| /* |
| * 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 <stdio.h> |
| #include <string.h> |
| #include <jvmti.h> |
| #include "agent_common.h" |
| |
| #include "nsk_tools.h" |
| #include "jni_tools.h" |
| #include "JVMTITools.h" |
| #include "jvmti_tools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #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(NSK_CPP_STUB3(SetTag, |
| jvmti, 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( |
| NSK_CPP_STUB3(SetTag, jvmti, |
| 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( |
| NSK_CPP_STUB5(IterateOverInstancesOfClass, |
| jvmti, |
| 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\t\ |
| expected 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( |
| NSK_CPP_STUB4(IterateOverHeap, |
| jvmti, |
| 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\t\ |
| expected 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 = |
| NSK_CPP_STUB4(GetStaticFieldID, jni, |
| debugeeClass, |
| "catcher", |
| DEBUGEE_SIGNATURE)) != NULL )) { |
| nsk_jvmti_setFailStatus(); |
| break; |
| } |
| |
| if (!NSK_JNI_VERIFY(jni, (catcher = |
| NSK_CPP_STUB3(GetStaticObjectField, jni, |
| 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( |
| NSK_CPP_STUB4(IterateOverObjectsReachableFromObject, jvmti, |
| 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\t\ |
| expected 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(NSK_CPP_STUB2(AddCapabilities, |
| jvmti, &caps))) |
| return JNI_ERR; |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities, |
| jvmti, &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(NSK_CPP_STUB3(SetEventCallbacks, |
| jvmti, &callbacks, sizeof(callbacks)))) |
| return JNI_ERR; |
| |
| NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n"); |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode, |
| jvmti, 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; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
