| /* |
| * Copyright (c) 2007, 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; |
| |
| #define DEBUGEE_CLASS_NAME "nsk/jvmti/unit/FollowReferences/followref002" |
| #define ROOT_OBJECT_CLASS_NAME "nsk/jvmti/unit/FollowReferences/followref002RootTestedClass" |
| #define ROOT_OBJECT_CLASS_SIG "L"ROOT_OBJECT_CLASS_NAME";" |
| #define CHAIN_OBJECT_CLASS_NAME "nsk/jvmti/unit/FollowReferences/followref002TestedClass" |
| #define CHAIN_OBJECT_CLASS_SIG "L"CHAIN_OBJECT_CLASS_NAME";" |
| |
| #define OBJECT_FIELD_NAME "object" |
| #define REACHABLE_CHAIN_FIELD_NAME "reachableChain" |
| #define UNREACHABLE_CHAIN_FIELD_NAME "unreachableChain" |
| #define TAIL_FIELD_NAME "tail" |
| |
| |
| #define DEFAULT_CHAIN_LENGTH 3 |
| |
| typedef struct ObjectDescStruct { |
| jlong tag; /* Tag of the object */ |
| jlong exp_class_tag; /* Expected tag of the object class */ |
| jlong class_tag; /* Reported tag of the object class */ |
| jint exp_found; /* Expected number of iterations through the object */ |
| jint found; /* Reported number of iterations through the object */ |
| } ObjectDesc; |
| |
| static int chainLength = 0; |
| static int objectsCount = 0; |
| static int fakeUserData = 0; |
| static int userDataError = 0; |
| |
| static ObjectDesc* objectDescList = NULL; |
| |
| static jlong rootClassTag = 9; |
| static jlong chainClassTag = 99; |
| static jlong rootObjectTag = 10; |
| static jlong chainObjectTag = 100; |
| |
| static jvmtiHeapCallbacks heapCallbacks = {0}; |
| |
| static const char* ref_kind_str[28] = { |
| "unknown_0", |
| "JVMTI_HEAP_REFERENCE_CLASS", |
| "JVMTI_HEAP_REFERENCE_FIELD", |
| "JVMTI_HEAP_REFERENCE_ARRAY_ELEMENT", |
| "JVMTI_HEAP_REFERENCE_CLASS_LOADER", |
| "JVMTI_HEAP_REFERENCE_SIGNERS", |
| "JVMTI_HEAP_REFERENCE_PROTECTION_DOMAIN", |
| "JVMTI_HEAP_REFERENCE_INTERFACE", |
| "JVMTI_HEAP_REFERENCE_STATIC_FIELD", |
| "JVMTI_HEAP_REFERENCE_CONSTANT_POOL", |
| "unknown_10", "unknown_11", "unknown_12", |
| "unknown_13", "unknown_14", "unknown_15", "unknown_16", |
| "unknown_17", "unknown_18", "unknown_19", "unknown_20", |
| "JVMTI_HEAP_REFERENCE_JNI_GLOBAL", |
| "JVMTI_HEAP_REFERENCE_SYSTEM_CLASS", |
| "JVMTI_HEAP_REFERENCE_MONITOR", |
| "JVMTI_HEAP_REFERENCE_STACK_LOCAL", |
| "JVMTI_HEAP_REFERENCE_JNI_LOCAL", |
| "JVMTI_HEAP_REFERENCE_THREAD", |
| "JVMTI_HEAP_REFERENCE_OTHER" |
| }; |
| |
| #define DEREF(ptr) (((ptr) == NULL ? 0 : *(ptr))) |
| |
| /* ============================================================================= */ |
| |
| /** Obtain chain of tested objects and tag them recursively. */ |
| static int getAndTagChainObjects( |
| jvmtiEnv* jvmti, |
| JNIEnv* jni, |
| jobject firstObject, |
| jfieldID firstField, |
| const char firstFieldName[], |
| jfieldID nextField, |
| const char nextFieldName[], |
| int count, |
| ObjectDesc objectDescList[], |
| jlong tag, |
| int reachable) |
| { |
| jobject obj = NULL; |
| jlong objTag = (reachable ? tag : -tag); |
| |
| if (count <= 0) |
| return NSK_TRUE; |
| |
| count--; |
| tag++; |
| |
| if (!NSK_JNI_VERIFY(jni, (obj = |
| NSK_CPP_STUB3(GetObjectField, jni, firstObject, firstField)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| |
| objectDescList[count].tag = objTag; |
| if (reachable) { |
| objectDescList[count].exp_found++; |
| } |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetTag, jvmti, obj, objTag))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| printf(" tag=%-5ld object=0x%p\n", (long)objTag, (void*)obj); |
| fflush(0); |
| if (!getAndTagChainObjects(jvmti, jni, obj, |
| nextField, |
| nextFieldName, |
| nextField, |
| nextFieldName, |
| count, |
| objectDescList, |
| tag, |
| reachable)) { |
