111 lines
3.4 KiB
C++
111 lines
3.4 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <dlfcn.h>
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#include <limits.h>
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#include <unistd.h>
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#include "gc/heap.h"
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#include "handle_scope-inl.h"
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#include "jni_internal.h"
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#include "mirror/class_loader.h"
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#include "runtime.h"
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#include "scoped_thread_state_change.h"
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#include "ScopedUtfChars.h"
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#include "verify_object-inl.h"
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namespace art {
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static void Runtime_gc(JNIEnv*, jclass) {
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if (Runtime::Current()->IsExplicitGcDisabled()) {
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LOG(INFO) << "Explicit GC skipped.";
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return;
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}
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Runtime::Current()->GetHeap()->CollectGarbage(false);
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}
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static void Runtime_nativeExit(JNIEnv*, jclass, jint status) {
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LOG(INFO) << "System.exit called, status: " << status;
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Runtime::Current()->CallExitHook(status);
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exit(status);
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}
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static jstring Runtime_nativeLoad(JNIEnv* env, jclass, jstring javaFilename, jobject javaLoader, jstring javaLdLibraryPath) {
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ScopedUtfChars filename(env, javaFilename);
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if (filename.c_str() == NULL) {
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return NULL;
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}
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if (javaLdLibraryPath != NULL) {
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ScopedUtfChars ldLibraryPath(env, javaLdLibraryPath);
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if (ldLibraryPath.c_str() == NULL) {
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return NULL;
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}
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void* sym = dlsym(RTLD_DEFAULT, "android_update_LD_LIBRARY_PATH");
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if (sym != NULL) {
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typedef void (*Fn)(const char*);
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Fn android_update_LD_LIBRARY_PATH = reinterpret_cast<Fn>(sym);
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(*android_update_LD_LIBRARY_PATH)(ldLibraryPath.c_str());
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} else {
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LOG(ERROR) << "android_update_LD_LIBRARY_PATH not found; .so dependencies will not work!";
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}
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}
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std::string detail;
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{
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ScopedObjectAccess soa(env);
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StackHandleScope<1> hs(soa.Self());
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Handle<mirror::ClassLoader> classLoader(
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hs.NewHandle(soa.Decode<mirror::ClassLoader*>(javaLoader)));
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JavaVMExt* vm = Runtime::Current()->GetJavaVM();
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bool success = vm->LoadNativeLibrary(filename.c_str(), classLoader, &detail);
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if (success) {
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return nullptr;
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}
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}
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// Don't let a pending exception from JNI_OnLoad cause a CheckJNI issue with NewStringUTF.
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env->ExceptionClear();
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return env->NewStringUTF(detail.c_str());
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}
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static jlong Runtime_maxMemory(JNIEnv*, jclass) {
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return Runtime::Current()->GetHeap()->GetMaxMemory();
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}
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static jlong Runtime_totalMemory(JNIEnv*, jclass) {
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return Runtime::Current()->GetHeap()->GetTotalMemory();
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}
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static jlong Runtime_freeMemory(JNIEnv*, jclass) {
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return Runtime::Current()->GetHeap()->GetFreeMemory();
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}
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static JNINativeMethod gMethods[] = {
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NATIVE_METHOD(Runtime, freeMemory, "!()J"),
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NATIVE_METHOD(Runtime, gc, "()V"),
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NATIVE_METHOD(Runtime, maxMemory, "!()J"),
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NATIVE_METHOD(Runtime, nativeExit, "(I)V"),
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NATIVE_METHOD(Runtime, nativeLoad, "(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/String;"),
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NATIVE_METHOD(Runtime, totalMemory, "!()J"),
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};
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void register_java_lang_Runtime(JNIEnv* env) {
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REGISTER_NATIVE_METHODS("java/lang/Runtime");
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}
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} // namespace art
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