1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "well_known_classes.h"
18
19#include <stdlib.h>
20
21#include "base/logging.h"
22#include "mirror/class.h"
23#include "ScopedLocalRef.h"
24#include "thread.h"
25
26namespace art {
27
28jclass WellKnownClasses::com_android_dex_Dex;
29jclass WellKnownClasses::dalvik_system_PathClassLoader;
30jclass WellKnownClasses::java_lang_ClassLoader;
31jclass WellKnownClasses::java_lang_ClassNotFoundException;
32jclass WellKnownClasses::java_lang_Daemons;
33jclass WellKnownClasses::java_lang_Error;
34jclass WellKnownClasses::java_lang_Object;
35jclass WellKnownClasses::java_lang_reflect_AbstractMethod;
36jclass WellKnownClasses::java_lang_reflect_ArtMethod;
37jclass WellKnownClasses::java_lang_reflect_Constructor;
38jclass WellKnownClasses::java_lang_reflect_Field;
39jclass WellKnownClasses::java_lang_reflect_Method;
40jclass WellKnownClasses::java_lang_reflect_Proxy;
41jclass WellKnownClasses::java_lang_RuntimeException;
42jclass WellKnownClasses::java_lang_StackOverflowError;
43jclass WellKnownClasses::java_lang_System;
44jclass WellKnownClasses::java_lang_Thread;
45jclass WellKnownClasses::java_lang_Thread$UncaughtExceptionHandler;
46jclass WellKnownClasses::java_lang_ThreadGroup;
47jclass WellKnownClasses::java_lang_Throwable;
48jclass WellKnownClasses::java_nio_DirectByteBuffer;
49jclass WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk;
50jclass WellKnownClasses::org_apache_harmony_dalvik_ddmc_DdmServer;
51
52jmethodID WellKnownClasses::com_android_dex_Dex_create;
53jmethodID WellKnownClasses::java_lang_Boolean_valueOf;
54jmethodID WellKnownClasses::java_lang_Byte_valueOf;
55jmethodID WellKnownClasses::java_lang_Character_valueOf;
56jmethodID WellKnownClasses::java_lang_ClassLoader_loadClass;
57jmethodID WellKnownClasses::java_lang_ClassNotFoundException_init;
58jmethodID WellKnownClasses::java_lang_Daemons_requestGC;
59jmethodID WellKnownClasses::java_lang_Daemons_requestHeapTrim;
60jmethodID WellKnownClasses::java_lang_Daemons_start;
61jmethodID WellKnownClasses::java_lang_Double_valueOf;
62jmethodID WellKnownClasses::java_lang_Float_valueOf;
63jmethodID WellKnownClasses::java_lang_Integer_valueOf;
64jmethodID WellKnownClasses::java_lang_Long_valueOf;
65jmethodID WellKnownClasses::java_lang_ref_FinalizerReference_add;
66jmethodID WellKnownClasses::java_lang_ref_ReferenceQueue_add;
67jmethodID WellKnownClasses::java_lang_reflect_Proxy_invoke;
68jmethodID WellKnownClasses::java_lang_Runtime_nativeLoad;
69jmethodID WellKnownClasses::java_lang_Short_valueOf;
70jmethodID WellKnownClasses::java_lang_System_runFinalization = NULL;
71jmethodID WellKnownClasses::java_lang_Thread_init;
72jmethodID WellKnownClasses::java_lang_Thread_run;
73jmethodID WellKnownClasses::java_lang_Thread$UncaughtExceptionHandler_uncaughtException;
74jmethodID WellKnownClasses::java_lang_ThreadGroup_removeThread;
75jmethodID WellKnownClasses::java_nio_DirectByteBuffer_init;
76jmethodID WellKnownClasses::org_apache_harmony_dalvik_ddmc_DdmServer_broadcast;
77jmethodID WellKnownClasses::org_apache_harmony_dalvik_ddmc_DdmServer_dispatch;
78
79jfieldID WellKnownClasses::java_lang_Thread_daemon;
80jfieldID WellKnownClasses::java_lang_Thread_group;
81jfieldID WellKnownClasses::java_lang_Thread_lock;
82jfieldID WellKnownClasses::java_lang_Thread_name;
83jfieldID WellKnownClasses::java_lang_Thread_priority;
