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 <stdlib.h>
  25 #include <string.h>
  26 #include "jni_tools.h"
  27 #include "agent_common.h"
  28 #include "jvmti_tools.h"
  29 
  30 #define PASSED 0
  31 #define STATUS_FAILED 2
  32 
  33 extern "C" {
  34 
  35 /* ========================================================================== */
  36 
  37 /* scaffold objects */
  38 static jlong timeout = 0;
  39 
  40 /* test objects */
  41 static int VMInitEventsCount = 0;
  42 static int VMInitEventsExpected = 1;
  43 static int VMDeathEventsCount = 0;
  44 static int VMDeathEventsExpected = 1;
  45 
  46 /* ========================================================================== */
  47 
  48 /** callback functions **/
  49 
  50 void JNICALL VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) {
  51     NSK_DISPLAY0("VMInit event\n");
  52     VMInitEventsCount++;
  53 }
  54 
  55 void JNICALL
  56 VMDeath(jvmtiEnv *jvmti_env, JNIEnv *env) {
  57     NSK_DISPLAY0("VMDeath event\n");
  58     VMDeathEventsCount++;
  59 }
  60 
  61 /* ========================================================================== */
  62 
  63 /** Agent algorithm. */
  64 static void JNICALL
  65 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
  66     if (!nsk_jvmti_waitForSync(timeout))
  67         return;
  68 
  69     if (VMInitEventsCount != VMInitEventsExpected) {
  70         NSK_COMPLAIN2("Wrong number of VM init events: %d, expected: %d\n",
  71             VMInitEventsCount, VMInitEventsExpected);
  72         nsk_jvmti_setFailStatus();
  73     }
  74 
  75     if (!nsk_jvmti_resumeSync())
  76         return;
  77 }
  78 
  79 /* ========================================================================== */
  80 
  81 /** Agent library initialization. */
  82 #ifdef STATIC_BUILD
  83 JNIEXPORT jint JNICALL Agent_OnLoad_ma02t001a(JavaVM *jvm, char *options, void *reserved) {
  84     return Agent_Initialize(jvm, options, reserved);
  85 }
  86 JNIEXPORT jint JNICALL Agent_OnAttach_ma02t001a(JavaVM *jvm, char *options, void *reserved) {
  87     return Agent_Initialize(jvm, options, reserved);
  88 }
  89 JNIEXPORT jint JNI_OnLoad_ma02t001a(JavaVM *jvm, char *options, void *reserved) {
  90     return JNI_VERSION_1_8;
  91 }
  92 #endif
  93 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
  94     jvmtiEnv* jvmti = NULL;
  95     jvmtiEventCallbacks callbacks;
  96 
  97     NSK_DISPLAY0("Agent_OnLoad\n");
  98 
  99     if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
 100         return JNI_ERR;
 101 
 102     timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
 103 
 104     if (!NSK_VERIFY((jvmti =
 105             nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
 106         return JNI_ERR;
 107 
 108     if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
 109         return JNI_ERR;
 110 
 111     memset(&callbacks, 0, sizeof(callbacks));
 112     callbacks.VMInit = &VMInit;
 113     callbacks.VMDeath = &VMDeath;
 114     if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
 115         return JNI_ERR;
 116 
 117     if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
 118             jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL)))
 119         return JNI_ERR;
 120 
 121     if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
 122             jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL)))
 123         return JNI_ERR;
 124 
 125     return JNI_OK;
 126 }
 127 
 128 /* ========================================================================== */
 129 
 130 /* agent library shutdown */
 131 JNIEXPORT void JNICALL
 132 #ifdef STATIC_BUILD
 133 Agent_OnUnload_ma02t001a(JavaVM *jvm)
 134 #else
 135 Agent_OnUnload(JavaVM *jvm)
 136 #endif
 137 {
 138     const char* KEY_PHRASE = "Agent_OnUnload() of the 2nd agent";
 139 
 140     fprintf(stdout, "%s\n", KEY_PHRASE);
 141     fflush(stdout);
 142 
 143     if (VMDeathEventsCount != VMDeathEventsExpected) {
 144         NSK_COMPLAIN2("Wrong number of VM death events: %d, expected: %d\n",
 145             VMDeathEventsCount, VMDeathEventsExpected);
 146         exit(97);
 147     }
 148 }
 149 
 150 /* ========================================================================== */
 151 
 152 }