1 /*
   2  * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include <string.h>
  25 #include "jvmti.h"
  26 #include "agent_common.h"
  27 #include "jni_tools.h"
  28 #include "jvmti_tools.h"
  29 #include "JVMTITools.h"
  30 
  31 extern "C" {
  32 
  33 /* ============================================================================= */
  34 
  35 /* scaffold objects */
  36 static jvmtiEnv *jvmti = NULL;
  37 static jlong timeout = 0;
  38 
  39 static int eventCount = 0;
  40 
  41 /* ============================================================================= */
  42 
  43 JNIEXPORT void JNICALL
  44 cbThreadEnd(jvmtiEnv* jvmti, JNIEnv* jni_env, jthread thread) {
  45 
  46     eventCount++;
  47 }
  48 
  49 /* ============================================================================= */
  50 
  51 static int
  52 enableEvent(jvmtiEventMode enable, jvmtiEvent event) {
  53 
  54     if (enable == JVMTI_ENABLE) {
  55         NSK_DISPLAY1("enabling %s\n", TranslateEvent(event));
  56     } else {
  57         NSK_DISPLAY1("disabling %s\n", TranslateEvent(event));
  58     }
  59 
  60     if (!NSK_JVMTI_VERIFY(
  61             NSK_CPP_STUB4(SetEventNotificationMode, jvmti, enable,
  62                                             event, NULL))) {
  63         nsk_jvmti_setFailStatus();
  64         return NSK_FALSE;
  65     }
  66 
  67     return NSK_TRUE;
  68 }
  69 
  70 /* ============================================================================= */
  71 
  72 int checkEvents() {
  73 
  74     int result = NSK_TRUE;
  75 
  76     if (eventCount == 0) {
  77         nsk_jvmti_setFailStatus();
  78         NSK_COMPLAIN0("Number of THREAD_END events must be greater than 0\n");
  79         nsk_jvmti_setFailStatus();
  80         result = NSK_FALSE;
  81     }
  82 
  83     return result;
  84 }
  85 
  86 /* ============================================================================= */
  87 
  88 static int
  89 setCallBacks() {
  90     jvmtiEventCallbacks eventCallbacks;
  91     memset(&eventCallbacks, 0, sizeof(eventCallbacks));
  92 
  93     eventCallbacks.ThreadEnd = cbThreadEnd;
  94 
  95     if (!NSK_JVMTI_VERIFY(
  96             NSK_CPP_STUB3(SetEventCallbacks, jvmti,
  97                                 &eventCallbacks,
  98                                 sizeof(eventCallbacks))))
  99         return NSK_FALSE;
 100 
 101     return NSK_TRUE;
 102 }
 103 
 104 /* ============================================================================= */
 105 
 106 /** Agent algorithm. */
 107 static void JNICALL
 108 agentProc(jvmtiEnv* jvmti, JNIEnv* agentJNI, void* arg) {
 109 
 110     NSK_DISPLAY0("Wait for debuggee to become ready\n");
 111     if (!nsk_jvmti_waitForSync(timeout))
 112         return;
 113 
 114     NSK_DISPLAY0("Let debuggee to continue\n");
 115     if (!nsk_jvmti_resumeSync())
 116         return;
 117 
 118     if (!nsk_jvmti_waitForSync(timeout))
 119         return;
 120 
 121     if (!checkEvents()) {
 122         nsk_jvmti_setFailStatus();
 123     }
 124 
 125     NSK_DISPLAY0("Let debuggee to finish\n");
 126     if (!nsk_jvmti_resumeSync())
 127         return;
 128 
 129 }
 130 
 131 /* ============================================================================= */
 132 
 133 /** Agent library initialization. */
 134 #ifdef STATIC_BUILD
 135 JNIEXPORT jint JNICALL Agent_OnLoad_threadend002(JavaVM *jvm, char *options, void *reserved) {
 136     return Agent_Initialize(jvm, options, reserved);
 137 }
 138 JNIEXPORT jint JNICALL Agent_OnAttach_threadend002(JavaVM *jvm, char *options, void *reserved) {
 139     return Agent_Initialize(jvm, options, reserved);
 140 }
 141 JNIEXPORT jint JNI_OnLoad_threadend002(JavaVM *jvm, char *options, void *reserved) {
 142     return JNI_VERSION_1_8;
 143 }
 144 #endif
 145 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
 146 
 147     if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
 148         return JNI_ERR;
 149 
 150     timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
 151 
 152     if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
 153         return JNI_ERR;
 154 
 155     if (!setCallBacks()) {
 156         return JNI_ERR;
 157     }
 158 
 159     if (!enableEvent(JVMTI_ENABLE, JVMTI_EVENT_THREAD_END)) {
 160         NSK_COMPLAIN0("Events could not be enabled");
 161         nsk_jvmti_setFailStatus();
 162         return JNI_ERR;
 163     }
 164 
 165     if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
 166         return JNI_ERR;
 167 
 168     return JNI_OK;
 169 }
 170 
 171 }