| /* |
| * 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 void verifyReturnCodes(JNIEnv* jni, jvmtiEnv* jvmti) |
| { |
| jvmtiError retCode; |
| jlong tag; |
| jvmtiHeapCallbacks emptyHeapCallbacks; |
| |
| NSK_DISPLAY0("FollowReferences: Invalid class:"); |
| |
| retCode = NSK_CPP_STUB6(FollowReferences, |
| jvmti, |
| (jint) 0, /* heap filter */ |
| (jclass) &g_wrongHeapCallbacks , /* invalid class, but valid memory address */ |
| NULL, /* inital object */ |
| &g_wrongHeapCallbacks, |
| (const void *) &g_fakeUserData); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_INVALID_CLASS ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("FollowReferences: Invalid initial object:"); |
| // When FollowReferences() is called with an invalid initial object |
| // the behaviour according to the jvmti spec is optional. |
| // It may return JVMTI_ERROR_INVALID_OBJECT and not follow any references. |
| // Or it may treat the object as NULL, and follow all references. |
| // |
| // We will accept both behaviours. We use empty callbacks since the existing |
| // callback marks the test as failed. |
| |
| emptyHeapCallbacks.heap_iteration_callback = NULL; |
| emptyHeapCallbacks.heap_reference_callback = NULL; |
| emptyHeapCallbacks.primitive_field_callback = NULL; |
| emptyHeapCallbacks.array_primitive_value_callback = NULL; |
| emptyHeapCallbacks.string_primitive_value_callback = NULL; |
| retCode = NSK_CPP_STUB6(FollowReferences, |
| jvmti, |
| (jint) 0, // heap filter |
| NULL, // class |
| (jobject) &g_wrongHeapCallbacks, // invalid inital object |
| &emptyHeapCallbacks, // No callbacks |
| (const void *) &g_fakeUserData); |
| |
| // Accept both JVMTI_ERROR_INVALID_OBJECT and JVMTI_ERROR_NONE |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_INVALID_OBJECT || retCode == JVMTI_ERROR_NONE ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("FollowReferences: Invalid callbacks:"); |
| |
| retCode = NSK_CPP_STUB6(FollowReferences, |
| jvmti, |
| (jint) 0, /* heap filter */ |
| NULL, /* class */ |
| NULL, /* inital object */ |
| NULL, |
| (const void *) &g_fakeUserData); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_NULL_POINTER ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("GetTag: Invalid object:"); |
| |
| retCode = NSK_CPP_STUB3(GetTag, |
| jvmti, |
| (jobject) &g_wrongHeapCallbacks, /* invalid inital object */ |
| &tag); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_INVALID_OBJECT ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("GetTag: NULL object pointer:"); |
| |
| retCode = NSK_CPP_STUB3(GetTag, |
| jvmti, |
| NULL, |
| &tag); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_INVALID_OBJECT ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("GetTag: NULL tag pointer:"); |
| |
| retCode = NSK_CPP_STUB3(GetTag, |
| jvmti, |
| (jobject) &g_wrongHeapCallbacks, |
| NULL); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_NULL_POINTER ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("SetTag: Invalid object:"); |
| |
| tag = 1; |
| retCode = NSK_CPP_STUB3(SetTag, |
| jvmti, |
| (jobject) &g_wrongHeapCallbacks, /* invalid inital object */ |
| tag); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_INVALID_OBJECT ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("SetTag: NULL object pointer:"); |
| |
| retCode = NSK_CPP_STUB3(GetTag, |
| jvmti, |
| NULL, |
| &tag); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_INVALID_OBJECT ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("GetTag: NULL tag pointer:"); |
| |
| } /* verifyReturnCodes */ |
| |
| /* ============================================================================= */ |
| |
| static void checkNoObjIterated(JNIEnv* jni, jvmtiEnv* jvmti, const char * szClassName) |
| { |
| jvmtiError retCode; |
| jclass klass; |
| |
| NSK_DISPLAY1("Verify, that no objects are returned if initial object is %s", szClassName); |
| if (!NSK_JNI_VERIFY(jni, (klass = |
| NSK_CPP_STUB2(FindClass, jni, szClassName)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| retCode = NSK_CPP_STUB6(FollowReferences, |
| jvmti, |
| (jint) 0, /* heap filter */ |
| klass, /* class */ |
| NULL, /* inital object */ |
| &g_wrongHeapCallbacks, |
| (const void *) &g_fakeUserData); |
| |
| if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_NONE ) ) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| } /* checkNoObjIterated */ |
| |
| /* ============================================================================= */ |
| |
| /** Agent algorithm. */ |
| |
| static void JNICALL agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) |
| { |
| NSK_DISPLAY0("Call FollowReferences() with invalid arguments and check return codes"); |
| |
| verifyReturnCodes(jni, jvmti); |
| checkNoObjIterated(jni, jvmti, JAVA_IO_SERIALIZABLE_CLASS_NAME); |
| checkNoObjIterated(jni, jvmti, JAVA_UTIL_CALENDAR_CLASS_NAME); |
| |
| NSK_DISPLAY0("Let debugee to finish"); |
| fflush(0); |
| |
| if (!NSK_VERIFY(nsk_jvmti_waitForSync(g_timeout))) { |
| return; |
| } |
| |
| if (!NSK_VERIFY(nsk_jvmti_resumeSync())) { |
| return; |
| } |
| |
| } /* agentProc */ |
| |
| |
| /* ============================================================================= */ |
| |
| /** Agent library initialization. */ |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_followref006(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_followref006(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_followref006(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; |
| } |
| |
| 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 |
