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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <dlfcn.h>
#include <cutils/log.h>
#include "jni.h"
#include "DdmConnection.h"
namespace android {
void DdmConnection_start(const char* name) {
ALOGI("DdmConnection_start");
DdmConnection::start(name);
}
void DdmConnection::start(const char* name) {
JavaVM* vm;
JNIEnv* env;
// start a VM
JavaVMInitArgs args;
JavaVMOption opt;
opt.optionString =
"-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y";
args.version = JNI_VERSION_1_4;
args.options = &opt;
args.nOptions = 1;
args.ignoreUnrecognized = JNI_FALSE;
// TODO: Should this just link against libnativehelper and use its
// JNI_CreateJavaVM wrapper that essential does this dlopen/dlsym
// work based on the current system default runtime?
void* libart_dso = dlopen("libart.so", RTLD_NOW);
ALOGE_IF(!libart_dso, "DdmConnection: %s", dlerror());
void* libandroid_runtime_dso = dlopen("libandroid_runtime.so", RTLD_NOW);
ALOGE_IF(!libandroid_runtime_dso, "DdmConnection: %s", dlerror());
if (!libart_dso || !libandroid_runtime_dso) {
goto error;
}
jint (*JNI_CreateJavaVM)(JavaVM** p_vm, JNIEnv** p_env, void* vm_args);
JNI_CreateJavaVM = (typeof JNI_CreateJavaVM)dlsym(libart_dso, "JNI_CreateJavaVM");
ALOGE_IF(!JNI_CreateJavaVM, "DdmConnection: %s", dlerror());
jint (*registerNatives)(JNIEnv* env, jclass clazz);
registerNatives = (typeof registerNatives)dlsym(libandroid_runtime_dso,
"Java_com_android_internal_util_WithFramework_registerNatives");
ALOGE_IF(!registerNatives, "DdmConnection: %s", dlerror());
if (!JNI_CreateJavaVM || !registerNatives) {
goto error;
}
if (JNI_CreateJavaVM(&vm, &env, &args) == 0) {
jclass startClass;
jmethodID startMeth;
// register native code
if (registerNatives(env, 0) == 0) {
// set our name by calling DdmHandleAppName.setAppName()
startClass = env->FindClass("android/ddm/DdmHandleAppName");
if (startClass) {
startMeth = env->GetStaticMethodID(startClass,
"setAppName", "(Ljava/lang/String;I)V");
if (startMeth) {
jstring str = env->NewStringUTF(name);
env->CallStaticVoidMethod(startClass, startMeth, str, getuid());
env->DeleteLocalRef(str);
}
}
// initialize DDMS communication by calling
// DdmRegister.registerHandlers()
startClass = env->FindClass("android/ddm/DdmRegister");
if (startClass) {
startMeth = env->GetStaticMethodID(startClass,
"registerHandlers", "()V");
if (startMeth) {
env->CallStaticVoidMethod(startClass, startMeth);
}
}
}
}
return;
error:
if (libandroid_runtime_dso) {
dlclose(libandroid_runtime_dso);
}
if (libart_dso) {
dlclose(libart_dso);
}
}
}; // namespace android
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