1 /* 2 * Copyright (C) 2005 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 // 18 19 #ifndef _RUNTIME_ANDROID_RUNTIME_H 20 #define _RUNTIME_ANDROID_RUNTIME_H 21 22 #include <utils/Errors.h> 23 #include <binder/IBinder.h> 24 #include <utils/String8.h> 25 #include <utils/String16.h> 26 #include <utils/Vector.h> 27 #include <utils/threads.h> 28 #include <pthread.h> 29 #include <nativehelper/jni.h> 30 31 32 namespace android { 33 34 class AndroidRuntime 35 { 36 public: 37 AndroidRuntime(); 38 virtual ~AndroidRuntime(); 39 40 enum StartMode { 41 Zygote, 42 SystemServer, 43 Application, 44 Tool, 45 }; 46 47 /** 48 * Register a set of methods in the specified class. 49 */ 50 static int registerNativeMethods(JNIEnv* env, 51 const char* className, const JNINativeMethod* gMethods, int numMethods); 52 53 /** 54 * Call a class's static main method with the given arguments, 55 */ 56 status_t callMain(const char* className, jclass clazz, int argc, 57 const char* const argv[]); 58 59 /** 60 * Find a class, with the input either of the form 61 * "package/class" or "package.class". 62 */ 63 static jclass findClass(JNIEnv* env, const char* className); 64 65 int addVmArguments(int argc, const char* const argv[]); 66 67 void start(const char *classname, const char* options); 68 69 static AndroidRuntime* getRuntime(); 70 71 /** 72 * This gets called after the VM has been created, but before we 73 * run any code. Override it to make any FindClass calls that need 74 * to use CLASSPATH. 75 */ 76 virtual void onVmCreated(JNIEnv* env); 77 78 /** 79 * This gets called after the JavaVM has initialized. Override it 80 * with the system's native entry point. 81 */ 82 virtual void onStarted() = 0; 83 84 /** 85 * This gets called after the JavaVM has initialized after a Zygote 86 * fork. Override it to initialize threads, etc. Upon return, the 87 * correct static main will be invoked. 88 */ 89 virtual void onZygoteInit() {}; 90 91 92 /** 93 * Called when the Java application exits. The default 94 * implementation calls exit(code). 95 */ 96 virtual void onExit(int code); 97 98 /** create a new thread that is visible from Java */ 99 static android_thread_id_t createJavaThread(const char* name, void (*start)(void *), 100 void* arg); 101 102 /** return a pointer to the VM running in this process */ 103 static JavaVM* getJavaVM() { return mJavaVM; } 104 105 /** return a pointer to the JNIEnv pointer for this thread */ 106 static JNIEnv* getJNIEnv(); 107 108 /** return a new string corresponding to 'className' with all '.'s replaced by '/'s. */ 109 static char* toSlashClassName(const char* className); 110 111 private: 112 static int startReg(JNIEnv* env); 113 void parseExtraOpts(char* extraOptsBuf); 114 int startVm(JavaVM** pJavaVM, JNIEnv** pEnv); 115 116 Vector<JavaVMOption> mOptions; 117 118 /* JNI JavaVM pointer */ 119 static JavaVM* mJavaVM; 120 121 /* 122 * Thread creation helpers. 123 */ 124 static int javaCreateThreadEtc( 125 android_thread_func_t entryFunction, 126 void* userData, 127 const char* threadName, 128 int32_t threadPriority, 129 size_t threadStackSize, 130 android_thread_id_t* threadId); 131 static int javaThreadShell(void* args); 132 }; 133 134 } 135 136 #endif 137