well_known_classes.cc revision 8a39e7fe02e9a81853dc7a75cb50d9ece07a9b37 
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-inl.h"
25
26namespace art {
27
28jclass WellKnownClasses::com_android_dex_Dex;
29jclass WellKnownClasses::dalvik_system_DexFile;
30jclass WellKnownClasses::dalvik_system_DexPathList;
31jclass WellKnownClasses::dalvik_system_DexPathList$Element;
32jclass WellKnownClasses::dalvik_system_PathClassLoader;
33jclass WellKnownClasses::java_lang_BootClassLoader;
34jclass WellKnownClasses::java_lang_ClassLoader;
35jclass WellKnownClasses::java_lang_ClassNotFoundException;
36jclass WellKnownClasses::java_lang_Daemons;
37jclass WellKnownClasses::java_lang_Error;
38jclass WellKnownClasses::java_lang_Object;
39jclass WellKnownClasses::java_lang_reflect_AbstractMethod;
40jclass WellKnownClasses::java_lang_reflect_ArtMethod;
41jclass WellKnownClasses::java_lang_reflect_Constructor;
42jclass WellKnownClasses::java_lang_reflect_Field;
43jclass WellKnownClasses::java_lang_reflect_Method;
44jclass WellKnownClasses::java_lang_reflect_Proxy;
45jclass WellKnownClasses::java_lang_RuntimeException;
46jclass WellKnownClasses::java_lang_StackOverflowError;
47jclass WellKnownClasses::java_lang_String;
48jclass WellKnownClasses::java_lang_System;
49jclass WellKnownClasses::java_lang_Thread;
50jclass WellKnownClasses::java_lang_Thread$UncaughtExceptionHandler;
51jclass WellKnownClasses::java_lang_ThreadGroup;
52jclass WellKnownClasses::java_lang_Throwable;
53jclass WellKnownClasses::java_nio_DirectByteBuffer;
54jclass WellKnownClasses::java_util_Collections;
55jclass WellKnownClasses::libcore_util_EmptyArray;
56jclass WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk;
57jclass WellKnownClasses::org_apache_harmony_dalvik_ddmc_DdmServer;
58
59jmethodID WellKnownClasses::com_android_dex_Dex_create;
60jmethodID WellKnownClasses::java_lang_Boolean_valueOf;
61jmethodID WellKnownClasses::java_lang_Byte_valueOf;
62jmethodID WellKnownClasses::java_lang_Character_valueOf;
63jmethodID WellKnownClasses::java_lang_ClassLoader_loadClass;
64jmethodID WellKnownClasses::java_lang_ClassNotFoundException_init;
65jmethodID WellKnownClasses::java_lang_Daemons_requestGC;
66jmethodID WellKnownClasses::java_lang_Daemons_requestHeapTrim;
67jmethodID WellKnownClasses::java_lang_Daemons_start;
68jmethodID WellKnownClasses::java_lang_Double_valueOf;
69jmethodID WellKnownClasses::java_lang_Float_valueOf;
70jmethodID WellKnownClasses::java_lang_Integer_valueOf;
71jmethodID WellKnownClasses::java_lang_Long_valueOf;
72jmethodID WellKnownClasses::java_lang_ref_FinalizerReference_add;
73jmethodID WellKnownClasses::java_lang_ref_ReferenceQueue_add;
74jmethodID WellKnownClasses::java_lang_reflect_Proxy_invoke;
75jmethodID WellKnownClasses::java_lang_Runtime_nativeLoad;
76jmethodID WellKnownClasses::java_lang_Short_valueOf;
77jmethodID WellKnownClasses::java_lang_System_runFinalization = NULL;
78jmethodID WellKnownClasses::java_lang_Thread_init;
79jmethodID WellKnownClasses::java_lang_Thread_run;
80jmethodID WellKnownClasses::java_lang_Thread$UncaughtExceptionHandler_uncaughtException;
81jmethodID WellKnownClasses::java_lang_ThreadGroup_removeThread;
82jmethodID WellKnownClasses::java_nio_DirectByteBuffer_init;
83jmethodID WellKnownClasses::org_apache_harmony_dalvik_ddmc_DdmServer_broadcast;
84jmethodID WellKnownClasses::org_apache_harmony_dalvik_ddmc_DdmServer_dispatch;
85
86jfieldID WellKnownClasses::dalvik_system_DexFile_cookie;
87jfieldID WellKnownClasses::dalvik_system_PathClassLoader_pathList;
88jfieldID WellKnownClasses::dalvik_system_DexPathList_dexElements;
89jfieldID WellKnownClasses::dalvik_system_DexPathList$Element_dexFile;
90jfieldID WellKnownClasses::java_lang_Thread_daemon;
