/* * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #include #include "jvmti.h" #include "agent_common.h" #include "jni_tools.h" #include "jvmti_tools.h" extern "C" { /* ============================================================================= */ /* scaffold objects */ static jlong timeout = 0; /* This is how long we verify that the thread has really suspended (in ms) */ static jlong verificationTime = 5 * 1000; /* constant names */ #define THREAD_NAME "TestedThread" /* constants */ #define EVENTS_COUNT 1 /* events list */ static jvmtiEvent eventsList[EVENTS_COUNT] = { JVMTI_EVENT_THREAD_END }; static volatile int eventsReceived = 0; static jthread testedThread = NULL; /* ============================================================================= */ /** Agent algorithm. */ static void JNICALL agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { NSK_DISPLAY0("Wait for thread to start\n"); if (!nsk_jvmti_waitForSync(timeout)) return; /* perform testing */ { NSK_DISPLAY1("Find thread: %s\n", THREAD_NAME); if (!NSK_VERIFY((testedThread = nsk_jvmti_threadByName(THREAD_NAME)) != NULL)) return; NSK_DISPLAY1(" ... found thread: %p\n", (void*)testedThread); eventsReceived = 0; NSK_DISPLAY1("Enable event: %s\n", "THREAD_END"); if (!nsk_jvmti_enableEvents(JVMTI_ENABLE, EVENTS_COUNT, eventsList, NULL)) return; NSK_DISPLAY1("Suspend thread: %p\n", (void*)testedThread); if (!NSK_JVMTI_VERIFY(jvmti->SuspendThread(testedThread))) { nsk_jvmti_setFailStatus(); return; } NSK_DISPLAY0("Let thread to run and finish\n"); if (!nsk_jvmti_resumeSync()) return; NSK_DISPLAY1("Check that THREAD_END event NOT received for timeout: %ld ms\n", (long)verificationTime); { jlong delta = 1000; jlong time; for (time = 0; time < verificationTime; time += delta) { if (eventsReceived > 0) { NSK_COMPLAIN0("Thread ran and finished after suspension\n"); nsk_jvmti_setFailStatus(); break; } nsk_jvmti_sleep(delta); } } NSK_DISPLAY1("Disable event: %s\n", "THREAD_END"); if (!nsk_jvmti_enableEvents(JVMTI_DISABLE, EVENTS_COUNT, eventsList, NULL)) return; NSK_DISPLAY1("Resume thread: %p\n", (void*)testedThread); if (!NSK_JVMTI_VERIFY(jvmti->ResumeThread(testedThread))) { nsk_jvmti_setFailStatus(); } NSK_DISPLAY0("Wait for thread to finish\n"); if (!nsk_jvmti_waitForSync(timeout)) return; NSK_DISPLAY0("Delete thread reference\n"); NSK_TRACE(jni->DeleteGlobalRef(testedThread)); } NSK_DISPLAY0("Let debugee to finish\n"); if (!nsk_jvmti_resumeSync()) return; } /* ============================================================================= */ /** THREAD_END callback. */ JNIEXPORT void JNICALL callbackThreadEnd(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) { /* check if event is for tested thread */ if (thread != NULL && jni->IsSameObject(testedThread, thread)) { NSK_DISPLAY1(" ... received THREAD_END event for tested thread: %p\n", (void*)thread); eventsReceived++; } else { NSK_DISPLAY1(" ... received THREAD_END event for unknown thread: %p\n", (void*)thread); } } /* ============================================================================= */ /** Agent library initialization. */ #ifdef STATIC_BUILD JNIEXPORT jint JNICALL Agent_OnLoad_suspendthrd002(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNICALL Agent_OnAttach_suspendthrd002(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNI_OnLoad_suspendthrd002(JavaVM *jvm, char *options, void *reserved) { return JNI_VERSION_1_8; } #endif jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { jvmtiEnv* jvmti = NULL; /* init framework and parse options */ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) return JNI_ERR; timeout = nsk_jvmti_getWaitTime() * 60 * 1000; /* create JVMTI environment */ if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) return JNI_ERR; /* add specific capabilities for suspending thread */ { jvmtiCapabilities suspendCaps; memset(&suspendCaps, 0, sizeof(suspendCaps)); suspendCaps.can_suspend = 1; if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&suspendCaps))) return JNI_ERR; } /* set callbacks for THREAD_END event */ { jvmtiEventCallbacks callbacks; memset(&callbacks, 0, sizeof(callbacks)); callbacks.ThreadEnd = callbackThreadEnd; if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks)))) return JNI_ERR; } /* register agent proc and arg */ if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) return JNI_ERR; return JNI_OK; } /* ============================================================================= */ }