| /* |
| * Copyright (c) 2004, 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 "JVMTITools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* ============================================================================= */ |
| |
| /* scaffold objects */ |
| static JNIEnv* jni = NULL; |
| static jvmtiEnv *jvmti = NULL; |
| static jlong timeout = 0; |
| static jrawMonitorID syncLock = NULL; |
| |
| /* constant names */ |
| #define JVMTI_EVENT_COUNT (int)(JVMTI_MAX_EVENT_TYPE_VAL - JVMTI_MIN_EVENT_TYPE_VAL + 1) |
| #define EXPECTED_CLASS_NAME "nsk.jvmti.scenarios.events.EM06.em06t001a" |
| #define CLASS_LOADER_COUNT_PARAM "classLoaderCount" |
| |
| static int classLoaderCount = 0; |
| static int classloadEventCount = 0; |
| static int classprepareEventCount = 0; |
| |
| /* ============================================================================= */ |
| |
| /* callbacks */ |
| |
| void |
| handler(jvmtiEvent event, jvmtiEnv* jvmti, JNIEnv* jni_env, |
| jthread thread, jclass klass) { |
| |
| jmethodID methodID; |
| jclass classObject; |
| jstring jclassName; |
| const char *className; |
| |
| if (!NSK_JNI_VERIFY(jni_env, (classObject = |
| NSK_CPP_STUB2(GetObjectClass, jni_env, klass)) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| if (!NSK_JNI_VERIFY(jni_env, (methodID = |
| NSK_CPP_STUB4(GetMethodID, jni_env, classObject, |
| "getName", "()Ljava/lang/String;")) != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| jclassName = NSK_CPP_STUB3(CallObjectMethod, jni_env, klass, |
| methodID); |
| |
| className = NSK_CPP_STUB3(GetStringUTFChars, jni_env, jclassName, 0); |
| |
| if ( className != NULL && (strcmp(className, EXPECTED_CLASS_NAME)==0) ) { |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter, jvmti, syncLock))) |
| nsk_jvmti_setFailStatus(); |
| |
| switch (event) { |
| case JVMTI_EVENT_CLASS_LOAD: |
| classloadEventCount++; break; |
| case JVMTI_EVENT_CLASS_PREPARE: |
| classprepareEventCount++; break; |
| default: |
| NSK_COMPLAIN1("Unexpected event %s", TranslateEvent(event)); |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit, jvmti, syncLock))) |
| nsk_jvmti_setFailStatus(); |
| |
| } |
| |
| NSK_CPP_STUB3(ReleaseStringUTFChars, jni_env, jclassName, className); |
| } |
| |
| JNIEXPORT void JNICALL |
| cbClassLoad(jvmtiEnv* jvmti, JNIEnv* jni_env, jthread thread, jclass klass) { |
| |
| handler(JVMTI_EVENT_CLASS_LOAD, jvmti, jni_env, thread, klass); |
| } |
| |
| JNIEXPORT void JNICALL |
| cbClassPrepare(jvmtiEnv* jvmti, JNIEnv* jni_env, jthread thread, jclass klass) { |
| |
| handler(JVMTI_EVENT_CLASS_PREPARE, jvmti, jni_env, thread, klass); |
| } |
| |
| /* ============================================================================= */ |
| |
| static int |
| enableEvent(jvmtiEventMode enable, jvmtiEvent event) { |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB4(SetEventNotificationMode, jvmti, enable, |
| event, NULL))) { |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } |
| |
| return NSK_TRUE; |
| } |
| |
| /* ============================================================================= */ |
| |
| /** |
| * Testcase: check tested events. |
| * - check if expected events received for each method |
| * |
| * Returns NSK_TRUE if test may continue; or NSK_FALSE for test break. |
| */ |
| int checkEvents() { |
| |
| int result = NSK_TRUE; |
| |
| if (classloadEventCount == classLoaderCount) { |
| NSK_DISPLAY1("Expected number of JVMTI_EVENT_CLASS_LOAD events %d\n", |
| classloadEventCount); |
| } else { |
| NSK_COMPLAIN2("Unexpected number of JVMTI_EVENT_CLASS_LOAD events %d\n\texpected value %d\n", |
| classloadEventCount, |
| classLoaderCount); |
| result = NSK_FALSE; |
| } |
| |
| if (classprepareEventCount == classLoaderCount) { |
| NSK_DISPLAY1("Expected number of JVMTI_EVENT_CLASS_PREPARE events %d\n", |
| classloadEventCount); |
| } else { |
| NSK_COMPLAIN2("Unexpected number of JVMTI_EVENT_CLASS_PREPARE events %d\n\texpected value %d\n", |
| classprepareEventCount, |
| classLoaderCount); |
| result = NSK_FALSE; |
| } |
| |
| return result; |
| } |
| |
| /* ============================================================================= */ |
| |
| static int |
| setCallBacks() { |
| jvmtiEventCallbacks eventCallbacks; |
| memset(&eventCallbacks, 0, sizeof(eventCallbacks)); |
| |
| eventCallbacks.ClassLoad = cbClassLoad; |
| eventCallbacks.ClassPrepare = cbClassPrepare; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(SetEventCallbacks, jvmti, |
| &eventCallbacks, |
| sizeof(eventCallbacks)))) |
| return NSK_FALSE; |
| |
| return NSK_TRUE; |
| } |
| |
| /* ============================================================================= */ |
| |
| /** Agent algorithm. */ |
| static void JNICALL |
| agentProc(jvmtiEnv* jvmti, JNIEnv* agentJNI, void* arg) { |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(CreateRawMonitor, jvmti, "_syncLock", &syncLock))) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| jni = agentJNI; |
| |
| NSK_DISPLAY0("Wait for debuggee to become ready\n"); |
| if (!nsk_jvmti_waitForSync(timeout)) |
| return; |
| |
| if (!setCallBacks()) { |
| return; |
| } |
| |
| if (!enableEvent(JVMTI_ENABLE, JVMTI_EVENT_CLASS_LOAD) |
| || !enableEvent(JVMTI_ENABLE, JVMTI_EVENT_CLASS_PREPARE)) { |
| NSK_COMPLAIN0("Events could not be enabled"); |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| NSK_DISPLAY0("Let debuggee to load class\n"); |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| |
| if (!nsk_jvmti_waitForSync(timeout)) |
| return; |
| |
| if (!checkEvents()) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| if (!enableEvent(JVMTI_DISABLE, JVMTI_EVENT_CLASS_LOAD) |
| || !enableEvent(JVMTI_DISABLE, JVMTI_EVENT_CLASS_PREPARE)) { |
| NSK_COMPLAIN0("Events could not be disabled"); |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY0("Let debuggee to finish\n"); |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(DestroyRawMonitor, jvmti, syncLock))) |
| nsk_jvmti_setFailStatus(); |
| |
| } |
| |
| /* ============================================================================= */ |
| |
| /** Agent library initialization. */ |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_em06t001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_em06t001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_em06t001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| |
| if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) |
| return JNI_ERR; |
| |
| timeout = nsk_jvmti_getWaitTime() * 60 * 1000; |
| classLoaderCount = nsk_jvmti_findOptionIntValue(CLASS_LOADER_COUNT_PARAM, 100); |
| |
| if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) |
| return JNI_ERR; |
| |
| if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) |
| return JNI_ERR; |
| |
| return JNI_OK; |
| } |
| |
| /* ============================================================================= */ |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
