| /* |
| * 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 OBJ_MAX_COUNT 100000 |
| |
| static JNIEnv *jni = NULL; |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiEventCallbacks callbacks; |
| static jvmtiCapabilities caps; |
| |
| static jlong timeout = 0; |
| |
| static const char* DEBUGEE_SIGNATURE = "Lnsk/jvmti/scenarios/allocation/AP04/ap04t002;"; |
| static const char* ROOT_SIGNATURE = "[Lnsk/jvmti/scenarios/allocation/AP04/ap04t002;"; |
| |
| static volatile int modificationCount = 0; |
| static volatile int iterationCount = 0; |
| static volatile int errorCount = 0; |
| |
| static jclass debugeeClass = NULL; |
| static jfieldID rootFieldID; |
| static jfieldID modifiedFieldID; |
| |
| /***********************************************************************/ |
| |
| static jrawMonitorID counterMonitor_ptr = NULL; |
| |
| static void increaseCounter(volatile int* counterPtr) { |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(RawMonitorEnter, jvmti, counterMonitor_ptr))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| (*counterPtr)++; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(RawMonitorExit, jvmti, counterMonitor_ptr))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| static void setCounter(volatile int* counterPtr, int value) { |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(RawMonitorEnter, jvmti, counterMonitor_ptr))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| *counterPtr = value; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(RawMonitorExit, jvmti, counterMonitor_ptr))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| static int getCounter(volatile int* counterPtr) { |
| int result; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(RawMonitorEnter, jvmti, counterMonitor_ptr))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| result = *counterPtr; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(RawMonitorExit, jvmti, counterMonitor_ptr))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| return result; |
| } |
| |
| /***********************************************************************/ |
| |
| jvmtiIterationControl JNICALL |
| heapObjectCallback( jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| void* user_data) { |
| |
| int count = 0; |
| |
| /* clean modificationCounter on first iteration */ |
| if (getCounter(&iterationCount) == 0) { |
| setCounter(&modificationCount, 0); |
| } |
| increaseCounter(&iterationCount); |
| |
| /* check if modificationCounter is 0 for each iteration */ |
| count = getCounter(&modificationCount); |
| if (count > 0) { |
| setCounter(&errorCount, count); |
| } |
| |
| return JVMTI_ITERATION_CONTINUE; |
| } |
| |
| /* jvmtiHeapRootCallback */ |
| jvmtiIterationControl JNICALL |
| heapRootCallback( jvmtiHeapRootKind root_kind, |
| jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| void* user_data) { |
| |
| int count = 0; |
| |
| /* clean modificationCounter on first iteration */ |
| if (getCounter(&iterationCount) == 0) { |
| setCounter(&modificationCount, 0); |
| } |
| increaseCounter(&iterationCount); |
| |
| /* check if modificationCounter is 0 for each iteration */ |
| count = getCounter(&modificationCount); |
| if (count > 0) { |
| setCounter(&errorCount, count); |
| } |
| |
| return JVMTI_ITERATION_CONTINUE; |
| } |
| |
| /* jvmtiStackReferenceCallback */ |
| jvmtiIterationControl JNICALL |
| stackReferenceCallback( jvmtiHeapRootKind root_kind, |
| jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| jlong thread_tag, |
| jint depth, |
| jmethodID method, |
| jint slot, |
| void* user_data) { |
| |
| int count = 0; |
| |
| /* clean modificationCounter on first iteration */ |
| if (getCounter(&iterationCount) == 0) { |
| setCounter(&modificationCount, 0); |
| } |
| increaseCounter(&iterationCount); |
| |
| /* check if modificationCounter is 0 for each iteration */ |
| count = getCounter(&modificationCount); |
| if (count > 0) { |
| setCounter(&errorCount, count); |
| } |
| |
| return JVMTI_ITERATION_CONTINUE; |
| } |
| |
| |
| /* jvmtiObjectReferenceCallback */ |
| jvmtiIterationControl JNICALL |
| objectReferenceCallback( jvmtiObjectReferenceKind reference_kind, |
| jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| jlong referrer_tag, |
| jint referrer_index, |
| void* user_data) { |
| |
| int count = 0; |
| |
| /* clean modificationCounter on first iteration */ |
| if (getCounter(&iterationCount) == 0) { |
| setCounter(&modificationCount, 0); |
| } |
| increaseCounter(&iterationCount); |