| return NSK_FALSE; |
| } |
| |
| NSK_TRACE(NSK_CPP_STUB2(DeleteLocalRef, jni, obj)); |
| return NSK_TRUE; |
| } /* getAndTagChainObjects */ |
| |
| /** Obtain all tested objects from debugee class and tag them recursively. */ |
| static int getAndTagTestedObjects( |
| jvmtiEnv* jvmti, |
| JNIEnv* jni, |
| int chainLength, |
| int* objectsCount, |
| ObjectDesc** objectDescList, |
| jobject* rootObject) |
| { |
| jclass debugeeClass = NULL; |
| jclass rootObjectClass = NULL; |
| jclass chainObjectClass = NULL; |
| |
| jfieldID objectField = NULL; |
| jfieldID reachableChainField = NULL; |
| jfieldID unreachableChainField = NULL; |
| jfieldID tailField = NULL; |
| |
| /* root object + reachable and unreachable object chains */ |
| *objectsCount = 1 + 2 * chainLength; |
| |
| printf("Allocate memory for objects list: %d objects\n", *objectsCount); |
| fflush(0); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(Allocate, jvmti, (*objectsCount * sizeof(ObjectDesc)), |
| (unsigned char**)objectDescList))) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... allocated array: 0x%p\n", (void*)objectDescList); |
| fflush(0); |
| |
| { |
| int k; |
| for (k = 0; k < *objectsCount; k++) { |
| (*objectDescList)[k].tag = 0; |
| (*objectDescList)[k].exp_class_tag = chainClassTag; |
| (*objectDescList)[k].exp_found = 0; |
| (*objectDescList)[k].found = 0; |
| } |
| } |
| (*objectDescList)[0].exp_class_tag = rootClassTag; |
| |
| printf("Find debugee class: %s\n", DEBUGEE_CLASS_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (debugeeClass = |
| NSK_CPP_STUB2(FindClass, jni, DEBUGEE_CLASS_NAME)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... found class: 0x%p\n", (void*)debugeeClass); |
| |
| printf("Find root object class: %s\n", ROOT_OBJECT_CLASS_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (rootObjectClass = |
| NSK_CPP_STUB2(FindClass, jni, ROOT_OBJECT_CLASS_NAME)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... found class: 0x%p\n", (void*)rootObjectClass); |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetTag, jvmti, rootObjectClass, rootClassTag))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| printf(" tag=%-5ld rootClass=0x%p\n", (long)rootClassTag, (void*)rootObjectClass); |
| |
| printf("Find chain object class: %s\n", CHAIN_OBJECT_CLASS_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (chainObjectClass = |
| NSK_CPP_STUB2(FindClass, jni, CHAIN_OBJECT_CLASS_NAME)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... found class: 0x%p\n", (void*)chainObjectClass); |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetTag, jvmti, chainObjectClass, chainClassTag))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| printf(" tag=%-5ld chainClass=0x%p\n", (long)chainClassTag, (void*)chainObjectClass); |
| |
| printf("Find static field in debugee class: %s\n", OBJECT_FIELD_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (objectField = |
| NSK_CPP_STUB4(GetStaticFieldID, jni, debugeeClass, |
| OBJECT_FIELD_NAME, ROOT_OBJECT_CLASS_SIG)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... got fieldID: 0x%p\n", (void*)objectField); |
| |
| printf("Find instance field in root object class: %s\n", REACHABLE_CHAIN_FIELD_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (reachableChainField = |
| NSK_CPP_STUB4(GetFieldID, jni, rootObjectClass, |
| REACHABLE_CHAIN_FIELD_NAME, CHAIN_OBJECT_CLASS_SIG)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... got fieldID: 0x%p\n", (void*)reachableChainField); |
| |
| printf("Find instance field in root object class: %s\n", UNREACHABLE_CHAIN_FIELD_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (unreachableChainField = |
