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 <string.h>
25 #include "jvmti.h"
26 #include "agent_common.h"
27 #include "jni_tools.h"
28 #include "jvmti_tools.h"
29
30 extern "C" {
31
32 /* ============================================================================= */
33
34 /* scaffold objects */
35 static jlong timeout = 0;
36
37 /* constan names */
38 #define THREAD_NAME "TestedThread"
39
40 /* constants */
41 #define STORAGE_DATA_SIZE 1024
42 #define STORAGE_DATA_CHAR 'X'
43 #define EVENTS_COUNT 2
44
45 /* events list */
46 static jvmtiEvent eventsList[EVENTS_COUNT] = {
47 JVMTI_EVENT_THREAD_START,
48 JVMTI_EVENT_THREAD_END
49 };
50
51 /* storage structure */
52 typedef struct _StorageStructure {
53 char data[STORAGE_DATA_SIZE];
54 } StorageStructure;
55
56 /* storage data */
57 static StorageStructure storageData;
58 static StorageStructure* initialStorage = &storageData;
59
60 /* events counts */
61 static int eventsStart = 0;
62 static int eventsEnd = 0;
63
64 /* ============================================================================= */
65
66 /** Agent algorithm. */
67 static void JNICALL
68 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
69
70 NSK_DISPLAY0("Wait for thread to create\n");
71 if (!nsk_jvmti_waitForSync(timeout))
72 return;
73
74 /* perform testing */
75 {
76 memset(storageData.data, STORAGE_DATA_CHAR, STORAGE_DATA_SIZE);
77
78 eventsStart = 0;
79 eventsEnd = 0;
80 NSK_DISPLAY1("Enable events: %d events\n", EVENTS_COUNT);
81 if (!nsk_jvmti_enableEvents(JVMTI_ENABLE, EVENTS_COUNT, eventsList, NULL))
82 return;
83
84 NSK_DISPLAY0("Let tested thread to run\n");
85 if (!nsk_jvmti_resumeSync())
86 return;
87
88 NSK_DISPLAY0("Wait for tested thread to finish\n");
89 if (!nsk_jvmti_waitForSync(timeout))
90 return;
91
92 NSK_DISPLAY1("Disable events: %d events\n", EVENTS_COUNT);
93 if (!nsk_jvmti_enableEvents(JVMTI_DISABLE, EVENTS_COUNT, eventsList, NULL))
94 return;
95
96 NSK_DISPLAY1("Check if all expected events received for tested thread: %s\n",
97 THREAD_NAME);
98 if (eventsStart <= 0 || eventsStart != eventsEnd) {
99 NSK_COMPLAIN3("Unexpected number of events received for tedted thread:\n"
100 "# thread name: %s\n"
101 "# THREAD_START: %d events\n"
102 "# THREAD_END: %d events\n",
103 THREAD_NAME,
104 eventsStart, eventsEnd);
105 nsk_jvmti_setFailStatus();
106 }
107 }
108
109 NSK_DISPLAY0("Let debugee to finish\n");
110 if (!nsk_jvmti_resumeSync())
111 return;
112 }
113
114 /* ============================================================================= */
115
116 /** THREAD_START callback. */
117 JNIEXPORT void JNICALL
118 callbackThreadStart(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) {
119 /* check if event is for tested thread */
120 if (thread != NULL) {
121 jvmtiThreadInfo info;
122
123 if (!NSK_JVMTI_VERIFY(jvmti->GetThreadInfo(thread, &info))) {
124 nsk_jvmti_setFailStatus();
125 return;
126 }
127
128 if (info.name != NULL && strcmp(info.name, THREAD_NAME) == 0) {
129 NSK_DISPLAY2(" ... received THREAD_START event for tested thread: %p (%s)\n",
130 (void*)thread, info.name);
131 eventsStart++;
132
133 NSK_DISPLAY1("SetThreadLocalStorage() for current thread with pointer: %p\n",
134 (void*)initialStorage);
135 if (!NSK_JVMTI_VERIFY(jvmti->SetThreadLocalStorage(NULL, (void*)initialStorage))) {
136 nsk_jvmti_setFailStatus();
137 return;
138 }
139 }
140 }