| |
| /* check if modificationCounter is 0 for each iteration */ |
| count = getCounter(&modificationCount); |
| if (count > 0) { |
| setCounter(&errorCount, count); |
| } |
| |
| return JVMTI_ITERATION_CONTINUE; |
| } |
| |
| |
| /***********************************************************************/ |
| |
| void JNICALL |
| FieldModification( jvmtiEnv *jvmti_env, |
| JNIEnv *env, |
| jthread thr, |
| jmethodID method, |
| jlocation location, |
| jclass field_klass, |
| jobject obj, |
| jfieldID field, |
| char sig, |
| jvalue new_value ) { |
| |
| increaseCounter(&modificationCount); |
| } |
| |
| /***********************************************************************/ |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_scenarios_allocation_AP04_ap04t002_setTag( JNIEnv* jni, |
| jclass klass, |
| jobject target, /* object to be tagged */ |
| jlong tag ) { |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetTag, jvmti, target, tag))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_scenarios_allocation_AP04_ap04t002_runIterateOverHeap( JNIEnv* jni, |
| jclass klass ) { |
| int count = 0; |
| |
| setCounter(&errorCount, 0); |
| setCounter(&modificationCount, 0); |
| setCounter(&iterationCount, 0); |
| |
| NSK_DISPLAY0("Calling IterateOverHeap...\n"); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB4(IterateOverHeap, jvmti, |
| JVMTI_HEAP_OBJECT_TAGGED, |
| heapObjectCallback, |
| NULL /*user_data*/))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| NSK_DISPLAY0("IterateOverHeap finished.\n"); |
| |
| NSK_DISPLAY1("Iterations count: %d\n", getCounter(&iterationCount)); |
| NSK_DISPLAY1("Modifications count: %d\n", getCounter(&modificationCount)); |
| |
| count = getCounter(&errorCount); |
| NSK_DISPLAY1("Errors detected: %d\n", count); |
| // because of racing in FieldModification event, one event can be fired before safepoint occures |
| if (count > 1) { |
| NSK_COMPLAIN1("FieldMofification events detected during heap iteration: %d\n", count); |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_scenarios_allocation_AP04_ap04t002_runIterateOverReachableObjects( JNIEnv* jni, |
| jclass klass ) { |
| int count = 0; |
| |
| setCounter(&errorCount, 0); |
| setCounter(&modificationCount, 0); |
| setCounter(&iterationCount, 0); |
| |
| NSK_DISPLAY0("Calling IterateOverReachableObjects...\n"); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB5(IterateOverReachableObjects, jvmti, |
| heapRootCallback, |
| stackReferenceCallback, |
| objectReferenceCallback, |
| NULL /*user_data*/))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| NSK_DISPLAY0("IterateOverReachableObjects finished.\n"); |
| |
| NSK_DISPLAY1("Iterations count: %d\n", getCounter(&iterationCount)); |
| NSK_DISPLAY1("Modifications count: %d\n", getCounter(&modificationCount)); |
| |
| count = getCounter(&errorCount); |
| NSK_DISPLAY1("Errors detected: %d\n", count); |
| // because of racing in FieldModification event, one event can be fired before safepoint occures |
| if (count > 1) { |
| NSK_COMPLAIN1("FieldMofification events detected during heap iteration: %d\n", count); |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_scenarios_allocation_AP04_ap04t002_runIterateOverInstancesOfClass( JNIEnv* jni, |
| jclass klass ) { |
| int count = 0; |
| |
| setCounter(&errorCount, 0); |
| setCounter(&modificationCount, 0); |
| setCounter(&iterationCount, 0); |
| |
| NSK_DISPLAY0("Calling IterateOverInstancesOfClass...\n"); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB5(IterateOverInstancesOfClass, jvmti, |
| debugeeClass, |
| JVMTI_HEAP_OBJECT_TAGGED, |
| heapObjectCallback, |
| NULL /*user_data*/))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| NSK_DISPLAY0("IterateOverInstancesOfClass finished.\n"); |
| |
| NSK_DISPLAY1("Iterations count: %d\n", getCounter(&iterationCount)); |
| NSK_DISPLAY1("Modifications count: %d\n", getCounter(&modificationCount)); |
| |
| count = getCounter(&errorCount); |
| NSK_DISPLAY1("Errors detected: %d\n", count); |
| // because of racing in FieldModification event, one event can be fired before safepoint occures |
| if (count > 1) { |
| NSK_COMPLAIN1("FieldMofification events detected during heap iteration: %d\n", count); |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_scenarios_allocation_AP04_ap04t002_runIterateOverObjectsReachableFromObject( JNIEnv* jni, |
| jclass klass ) { |
| jobject root = NULL; |
| int count = 0; |
| |
| if (!NSK_JNI_VERIFY(jni, (root = |
| NSK_CPP_STUB3(GetStaticObjectField, jni, |
