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(NSK_CPP_STUB3(GetThreadInfo, jvmti_env,
59 thread, &info))) {
60 nsk_jvmti_setFailStatus();
61 return;
62 }
63 NSK_DISPLAY2("MonitorContendedEnter event: thread=\"%s\", object=0x%p\n",
64 info.name, object);
65 }
66
67 static void JNICALL
68 MonitorContendedEntered(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
69 jthread thread, jobject object) {
70 jvmtiThreadInfo info;
71
72 MonitorContendedEnteredEventsCount++;
73
74 /* get thread information */
75 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env,
76 thread, &info))) {
77 nsk_jvmti_setFailStatus();
78 return;
79 }
80 NSK_DISPLAY2("MonitorContendedEntered event: thread=\"%s\", object=0x%p\n",
81 info.name, object);
82 }
83
84 static void JNICALL
85 MonitorWait(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
86 jthread thread, jobject object, jlong timeout) {
87 jvmtiThreadInfo info;
88
89 MonitorWaitEventsCount++;
90
91 /* get thread information */
92 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env,
93 thread, &info))) {
94 nsk_jvmti_setFailStatus();
95 return;
96 }
97 NSK_DISPLAY2("MonitorWait event: thread=\"%s\", object=0x%p\n",
98 info.name, object);
99 }
100
101 static void JNICALL
102 MonitorWaited(jvmtiEnv *jvmti_env, JNIEnv* jni_env,
103 jthread thread, jobject object, jboolean timed_out) {
104 jvmtiThreadInfo info;
105
106 MonitorWaitedEventsCount++;
107
108 /* get thread information */
109 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env,
110 thread, &info))) {
111 nsk_jvmti_setFailStatus();
112 return;
113 }
114 NSK_DISPLAY2("MonitorWaited event: thread=\"%s\", object=0x%p\n",
115 info.name, object);
116 }
117
118 /* ========================================================================== */
119
120 /** Agent algorithm. */
121 static void JNICALL
122 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
123
124 if (!nsk_jvmti_waitForSync(timeout))
125 return;
126
127 /* resume debugee and wait for sync */
128 if (!nsk_jvmti_resumeSync())
129 return;
130 if (!nsk_jvmti_waitForSync(timeout))
131 return;
132
133 NSK_DISPLAY1("MonitorContendedEnter events received: %d\n",
134 MonitorContendedEnterEventsCount);
135 if (!NSK_VERIFY(MonitorContendedEnterEventsCount != 0))
136 nsk_jvmti_setFailStatus();
137
138 NSK_DISPLAY1("MonitorContendedEntered events received: %d\n",
139 MonitorContendedEnteredEventsCount);
140 if (!NSK_VERIFY(MonitorContendedEnteredEventsCount != 0))
141 nsk_jvmti_setFailStatus();
142
143 NSK_DISPLAY1("MonitorWait events received: %d\n",
144 MonitorWaitEventsCount);
145 if (!NSK_VERIFY(MonitorWaitEventsCount != 0))
146 nsk_jvmti_setFailStatus();
147
148 NSK_DISPLAY1("MonitorWaited events received: %d\n",
149 MonitorWaitedEventsCount);
150 if (!NSK_VERIFY(MonitorWaitedEventsCount != 0))
151 nsk_jvmti_setFailStatus();
152
153 if (!nsk_jvmti_resumeSync())
154 return;
155 }
156
157 /* ========================================================================== */
158
159 /** Agent library initialization. */
160 #ifdef STATIC_BUILD
161 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t008(JavaVM *jvm, char *options, void *reserved) {
162 return Agent_Initialize(jvm, options, reserved);
163 }
164 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t008(JavaVM *jvm, char *options, void *reserved) {
165 return Agent_Initialize(jvm, options, reserved);
166 }
167 JNIEXPORT jint JNI_OnLoad_ma10t008(JavaVM *jvm, char *options, void *reserved) {
168 return JNI_VERSION_1_8;
169 }
170 #endif
171 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
172 jvmtiEnv* jvmti = NULL;
173 jvmtiCapabilities caps;
174 jvmtiEventCallbacks callbacks;
175
176 NSK_DISPLAY0("Agent_OnLoad\n");
177
178 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
179 return JNI_ERR;
180
181 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
182
183 if (!NSK_VERIFY((jvmti =
184 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
185 return JNI_ERR;
186
187 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
188 return JNI_ERR;
189
190 memset(&caps, 0, sizeof(caps));
191 caps.can_generate_monitor_events = 1;
192 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
193 return JNI_ERR;
194 }
195
196 memset(&callbacks, 0, sizeof(callbacks));
197 callbacks.MonitorContendedEnter = &MonitorContendedEnter;
198 callbacks.MonitorContendedEntered = &MonitorContendedEntered;
199 callbacks.MonitorWait = &MonitorWait;
200 callbacks.MonitorWaited = &MonitorWaited;
201 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
202 return JNI_ERR;
203
204 /* enable events */
205 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
206 jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_CONTENDED_ENTER, NULL)))
207 return JNI_ERR;
208 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
209 jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, NULL)))
210 return JNI_ERR;
211 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
212 jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_WAIT, NULL)))
213 return JNI_ERR;
214 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
215 jvmti, JVMTI_ENABLE, JVMTI_EVENT_MONITOR_WAITED, NULL)))
216 return JNI_ERR;
217
218 return JNI_OK;
219 }
220
221 /* ========================================================================== */
222
223 }