| NSK_CPP_STUB4(GetFieldID, jni, rootObjectClass, |
| UNREACHABLE_CHAIN_FIELD_NAME, CHAIN_OBJECT_CLASS_SIG)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... got fieldID: 0x%p\n", (void*)unreachableChainField); |
| |
| printf("Find instance field in chain object class: %s\n", TAIL_FIELD_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (tailField = |
| NSK_CPP_STUB4(GetFieldID, jni, chainObjectClass, |
| TAIL_FIELD_NAME, CHAIN_OBJECT_CLASS_SIG)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... got fieldID: 0x%p\n", (void*)tailField); |
| |
| printf("Get root object from static field: %s\n", OBJECT_FIELD_NAME); |
| fflush(0); |
| if (!NSK_JNI_VERIFY(jni, (*rootObject = |
| NSK_CPP_STUB3(GetStaticObjectField, jni, debugeeClass, |
| objectField)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... got object: 0x%p\n", (void*)*rootObject); |
| fflush(0); |
| |
| if (!NSK_JNI_VERIFY(jni, (*rootObject = |
| NSK_CPP_STUB2(NewGlobalRef, jni, *rootObject)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| printf(" ... global ref: 0x%p\n", (void*)*rootObject); |
| |
| printf("Obtain and tag chain objects:\n"); |
| |
| printf(" root tested object:\n"); |
| fflush(0); |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetTag, jvmti, *rootObject, rootObjectTag))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| printf(" tag=%-5ld object=0x%p\n", (long)rootObjectTag, (void*)*rootObject); |
| |
| (*objectDescList)[0].tag = rootObjectTag; |
| |
| /* Root object must be referenced 1 time */ |
| (*objectDescList)[0].exp_found = 1; |
| |
| /* Object with tag=101 must be referenced 2 times */ |
| (*objectDescList)[chainLength].exp_found = 1; |
| |
| printf(" reachable objects chain: %d objects\n", chainLength); |
| fflush(0); |
| if (!getAndTagChainObjects(jvmti, jni, *rootObject, |
| reachableChainField, |
| REACHABLE_CHAIN_FIELD_NAME, |
| tailField, |
| TAIL_FIELD_NAME, |
| chainLength, |
| (*objectDescList) + 1, |
| chainObjectTag, |
| NSK_TRUE)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| |
| printf(" unreachable objects chain: %d objects\n", chainLength); |
| if (!getAndTagChainObjects(jvmti, jni, *rootObject, |
| unreachableChainField, |
| UNREACHABLE_CHAIN_FIELD_NAME, |
| tailField, |
| TAIL_FIELD_NAME, |
| chainLength, |
| (*objectDescList) + 1 + chainLength, |
| chainObjectTag, |
| NSK_FALSE)) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| |
| return NSK_TRUE; |
| } /* getAndTagTestedObjects */ |
| |
| /** Check if tagged objects were iterated. */ |
| static int checkTestedObjects(jvmtiEnv* jvmti, JNIEnv* jni, |
| int chainLength, ObjectDesc objectDescList[]) { |
| int success = NSK_TRUE; |
| int i, idx; |
| |
| printf("Following tagged objects were iterated:\n"); |
| |
| printf("Root tested object:\n"); |
| printf(" tag: %ld\n" |
| " expected to iterate: %d times\n" |
| " iterated: %d times\n", |
| (long) objectDescList[0].tag, |
| objectDescList[0].exp_found, |
| objectDescList[0].found); |
| if (objectDescList[0].found != objectDescList[0].exp_found) { |
| NSK_COMPLAIN1("Root tested object unexpectedly iterated %d times\n", |
| objectDescList[0].found); |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| printf("\nReachable objects:\n"); |
| fflush(0); |
| for (i = 0; i < chainLength; i++) { |
| idx = i + 1; |
| printf("Reachable object:\n" |
| " tag: %-3ld\n" |
| " expected to iterate: %d times\n" |
| " iterated: %d times\n", |
| (long) objectDescList[idx].tag, |
| objectDescList[idx].exp_found, |
| objectDescList[idx].found); |
| if (objectDescList[i + 1].found <= 0 && objectDescList[i + 1].exp_found > 0) { |
