/* * Copyright (c) 2004, 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; /* test objects */ static int eventsCount = 0; /* ========================================================================== */ /* check if any VMObjectAlloc events received */ static int checkVMObjectAllocEvents() { NSK_DISPLAY1("VMObjectAlloc events received: %d\n", eventsCount); if (eventsCount == 0) { NSK_DISPLAY0("# WARNING: no VMObjectAlloc events\n"); NSK_DISPLAY0("# (VM might not allocate such objects at all)\n"); } return NSK_TRUE; } /* ========================================================================== */ JNIEXPORT void JNICALL VMObjectAlloc(jvmtiEnv *jvmti, JNIEnv* jni, jthread thread, jobject object, jclass object_klass, jlong size) { char *signature, *generic; eventsCount++; if (!NSK_JVMTI_VERIFY(jvmti->GetClassSignature(object_klass, &signature, &generic))) { nsk_jvmti_setFailStatus(); return; } NSK_DISPLAY2("VMObjectAlloc: \"%s\", size=%d\n", signature, size); if (signature != NULL) jvmti->Deallocate((unsigned char*)signature); if (generic != NULL) jvmti->Deallocate((unsigned char*)generic); } /* ========================================================================== */ /* agent algorithm */ static void JNICALL agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { /* wait for debuggee start */ if (!nsk_jvmti_waitForSync(timeout)) return; /* testcase #1: check if any VMObjectAlloc events received*/ NSK_DISPLAY0("Testcase #1: check if any VMObjectAlloc events received\n"); if (!checkVMObjectAllocEvents()) nsk_jvmti_setFailStatus(); /* resume debugee after last sync */ if (!nsk_jvmti_resumeSync()) return; } /* ========================================================================== */ /* agent library initialization */ #ifdef STATIC_BUILD JNIEXPORT jint JNICALL Agent_OnLoad_vmobjalloc001(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNICALL Agent_OnAttach_vmobjalloc001(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNI_OnLoad_vmobjalloc001(JavaVM *jvm, char *options, void *reserved) { return JNI_VERSION_1_8; } #endif jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { jvmtiEnv* jvmti = NULL; jvmtiCapabilities caps; jvmtiEventCallbacks callbacks; /* init framework and parse options */ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) return JNI_ERR; timeout = nsk_jvmti_getWaitTime() * 60000; NSK_DISPLAY1("Timeout: %d msc\n", (int)timeout); /* create JVMTI environment */ if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) return JNI_ERR; memset(&caps, 0, sizeof(caps)); caps.can_generate_vm_object_alloc_events = 1; if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) { return JNI_ERR; } memset(&callbacks, 0, sizeof(callbacks)); callbacks.VMObjectAlloc= &VMObjectAlloc; if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks)))) return JNI_ERR; /* enable VMObjectAlloc event */ if (!NSK_JVMTI_VERIFY( jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_OBJECT_ALLOC, NULL))) return JNI_ERR; /* register agent proc and arg */ if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) return JNI_ERR; return JNI_OK; } /* ========================================================================== */ }