84jfieldID WellKnownClasses::java_lang_Thread_uncaughtHandler;
85jfieldID WellKnownClasses::java_lang_Thread_nativePeer;
86jfieldID WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup;
87jfieldID WellKnownClasses::java_lang_ThreadGroup_name;
88jfieldID WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup;
89jfieldID WellKnownClasses::java_lang_reflect_AbstractMethod_artMethod;
90jfieldID WellKnownClasses::java_lang_reflect_Field_artField;
91jfieldID WellKnownClasses::java_lang_reflect_Proxy_h;
92jfieldID WellKnownClasses::java_nio_DirectByteBuffer_capacity;
93jfieldID WellKnownClasses::java_nio_DirectByteBuffer_effectiveDirectAddress;
94jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_data;
95jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_length;
96jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_offset;
97jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_type;
98
99static jclass CacheClass(JNIEnv* env, const char* jni_class_name) {
100  ScopedLocalRef<jclass> c(env, env->FindClass(jni_class_name));
101  if (c.get() == NULL) {
102    LOG(FATAL) << "Couldn't find class: " << jni_class_name;
103  }
104  return reinterpret_cast<jclass>(env->NewGlobalRef(c.get()));
105}
106
107static jfieldID CacheField(JNIEnv* env, jclass c, bool is_static, const char* name, const char* signature) {
108  jfieldID fid = is_static ? env->GetStaticFieldID(c, name, signature) : env->GetFieldID(c, name, signature);
109  if (fid == NULL) {
110    LOG(FATAL) << "Couldn't find field \"" << name << "\" with signature \"" << signature << "\"";
111  }
112  return fid;
113}
114
115jmethodID CacheMethod(JNIEnv* env, jclass c, bool is_static, const char* name, const char* signature) {
116  jmethodID mid = is_static ? env->GetStaticMethodID(c, name, signature) : env->GetMethodID(c, name, signature);
117  if (mid == NULL) {
118    LOG(FATAL) << "Couldn't find method \"" << name << "\" with signature \"" << signature << "\"";
119  }
120  return mid;
121}
122
123static jmethodID CachePrimitiveBoxingMethod(JNIEnv* env, char prim_name, const char* boxed_name) {
124  ScopedLocalRef<jclass> boxed_class(env, env->FindClass(boxed_name));
125  return CacheMethod(env, boxed_class.get(), true, "valueOf",
126                     StringPrintf("(%c)L%s;", prim_name, boxed_name).c_str());
127}
128
129void WellKnownClasses::Init(JNIEnv* env) {
130  com_android_dex_Dex = CacheClass(env, "com/android/dex/Dex");
131  dalvik_system_PathClassLoader = CacheClass(env, "dalvik/system/PathClassLoader");
132  java_lang_ClassLoader = CacheClass(env, "java/lang/ClassLoader");
133  java_lang_ClassNotFoundException = CacheClass(env, "java/lang/ClassNotFoundException");
134  java_lang_Daemons = CacheClass(env, "java/lang/Daemons");
135  java_lang_Object = CacheClass(env, "java/lang/Object");
136  java_lang_Error = CacheClass(env, "java/lang/Error");
137  java_lang_reflect_AbstractMethod = CacheClass(env, "java/lang/reflect/AbstractMethod");
138  java_lang_reflect_ArtMethod = CacheClass(env, "java/lang/reflect/ArtMethod");
139  java_lang_reflect_Constructor = CacheClass(env, "java/lang/reflect/Constructor");
140  java_lang_reflect_Field = CacheClass(env, "java/lang/reflect/Field");
141  java_lang_reflect_Method = CacheClass(env, "java/lang/reflect/Method");
142  java_lang_reflect_Proxy = CacheClass(env, "java/lang/reflect/Proxy");
143  java_lang_RuntimeException = CacheClass(env, "java/lang/RuntimeException");
144  java_lang_StackOverflowError = CacheClass(env, "java/lang/StackOverflowError");
145  java_lang_System = CacheClass(env, "java/lang/System");
146  java_lang_Thread = CacheClass(env, "java/lang/Thread");
147  java_lang_Thread$UncaughtExceptionHandler = CacheClass(env, "java/lang/Thread$UncaughtExceptionHandler");
148  java_lang_ThreadGroup = CacheClass(env, "java/lang/ThreadGroup");
149  java_lang_Throwable = CacheClass(env, "java/lang/Throwable");
150  java_nio_DirectByteBuffer = CacheClass(env, "java/nio/DirectByteBuffer");
151  org_apache_harmony_dalvik_ddmc_Chunk = CacheClass(env, "org/apache/harmony/dalvik/ddmc/Chunk");
152  org_apache_harmony_dalvik_ddmc_DdmServer = CacheClass(env, "org/apache/harmony/dalvik/ddmc/DdmServer");
153
154  com_android_dex_Dex_create = CacheMethod(env, com_android_dex_Dex, true, "create", "(Ljava/nio/ByteBuffer;)Lcom/android/dex/Dex;");
155  java_lang_ClassNotFoundException_init = CacheMethod(env, java_lang_ClassNotFoundException, false, "<init>", "(Ljava/lang/String;Ljava/lang/Throwable;)V");
156  java_lang_ClassLoader_loadClass = CacheMethod(env, java_lang_ClassLoader, false, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;");
157
158  java_lang_Daemons_requestGC = CacheMethod(env, java_lang_Daemons, true, "requestGC", "()V");
159  java_lang_Daemons_requestHeapTrim = CacheMethod(env, java_lang_Daemons, true, "requestHeapTrim", "()V");
160  java_lang_Daemons_start = CacheMethod(env, java_lang_Daemons, true, "start", "()V");
161
162  ScopedLocalRef<jclass> java_lang_ref_FinalizerReference(env, env->FindClass("java/lang/ref/FinalizerReference"));
163  java_lang_ref_FinalizerReference_add = CacheMethod(env, java_lang_ref_FinalizerReference.get(), true, "add", "(Ljava/lang/Object;)V");
164  ScopedLocalRef<jclass> java_lang_ref_ReferenceQueue(env, env->FindClass("java/lang/ref/ReferenceQueue"));
165  java_lang_ref_ReferenceQueue_add = CacheMethod(env, java_lang_ref_ReferenceQueue.get(), true, "add", "(Ljava/lang/ref/Reference;)V");
166
167  java_lang_reflect_Proxy_invoke = CacheMethod(env, java_lang_reflect_Proxy, true, "invoke", "(Ljava/lang/reflect/Proxy;Ljava/lang/reflect/ArtMethod;[Ljava/lang/Object;)Ljava/lang/Object;");
168  java_lang_Thread_init = CacheMethod(env, java_lang_Thread, false, "<init>", "(Ljava/lang/ThreadGroup;Ljava/lang/String;IZ)V");
169  java_lang_Thread_run = CacheMethod(env, java_lang_Thread, false, "run", "()V");
170  java_lang_Thread$UncaughtExceptionHandler_uncaughtException = CacheMethod(env, java_lang_Thread$UncaughtExceptionHandler, false, "uncaughtException", "(Ljava/lang/Thread;Ljava/lang/Throwable;)V");
171  java_lang_ThreadGroup_removeThread = CacheMethod(env, java_lang_ThreadGroup, false, "removeThread", "(Ljava/lang/Thread;)V");
172  java_nio_DirectByteBuffer_init = CacheMethod(env, java_nio_DirectByteBuffer, false, "<init>", "(JI)V");
173  org_apache_harmony_dalvik_ddmc_DdmServer_broadcast = CacheMethod(env, org_apache_harmony_dalvik_ddmc_DdmServer, true, "broadcast", "(I)V");
174  org_apache_harmony_dalvik_ddmc_DdmServer_dispatch = CacheMethod(env, org_apache_harmony_dalvik_ddmc_DdmServer, true, "dispatch", "(I[BII)Lorg/apache/harmony/dalvik/ddmc/Chunk;");
175
176  java_lang_Thread_daemon = CacheField(env, java_lang_Thread, false, "daemon", "Z");