91jfieldID WellKnownClasses::java_lang_Thread_group;
92jfieldID WellKnownClasses::java_lang_Thread_lock;
93jfieldID WellKnownClasses::java_lang_Thread_name;
94jfieldID WellKnownClasses::java_lang_Thread_priority;
95jfieldID WellKnownClasses::java_lang_Thread_uncaughtHandler;
96jfieldID WellKnownClasses::java_lang_Thread_nativePeer;
97jfieldID WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup;
98jfieldID WellKnownClasses::java_lang_ThreadGroup_name;
99jfieldID WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup;
100jfieldID WellKnownClasses::java_lang_reflect_AbstractMethod_artMethod;
101jfieldID WellKnownClasses::java_lang_reflect_Field_artField;
102jfieldID WellKnownClasses::java_lang_reflect_Proxy_h;
103jfieldID WellKnownClasses::java_nio_DirectByteBuffer_capacity;
104jfieldID WellKnownClasses::java_nio_DirectByteBuffer_effectiveDirectAddress;
105jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_data;
106jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_length;
107jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_offset;
108jfieldID WellKnownClasses::org_apache_harmony_dalvik_ddmc_Chunk_type;
109
110static jclass CacheClass(JNIEnv* env, const char* jni_class_name) {
111  ScopedLocalRef<jclass> c(env, env->FindClass(jni_class_name));
112  if (c.get() == NULL) {
113    LOG(FATAL) << "Couldn't find class: " << jni_class_name;
114  }
115  return reinterpret_cast<jclass>(env->NewGlobalRef(c.get()));
116}
117
118static jfieldID CacheField(JNIEnv* env, jclass c, bool is_static, const char* name, const char* signature) {
119  jfieldID fid = is_static ? env->GetStaticFieldID(c, name, signature) : env->GetFieldID(c, name, signature);
120  if (fid == NULL) {
121    LOG(FATAL) << "Couldn't find field \"" << name << "\" with signature \"" << signature << "\"";
122  }
123  return fid;
124}
125
126jmethodID CacheMethod(JNIEnv* env, jclass c, bool is_static, const char* name, const char* signature) {
127  jmethodID mid = is_static ? env->GetStaticMethodID(c, name, signature) : env->GetMethodID(c, name, signature);
128  if (mid == NULL) {
129    LOG(FATAL) << "Couldn't find method \"" << name << "\" with signature \"" << signature << "\"";
130  }
131  return mid;
132}
133
134static jmethodID CachePrimitiveBoxingMethod(JNIEnv* env, char prim_name, const char* boxed_name) {
135  ScopedLocalRef<jclass> boxed_class(env, env->FindClass(boxed_name));
136  return CacheMethod(env, boxed_class.get(), true, "valueOf",
137                     StringPrintf("(%c)L%s;", prim_name, boxed_name).c_str());
138}
139
140void WellKnownClasses::Init(JNIEnv* env) {
141  com_android_dex_Dex = CacheClass(env, "com/android/dex/Dex");
142  dalvik_system_DexFile = CacheClass(env, "dalvik/system/DexFile");
143  dalvik_system_DexPathList = CacheClass(env, "dalvik/system/DexPathList");
144  dalvik_system_DexPathList$Element = CacheClass(env, "dalvik/system/DexPathList$Element");
145  dalvik_system_PathClassLoader = CacheClass(env, "dalvik/system/PathClassLoader");
146  java_lang_BootClassLoader = CacheClass(env, "java/lang/BootClassLoader");
147  java_lang_ClassLoader = CacheClass(env, "java/lang/ClassLoader");
148  java_lang_ClassNotFoundException = CacheClass(env, "java/lang/ClassNotFoundException");
149  java_lang_Daemons = CacheClass(env, "java/lang/Daemons");
150  java_lang_Object = CacheClass(env, "java/lang/Object");
151  java_lang_Error = CacheClass(env, "java/lang/Error");
152  java_lang_reflect_AbstractMethod = CacheClass(env, "java/lang/reflect/AbstractMethod");
153  java_lang_reflect_ArtMethod = CacheClass(env, "java/lang/reflect/ArtMethod");
154  java_lang_reflect_Constructor = CacheClass(env, "java/lang/reflect/Constructor");
155  java_lang_reflect_Field = CacheClass(env, "java/lang/reflect/Field");
