| /* |
| * 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" |
| #include "jvmti_FollowRefObjects.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* ============================================================================= */ |
| |
| static jlong g_timeout = 0; |
| |
| #define JAVA_LANG_STRING_CLASS_NAME "java/lang/String" |
| #define JAVA_IO_SERIALIZABLE_CLASS_NAME "java/io/Serializable" |
| #define JAVA_UTIL_CALENDAR_CLASS_NAME "java/util/Calendar" |
| |
| static jobject g_jniGlobalRef = 0; |
| static jweak g_jniWeakGlobalRef = 0; |
| |
| static jvmtiHeapCallbacks g_heapCallbacks; |
| |
| /* ============================================================================= */ |
| |
| 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) |
| { |
| CHECK_USER_DATA(user_data); |
| |
| printHeapRefCallbackInfo(reference_kind, reference_info, class_tag, referrer_class_tag, size, tag_ptr, referrer_tag_ptr, length); |
| |
| markTagVisited(DEREF(tag_ptr)); |
| markRefToVerify(DEREF(referrer_tag_ptr), DEREF(tag_ptr), reference_kind); |
| |
| return JVMTI_VISIT_OBJECTS; |
| |
| } /* heapReferenceCallback */ |
| |
| |
| jint JNICALL primitiveFieldCallback( |
| jvmtiHeapReferenceKind reference_kind, |
| const jvmtiHeapReferenceInfo* reference_info, |
| jlong class_tag, |
| jlong* tag_ptr, |
| jvalue value, |
| jvmtiPrimitiveType value_type, |
| void* user_data) |
| { |
| CHECK_USER_DATA(user_data); |
| |
| printf(" primitiveFieldCallback: ref=%s," |
| " class_tag=%-3ld, tag=%-3ld, type=%c\n", |
| g_refKindStr[reference_kind], |
| (long) class_tag, |
| (long) DEREF(tag_ptr), |
| (int ) value_type); |
| |
| fflush(0); |
| |
| markTagVisited(DEREF(tag_ptr)); |
| |
| return JVMTI_VISIT_OBJECTS; |
| |
| } /* primitiveFieldCallback */ |
| |
| |
| jint JNICALL arrayPrimitiveValueCallback( |
| jlong class_tag, |
| jlong size, |
| jlong* tag_ptr, |
| jint element_count, |
| jvmtiPrimitiveType element_type, |
| const void* elements, |
| void* user_data) |
| { |
| CHECK_USER_DATA(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); |
| |
| markTagVisited(DEREF(tag_ptr)); |
| |
| return JVMTI_VISIT_OBJECTS; |
| |
| } /* arrayPrimitiveValueCallback */ |
| |
| |
| 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); |
| |
| markTagVisited(DEREF(tag_ptr)); |
| |
| return JVMTI_VISIT_OBJECTS; |
| |
| } /* stringPrimitiveValueCallback */ |
| |
| /* ============================================================================= */ |
| |
| static void createGlobalRefs(JNIEnv * jni) |
| { |
| jclass klass; |
| |
| if ( ! NSK_JNI_VERIFY(jni, (klass = NSK_CPP_STUB2(FindClass, jni, JAVA_LANG_STRING_CLASS_NAME)) != NULL) ) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| if ( ! NSK_JNI_VERIFY(jni, (g_jniGlobalRef = NSK_CPP_STUB2(NewGlobalRef, jni, klass)) != NULL) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| if ( ! NSK_JNI_VERIFY(jni, (g_jniWeakGlobalRef = NSK_CPP_STUB2(NewWeakGlobalRef, jni, klass)) != NULL) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| } /* createGlobalRefs */ |
| |
| /** Agent algorithm. */ |
| |
| static void JNICALL agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) |
| { |
| jvmtiError retCode; |
| |
| printf(">>> Sync with Java code\n"); |
| fflush(0); |
| |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(g_timeout))) { |
| return; |
| } |
| |
| printf(">>> Create JNI global references\n"); |
| fflush(0); |
| |
| createGlobalRefs(jni); |
| |
| retCode = NSK_CPP_STUB6(FollowReferences, |
| jvmti, |
| (jint) 0, /* heap filter */ |
| NULL, /* class */ |
| NULL, /* inital object */ |
| &g_heapCallbacks, |
| (const void *) &g_fakeUserData); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_NONE) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| checkThatAllTagsVisited(); |
| |
| printf(">>> Let debugee to finish\n"); |
| fflush(0); |
| |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) { |
| return; |
| } |
| |
| } /* agentProc */ |
| |
| |
| /* ============================================================================= */ |
| |
| /** Agent library initialization. */ |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_followref004(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_followref004(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_followref004(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; |
| } |
| |
| g_timeout = nsk_jvmti_getWaitTime() * 60 * 1000; |
| |
| if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) { |
| return JNI_ERR; |
| } |
| |
| /* Setting Heap Callbacks */ |
| memset(&g_heapCallbacks, 0, sizeof(g_heapCallbacks)); |
| g_heapCallbacks.heap_iteration_callback = NULL; |
| g_heapCallbacks.heap_reference_callback = heapReferenceCallback; |
| g_heapCallbacks.primitive_field_callback = primitiveFieldCallback; |
| g_heapCallbacks.array_primitive_value_callback = arrayPrimitiveValueCallback; |
| g_heapCallbacks.string_primitive_value_callback = stringPrimitiveValueCallback; |
| |
| jvmti_FollowRefObject_init(); |
| |
| { |
| 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; |
| |
| } /* Agent_OnLoad */ |
| |
| |
| /* ============================================================================= */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
