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/*
* Copyright (C) 2017 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 "jni.h"
#include "jvmti.h"
#include <vector>
#include "jvmti_helper.h"
#include "test_env.h"
namespace art {
namespace common_suspension {
extern "C" JNIEXPORT jboolean JNICALL Java_art_Suspension_isSuspended(
JNIEnv* env, jclass, jthread thr) {
jint state;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetThreadState(thr, &state))) {
return false;
}
return (state & JVMTI_THREAD_STATE_SUSPENDED) != 0;
}
static std::vector<jthread> CopyToVector(JNIEnv* env, jobjectArray thrs) {
jsize len = env->GetArrayLength(thrs);
std::vector<jthread> ret;
for (jsize i = 0; i < len; i++) {
ret.push_back(reinterpret_cast<jthread>(env->GetObjectArrayElement(thrs, i)));
}
return ret;
}
extern "C" JNIEXPORT jintArray JNICALL Java_art_Suspension_resumeList(JNIEnv* env,
jclass,
jobjectArray thr) {
static_assert(sizeof(jvmtiError) == sizeof(jint), "cannot use jintArray as jvmtiError array");
std::vector<jthread> threads(CopyToVector(env, thr));
if (env->ExceptionCheck()) {
return nullptr;
}
jintArray ret = env->NewIntArray(threads.size());
if (env->ExceptionCheck()) {
return nullptr;
}
jint* elems = env->GetIntArrayElements(ret, nullptr);
JvmtiErrorToException(env, jvmti_env,
jvmti_env->ResumeThreadList(threads.size(),
threads.data(),
reinterpret_cast<jvmtiError*>(elems)));
env->ReleaseIntArrayElements(ret, elems, 0);
return ret;
}
extern "C" JNIEXPORT jintArray JNICALL Java_art_Suspension_suspendList(JNIEnv* env,
jclass,
jobjectArray thrs) {
static_assert(sizeof(jvmtiError) == sizeof(jint), "cannot use jintArray as jvmtiError array");
std::vector<jthread> threads(CopyToVector(env, thrs));
if (env->ExceptionCheck()) {
return nullptr;
}
jintArray ret = env->NewIntArray(threads.size());
if (env->ExceptionCheck()) {
return nullptr;
}
jint* elems = env->GetIntArrayElements(ret, nullptr);
JvmtiErrorToException(env, jvmti_env,
jvmti_env->SuspendThreadList(threads.size(),
threads.data(),
reinterpret_cast<jvmtiError*>(elems)));
env->ReleaseIntArrayElements(ret, elems, 0);
return ret;
}
extern "C" JNIEXPORT void JNICALL Java_art_Suspension_resume(JNIEnv* env, jclass, jthread thr) {
JvmtiErrorToException(env, jvmti_env, jvmti_env->ResumeThread(thr));
}
extern "C" JNIEXPORT void JNICALL Java_art_Suspension_suspend(JNIEnv* env, jclass, jthread thr) {
JvmtiErrorToException(env, jvmti_env, jvmti_env->SuspendThread(thr));
}
} // namespace common_suspension
} // namespace art