| NSK_COMPLAIN0("Reachable object was not iterated\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| if (objectDescList[idx].found != objectDescList[idx].exp_found) { |
| NSK_COMPLAIN0("Reachable object was iterated unexpected number of times\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| printf("\nUnreachable objects:\n"); |
| for (i = 0; i < chainLength; i++) { |
| idx = i + 1 + chainLength; |
| |
| printf("Unreachable object:\n" |
| " tag: %ld\n" |
| " expected to iterate: %d times\n" |
| " iterated: %d times\n", |
| (long) objectDescList[idx].tag, |
| objectDescList[idx].exp_found, |
| objectDescList[idx].found); |
| if (objectDescList[idx].found > 0) { |
| NSK_COMPLAIN0("Unreachable object was iterated\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| fflush(0); |
| } |
| |
| return NSK_TRUE; |
| } /* checkTestedObjects */ |
| |
| /** Release references to the tested objects and free allocated memory. */ |
| static int releaseTestedObjects(jvmtiEnv* jvmti, JNIEnv* jni, int chainLength, |
| ObjectDesc* objectDescList, jobject rootObject) { |
| if (rootObject != NULL) { |
| printf("Release object reference to root tested object: 0x%p\n", rootObject); |
| NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, rootObject)); |
| } |
| |
| if (objectDescList != NULL) { |
| printf("Deallocate objects list: 0x%p\n", (void*)objectDescList); |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)objectDescList))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| fflush(0); |
| return NSK_TRUE; |
| } /* releaseTestedObjects */ |
| |
| /* ============================================================================= */ |
| |
| /** heapReferenceCallback for heap iterator. */ |
| jint JNICALL heapReferenceCallback( |
| jvmtiHeapReferenceKind reference_kind, |
| const jvmtiHeapReferenceInfo* reference_info, |
| jlong class_tag, |
| jlong referrer_class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| jlong* referrer_tag_ptr, |
| jint length, |
| void* user_data) |
| { |
| jint referrer_index = 0; |
| jlong tag = DEREF(tag_ptr); |
| jlong ref_tag = DEREF(referrer_tag_ptr); |
| |
| switch (reference_kind) { |
| case JVMTI_HEAP_REFERENCE_CONSTANT_POOL: |
| referrer_index = reference_info->constant_pool.index; |
| break; |
| case JVMTI_HEAP_REFERENCE_FIELD: |
| case JVMTI_HEAP_REFERENCE_STATIC_FIELD: |
| referrer_index = reference_info->field.index; |
| break; |
| case JVMTI_HEAP_REFERENCE_ARRAY_ELEMENT: |
| referrer_index = reference_info->array.index; |
| break; |
| case JVMTI_HEAP_REFERENCE_STACK_LOCAL: |
| referrer_index = reference_info->stack_local.slot; |
| /* Fall through */ |
| case JVMTI_HEAP_REFERENCE_JNI_LOCAL: |
| referrer_index |= reference_info->stack_local.depth << 16; |
| break; |
| default: |
| // TODO: check that realy should be done w/ other jvmtiHeapReferenceKind |
| break; |
| } |
| |
| printf(" heapReferenceCallback: ref=%s, class_tag=%-3ld, tag=%-3ld," |
| " size=%-3ld, ref_tag=%-3ld, ref_idx=%#x\n", |
| ref_kind_str[reference_kind], |
| (long) class_tag, |
| (long) tag, |
| (long) size, |
| (long) ref_tag, |
| (int ) referrer_index); |
| fflush(0); |
| |
| if (tag_ptr == NULL) { |
| NSK_COMPLAIN1("NULL tag_ptr is passed to heapReferenceCallback:" |
| " tag_ptr=0x%p\n", (void*)tag_ptr); |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| if (tag_ptr != NULL && *tag_ptr != 0) { |
| int found = 0; |
| int i; |
| |
| for (i = 0; i < objectsCount; i++) { |
| if (*tag_ptr == objectDescList[i].tag) { |
| found++; |
| objectDescList[i].found++; |
| |
| if (*tag_ptr < 0) { |
| NSK_COMPLAIN0("Unreachable tagged object is passed to heapReferenceCallback\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| break; |
