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