182 lines
6.1 KiB
C++
182 lines
6.1 KiB
C++
/*
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* Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <string.h>
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#include "jvmti.h"
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#include "agent_common.h"
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#include "jni_tools.h"
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#include "jvmti_tools.h"
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extern "C" {
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/* ============================================================================= */
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static jlong timeout = 0;
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static int fakeUserData = 0, objCounter = 0;
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static jvmtiEnv* st_jvmti = NULL;
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static const char *storage_data = "local_storage_data";
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static void *storage_ptr = NULL;
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static const char* debugeeClassSignature = "Lnsk/jvmti/IterateOverObjectsReachableFromObject/iterobjreachobj004;";
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static const char* objectFieldName = "object";
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/* ============================================================================= */
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jvmtiIterationControl JNICALL
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objectReferenceCallback(jvmtiObjectReferenceKind reference_kind,
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jlong class_tag,
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jlong size,
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jlong* tag_ptr,
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jlong referrer_tag,
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jint referrer_index,
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void* user_data) {
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objCounter++;
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if (!NSK_JVMTI_VERIFY(st_jvmti->SetEnvironmentLocalStorage(storage_data))) {
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nsk_jvmti_setFailStatus();
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}
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if (!NSK_JVMTI_VERIFY(st_jvmti->GetEnvironmentLocalStorage(&storage_ptr))) {
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nsk_jvmti_setFailStatus();
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}
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/* Iterate over only first object */
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return JVMTI_ITERATION_ABORT;
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}
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/* ============================================================================= */
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/** Agent algorithm. */
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static void JNICALL
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agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
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NSK_DISPLAY0("Wait for debugee start\n");
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if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
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return;
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do {
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jclass debugeeClass = NULL;
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jfieldID objectField = NULL;
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jobject object = NULL;
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NSK_DISPLAY1("Find debugee class: %s\n", debugeeClassSignature);
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debugeeClass = nsk_jvmti_classBySignature(debugeeClassSignature);
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if (debugeeClass == NULL) {
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nsk_jvmti_setFailStatus();
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break;
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}
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NSK_DISPLAY1("Find static field in debugee class: %s\n", objectFieldName);
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if (!NSK_JNI_VERIFY(jni, (objectField = jni->GetStaticFieldID(
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debugeeClass, objectFieldName, debugeeClassSignature)) != NULL)) {
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nsk_jvmti_setFailStatus();
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break;
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}
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NSK_DISPLAY1("Find value of static field in debugee class: %s\n", objectFieldName);
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if (!NSK_JNI_VERIFY(jni, (object =
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jni->GetStaticObjectField(debugeeClass, objectField)) != NULL)) {
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nsk_jvmti_setFailStatus();
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break;
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}
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NSK_DISPLAY0("Calling IterateOverObjectsReachableFromObject with filter JVMTI_HEAP_OBJECT_EITHER\n");
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{
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if (!NSK_JVMTI_VERIFY(jvmti->IterateOverObjectsReachableFromObject(
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object, objectReferenceCallback, &fakeUserData))) {
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nsk_jvmti_setFailStatus();
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}
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}
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if (objCounter == 0) {
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NSK_COMPLAIN0("IterateOverObjectsReachableFromObject call had not visited any object\n");
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nsk_jvmti_setFailStatus();
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}
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if (storage_data != storage_ptr) {
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NSK_COMPLAIN2("Local storage address was corrupted: %p ,\n\texpected value: %p\n",
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storage_ptr, storage_data);
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nsk_jvmti_setFailStatus();
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}
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if (strcmp(storage_data, (char *)storage_ptr) != 0) {
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NSK_COMPLAIN2("Local storage was corrupted: %s ,\n\texpected value: %s\n",
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(char *)storage_ptr, storage_data);
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nsk_jvmti_setFailStatus();
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}
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} while (0);
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NSK_DISPLAY0("Let debugee to finish\n");
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if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
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return;
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}
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/* ============================================================================= */
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/** Agent library initialization. */
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_iterobjreachobj004(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_iterobjreachobj004(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_iterobjreachobj004(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiEnv* jvmti = NULL;
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if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
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return JNI_ERR;
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timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
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if (!NSK_VERIFY((jvmti =
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nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
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return JNI_ERR;
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/* save pointer to environment to use it in callbacks */
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st_jvmti = jvmti;
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{
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jvmtiCapabilities caps;
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memset(&caps, 0, sizeof(caps));
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caps.can_tag_objects = 1;
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if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) {
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return JNI_ERR;
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}
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}
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if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
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return JNI_ERR;
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return JNI_OK;
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}
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/* ============================================================================= */
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}
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