/* * 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 #include #include "agent_common.h" #include "nsk_tools.h" #include "jni_tools.h" #include "JVMTITools.h" #include "jvmti_tools.h" extern "C" { #define EXP_OBJ_NUMBER 1 static JNIEnv *jni = NULL; static jvmtiEnv *jvmti = NULL; static jvmtiEventCallbacks callbacks; static jvmtiCapabilities caps; static volatile int obj_free = 0; static volatile long obj_count = 0; static jlong timeout = 0; static int user_data = 0; static const char* DEBUGEE_SIGNATURE = "Lnsk/jvmti/scenarios/allocation/AP03/ap03t001;"; static const jlong DEBUGEE_CLASS_TAG = (jlong)1024; void JNICALL ObjectFree(jvmtiEnv *jvmti_env, jlong tag) { NSK_COMPLAIN1("Received unexpected ObjectFree event for an object with tag %ld\n\n", (long)tag); nsk_jvmti_setFailStatus(); obj_free++; } jvmtiIterationControl JNICALL heapObjectCallback(jlong class_tag, jlong size, jlong* tag_ptr, void* user_data) { if (class_tag == DEBUGEE_CLASS_TAG) { obj_count++; } return JVMTI_ITERATION_CONTINUE; } jvmtiIterationControl JNICALL objectReferenceCallback(jvmtiObjectReferenceKind reference_kind, jlong class_tag, jlong size, jlong* tag_ptr, jlong referrer_tag, jint referrer_index, void* user_data) { if (class_tag == DEBUGEE_CLASS_TAG && *tag_ptr != 0) { obj_count++; } return JVMTI_ITERATION_CONTINUE; } /************************/ JNIEXPORT void JNICALL Java_nsk_jvmti_scenarios_allocation_AP03_ap03t001_setTag(JNIEnv* jni, jobject obj, jlong tag) { if (!NSK_JVMTI_VERIFY(jvmti->SetTag(obj, tag))) { nsk_jvmti_setFailStatus(); } } static void JNICALL agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { jclass debugeeClass = NULL; NSK_DISPLAY0("Wait for debugee start\n\n"); if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) return; do { jobject catcher; jfieldID fid; NSK_DISPLAY1("Find debugee class: %s\n", DEBUGEE_SIGNATURE); debugeeClass = nsk_jvmti_classBySignature(DEBUGEE_SIGNATURE); if (debugeeClass == NULL) { nsk_jvmti_setFailStatus(); break; } NSK_DISPLAY0("Set tag for debugee class\n\n"); if (!NSK_JVMTI_VERIFY(jvmti->SetTag(debugeeClass, DEBUGEE_CLASS_TAG))) { nsk_jvmti_setFailStatus(); break; } NSK_DISPLAY0("Calling IterateOverInstancesOfClass with filter JVMTI_HEAP_OBJECT_TAGGED\n"); obj_count = 0; if (!NSK_JVMTI_VERIFY(jvmti->IterateOverInstancesOfClass(debugeeClass, JVMTI_HEAP_OBJECT_TAGGED, heapObjectCallback, &user_data))) { nsk_jvmti_setFailStatus(); break; } if (obj_count != EXP_OBJ_NUMBER) { nsk_jvmti_setFailStatus(); NSK_COMPLAIN2( "IterateOverInstancesOfClass found unexpected number of objects: %d\n" "\texpected number: %d\n\n", obj_count, EXP_OBJ_NUMBER); } else { NSK_DISPLAY1("Number of objects IterateOverInstancesOfClass has found: %d\n\n", obj_count); } NSK_DISPLAY0("Calling IterateOverHeap with filter JVMTI_HEAP_OBJECT_TAGGED\n"); obj_count = 0; if (!NSK_JVMTI_VERIFY( jvmti->IterateOverHeap(JVMTI_HEAP_OBJECT_TAGGED, heapObjectCallback, &user_data))) { nsk_jvmti_setFailStatus(); break; } if (obj_count != EXP_OBJ_NUMBER) { nsk_jvmti_setFailStatus(); NSK_COMPLAIN2( "IterateOverHeap found unexpected number of objects: %d\n" "\texpected number: %d\n\n", obj_count, EXP_OBJ_NUMBER); } else { NSK_DISPLAY1("Number of objects IterateOverHeap has found: %d\n\n", obj_count); } if (!NSK_JNI_VERIFY(jni, (fid = jni->GetStaticFieldID(debugeeClass, "catcher", DEBUGEE_SIGNATURE)) != NULL)) { nsk_jvmti_setFailStatus(); break; } if (!NSK_JNI_VERIFY(jni, (catcher = jni->GetStaticObjectField(debugeeClass, fid)) != NULL)) { NSK_COMPLAIN0("GetStaticObjectField returned NULL for 'catcher' field value\n\n"); nsk_jvmti_setFailStatus(); break; } NSK_DISPLAY0("Calling IterateOverObjectsReachableFromObject\n"); obj_count = 0; if (!NSK_JVMTI_VERIFY(jvmti->IterateOverObjectsReachableFromObject(catcher, objectReferenceCallback, &user_data))) { nsk_jvmti_setFailStatus(); break; } if (obj_count != EXP_OBJ_NUMBER) { nsk_jvmti_setFailStatus(); NSK_COMPLAIN2( "IterateOverObjectsReachableFromObject found unexpected number of objects: %d\n" "\texpected number: %d\n\n", obj_count, EXP_OBJ_NUMBER); } else { NSK_DISPLAY1("Number of objects IterateOverObjectsReachableFromObject has found: %d\n\n", obj_count); } } while (0); NSK_DISPLAY0("Let debugee to finish\n"); if (!NSK_VERIFY(nsk_jvmti_resumeSync())) return; } #ifdef STATIC_BUILD JNIEXPORT jint JNICALL Agent_OnLoad_ap03t001(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNICALL Agent_OnAttach_ap03t001(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNI_OnLoad_ap03t001(JavaVM *jvm, char *options, void *reserved) { return JNI_VERSION_1_8; } #endif jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { /* init framework and parse options */ if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) return JNI_ERR; /* create JVMTI environment */ if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) return JNI_ERR; memset(&caps, 0, sizeof(jvmtiCapabilities)); caps.can_generate_object_free_events = 1; caps.can_tag_objects = 1; if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) return JNI_ERR; if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps))) return JNI_ERR; if (!caps.can_generate_object_free_events) NSK_DISPLAY0("Warning: generation of object free events is not implemented\n"); if (!caps.can_tag_objects) NSK_DISPLAY0("Warning: tagging objects is not implemented\n"); /* set event callback */ NSK_DISPLAY0("setting event callbacks ...\n"); (void) memset(&callbacks, 0, sizeof(callbacks)); callbacks.ObjectFree = &ObjectFree; if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks)))) return JNI_ERR; NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n"); if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_OBJECT_FREE, NULL))) return JNI_ERR; NSK_DISPLAY0("enabling the events done\n\n"); if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) return JNI_ERR; NSK_DISPLAY0("agentProc has been set\n\n"); return JNI_OK; } }