| /* |
| * Copyright (c) 2003, 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 <stdio.h> |
| #include <string.h> |
| #include "jvmti.h" |
| #include "agent_common.h" |
| |
| #define PASSED 0 |
| #define STATUS_FAILED 2 |
| |
| static jvmtiEnv *jvmti; |
| static jint result = PASSED; |
| |
| /* |
| * Class: nsk.jvmti.unit.extmech |
| * Method: isClassUnloadingEnabled |
| * Signature: ()Z |
| */ |
| JNIEXPORT jboolean JNICALL |
| Java_nsk_jvmti_unit_extmech_isClassUnloadingEnabled |
| (JNIEnv *env, jclass cls) |
| { |
| jint count, i; |
| jvmtiExtensionFunctionInfo* ext_funcs; |
| jvmtiError err; |
| |
| err = (*jvmti)->GetExtensionFunctions(jvmti, &count, &ext_funcs); |
| if (err != JVMTI_ERROR_NONE) { |
| fprintf(stderr, "GetExtensionFunctions failed: %d\n", err); |
| result = STATUS_FAILED; |
| return JNI_FALSE; |
| } |
| |
| for (i=0; i<count; i++) { |
| if (strcmp(ext_funcs[i].id, (char*)"com.sun.hotspot.functions.IsClassUnloadingEnabled") == 0) { |
| jboolean enabled; |
| err = (*ext_funcs[i].func)(jvmti, &enabled); |
| |
| if (err != JVMTI_ERROR_NONE) { |
| fprintf(stderr, "IsClassUnloadingEnabled failed: %d\n", err); |
| result = STATUS_FAILED; |
| return JNI_FALSE; |
| } else { |
| return enabled; |
| } |
| } |
| } |
| |
| return JNI_FALSE; |
| } |
| |
| static void JNICALL |
| ClassUnload(jvmtiEnv* jvmti_env, JNIEnv *jni_env, jthread thread, jclass cls) { |
| } |
| |
| /* |
| * Class: nsk.jvmti.unit.extmech |
| * Method: enableClassUnloadEvent |
| * Signature: (Z)V |
| */ |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_unit_extmech_enableClassUnloadEvent |
| (JNIEnv *env, jclass cls, jboolean enable) |
| { |
| jint count, i; |
| jvmtiExtensionEventInfo* ext_events; |
| jvmtiError err; |
| |
| err = (*jvmti)->GetExtensionEvents(jvmti, &count, &ext_events); |
| if (err != JVMTI_ERROR_NONE) { |
| fprintf(stderr, "GetExtensionEvents failed: %d\n", err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| for (i=0; i<count; i++) { |
| if (strcmp(ext_events[i].id, (char*)"com.sun.hotspot.events.ClassUnload") == 0) { |
| |
| err = (*jvmti)->SetExtensionEventCallback(jvmti, ext_events[i].extension_event_index, |
| enable ? (jvmtiExtensionEvent)ClassUnload : NULL); |
| |
| if (err != JVMTI_ERROR_NONE) { |
| fprintf(stderr, "SetExtenionEventCallback failed: %d\n", err); |
| result = STATUS_FAILED; |
| } else { |
| char* id = ext_events[i].id; |
| if (enable) { |
| fprintf(stderr, "%s callback enabled\n", id); |
| } else { |
| fprintf(stderr, "%s callback disabled\n", id); |
| } |
| } |
| return; |
| } |
| } |
| } |
| |
| /* |
| * Class: nsk.jvmti.unit.extmech |
| * Method: dumpExtensions |
| * Signature: ()V |
| */ |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_unit_extmech_dumpExtensions |
| (JNIEnv *env, jclass cls) |
| { |
| jint count, i, j; |
| jvmtiExtensionFunctionInfo* ext_funcs; |
| jvmtiExtensionEventInfo* ext_events; |
| jvmtiError err; |
| |
| err = (*jvmti)->GetExtensionFunctions(jvmti, &count, &ext_funcs); |
| if (err != JVMTI_ERROR_NONE) { |
| fprintf(stderr, "GetExtensionFunctions failed: %d\n", err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| fprintf(stderr, "Extension functions:\n"); |
| for (i=0; i<count; i++) { |
| jvmtiParamInfo* params = ext_funcs[i].params; |
| jvmtiError* errors = ext_funcs[i].errors; |
| |
| fprintf(stderr, "%s (%s)\n", ext_funcs[i].id, ext_funcs[i].short_description); |
| |
| fprintf(stderr, " Parameters:\n"); |
| |
| for (j=0; j<ext_funcs[i].param_count; j++) { |
| fprintf(stderr, " %s type:%d\n", params[j].name, params[j].base_type); |
| } |
| |
| fprintf(stderr, " Errors:\n"); |
| for (j=0; j<ext_funcs[i].error_count; j++) { |
| fprintf(stderr, " %d\n", errors[j]); |
| } |
| } |
| |
| /* --- */ |
| |
| err = (*jvmti)->GetExtensionEvents(jvmti, &count, &ext_events); |
| if (err != JVMTI_ERROR_NONE) { |
| fprintf(stderr, "GetExtensionEvents failed: %d\n", err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| fprintf(stderr, "Extension events:\n"); |
| for (i=0; i<count; i++) { |
| jvmtiParamInfo* params = ext_events[i].params; |
| |
| fprintf(stderr, "event: %d, %s (%s)\n", |
| ext_events[i].extension_event_index, |
| ext_events[i].id, ext_events[i].short_description); |
| |
| fprintf(stderr, " Parameters:\n"); |
| |
| for (j=0; j<ext_events[i].param_count; j++) { |
| fprintf(stderr, " %s type:%d\n", params[j].name, params[j].base_type); |
| } |
| |
| } |
| } |
| |
| /* |
| * Class: nsk.jvmti.unit.extmech |
| * Method: getResult |
| * Signature: ()I |
| */ |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_unit_extmech_getResult |
| (JNIEnv *env, jclass cls) |
| { |
| return result; |
| } |
| |
| /* |
| * JVM_OnLoad - add capabilities and enables OBJECT_FREE event |
| */ |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_extmech(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_extmech(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_extmech(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) |
| { |
| jint rc; |
| |
| /* get JVMTI environment */ |
| |
| rc = (*vm)->GetEnv(vm, (void **)&jvmti, JVMTI_VERSION_1_1); |
| if (rc != JNI_OK) { |
| fprintf(stderr, "Unable to create jvmtiEnv, GetEnv failed, error=%d\n", rc); |
| return JNI_ERR; |
| } |
| |
| return JNI_OK; |
| } |