| } |
| } |
| |
| if (reference_kind != JVMTI_HEAP_REFERENCE_CLASS && found <= 0) { |
| NSK_COMPLAIN0("Unknown tagged object is passed to heapReferenceCallback\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| if (user_data != &fakeUserData && !userDataError) { |
| NSK_COMPLAIN2("Unexpected user_data is passed to heapReferenceCallback:\n" |
| " expected: 0x%p\n" |
| " actual: 0x%p\n", |
| user_data, |
| &fakeUserData); |
| nsk_jvmti_setFailStatus(); |
| userDataError++; |
| } |
| |
| switch (reference_kind) { |
| int i; |
| case JVMTI_HEAP_REFERENCE_CLASS: { |
| if (tag == 0) { |
| break; |
| } |
| if (tag != rootClassTag && tag != chainClassTag) { |
| NSK_COMPLAIN0("Unknown tagged class is passed to heapReferenceCallback\n"); |
| nsk_jvmti_setFailStatus(); |
| } |
| for (i = 0; i < objectsCount; i++) { |
| if (ref_tag == objectDescList[i].tag) { |
| if (objectDescList[i].exp_class_tag != tag) { |
| NSK_COMPLAIN2("Wrong tag in heapReferenceCallback/JVMTI_HEAP_REFERENCE_CLASS:\n" |
| "Expected: %-3ld\n" |
| "Passed: %-3ld\n", |
| objectDescList[i].exp_class_tag, |
| tag); |
| nsk_jvmti_setFailStatus(); |
| } |
| break; |
| } |
| } |
| break; |
| } |
| case JVMTI_HEAP_REFERENCE_JNI_GLOBAL: |
| case JVMTI_HEAP_REFERENCE_SYSTEM_CLASS: |
| case JVMTI_HEAP_REFERENCE_MONITOR: |
| case JVMTI_HEAP_REFERENCE_STACK_LOCAL: |
| case JVMTI_HEAP_REFERENCE_JNI_LOCAL: |
| case JVMTI_HEAP_REFERENCE_THREAD: |
| case JVMTI_HEAP_REFERENCE_OTHER: { |
| NSK_COMPLAIN1("This reference kind was not expected: %s\n", |
| ref_kind_str[reference_kind]); |
| fflush(0); |
| nsk_jvmti_setFailStatus(); |
| return 0; |
| } |
| default: |
| // TODO: check that realy should be done w/ other jvmtiHeapReferenceKind |
| break; |
| } |
| return JVMTI_VISIT_OBJECTS; |
| } |
| |
| jint JNICALL primitiveFieldCallback( |
| jvmtiHeapReferenceKind reference_kind, |
| const jvmtiHeapReferenceInfo* reference_info, |
| jlong class_tag, |
| jlong* tag_ptr, |
| jvalue value, |
| jvmtiPrimitiveType value_type, |
| void* user_data) |
| { |
| printf(" primitiveFieldCallback: ref=%s, class_tag=%-3ld, tag=%-3ld, type=%c\n", |
| ref_kind_str[reference_kind], |
| (long) class_tag, |
| (long) DEREF(tag_ptr), |
| (int ) value_type); |
| fflush(0); |
| return 0; |
| } |
| |
| jint JNICALL arrayPrimitiveValueCallback( |
| jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| jint element_count, |
| jvmtiPrimitiveType element_type, |
| const void* elements, |
| void* user_data) |
| { |
| printf(" arrayPrimitiveValueCallback: class_tag=%-3ld, tag=%-3ld, len=%d, type=%c\n", |
| (long) class_tag, |
| (long) DEREF(tag_ptr), |
| (int ) element_count, |
| (int ) element_type); |
| fflush(0); |
| return 0; |
| } |
| |
| jint JNICALL stringPrimitiveValueCallback( |
| jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| const jchar* value, |
| jint value_length, |
| void* user_data) |
| { |
| printf("stringPrimitiveValueCallback: class_tag=%-3ld, tag=%-3ld, len=%d\n", |
| (long) class_tag, |
| (long) DEREF(tag_ptr), |
| (int ) value_length); |
| fflush(0); |
| return 0; |
| } |
| |
| /* ============================================================================= */ |
| |
| /** Agent algorithm. */ |
| static void JNICALL |
| agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { |
| jobject rootObject = NULL; |
| |
| printf("Wait for tested objects created\n"); |
| fflush(0); |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) { |
| return; |
| } |
| |
| printf(">>> Obtain and tag tested objects from debugee class\n"); |
| fflush(0); |
| { |
| if (!NSK_VERIFY(getAndTagTestedObjects(jvmti, jni, |
| chainLength, &objectsCount, |
| &objectDescList, &rootObject))) { |