141 }
142
143
144 /** THREAD_END callback. */
145 JNIEXPORT void JNICALL
146 callbackThreadEnd(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) {
147 /* check if event is for tested thread */
148 if (thread != NULL) {
149 jvmtiThreadInfo info;
150
151 if (!NSK_JVMTI_VERIFY(jvmti->GetThreadInfo(thread, &info))) {
152 nsk_jvmti_setFailStatus();
153 return;
154 }
155
156 if (info.name != NULL && strcmp(info.name, THREAD_NAME) == 0) {
157 NSK_DISPLAY2(" ... received THREAD_END event for tested thread: %p (%s)\n",
158 (void*)thread, info.name);
159 eventsEnd++;
160
161 /* get storage data */
162 {
163 StorageStructure* obtainedStorage = NULL;
164
165 NSK_DISPLAY0("GetThreadLocalStorage() for current thread\n");
166 if (!NSK_JVMTI_VERIFY(
167 jvmti->GetThreadLocalStorage(NULL, (void**)&obtainedStorage))) {
168 nsk_jvmti_setFailStatus();
169 return;
170 }
171 NSK_DISPLAY1(" ... got pointer: %p\n", (void*)obtainedStorage);
172
173 NSK_DISPLAY0("Check storage data obtained for current thread\n");
174 if (obtainedStorage != initialStorage) {
175 NSK_COMPLAIN3("Wrong storage pointer returned for current thread:\n"
176 "# thread: %p\n"
177 "# got pointer: %p\n"
178 "# expected: %p\n",
179 (void*)thread,
180 (void*)obtainedStorage, (void*)initialStorage);
181 nsk_jvmti_setFailStatus();
182 } else {
183 int changed = 0;
184 int i;
185
186 for (i = 0; i < STORAGE_DATA_SIZE; i++) {
187 if (obtainedStorage->data[i] != STORAGE_DATA_CHAR) {
188 changed++;
189 }
190 }
191
192 if (changed > 0) {
193 NSK_COMPLAIN3("Data changed in returned storage for current thread:\n"
194 "# thread: %p\n"
195 "# changed bytes: %d\n"
196 "# total bytes: %d\n",
197 (void*)thread,
198 changed, STORAGE_DATA_SIZE);
199 nsk_jvmti_setFailStatus();
200 }
201 }
202 }
203 }
204 }
205 }
206
207 /* ============================================================================= */
208
209 /** Agent library initialization. */
210 #ifdef STATIC_BUILD
211 JNIEXPORT jint JNICALL Agent_OnLoad_setthrdstor003(JavaVM *jvm, char *options, void *reserved) {
212 return Agent_Initialize(jvm, options, reserved);
213 }
214 JNIEXPORT jint JNICALL Agent_OnAttach_setthrdstor003(JavaVM *jvm, char *options, void *reserved) {
215 return Agent_Initialize(jvm, options, reserved);
216 }
217 JNIEXPORT jint JNI_OnLoad_setthrdstor003(JavaVM *jvm, char *options, void *reserved) {
218 return JNI_VERSION_1_8;
219 }
220 #endif
221 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
222 jvmtiEnv* jvmti = NULL;
223
224 /* init framework and parse options */
225 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
226 return JNI_ERR;
227
228 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
229
230 /* create JVMTI environment */
231 if (!NSK_VERIFY((jvmti =
232 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
233 return JNI_ERR;
234
235 /* set callbacks for thread events */
236 {
237 jvmtiEventCallbacks callbacks;
238 memset(&callbacks, 0, sizeof(callbacks));
239 callbacks.ThreadStart = callbackThreadStart;
240 callbacks.ThreadEnd = callbackThreadEnd;
241 if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
242 return JNI_ERR;
243 }
244
245 /* register agent proc and arg */
246 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
247 return JNI_ERR;
248
249 return JNI_OK;
250 }
251
252 /* ============================================================================= */
253
254 }