended(thread)); 941f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 942f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 943f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We're looking at a stack frame for code running below a Throwable 944f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * constructor. We want to remove the Throwable methods and the 945f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * superclass initializations so the user doesn't see them when they 946f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * read the stack dump. 947f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 948f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * TODO: this just scrapes off the top layers of Throwable. Might not do 949f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the right thing if we create an exception object or cause a VM 950f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * exception while in a Throwable method. 951f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 952f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project while (fp != NULL) { 953f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const StackSaveArea* saveArea = SAVEAREA_FROM_FP(fp); 954f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const Method* method = saveArea->method; 955f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 956f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmIsBreakFrame(fp)) 957f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 958f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmInstanceof(method->clazz, gDvm.classJavaLangThrowable)) 959f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 960f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project //LOGD("EXCEP: ignoring %s.%s\n", 961f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // method->clazz->descriptor, method->name); 962f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = saveArea->prevFrame; 963f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 964f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project startFp = fp; 965f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 966f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 967f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Compute the stack depth. 968f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 969f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackDepth = 0; 970f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project while (fp != NULL) { 971f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const StackSaveArea* saveArea = SAVEAREA_FROM_FP(fp); 972f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 973f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmIsBreakFrame(fp)) 974f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackDepth++; 975f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 976f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(fp != saveArea->prevFrame); 977f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = saveArea->prevFrame; 978f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 979f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project //LOGD("EXCEP: stack depth is %d\n", stackDepth); 980f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 981f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!stackDepth) 982f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 983f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 984f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 985f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We need to store a pointer to the Method and the program counter. 986f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We have 4-byte pointers, so we use '[I'. 987f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 988f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (wantObject) { 989f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(sizeof(Method*) == 4); 990f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackData = dvmAllocPrimitiveArray('I', stackDepth*2, ALLOC_DEFAULT); 991f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (stackData == NULL) { 992f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(dvmCheckException(dvmThreadSelf())); 993f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 994f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 995f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project intPtr = (int*) stackData->contents; 996f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 997f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* array of ints; first entry is stack depth */ 998f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(sizeof(Method*) == sizeof(int)); 999f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project simpleData = (int*) malloc(sizeof(int) * stackDepth*2); 1000f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (simpleData == NULL) 1001f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 1002f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1003f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(pCount != NULL); 1004f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project intPtr = simpleData; 1005f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1006f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (pCount != NULL) 1007f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *pCount = stackDepth; 1008f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1009f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = startFp; 1010f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project while (fp != NULL) { 1011f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const StackSaveArea* saveArea = SAVEAREA_FROM_FP(fp); 1012f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const Method* method = saveArea->method; 1013f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1014f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmIsBreakFrame(fp)) { 1015f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project //LOGD("EXCEP keeping %s.%s\n", method->clazz->descriptor, 1016f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // method->name); 1017f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1018f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *intPtr++ = (int) method; 1019f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmIsNativeMethod(method)) { 1020f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *intPtr++ = 0; /* no saved PC for native methods */ 1021f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 1022f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(saveArea->xtra.currentPc >= method->insns && 1023f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project saveArea->xtra.currentPc < 1024f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project method->insns + dvmGetMethodInsnsSize(method)); 1025f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *intPtr++ = (int) (saveArea->xtra.currentPc - method->insns); 1026f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1027f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1028f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackDepth--; // for verification 1029f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1030f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1031f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(fp != saveArea->prevFrame); 1032f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fp = saveArea->prevFrame; 1033f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1034f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project assert(stackDepth == 0); 1035f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1036f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbail: 1037f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (wantObject) { 1038f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc((Object*) stackData, dvmThreadSelf()); 1039f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return stackData; 1040f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 1041f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return simpleData; 1042f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1043f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 1044f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1045f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1046f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 1047f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Given an Object previously created by dvmFillInStackTrace(), use the 1048f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * contents of the saved stack trace to generate an array of 1049f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * java/lang/StackTraceElement objects. 1050f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 1051f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The returned array is not added to the "local refs" list. 1052f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1053f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectArrayObject* dvmGetStackTrace(const Object* ostackData) 1054f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 1055f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const ArrayObject* stackData = (const ArrayObject*) ostackData; 1056f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const int* intVals; 1057f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int i, stackSize; 1058f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1059f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackSize = stackData->length / 2; 1060f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project intVals = (const int*) stackData->contents; 1061f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return dvmGetStackTraceRaw(intVals, stackSize); 1062f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 1063f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1064f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 1065f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Generate an array of StackTraceElement objects from the raw integer 1066f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * data encoded by dvmFillInStackTrace(). 1067f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 1068f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * "intVals" points to the first {method,pc} pair. 1069f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 1070f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The returned array is not added to the "local refs" list. 1071f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1072f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source ProjectArrayObject* dvmGetStackTraceRaw(const int* intVals, int stackDepth) 1073f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 1074f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ArrayObject* steArray = NULL; 1075f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object** stePtr; 1076f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int i; 1077f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1078f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* init this if we haven't yet */ 1079f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!dvmIsClassInitialized(gDvm.classJavaLangStackTraceElement)) 1080f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmInitClass(gDvm.classJavaLangStackTraceElement); 1081f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1082f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* allocate a StackTraceElement array */ 1083f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project steArray = dvmAllocArray(gDvm.classJavaLangStackTraceElementArray, 1084f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackDepth, kObjectArrayRefWidth, ALLOC_DEFAULT); 1085f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (steArray == NULL) 1086f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 1087f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stePtr = (Object**) steArray->contents; 1088f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1089f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 1090f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Allocate and initialize a StackTraceElement for each stack frame. 1091f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * We use the standard constructor to configure the object. 