| /* |
| * 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 <string.h> |
| #include "jvmti.h" |
| #include "agent_common.h" |
| #include "jni_tools.h" |
| #include "jvmti_tools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* ============================================================================= */ |
| |
| static jlong timeout = 0; |
| |
| static long objectCount = 0; |
| static int userData = 0, allocationError = 0; |
| |
| typedef struct ObjectDescStruct { |
| jlong tag; |
| jlong size; |
| } ObjectDesc; |
| |
| static ObjectDesc *objectDescBuf; |
| static jvmtiEnv* st_jvmti = NULL; |
| static const char debugeeClassSignature[] = "Lnsk/jvmti/IterateOverInstancesOfClass/iterinstcls004;"; |
| |
| /* ============================================================================= */ |
| |
| /* ============================================================================= */ |
| |
| |
| /** jvmtiHeapObjectCallback for first iteration. */ |
| jvmtiIterationControl JNICALL |
| heapObjectCallback1(jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| void* userData) { |
| |
| objectCount++; |
| /* Set tag */ |
| *tag_ptr = objectCount; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(Allocate, st_jvmti, (sizeof(ObjectDesc)), |
| (unsigned char**)&objectDescBuf))) { |
| nsk_jvmti_setFailStatus(); |
| allocationError = 1; |
| } |
| |
| (*objectDescBuf).tag = *tag_ptr; |
| (*objectDescBuf).size = size; |
| |
| return JVMTI_ITERATION_ABORT; |
| } |
| |
| /** jvmtiHeapObjectCallback for second iteration. */ |
| jvmtiIterationControl JNICALL |
| heapObjectCallback2(jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| void* userData) { |
| |
| objectCount--; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(Deallocate, st_jvmti, (unsigned char*)objectDescBuf))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| return JVMTI_ITERATION_ABORT; |
| } |
| |
| /* ============================================================================= */ |
| |
| /** Agent algorithm. */ |
| static void JNICALL |
| agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { |
| |
| NSK_DISPLAY0("Wait for debugee start\n"); |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) |
| return; |
| |
| { |
| jclass debugeeClass = NULL; |
| |
| do { |
| NSK_DISPLAY1("Find debugee class: %s\n", debugeeClassSignature); |
| debugeeClass = nsk_jvmti_classBySignature(debugeeClassSignature); |
| if (debugeeClass == NULL) { |
| nsk_jvmti_setFailStatus(); |
| break; |
| } |
| |
| NSK_DISPLAY0("Calling IterateOverInstancesOfClass with filter JVMTI_HEAP_OBJECT_UNTAGGED\n"); |
| { |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB5(IterateOverInstancesOfClass, |
| jvmti, |
| debugeeClass, |
| JVMTI_HEAP_OBJECT_UNTAGGED, |
| heapObjectCallback1, |
| &userData))) { |
| nsk_jvmti_setFailStatus(); |
| break; |
| } |
| } |
| |
| if (objectCount == 0) { |
| NSK_COMPLAIN0("First IterateOverInstancesOfClass call had not visited any object\n"); |
| nsk_jvmti_setFailStatus(); |
| break; |
| } else { |
| NSK_DISPLAY1("Number of objects the IterateOverInstancesOfClass visited: %d\n", objectCount); |
| } |
| |
| if (allocationError) break; |
| |
| NSK_DISPLAY0("Calling IterateOverInstancesOfClass with filter JVMTI_HEAP_OBJECT_TAGGED\n"); |
| { |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB5(IterateOverInstancesOfClass, |
| jvmti, |
| debugeeClass, |
| JVMTI_HEAP_OBJECT_TAGGED, |
| heapObjectCallback2, |
| &userData))) { |
| nsk_jvmti_setFailStatus(); |
| break; |
| } |
| } |
| |
| if (objectCount > 0) { |
| NSK_COMPLAIN0("Second IterateOverInstancesOfClass call had not visited any object\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| } while (0); |
| } |
| |
| NSK_DISPLAY0("Let debugee to finish\n"); |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) |
| return; |
| } |
| |
| /* ============================================================================= */ |
| |
| /* ============================================================================= */ |
| |
| /** Agent library initialization. */ |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_iterinstcls004(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_iterinstcls004(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_iterinstcls004(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiEnv* jvmti = NULL; |
| |
| if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) |
| return JNI_ERR; |
| |
| timeout = nsk_jvmti_getWaitTime() * 60 * 1000; |
| |
| if (!NSK_VERIFY((jvmti = |
| nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) |
| return JNI_ERR; |
| |
| /* save pointer to environment to use it in callbacks */ |
| st_jvmti = jvmti; |
| |
| { |
| jvmtiCapabilities caps; |
| |
| memset(&caps, 0, sizeof(caps)); |
| caps.can_tag_objects = 1; |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) { |
| return JNI_ERR; |
| } |
| } |
| |
| if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) |
| return JNI_ERR; |
| |
| return JNI_OK; |
| } |
| |
| /* ============================================================================= */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |