upload android base code part3
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257
android/art/test/911-get-stack-trace/stack_trace.cc
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257
android/art/test/911-get-stack-trace/stack_trace.cc
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/*
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* Copyright (C) 2013 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 <inttypes.h>
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#include <memory>
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#include <stdio.h>
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#include "android-base/logging.h"
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#include "android-base/stringprintf.h"
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#include "jni.h"
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#include "jvmti.h"
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#include "scoped_local_ref.h"
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// Test infrastructure
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#include "jni_binder.h"
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#include "jni_helper.h"
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#include "jvmti_helper.h"
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#include "test_env.h"
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#include "ti_macros.h"
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namespace art {
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namespace Test911GetStackTrace {
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using android::base::StringPrintf;
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static jint FindLineNumber(jint line_number_count,
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jvmtiLineNumberEntry* line_number_table,
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jlocation location) {
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if (line_number_table == nullptr) {
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return -2;
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}
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jint line_number = -1;
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for (jint i = 0; i != line_number_count; ++i) {
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if (line_number_table[i].start_location > location) {
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return line_number;
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}
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line_number = line_number_table[i].line_number;
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}
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return line_number;
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}
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static jobjectArray TranslateJvmtiFrameInfoArray(JNIEnv* env,
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jvmtiFrameInfo* frames,
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jint count) {
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auto callback = [&](jint method_index) -> jobjectArray {
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char* name;
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char* sig;
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char* gen;
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{
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jvmtiError result2 = jvmti_env->GetMethodName(frames[method_index].method, &name, &sig, &gen);
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if (JvmtiErrorToException(env, jvmti_env, result2)) {
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return nullptr;
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}
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}
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jint line_number_count;
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jvmtiLineNumberEntry* line_number_table;
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{
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jvmtiError line_result = jvmti_env->GetLineNumberTable(frames[method_index].method,
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&line_number_count,
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&line_number_table);
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if (line_result != JVMTI_ERROR_NONE) {
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// Accept absent info and native method errors.
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if (line_result != JVMTI_ERROR_ABSENT_INFORMATION &&
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line_result != JVMTI_ERROR_NATIVE_METHOD) {
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JvmtiErrorToException(env, jvmti_env, line_result);
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return nullptr;
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}
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line_number_table = nullptr;
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line_number_count = 0;
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}
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}
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auto inner_callback = [&](jint component_index) -> jstring {
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switch (component_index) {
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case 0:
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return (name == nullptr) ? nullptr : env->NewStringUTF(name);
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case 1:
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return (sig == nullptr) ? nullptr : env->NewStringUTF(sig);
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case 2:
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return env->NewStringUTF(StringPrintf("%" PRId64, frames[method_index].location).c_str());
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case 3: {
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jint line_number = FindLineNumber(line_number_count,
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line_number_table,
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frames[method_index].location);
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return env->NewStringUTF(StringPrintf("%d", line_number).c_str());
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}
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}
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LOG(FATAL) << "Unreachable";
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UNREACHABLE();
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};
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jobjectArray inner_array = CreateObjectArray(env, 4, "java/lang/String", inner_callback);
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if (name != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(name));
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}
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if (sig != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(sig));
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}
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if (gen != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(gen));
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}
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if (line_number_table != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(line_number_table));
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}
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return inner_array;
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};
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return CreateObjectArray(env, count, "[Ljava/lang/String;", callback);
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}
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_PrintThread_getStackTrace(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jthread thread, jint start, jint max) {
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std::unique_ptr<jvmtiFrameInfo[]> frames(new jvmtiFrameInfo[max]);
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jint count;
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{
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jvmtiError result = jvmti_env->GetStackTrace(thread, start, max, frames.get(), &count);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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}
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return TranslateJvmtiFrameInfoArray(env, frames.get(), count);
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}
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_AllTraces_getAllStackTraces(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jint max) {
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jint thread_count;
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jvmtiStackInfo* stack_infos;
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{
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jvmtiError result = jvmti_env->GetAllStackTraces(max, &stack_infos, &thread_count);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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}
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auto callback = [&](jint thread_index) -> jobject {
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auto inner_callback = [&](jint index) -> jobject {
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if (index == 0) {
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return stack_infos[thread_index].thread;
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} else {
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return TranslateJvmtiFrameInfoArray(env,
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stack_infos[thread_index].frame_buffer,
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stack_infos[thread_index].frame_count);
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}
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};
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return CreateObjectArray(env, 2, "java/lang/Object", inner_callback);
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};
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jobjectArray ret = CreateObjectArray(env, thread_count, "[Ljava/lang/Object;", callback);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(stack_infos));
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return ret;
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}
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_ThreadListTraces_getThreadListStackTraces(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobjectArray jthreads, jint max) {
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jint thread_count = env->GetArrayLength(jthreads);
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std::unique_ptr<jthread[]> threads(new jthread[thread_count]);
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for (jint i = 0; i != thread_count; ++i) {
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threads[i] = env->GetObjectArrayElement(jthreads, i);
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}
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jvmtiStackInfo* stack_infos;
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{
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jvmtiError result = jvmti_env->GetThreadListStackTraces(thread_count,
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threads.get(),
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max,
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&stack_infos);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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}
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auto callback = [&](jint thread_index) -> jobject {
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auto inner_callback = [&](jint index) -> jobject {
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if (index == 0) {
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return stack_infos[thread_index].thread;
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} else {
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return TranslateJvmtiFrameInfoArray(env,
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stack_infos[thread_index].frame_buffer,
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stack_infos[thread_index].frame_count);
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}
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};
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return CreateObjectArray(env, 2, "java/lang/Object", inner_callback);
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};
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jobjectArray ret = CreateObjectArray(env, thread_count, "[Ljava/lang/Object;", callback);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(stack_infos));
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return ret;
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}
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extern "C" JNIEXPORT jint JNICALL Java_art_Frames_getFrameCount(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jthread thread) {
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jint count;
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jvmtiError result = jvmti_env->GetFrameCount(thread, &count);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return -1;
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}
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return count;
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}
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Frames_getFrameLocation(
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JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jthread thread, jint depth) {
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jmethodID method;
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jlocation location;
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jvmtiError result = jvmti_env->GetFrameLocation(thread, depth, &method, &location);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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auto callback = [&](jint index) -> jobject {
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switch (index) {
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case 0:
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{
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jclass decl_class;
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jvmtiError class_result = jvmti_env->GetMethodDeclaringClass(method, &decl_class);
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if (JvmtiErrorToException(env, jvmti_env, class_result)) {
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return nullptr;
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}
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jint modifiers;
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jvmtiError mod_result = jvmti_env->GetMethodModifiers(method, &modifiers);
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if (JvmtiErrorToException(env, jvmti_env, mod_result)) {
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return nullptr;
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}
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constexpr jint kStatic = 0x8;
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return env->ToReflectedMethod(decl_class,
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method,
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(modifiers & kStatic) != 0 ? JNI_TRUE : JNI_FALSE);
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}
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case 1:
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return env->NewStringUTF(
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android::base::StringPrintf("%x", static_cast<uint32_t>(location)).c_str());
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}
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LOG(FATAL) << "Unreachable";
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UNREACHABLE();
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};
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jobjectArray ret = CreateObjectArray(env, 2, "java/lang/Object", callback);
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return ret;
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}
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} // namespace Test911GetStackTrace
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} // namespace art
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