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 /* event counts */
41 static int MonitorContendedEnterEventsCount = 0;
42 static int MonitorContendedEnteredEventsCount = 0;
43 static int MonitorWaitEventsCount = 0;
44 static int MonitorWaitedEventsCount = 0;
45
46 /* ========================================================================== */
47
48 /** callback functions **/
49
50 static void JNICALL
51 MonitorContendedEnter(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
52 jthread thread, jobject object) {
53 jvmtiThreadInfo info;
54
55 MonitorContendedEnterEventsCount++;
56
57 /* get thread information */
58 if (!NSK_JVMTI_VERIFY(jvmti_env->GetThreadInfo(thread, &info))) {
59 nsk_jvmti_setFailStatus();
60 return;
61 }
62 NSK_DISPLAY2("MonitorContendedEnter event: thread=\"%s\", object=0x%p\n",
63 info.name, object);
64 }
65
66 static void JNICALL
67 MonitorContendedEntered(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
68 jthread thread, jobject object) {
69 jvmtiThreadInfo info;
70
71 MonitorContendedEnteredEventsCount++;
72
73 /* get thread information */
74 if (!NSK_JVMTI_VERIFY(jvmti_env->GetThreadInfo(thread, &info))) {
75 nsk_jvmti_setFailStatus();
76 return;
77 }
78 NSK_DISPLAY2("MonitorContendedEntered event: thread=\"%s\", object=0x%p\n",
79 info.name, object);
80 }
81
82 static void JNICALL
83 MonitorWait(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
84 jthread thread, jobject object, jlong timeout) {
85 jvmtiThreadInfo info;
86
87 MonitorWaitEventsCount++;
88
89 /* get thread information */
90 if (!NSK_JVMTI_VERIFY(jvmti_env->GetThreadInfo(thread, &info))) {
91 nsk_jvmti_setFailStatus();
92 return;
93 }
94 NSK_DISPLAY2("MonitorWait event: thread=\"%s\", object=0x%p\n",
95 info.name, object);
96 }
97
98 static void JNICALL
99 MonitorWaited(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
100 jthread thread, jobject object, jboolean timed_out) {
101 jvmtiThreadInfo info;
102
103 MonitorWaitedEventsCount++;
104
105 /* get thread information */
106 if (!NSK_JVMTI_VERIFY(jvmti_env->GetThreadInfo(thread, &info))) {
107 nsk_jvmti_setFailStatus();
108 return;
109 }
110 NSK_DISPLAY2("MonitorWaited event: thread=\"%s\", object=0x%p\n",
111 info.name, object);
112 }
113
114 /* ========================================================================== */
115
116 /** Agent algorithm. */
117 static void JNICALL
118 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
119
120 if (!nsk_jvmti_waitForSync(timeout))
121 return;
122
123 /* resume debugee and wait for sync */
124 if (!nsk_jvmti_resumeSync())
125 return;
126 if (!nsk_jvmti_waitForSync(timeout))
127 return;
128
129 NSK_DISPLAY1("MonitorContendedEnter events received: %d\n",
130 MonitorContendedEnterEventsCount);
131 if (!NSK_VERIFY(MonitorContendedEnterEventsCount == 0))
132 nsk_jvmti_setFailStatus();
133
134 NSK_DISPLAY1("MonitorContendedEntered events received: %d\n",
135 MonitorContendedEnteredEventsCount);
136 if (!NSK_VERIFY(MonitorContendedEnteredEventsCount == 0))
137 nsk_jvmti_setFailStatus();
138
139 NSK_DISPLAY1("MonitorWait events received: %d\n",
140 MonitorWaitEventsCount);
141 if (!NSK_VERIFY(MonitorWaitEventsCount == 0))
142 nsk_jvmti_setFailStatus();
143
144 NSK_DISPLAY1("MonitorWaited events received: %d\n",
145 MonitorWaitedEventsCount);
146 if (!NSK_VERIFY(MonitorWaitedEventsCount == 0))
147 nsk_jvmti_setFailStatus();
148
149 if (!nsk_jvmti_resumeSync())
150 return;
151 }
152
153 /* ========================================================================== */
154
155 /** Agent library initialization. */
156 #ifdef STATIC_BUILD
157 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t008a(JavaVM *jvm, char *options, void *reserved) {
158 return Agent_Initialize(jvm, options, reserved);
159 }
160 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t008a(JavaVM *jvm, char *options, void *reserved) {
161 return Agent_Initialize(jvm, options, reserved);
162 }
163 JNIEXPORT jint JNI_OnLoad_ma10t008a(JavaVM *jvm, char *options, void *reserved) {
164 return JNI_VERSION_1_8;
165 }
166 #endif
167 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
168 jvmtiEnv* jvmti = NULL;
169 jvmtiCapabilities caps;
170 jvmtiEventCallbacks callbacks;
171
172 NSK_DISPLAY0("Agent_OnLoad\n");
173
174 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
175 return JNI_ERR;
176
177 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
178
179 if (!NSK_VERIFY((jvmti =
180 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
181 return JNI_ERR;
182
183 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
184 return JNI_ERR;
185
186 memset(&caps, 0, sizeof(caps));
187 caps.can_generate_monitor_events = 1;
188 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) {
189 return JNI_ERR;
190 }
191
192 memset(&callbacks, 0, sizeof(callbacks));
193 callbacks.MonitorContendedEnter = &MonitorContendedEnter;
194 callbacks.MonitorContendedEntered = &MonitorContendedEntered;
195 callbacks.MonitorWait = &MonitorWait;
196 callbacks.MonitorWaited = &MonitorWaited;
197 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
198 return JNI_ERR;
199
200 return JNI_OK;
201 }
202
203 /* ========================================================================== */
204
205 }