1 /*
2 * Copyright (c) 2003, 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 <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <jvmti.h>
28 #include "agent_common.h"
29
30 #include "nsk_tools.h"
31 #include "JVMTITools.h"
32 #include "jvmti_tools.h"
33
34 extern "C" {
35
36 #define STATUS_FAILED 2
37 #define PASSED 0
38
39 static volatile jint result = PASSED;
40 static volatile int gcstart = 0;
41 static volatile int gcfinish = 0;
42 static jvmtiEnv *jvmti = NULL;
43 static jvmtiEventCallbacks callbacks;
44 static jvmtiCapabilities caps;
45
46 /** callback functions **/
47 void JNICALL
48 GarbageCollectionStart(jvmtiEnv *jvmti_env) {
49 gcstart++;
50 NSK_DISPLAY1("GarbageCollectionStart event #%d received\n",
51 gcstart);
52
53 if (gcstart != (gcfinish+1)) {
54 result = STATUS_FAILED;
55 NSK_COMPLAIN2(
56 "TEST FAILED: GarbageCollectionStart event has no a matched pair GarbageCollectionFinish:\n"
57 "\t%d GarbageCollectionStart events\t%d GarbageCollectionFinish events\n\n",
58 gcstart, gcfinish);
59 }
60 else
61 NSK_DISPLAY0("CHECK PASSED: GarbageCollectionStart event has a matched pair GarbageCollectionFinish as expected\n\n");
62 }
63
64 void JNICALL
65 GarbageCollectionFinish(jvmtiEnv *jvmti_env) {
66 gcfinish++;
67 NSK_DISPLAY1("GarbageCollectionFinish event #%d received\n",
68 gcfinish);
69
70 if (gcstart != gcfinish) {
71 result = STATUS_FAILED;
72 NSK_COMPLAIN2(
73 "TEST FAILED: GarbageCollectionFinish event has no a matched pair GarbageCollectionStart:\n"
74 "\t%d GarbageCollectionStart events\t%d GarbageCollectionFinish events\n\n",
75 gcstart, gcfinish);
76 }
77 else
78 NSK_DISPLAY0("CHECK PASSED: GarbageCollectionFinish event has a matched pair GarbageCollectionStart as expected\n\n");
79 }
80
81 void JNICALL
82 VMDeath(jvmtiEnv *jvmti_env, JNIEnv *env) {
83 NSK_DISPLAY0("VMDeath event received\n");
84
85 if (gcstart != gcfinish || result == STATUS_FAILED) {
86 NSK_COMPLAIN2(
87 "TEST FAILED: some GarbageCollectionFinish events have no a matched pair GarbageCollectionStart:\n"
88 "\t%d GarbageCollectionStart events\t%d GarbageCollectionFinish events\n\n",
89 gcstart, gcfinish);
90
91 exit(95 + STATUS_FAILED);
92 }
93 else
94 NSK_DISPLAY0("CHECK PASSED: all GarbageCollectionStart/GarbageCollectionFinish events have a matched pair as expected\n\n");
95 }
96
97 /************************/
98
99 #ifdef STATIC_BUILD
100 JNIEXPORT jint JNICALL Agent_OnLoad_gcstart001(JavaVM *jvm, char *options, void *reserved) {
101 return Agent_Initialize(jvm, options, reserved);
102 }
103 JNIEXPORT jint JNICALL Agent_OnAttach_gcstart001(JavaVM *jvm, char *options, void *reserved) {
104 return Agent_Initialize(jvm, options, reserved);
105 }
106 JNIEXPORT jint JNI_OnLoad_gcstart001(JavaVM *jvm, char *options, void *reserved) {
107 return JNI_VERSION_1_8;
108 }
109 #endif
110 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
111 /* init framework and parse options */
112 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
113 return JNI_ERR;
114
115 /* create JVMTI environment */
116 if (!NSK_VERIFY((jvmti =
117 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
118 return JNI_ERR;
119
120 /* add capability to generate compiled method events */
121 memset(&caps, 0, sizeof(jvmtiCapabilities));
122 caps.can_generate_garbage_collection_events = 1;
123 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
124 return JNI_ERR;
125
126 if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
127 return JNI_ERR;
128
129 if (!caps.can_generate_garbage_collection_events)
130 NSK_DISPLAY0("Warning: generation of garbage collection events is not implemented\n");
131
132 /* set event callback */
133 NSK_DISPLAY0("setting event callbacks ...\n");
134 (void) memset(&callbacks, 0, sizeof(callbacks));
135 callbacks.VMDeath = &VMDeath;
136 callbacks.GarbageCollectionStart = &GarbageCollectionStart;
137 callbacks.GarbageCollectionFinish = &GarbageCollectionFinish;
138 if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
139 return JNI_ERR;
140
141 NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
142 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL)))
143 return JNI_ERR;
144 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_START, NULL)))
145 return JNI_ERR;
146 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, NULL)))
147 return JNI_ERR;
148 NSK_DISPLAY0("enabling the events done\n\n");
149
150 return JNI_OK;
151 }
152
153 }