| debugeeClass, |
| rootFieldID )) != NULL )) { |
| NSK_COMPLAIN0("GetStaticObjectField returned NULL for 'root' field value\n\n"); |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| setCounter(&errorCount, 0); |
| setCounter(&modificationCount, 0); |
| setCounter(&iterationCount, 0); |
| |
| NSK_DISPLAY0("Calling IterateOverObjectsReachableFromObject...\n"); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB4(IterateOverObjectsReachableFromObject, jvmti, |
| root, |
| objectReferenceCallback, |
| NULL /*user_data*/))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| NSK_DISPLAY0("IterateOverObjectsReachableFromObject finished.\n"); |
| |
| NSK_DISPLAY1("Iterations count: %d\n", getCounter(&iterationCount)); |
| NSK_DISPLAY1("Modifications count: %d\n", getCounter(&modificationCount)); |
| |
| count = getCounter(&errorCount); |
| NSK_DISPLAY1("Errors detected: %d\n", count); |
| // because of racing in FieldModification event, one event can be fired before safepoint occures |
| if (count > 1) { |
| NSK_COMPLAIN1("FieldMofification events detected during heap iteration: %d\n", count); |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| static void JNICALL |
| agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { |
| |
| NSK_DISPLAY0("Wait for debugee start\n\n"); |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) |
| return; |
| |
| NSK_DISPLAY1("Find debugee class: %s\n", DEBUGEE_SIGNATURE); |
| debugeeClass = nsk_jvmti_classBySignature(DEBUGEE_SIGNATURE); |
| if (debugeeClass == NULL) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| if (!NSK_JNI_VERIFY(jni, (debugeeClass = |
| NSK_CPP_STUB2(NewGlobalRef, jni, debugeeClass)) != NULL)) |
| return; |
| |
| NSK_DISPLAY1("Find ID of 'root' field: %s\n", ROOT_SIGNATURE); |
| if (!NSK_JNI_VERIFY(jni, (rootFieldID = |
| NSK_CPP_STUB4(GetStaticFieldID, jni, |
| debugeeClass, |
| "root", |
| ROOT_SIGNATURE)) != NULL )) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| NSK_DISPLAY0("Find ID of 'modified' field\n"); |
| if (!NSK_JNI_VERIFY(jni, (modifiedFieldID = |
| NSK_CPP_STUB4(GetStaticFieldID, jni, |
| debugeeClass, |
| "modified", |
| "I")) != NULL )) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| NSK_DISPLAY0("Set FieldModification watchpoint for 'modified' field\n"); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(SetFieldModificationWatch, jvmti, |
| debugeeClass, |
| modifiedFieldID))) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| NSK_DISPLAY0("Let debugee to run test cases\n"); |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) |
| return; |
| |
| NSK_DISPLAY0("Wait for completion of test cases\n\n"); |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) |
| return; |
| |
| NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, debugeeClass)); |
| NSK_TRACE(NSK_CPP_STUB2(DestroyRawMonitor, jvmti, counterMonitor_ptr)); |
| |
| NSK_DISPLAY0("Let debugee to finish\n"); |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) |
| return; |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_ap04t002(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_ap04t002(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_ap04t002(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; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(CreateRawMonitor, jvmti, "counterMonitor", &counterMonitor_ptr))) { |
| return JNI_ERR; |
| } |
| |
| memset(&caps, 0, sizeof(jvmtiCapabilities)); |
| caps.can_tag_objects = 1; |
| caps.can_generate_field_modification_events = 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_tag_objects) |
| NSK_DISPLAY0("Warning: tagging objects is not available\n"); |
| if (!caps.can_generate_field_modification_events) |
| NSK_DISPLAY0("Warning: generation of field modification events is not available\n"); |
| |
| /* set event callback */ |
| NSK_DISPLAY0("setting event callbacks ...\n"); |
| (void) memset(&callbacks, 0, sizeof(callbacks)); |
| |
| callbacks.FieldModification = &FieldModification; |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks, |
| jvmti, &callbacks, sizeof(callbacks)))) |
| return JNI_ERR; |
| |
| NSK_DISPLAY0("setting event callbacks done.\n"); |
| |
| NSK_DISPLAY0("enabling JVMTI events ...\n"); |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4( SetEventNotificationMode, |
| jvmti, |
| JVMTI_ENABLE, |
| JVMTI_EVENT_FIELD_MODIFICATION, |
| NULL))) |
| return JNI_ERR; |
| NSK_DISPLAY0("enabling the events done.\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 |