| return; |
| } |
| } |
| |
| printf(">>> Let debugee to clean links to unreachable objects\n"); |
| fflush(0); |
| { |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) { |
| return; |
| } |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout))) { |
| return; |
| } |
| } |
| |
| printf("\n\n>>> Start 1-st iteration for root tested object: 0x%p\n", rootObject); |
| fflush(0); |
| { |
| jint heap_filter = JVMTI_HEAP_FILTER_UNTAGGED | JVMTI_HEAP_FILTER_CLASS_UNTAGGED; |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB6(FollowReferences, jvmti, |
| heap_filter, |
| (jclass) NULL, /* class */ |
| rootObject, /* initial_object */ |
| &heapCallbacks, |
| (const void *) &fakeUserData))) |
| { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| } |
| |
| printf(">>> Check if reachable objects were iterated\n"); |
| fflush(0); |
| { |
| if (!checkTestedObjects(jvmti, jni, chainLength, objectDescList)) { |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| |
| { /* Reinstall the expectations */ |
| int k; |
| for (k = 0; k < objectsCount; k++) { |
| (objectDescList)[k].exp_found = 0; |
| (objectDescList)[k].found = 0; |
| } |
| } |
| |
| printf("\n\n>>> Start 2-nd iteration for root tested object: 0x%p\n", rootObject); |
| fflush(0); |
| { |
| /* This time everythig is filtered out */ |
| jint heap_filter = JVMTI_HEAP_FILTER_UNTAGGED | JVMTI_HEAP_FILTER_CLASS_UNTAGGED | |
| JVMTI_HEAP_FILTER_TAGGED | JVMTI_HEAP_FILTER_CLASS_TAGGED; |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB6(FollowReferences, jvmti, |
| heap_filter, |
| (jclass) NULL, /* class */ |
| rootObject, /* initial_object */ |
| &heapCallbacks, |
| (const void *) &fakeUserData))) |
| { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| } |
| |
| printf(">>> Check if reachable objects were not reported this time\n"); |
| fflush(0); |
| { |
| if (!checkTestedObjects(jvmti, jni, chainLength, objectDescList)) { |
| nsk_jvmti_setFailStatus(); |
| } |
| } |
| |
| printf(">>> Clean used data\n"); |
| fflush(0); |
| { |
| if (!NSK_VERIFY(releaseTestedObjects(jvmti, jni, chainLength, objectDescList, rootObject))) { |
| return; |
| } |
| } |
| |
| printf("Let debugee to finish\n"); |
| fflush(0); |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) |
| return; |
| } |
| |
| /* ============================================================================= */ |
| |
| /** Agent library initialization. */ |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_followref002(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_followref002(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_followref002(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; |
| |
| chainLength = nsk_jvmti_findOptionIntValue("objects", DEFAULT_CHAIN_LENGTH); |
| if (!NSK_VERIFY(chainLength > 0)) |
| return JNI_ERR; |
| |
| if (!NSK_VERIFY((jvmti = |
| nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) |
| return JNI_ERR; |
| |
| { |
| 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; |
| } |
| } |
| |
| /* Setting Heap Callbacks */ |
| heapCallbacks.heap_iteration_callback = NULL; |
| heapCallbacks.heap_reference_callback = heapReferenceCallback; |
| heapCallbacks.primitive_field_callback = primitiveFieldCallback; |
| heapCallbacks.array_primitive_value_callback = arrayPrimitiveValueCallback; |
| heapCallbacks.string_primitive_value_callback = stringPrimitiveValueCallback; |
| |
| if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) |
| return JNI_ERR; |
| |
| return JNI_OK; |
| } |
| |
| /* ============================================================================= */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