156  java_lang_reflect_Method = CacheClass(env, "java/lang/reflect/Method");
157  java_lang_reflect_Proxy = CacheClass(env, "java/lang/reflect/Proxy");
158  java_lang_RuntimeException = CacheClass(env, "java/lang/RuntimeException");
159  java_lang_StackOverflowError = CacheClass(env, "java/lang/StackOverflowError");
160  java_lang_String = CacheClass(env, "java/lang/String");
161  java_lang_System = CacheClass(env, "java/lang/System");
162  java_lang_Thread = CacheClass(env, "java/lang/Thread");
163  java_lang_Thread$UncaughtExceptionHandler = CacheClass(env, "java/lang/Thread$UncaughtExceptionHandler");
164  java_lang_ThreadGroup = CacheClass(env, "java/lang/ThreadGroup");
165  java_lang_Throwable = CacheClass(env, "java/lang/Throwable");
166  java_nio_DirectByteBuffer = CacheClass(env, "java/nio/DirectByteBuffer");
167  java_util_Collections = CacheClass(env, "java/util/Collections");
168  libcore_util_EmptyArray = CacheClass(env, "libcore/util/EmptyArray");
169  org_apache_harmony_dalvik_ddmc_Chunk = CacheClass(env, "org/apache/harmony/dalvik/ddmc/Chunk");
170  org_apache_harmony_dalvik_ddmc_DdmServer = CacheClass(env, "org/apache/harmony/dalvik/ddmc/DdmServer");
171
172  com_android_dex_Dex_create = CacheMethod(env, com_android_dex_Dex, true, "create", "(Ljava/nio/ByteBuffer;)Lcom/android/dex/Dex;");
173  java_lang_ClassNotFoundException_init = CacheMethod(env, java_lang_ClassNotFoundException, false, "<init>", "(Ljava/lang/String;Ljava/lang/Throwable;)V");
174  java_lang_ClassLoader_loadClass = CacheMethod(env, java_lang_ClassLoader, false, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;");
175
176  java_lang_Daemons_requestGC = CacheMethod(env, java_lang_Daemons, true, "requestGC", "()V");
177  java_lang_Daemons_requestHeapTrim = CacheMethod(env, java_lang_Daemons, true, "requestHeapTrim", "()V");
178  java_lang_Daemons_start = CacheMethod(env, java_lang_Daemons, true, "start", "()V");
179
180  ScopedLocalRef<jclass> java_lang_ref_FinalizerReference(env, env->FindClass("java/lang/ref/FinalizerReference"));
181  java_lang_ref_FinalizerReference_add = CacheMethod(env, java_lang_ref_FinalizerReference.get(), true, "add", "(Ljava/lang/Object;)V");
182  ScopedLocalRef<jclass> java_lang_ref_ReferenceQueue(env, env->FindClass("java/lang/ref/ReferenceQueue"));
183  java_lang_ref_ReferenceQueue_add = CacheMethod(env, java_lang_ref_ReferenceQueue.get(), true, "add", "(Ljava/lang/ref/Reference;)V");
184
185  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;");
186  java_lang_Thread_init = CacheMethod(env, java_lang_Thread, false, "<init>", "(Ljava/lang/ThreadGroup;Ljava/lang/String;IZ)V");
187  java_lang_Thread_run = CacheMethod(env, java_lang_Thread, false, "run", "()V");
188  java_lang_Thread$UncaughtExceptionHandler_uncaughtException = CacheMethod(env, java_lang_Thread$UncaughtExceptionHandler, false, "uncaughtException", "(Ljava/lang/Thread;Ljava/lang/Throwable;)V");
189  java_lang_ThreadGroup_removeThread = CacheMethod(env, java_lang_ThreadGroup, false, "removeThread", "(Ljava/lang/Thread;)V");
190  java_nio_DirectByteBuffer_init = CacheMethod(env, java_nio_DirectByteBuffer, false, "<init>", "(JI)V");
191  org_apache_harmony_dalvik_ddmc_DdmServer_broadcast = CacheMethod(env, org_apache_harmony_dalvik_ddmc_DdmServer, true, "broadcast", "(I)V");
192  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;");
193
194  dalvik_system_DexFile_cookie = CacheField(env, dalvik_system_DexFile, false, "mCookie", "J");
195  dalvik_system_PathClassLoader_pathList = CacheField(env, dalvik_system_PathClassLoader, false, "pathList", "Ldalvik/system/DexPathList;");
196  dalvik_system_DexPathList_dexElements = CacheField(env, dalvik_system_DexPathList, false, "dexElements", "[Ldalvik/system/DexPathList$Element;");
197  dalvik_system_DexPathList$Element_dexFile = CacheField(env, dalvik_system_DexPathList$Element, false, "dexFile", "Ldalvik/system/DexFile;");
198  java_lang_Thread_daemon = CacheField(env, java_lang_Thread, false, "daemon", "Z");
199  java_lang_Thread_group = CacheField(env, java_lang_Thread, false, "group", "Ljava/lang/ThreadGroup;");
200  java_lang_Thread_lock = CacheField(env, java_lang_Thread, false, "lock", "Ljava/lang/Object;");
201  java_lang_Thread_name = CacheField(env, java_lang_Thread, false, "name", "Ljava/lang/String;");
202  java_lang_Thread_priority = CacheField(env, java_lang_Thread, false, "priority", "I");
203  java_lang_Thread_uncaughtHandler = CacheField(env, java_lang_Thread, false, "uncaughtHandler", "Ljava/lang/Thread$UncaughtExceptionHandler;");
204  java_lang_Thread_nativePeer = CacheField(env, java_lang_Thread, false, "nativePeer", "J");
205  java_lang_ThreadGroup_mainThreadGroup = CacheField(env, java_lang_ThreadGroup, true, "mainThreadGroup", "Ljava/lang/ThreadGroup;");
206  java_lang_ThreadGroup_name = CacheField(env, java_lang_ThreadGroup, false, "name", "Ljava/lang/String;");
207  java_lang_ThreadGroup_systemThreadGroup = CacheField(env, java_lang_ThreadGroup, true, "systemThreadGroup", "Ljava/lang/ThreadGroup;");
208  java_lang_reflect_AbstractMethod_artMethod = CacheField(env, java_lang_reflect_AbstractMethod, false, "artMethod", "Ljava/lang/reflect/ArtMethod;");
209  java_lang_reflect_Field_artField = CacheField(env, java_lang_reflect_Field, false, "artField", "Ljava/lang/reflect/ArtField;");
210  java_lang_reflect_Proxy_h = CacheField(env, java_lang_reflect_Proxy, false, "h", "Ljava/lang/reflect/InvocationHandler;");
211  java_nio_DirectByteBuffer_capacity = CacheField(env, java_nio_DirectByteBuffer, false, "capacity", "I");
212  java_nio_DirectByteBuffer_effectiveDirectAddress = CacheField(env, java_nio_DirectByteBuffer, false, "effectiveDirectAddress", "J");
213  org_apache_harmony_dalvik_ddmc_Chunk_data = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "data", "[B");
214  org_apache_harmony_dalvik_ddmc_Chunk_length = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "length", "I");
215  org_apache_harmony_dalvik_ddmc_Chunk_offset = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "offset", "I");
216  org_apache_harmony_dalvik_ddmc_Chunk_type = CacheField(env, org_apache_harmony_dalvik_ddmc_Chunk, false, "type", "I");
217
218  java_lang_Boolean_valueOf = CachePrimitiveBoxingMethod(env, 'Z', "java/lang/Boolean");
219  java_lang_Byte_valueOf = CachePrimitiveBoxingMethod(env, 'B', "java/lang/Byte");
220  java_lang_Character_valueOf = CachePrimitiveBoxingMethod(env, 'C', "java/lang/Character");
221  java_lang_Double_valueOf = CachePrimitiveBoxingMethod(env, 'D', "java/lang/Double");
222  java_lang_Float_valueOf = CachePrimitiveBoxingMethod(env, 'F', "java/lang/Float");
223  java_lang_Integer_valueOf = CachePrimitiveBoxingMethod(env, 'I', "java/lang/Integer");
224  java_lang_Long_valueOf = CachePrimitiveBoxingMethod(env, 'J', "java/lang/Long");
225  java_lang_Short_valueOf = CachePrimitiveBoxingMethod(env, 'S', "java/lang/Short");
226}
227
228void WellKnownClasses::LateInit(JNIEnv* env) {
229  ScopedLocalRef<jclass> java_lang_Runtime(env, env->FindClass("java/lang/Runtime"));
230  java_lang_Runtime_nativeLoad = CacheMethod(env, java_lang_Runtime.get(), true, "nativeLoad", "(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/String;");
231}
232
233mirror::Class* WellKnownClasses::ToClass(jclass global_jclass) {
234  return reinterpret_cast<mirror::Class*>(Thread::Current()->DecodeJObject(global_jclass));
235}
236
237}  // namespace art
238