185 lines
6.4 KiB
C++
185 lines
6.4 KiB
C++
/*
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* Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <string.h>
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#include "jvmti.h"
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#include "agent_common.hpp"
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#include "jni_tools.hpp"
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#include "jvmti_tools.hpp"
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extern "C" {
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/* ============================================================================= */
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/* scaffold objects */
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static jlong timeout = 0;
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/* constant names */
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#define THREAD_NAME "TestedThread"
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/* ============================================================================= */
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/** Agent algorithm. */
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static void JNICALL
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agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
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/* Original agentProc test block starts here: */
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NSK_DISPLAY0("Wait for thread to start\n");
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// SP2.1-n - notify agent is waiting and wait
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// SP3.1-w - wait to start test
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if (!nsk_jvmti_waitForSync(timeout))
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return;
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/* perform testing */
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{
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jthread testedThread = nullptr;
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NSK_DISPLAY1("Find thread: %s\n", THREAD_NAME);
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if (!NSK_VERIFY((testedThread =
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nsk_jvmti_threadByName(THREAD_NAME)) != nullptr))
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return;
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NSK_DISPLAY1(" ... found thread: %p\n", (void*)testedThread);
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NSK_DISPLAY1("Suspend thread: %p\n", (void*)testedThread);
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if (!NSK_JVMTI_VERIFY(jvmti->SuspendThread(testedThread))) {
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nsk_jvmti_setFailStatus();
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return;
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}
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NSK_DISPLAY0("Let thread to run and finish\n");
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// SP5.1-n - notify suspend done
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if (!nsk_jvmti_resumeSync())
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return;
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NSK_DISPLAY1("Get state vector for thread: %p\n", (void*)testedThread);
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{
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jint state = 0;
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if (!NSK_JVMTI_VERIFY(jvmti->GetThreadState(testedThread, &state))) {
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nsk_jvmti_setFailStatus();
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}
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NSK_DISPLAY2(" ... got state vector: %s (%d)\n",
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TranslateState(state), (int)state);
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if ((state & JVMTI_THREAD_STATE_SUSPENDED) == 0) {
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NSK_COMPLAIN2("SuspendThread() does not turn on flag SUSPENDED:\n"
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"# state: %s (%d)\n",
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TranslateState(state), (int)state);
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nsk_jvmti_setFailStatus();
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}
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}
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NSK_DISPLAY1("Resume thread: %p\n", (void*)testedThread);
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if (!NSK_JVMTI_VERIFY(jvmti->ResumeThread(testedThread))) {
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nsk_jvmti_setFailStatus();
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}
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/* Original agentProc test block ends here. */
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while (true) {
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jvmtiError l_err;
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NSK_DISPLAY1("INFO: Late suspend thread: %p\n", (void*)testedThread);
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l_err = jvmti->SuspendThread(testedThread);
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if (l_err != JVMTI_ERROR_NONE) {
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if (l_err != JVMTI_ERROR_THREAD_NOT_ALIVE) {
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NSK_DISPLAY1("INFO: Late suspend thread err: %d\n", l_err);
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nsk_jvmti_setFailStatus();
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}
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// testedThread has exited so we're done with late calls
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break;
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}
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// Only resume a thread if suspend worked. Using NSK_DISPLAY1()
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// here because we want ResumeThread() to be faster.
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NSK_DISPLAY1("INFO: Late resume thread: %p\n", (void*)testedThread);
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if (!NSK_JVMTI_VERIFY(jvmti->ResumeThread(testedThread))) {
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nsk_jvmti_setFailStatus();
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break;
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}
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}
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/* Second part of original agentProc test block starts here: */
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NSK_DISPLAY0("Wait for thread to finish\n");
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// SP4.1-n - notify agent is waiting and wait
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// SP6.1-w - wait to end test
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if (!nsk_jvmti_waitForSync(timeout))
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return;
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NSK_DISPLAY0("Delete thread reference\n");
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NSK_TRACE(jni->DeleteGlobalRef(testedThread));
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}
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NSK_DISPLAY0("Let debugee to finish\n");
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// SP7.1-n - notify agent end
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if (!nsk_jvmti_resumeSync())
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return;
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/* Second part of original agentProc test block ends here. */
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}
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/* ============================================================================= */
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/** Agent library initialization. */
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_suspendthrd003(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_suspendthrd003(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_suspendthrd003(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiEnv* jvmti = nullptr;
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/* init framework and parse options */
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if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
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return JNI_ERR;
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timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
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/* create JVMTI environment */
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if (!NSK_VERIFY((jvmti =
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nsk_jvmti_createJVMTIEnv(jvm, reserved)) != nullptr))
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return JNI_ERR;
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/* add specific capabilities for suspending thread */
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{
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jvmtiCapabilities suspendCaps;
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memset(&suspendCaps, 0, sizeof(suspendCaps));
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suspendCaps.can_suspend = 1;
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if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&suspendCaps)))
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return JNI_ERR;
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}
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/* register agent proc and arg */
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if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, nullptr)))
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return JNI_ERR;
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return JNI_OK;
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}
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/* ============================================================================= */
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}
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