225 lines
6.5 KiB
C
225 lines
6.5 KiB
C
/*
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* Copyright (c) 2003, 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 <stdio.h>
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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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#define PASSED 0
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#define STATUS_FAILED 2
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static jvmtiEnv *jvmti;
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static jint result = PASSED;
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/*
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* Class: nsk.jvmti.unit.extmech
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* Method: isClassUnloadingEnabled
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* Signature: ()Z
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*/
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JNIEXPORT jboolean JNICALL
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Java_nsk_jvmti_unit_extmech_isClassUnloadingEnabled
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(JNIEnv *env, jclass cls)
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{
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jint count, i;
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jvmtiExtensionFunctionInfo* ext_funcs;
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jvmtiError err;
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err = (*jvmti)->GetExtensionFunctions(jvmti, &count, &ext_funcs);
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if (err != JVMTI_ERROR_NONE) {
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fprintf(stderr, "GetExtensionFunctions failed: %d\n", err);
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result = STATUS_FAILED;
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return JNI_FALSE;
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}
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for (i=0; i<count; i++) {
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if (strcmp(ext_funcs[i].id, (char*)"com.sun.hotspot.functions.IsClassUnloadingEnabled") == 0) {
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jboolean enabled;
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err = (*ext_funcs[i].func)(jvmti, &enabled);
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if (err != JVMTI_ERROR_NONE) {
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fprintf(stderr, "IsClassUnloadingEnabled failed: %d\n", err);
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result = STATUS_FAILED;
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return JNI_FALSE;
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} else {
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return enabled;
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}
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}
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}
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return JNI_FALSE;
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}
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static void JNICALL
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ClassUnload(jvmtiEnv jvmti_env, JNIEnv *jni_env, jthread thread, jclass cls) {
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}
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/*
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* Class: nsk.jvmti.unit.extmech
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* Method: enableClassUnloadEvent
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* Signature: (Z)V
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*/
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_unit_extmech_enableClassUnloadEvent
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(JNIEnv *env, jclass cls, jboolean enable)
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{
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jint count, i;
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jvmtiExtensionEventInfo* ext_events;
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jvmtiError err;
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err = (*jvmti)->GetExtensionEvents(jvmti, &count, &ext_events);
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if (err != JVMTI_ERROR_NONE) {
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fprintf(stderr, "GetExtensionEvents failed: %d\n", err);
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result = STATUS_FAILED;
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return;
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}
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for (i=0; i<count; i++) {
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if (strcmp(ext_events[i].id, (char*)"com.sun.hotspot.events.ClassUnload") == 0) {
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err = (*jvmti)->SetExtensionEventCallback(jvmti, ext_events[i].extension_event_index,
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enable ? (jvmtiExtensionEvent)ClassUnload : NULL);
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if (err != JVMTI_ERROR_NONE) {
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fprintf(stderr, "SetExtenionEventCallback failed: %d\n", err);
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result = STATUS_FAILED;
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} else {
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char* id = ext_events[i].id;
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if (enable) {
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fprintf(stderr, "%s callback enabled\n", id);
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} else {
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fprintf(stderr, "%s callback disabled\n", id);
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}
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}
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return;
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}
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}
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}
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/*
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* Class: nsk.jvmti.unit.extmech
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* Method: dumpExtensions
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_unit_extmech_dumpExtensions
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(JNIEnv *env, jclass cls)
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{
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jint count, i, j;
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jvmtiExtensionFunctionInfo* ext_funcs;
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jvmtiExtensionEventInfo* ext_events;
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jvmtiError err;
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err = (*jvmti)->GetExtensionFunctions(jvmti, &count, &ext_funcs);
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if (err != JVMTI_ERROR_NONE) {
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fprintf(stderr, "GetExtensionFunctions failed: %d\n", err);
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result = STATUS_FAILED;
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return;
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}
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fprintf(stderr, "Extension functions:\n");
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for (i=0; i<count; i++) {
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jvmtiParamInfo* params = ext_funcs[i].params;
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jvmtiError* errors = ext_funcs[i].errors;
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fprintf(stderr, "%s (%s)\n", ext_funcs[i].id, ext_funcs[i].short_description);
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fprintf(stderr, " Parameters:\n");
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for (j=0; j<ext_funcs[i].param_count; j++) {
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fprintf(stderr, " %s type:%d\n", params[j].name, params[j].base_type);
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}
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fprintf(stderr, " Errors:\n");
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for (j=0; j<ext_funcs[i].error_count; j++) {
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fprintf(stderr, " %d\n", errors[j]);
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}
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}
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/* --- */
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err = (*jvmti)->GetExtensionEvents(jvmti, &count, &ext_events);
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if (err != JVMTI_ERROR_NONE) {
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fprintf(stderr, "GetExtensionEvents failed: %d\n", err);
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result = STATUS_FAILED;
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return;
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}
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fprintf(stderr, "Extension events:\n");
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for (i=0; i<count; i++) {
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jvmtiParamInfo* params = ext_events[i].params;
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fprintf(stderr, "event: %d, %s (%s)\n",
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ext_events[i].extension_event_index,
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ext_events[i].id, ext_events[i].short_description);
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fprintf(stderr, " Parameters:\n");
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for (j=0; j<ext_events[i].param_count; j++) {
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fprintf(stderr, " %s type:%d\n", params[j].name, params[j].base_type);
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}
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}
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}
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/*
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* Class: nsk.jvmti.unit.extmech
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* Method: getResult
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* Signature: ()I
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*/
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_unit_extmech_getResult
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(JNIEnv *env, jclass cls)
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{
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return result;
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}
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/*
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* JVM_OnLoad - add capabilities and enables OBJECT_FREE event
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*/
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_extmech(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_extmech(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_extmech(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 *vm, char *options, void *reserved)
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{
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jint rc;
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/* get JVMTI environment */
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rc = (*vm)->GetEnv(vm, (void **)&jvmti, JVMTI_VERSION_1_1);
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if (rc != JNI_OK) {
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fprintf(stderr, "Unable to create jvmtiEnv, GetEnv failed, error=%d\n", rc);
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return JNI_ERR;
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}
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return JNI_OK;
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}
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