virtual void onVmCreated(JNIEnv* env)
{
keepLoadingXposed = xposedOnVmCreated(env, mClassName);
if (mClassName == NULL) {
return; // Zygote. Nothing to do here.
}
/*
* This is a little awkward because the JNI FindClass call uses the
* class loader associated with the native method we're executing in.
* If called in onStarted (from RuntimeInit.finishInit because we're
* launching "am", for example), FindClass would see that we're calling
* from a boot class' native method, and so wouldn't look for the class
* we're trying to look up in CLASSPATH. Unfortunately it needs to,
* because the "am" classes are not boot classes.
*
* The easiest fix is to call FindClass here, early on before we start
* executing boot class Java code and thereby deny ourselves access to
* non-boot classes.
*/
char* slashClassName = toSlashClassName(mClassName);
mClass = env->FindClass(slashClassName);
if (mClass == NULL) {
ALOGE("ERROR: could not find class '%s'\n", mClassName);
}
free(slashClassName);
mClass = reinterpret_cast<jclass>(env->NewGlobalRef(mClass));
}
/*
* Start the Android runtime. This involves starting the virtual machine
* and calling the "static void main(String[] args)" method in the class
* named by "className".
*/
void /*AndroidRuntime::*/start(const char* className, const bool startSystemServer)
{
LOGD("\n>>>>>> AndroidRuntime START %s <<<<<<\n",
className != NULL ? className : "(unknown)");
char* slashClassName = NULL;
char* cp;
JNIEnv* env;
blockSigpipe();
/*
* 'startSystemServer == true' means runtime is obslete and not run from
* init.rc anymore, so we print out the boot start event here.
*/
if (startSystemServer) {
/* track our progress through the boot sequence */
const int LOG_BOOT_PROGRESS_START = 3000;
LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START,
ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
}
const char* rootDir = getenv("ANDROID_ROOT");
if (rootDir == NULL) {
rootDir = "/system";
if (!hasDir("/system")) {
LOG_FATAL("No root directory specified, and /android does not exist.");
goto bail;
}
setenv("ANDROID_ROOT", rootDir, 1);
}
//const char* kernelHack = getenv("LD_ASSUME_KERNEL");
//LOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack);
/* start the virtual machine */
if (startVm(&mJavaVM, &env) != 0)
goto bail;
keepLoadingXposed = xposedOnVmCreated(env, mClassName);
/*
* Register android functions.
*/
if (startReg(env) < 0) {
LOGE("Unable to register all android natives\n");
goto bail;
}
/*
* We want to call main() with a String array with arguments in it.
* At present we only have one argument, the class name. Create an
* array to hold it.
*/
jclass stringClass;
jobjectArray strArray;
jstring classNameStr;
jstring startSystemServerStr;
stringClass = env->FindClass("java/lang/String");
assert(stringClass != NULL);
strArray = env->NewObjectArray(2, stringClass, NULL);
assert(strArray != NULL);
classNameStr = env->NewStringUTF(className);
assert(classNameStr != NULL);
env->SetObjectArrayElement(strArray, 0, classNameStr);
startSystemServerStr = env->NewStringUTF(startSystemServer ?
"true" : "false");
env->SetObjectArrayElement(strArray, 1, startSystemServerStr);
/*
* Start VM. This thread becomes the main thread of the VM, and will
* not return until the VM exits.
*/
jclass startClass;
jmethodID startMeth;
slashClassName = strdup(className);
for (cp = slashClassName; *cp != '\0'; cp++)
if (*cp == '.')
*cp = '/';
startClass = env->FindClass(slashClassName);
if (startClass == NULL) {
LOGE("JavaVM unable to locate class '%s'\n", slashClassName);
/* keep going */
} else {
startMeth = env->GetStaticMethodID(startClass, "main",
"([Ljava/lang/String;)V");
if (startMeth == NULL) {
LOGE("JavaVM unable to find main() in '%s'\n", className);
/* keep going */
} else {
env->CallStaticVoidMethod(startClass, startMeth, strArray);
#if 0
if (env->ExceptionCheck())
threadExitUncaughtException(env);
#endif
}
}
LOGD("Shutting down VM\n");
if (mJavaVM->DetachCurrentThread() != JNI_OK)
LOGW("Warning: unable to detach main thread\n");
if (mJavaVM->DestroyJavaVM() != 0)
LOGW("Warning: VM did not shut down cleanly\n");
bail:
free(slashClassName);
}