177  java_lang_Thread_group = CacheField(env, java_lang_Thread, false, "group", "Ljava/lang/ThreadGroup;");
178  java_lang_Thread_lock = CacheField(env, java_lang_Thread, false, "lock", "Ljava/lang/Object;");
179  java_lang_Thread_name = CacheField(env, java_lang_Thread, false, "name", "Ljava/lang/String;");
180  java_lang_Thread_priority = CacheField(env, java_lang_Thread, false, "priority", "I");
181  java_lang_Thread_uncaughtHandler = CacheField(env, java_lang_Thread, false, "uncaughtHandler", "Ljava/lang/Thread$UncaughtExceptionHandler;");
182  java_lang_Thread_nativePeer = CacheField(env, java_lang_Thread, false, "nativePeer", "I");
183  java_lang_ThreadGroup_mainThreadGroup = CacheField(env, java_lang_ThreadGroup, true, "mainThreadGroup", "Ljava/lang/ThreadGroup;");
184  java_lang_ThreadGroup_name = CacheField(env, java_lang_ThreadGroup, false, "name", "Ljava/lang/String;");
185  java_lang_ThreadGroup_systemThreadGroup = CacheField(env, java_lang_ThreadGroup, true, "systemThreadGroup", "Ljava/lang/ThreadGroup;");
186  java_lang_reflect_AbstractMethod_artMethod = CacheField(env, java_lang_reflect_AbstractMethod, false, "artMethod", "Ljava/lang/reflect/ArtMethod;");
187  java_lang_reflect_Field_artField = CacheField(env, java_lang_reflect_Field, false, "artField", "Ljava/lang/reflect/ArtField;");
188  java_lang_reflect_Proxy_h = CacheField(env, java_lang_reflect_Proxy, false, "h", "Ljava/lang/reflect/InvocationHandler;");
189  java_nio_DirectByteBuffer_capacity = CacheField(env, java_nio_DirectByteBuffer, false, "capacity", "I");
190  java_nio_DirectByteBuffer_effectiveDirectAddress = CacheField(env, java_nio_DirectByteBuffer, false, "effectiveDirectAddress", "J");
191  org_apache_harmony_dalvik_ddmc_Chunk_data = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "data", "[B");
192  org_apache_harmony_dalvik_ddmc_Chunk_length = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "length", "I");
193  org_apache_harmony_dalvik_ddmc_Chunk_offset = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "offset", "I");
194  org_apache_harmony_dalvik_ddmc_Chunk_type = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "type", "I");
195
196  java_lang_Boolean_valueOf = CachePrimitiveBoxingMethod(env, 'Z', "java/lang/Boolean");
197  java_lang_Byte_valueOf = CachePrimitiveBoxingMethod(env, 'B', "java/lang/Byte");
198  java_lang_Character_valueOf = CachePrimitiveBoxingMethod(env, 'C', "java/lang/Character");
199  java_lang_Double_valueOf = CachePrimitiveBoxingMethod(env, 'D', "java/lang/Double");
200  java_lang_Float_valueOf = CachePrimitiveBoxingMethod(env, 'F', "java/lang/Float");
201  java_lang_Integer_valueOf = CachePrimitiveBoxingMethod(env, 'I', "java/lang/Integer");
202  java_lang_Long_valueOf = CachePrimitiveBoxingMethod(env, 'J', "java/lang/Long");
203  java_lang_Short_valueOf = CachePrimitiveBoxingMethod(env, 'S', "java/lang/Short");
204}
205
206void WellKnownClasses::LateInit(JNIEnv* env) {
207  ScopedLocalRef<jclass> java_lang_Runtime(env, env->FindClass("java/lang/Runtime"));
208  java_lang_Runtime_nativeLoad = CacheMethod(env, java_lang_Runtime.get(), true, "nativeLoad", "(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/String;");
209}
210
211mirror::Class* WellKnownClasses::ToClass(jclass global_jclass) {
212  return reinterpret_cast<mirror::Class*>(Thread::Current()->DecodeJObject(global_jclass));
213}
214
215}  // namespace art
216