1092f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1093f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (i = 0; i < stackDepth; i++) { 1094f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* ste; 1095f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* meth; 1096f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StringObject* className; 1097f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StringObject* methodName; 1098f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StringObject* fileName; 1099f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int lineNumber, pc; 1100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const char* sourceFile; 1101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project char* dotName; 1102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ste = dvmAllocObject(gDvm.classJavaLangStackTraceElement,ALLOC_DEFAULT); 1104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (ste == NULL) 1105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 1106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project meth = (Method*) *intVals++; 1108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project pc = *intVals++; 1109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (pc == -1) // broken top frame? 1111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project lineNumber = 0; 1112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project else 1113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project lineNumber = dvmLineNumFromPC(meth, pc); 1114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dotName = dvmDescriptorToDot(meth->clazz->descriptor); 1116f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project className = dvmCreateStringFromCstr(dotName, ALLOC_DEFAULT); 1117f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project free(dotName); 1118f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1119f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project methodName = dvmCreateStringFromCstr(meth->name, ALLOC_DEFAULT); 1120f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project sourceFile = dvmGetMethodSourceFile(meth); 1121f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (sourceFile != NULL) 1122f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fileName = dvmCreateStringFromCstr(sourceFile, ALLOC_DEFAULT); 1123f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project else 1124f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project fileName = NULL; 1125f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1126f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 1127f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Invoke: 1128f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * public StackTraceElement(String declaringClass, String methodName, 1129f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * String fileName, int lineNumber) 1130f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (where lineNumber==-2 means "native") 1131f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1132f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project JValue unused; 1133f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmCallMethod(dvmThreadSelf(), gDvm.methJavaLangStackTraceElement_init, 1134f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ste, &unused, className, methodName, fileName, lineNumber); 1135f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1136f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc(ste, NULL); 1137f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc((Object*) className, NULL); 1138f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc((Object*) methodName, NULL); 1139f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc((Object*) fileName, NULL); 1140f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1141f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmCheckException(dvmThreadSelf())) 1142f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project goto bail; 1143f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1144f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project *stePtr++ = ste; 1145f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1146f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1147f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectbail: 1148f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmReleaseTrackedAlloc((Object*) steArray, NULL); 1149f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return steArray; 1150f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 1151f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1152f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 1153f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Dump the contents of a raw stack trace to the log. 1154f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1155f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmLogRawStackTrace(const int* intVals, int stackDepth) 1156f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 1157f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int i; 1158f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1159f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /* 1160f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Run through the array of stack frame data. 1161f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1162f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (i = 0; i < stackDepth; i++) { 1163f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Method* meth; 1164f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int lineNumber, pc; 1165f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const char* sourceFile; 1166f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project char* dotName; 1167f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1168f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project meth = (Method*) *intVals++; 1169f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project pc = *intVals++; 1170f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1171f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (pc == -1) // broken top frame? 1172f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project lineNumber = 0; 1173f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project else 1174f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project lineNumber = dvmLineNumFromPC(meth, pc); 1175f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1176f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // probably don't need to do this, but it looks nicer 1177f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dotName = dvmDescriptorToDot(meth->clazz->descriptor); 1178f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1179f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (dvmIsNativeMethod(meth)) { 1180f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI("\tat %s.%s(Native Method)\n", dotName, meth->name); 1181f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 1182f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI("\tat %s.%s(%s:%d)\n", 1183f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dotName, meth->name, dvmGetMethodSourceFile(meth), 1184f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmLineNumFromPC(meth, pc)); 1185f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1186f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1187f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project free(dotName); 1188f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1189f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project sourceFile = dvmGetMethodSourceFile(meth); 1190f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1191f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 1192f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1193f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 1194f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Print the direct stack trace of the given exception to the log. 1195f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1196f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectstatic void logStackTraceOf(Object* exception) 1197f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 1198f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const ArrayObject* stackData; 1199f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project StringObject* messageStr; 1200f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int stackSize; 1201f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project const int* intVals; 1202f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1203f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project messageStr = (StringObject*) dvmGetFieldObject(exception, 1204f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.offJavaLangThrowable_message); 1205f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (messageStr != NULL) { 1206f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project char* cp = dvmCreateCstrFromString(messageStr); 1207f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI("%s: %s\n", exception->clazz->descriptor, cp); 1208f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project free(cp); 1209f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 1210f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI("%s:\n", exception->clazz->descriptor); 1211f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1212f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1213f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackData = (const ArrayObject*) dvmGetFieldObject(exception, 1214f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project gDvm.offJavaLangThrowable_stackState); 1215f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (stackData == NULL) { 1216f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI(" (no stack trace data found)\n"); 1217f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return; 1218f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1219f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1220f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project stackSize = stackData->length / 2; 1221f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project intVals = (const int*) stackData->contents; 1222f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1223f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project dvmLogRawStackTrace(intVals, stackSize); 1224f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 1225f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1226f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 1227f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Print the stack trace of the current thread's exception, as well as 1228f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the stack traces of any chained exceptions, to the log. We extract 1229f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the stored stack trace and process it internally instead of calling 1230f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * interpreted code. 1231f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 1232f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectvoid dvmLogExceptionStackTrace(void) 1233f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 1234f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* exception = dvmThreadSelf()->exception; 1235f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object* cause; 1236f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1237f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (exception == NULL) { 1238f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGW("tried to log a null exception?\n"); 1239f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return; 1240f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1241f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1242f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (;;) { 1243f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project logStackTraceOf(exception); 1244686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden cause = dvmGetExceptionCause(exception); 1245686e1e23324f1c1f358f29f13f23e57b41c00eaaAndy McFadden if (cause == NULL) { 1246f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project break; 1247f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1248f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project LOGI("Caused by:\n"); 1249f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project exception = cause; 1250f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 1251f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 1252f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 1253