100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
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/*
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* Copyright (C) 2017 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 "common_helper.h"
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#include "jni.h"
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#include "jvmti.h"
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#include "jvmti_helper.h"
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#include "scoped_local_ref.h"
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#include "test_env.h"
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namespace art {
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namespace common_stack_trace {
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extern "C" JNIEXPORT jint JNICALL Java_art_StackTrace_GetStackDepth(
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JNIEnv* env, jclass, jthread thr) {
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jint ret;
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JvmtiErrorToException(env, jvmti_env, jvmti_env->GetFrameCount(thr, &ret));
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return ret;
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}
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extern "C" JNIEXPORT jobjectArray Java_art_StackTrace_nativeGetStackTrace(JNIEnv* env,
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jclass,
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jthread thr) {
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jint depth;
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ScopedLocalRef<jclass> klass(env, env->FindClass("art/StackTrace$StackFrameData"));
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if (env->ExceptionCheck()) {
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return nullptr;
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}
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jmethodID constructor = env->GetMethodID(
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klass.get(), "<init>", "(Ljava/lang/Thread;Ljava/lang/reflect/Executable;JI)V");
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if (env->ExceptionCheck()) {
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return nullptr;
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}
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if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetFrameCount(thr, &depth))) {
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return nullptr;
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}
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// Just give some extra space.
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depth += 10;
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jvmtiFrameInfo* frames;
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if (JvmtiErrorToException(
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env, jvmti_env, jvmti_env->Allocate(depth * sizeof(jvmtiFrameInfo),
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reinterpret_cast<unsigned char**>(&frames)))) {
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return nullptr;
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}
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jint nframes = 0;
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if (JvmtiErrorToException(
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env, jvmti_env, jvmti_env->GetStackTrace(thr, 0, depth, frames, &nframes))) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
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return nullptr;
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}
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jobjectArray frames_array = env->NewObjectArray(nframes, klass.get(), nullptr);
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if (env->ExceptionCheck()) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
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return nullptr;
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}
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for (jint i = 0; i < nframes; i++) {
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jobject jmethod = GetJavaMethod(jvmti_env, env, frames[i].method);
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if (env->ExceptionCheck()) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
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return nullptr;
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}
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jobject frame_obj = env->NewObject(klass.get(),
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constructor,
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thr,
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jmethod,
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frames[i].location,
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i);
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if (env->ExceptionCheck()) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
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return nullptr;
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}
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env->SetObjectArrayElement(frames_array, i, frame_obj);
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if (env->ExceptionCheck()) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
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return nullptr;
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}
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}
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
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return frames_array;
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}
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} // namespace common_stack_trace
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} // namespace art
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