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