1/*
2 * Copyright (c) 2004, Bull S.A..  All rights reserved.
3 * Created by: Sebastien Decugis
4
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write the Free Software Foundation, Inc., 59
15 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
16
17
18 * This sample test aims to check the following assertion:
19 *
20 * The function does not return EINTR
21
22 * The steps are:
23 * -> kill a thread which calls pthread_detach()
24 * -> check that EINTR is never returned
25
26 */
27
28
29 /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */
30 #define _POSIX_C_SOURCE 200112L
31
32 /* Some routines are part of the XSI Extensions */
33#ifndef WITHOUT_XOPEN
34 #define _XOPEN_SOURCE	600
35#endif
36/********************************************************************************************/
37/****************************** standard includes *****************************************/
38/********************************************************************************************/
39 #include <pthread.h>
40 #include <stdarg.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <unistd.h>
45
46 #include <sched.h>
47 #include <semaphore.h>
48 #include <errno.h>
49 #include <assert.h>
50 #include <sys/wait.h>
51 #include <time.h>
52 #include <signal.h>
53
54/********************************************************************************************/
55/******************************   Test framework   *****************************************/
56/********************************************************************************************/
57 #include "testfrmw.h"
58 #include "testfrmw.c"
59 /* This header is responsible for defining the following macros:
60  * UNRESOLVED(ret, descr);
61  *    where descr is a description of the error and ret is an int (error code for example)
62  * FAILED(descr);
63  *    where descr is a short text saying why the test has failed.
64  * PASSED();
65  *    No parameter.
66  *
67  * Both three macros shall terminate the calling process.
68  * The testcase shall not terminate in any other maneer.
69  *
70  * The other file defines the functions
71  * void output_init()
72  * void output(char * string, ...)
73  *
74  * Those may be used to output information.
75  */
76
77/********************************************************************************************/
78/********************************** Configuration ******************************************/
79/********************************************************************************************/
80#ifndef VERBOSE
81#define VERBOSE 1
82#endif
83
84#define WITH_SYNCHRO
85
86
87/********************************************************************************************/
88/***********************************    Test cases  *****************************************/
89/********************************************************************************************/
90
91#include "threads_scenarii.c"
92
93/* This file will define the following objects:
94 * scenarii: array of struct __scenario type.
95 * NSCENAR : macro giving the total # of scenarii
96 * scenar_init(): function to call before use the scenarii array.
97 * scenar_fini(): function to call after end of use of the scenarii array.
98 */
99
100
101/********************************************************************************************/
102/***********************************    Real Test   *****************************************/
103/********************************************************************************************/
104
105char do_it=1;
106unsigned long count_ope=0;
107#ifdef WITH_SYNCHRO
108sem_t semsig1;
109sem_t semsig2;
110unsigned long count_sig=0;
111#endif
112
113sigset_t usersigs;
114
115typedef struct
116{
117	int	sig;
118#ifdef WITH_SYNCHRO
119	sem_t	*sem;
120#endif
121} thestruct;
122
123/* the following function keeps on sending the signal to the process */
124void * sendsig (void * arg)
125{
126	thestruct *thearg = (thestruct *) arg;
127	int ret;
128	pid_t process;
129
130	process=getpid();
131
132	/* We block the signals SIGUSR1 and SIGUSR2 for this THREAD */
133	ret = pthread_sigmask(SIG_BLOCK, &usersigs, NULL);
134	if (ret != 0)  {  UNRESOLVED(ret, "Unable to block SIGUSR1 and SIGUSR2 in signal thread");  }
135
136	while (do_it)
137	{
138		#ifdef WITH_SYNCHRO
139		if ((ret = sem_wait(thearg->sem)))
140		{ UNRESOLVED(errno, "Sem_wait in sendsig"); }
141		count_sig++;
142		#endif
143
144		ret = kill(process, thearg->sig);
145		if (ret != 0)  { UNRESOLVED(errno, "Kill in sendsig"); }
146
147	}
148	return NULL;
149}
150
151/* Next are the signal handlers. */
152/* This one is registered for signal SIGUSR1 */
153void sighdl1(int sig)
154{
155#ifdef WITH_SYNCHRO
156	if (sem_post(&semsig1))
157	{ UNRESOLVED(errno, "Sem_post in signal handler 1"); }
158#endif
159}
160/* This one is registered for signal SIGUSR2 */
161void sighdl2(int sig)
162{
163#ifdef WITH_SYNCHRO
164	if (sem_post(&semsig2))
165	{ UNRESOLVED(errno, "Sem_post in signal handler 2"); }
166#endif
167}
168
169/* Thread function -- almost does nothing */
170void * threaded(void * arg)
171{
172	int ret;
173
174 	/* We don't block the signals SIGUSR1 and SIGUSR2 for this THREAD */
175	ret = pthread_sigmask(SIG_UNBLOCK, &usersigs, NULL);
176	if (ret != 0)  {  UNRESOLVED(ret, "Unable to unblock SIGUSR1 and SIGUSR2 in worker thread");  }
177
178	ret = pthread_detach(pthread_self());
179	if (ret == EINTR)  {  FAILED("pthread_detach() returned EINTR");  }
180
181	/* Signal we're done */
182	do { ret = sem_post(&scenarii[sc].sem); }
183	while ((ret == -1) && (errno == EINTR));
184	if (ret == -1)  {  UNRESOLVED(errno, "Failed to wait for the semaphore");  }
185
186	/* return */
187	return arg;
188}
189
190/* Test function -- creates the thread. */
191void * test(void * arg)
192{
193	int ret=0;
194	pthread_t child;
195
196 	/* We block the signals SIGUSR1 and SIGUSR2 for this THREAD */
197	ret = pthread_sigmask(SIG_BLOCK, &usersigs, NULL);
198	if (ret != 0)  {  UNRESOLVED(ret, "Unable to block SIGUSR1 and SIGUSR2 in signal thread");  }
199
200	sc = 0;
201
202	while (do_it)
203	{
204		#if VERBOSE > 5
205		output("-----\n");
206		output("Starting test with scenario (%i): %s\n", sc, scenarii[sc].descr);
207		#endif
208
209		count_ope++;
210
211		ret = pthread_create(&child, &scenarii[sc].ta, threaded, NULL);
212		switch (scenarii[sc].result)
213		{
214			case 0: /* Operation was expected to succeed */
215				if (ret != 0)  {  UNRESOLVED(ret, "Failed to create this thread");  }
216				break;
217
218			case 1: /* Operation was expected to fail */
219				if (ret == 0)  {  UNRESOLVED(-1, "An error was expected but the thread creation succeeded");  }
220				break;
221
222			case 2: /* We did not know the expected result */
223			default:
224				#if VERBOSE > 5
225				if (ret == 0)
226					{ output("Thread has been created successfully for this scenario\n"); }
227				else
228					{ output("Thread creation failed with the error: %s\n", strerror(ret)); }
229				#endif
230				;
231		}
232		if (ret == 0) /* The new thread is running */
233		{
234			/* Just wait for the thread to terminate */
235			do { ret = sem_wait(&scenarii[sc].sem); }
236			while ((ret == -1) && (errno == EINTR));
237			if (ret == -1)  {  UNRESOLVED(errno, "Failed to wait for the semaphore");  }
238		}
239
240		/* Change thread attribute for the next loop */
241		sc++;
242		sc %= NSCENAR;
243	}
244	return NULL;
245}
246
247/* Main function */
248int main (int argc, char * argv[])
249{
250	int ret;
251	pthread_t th_work, th_sig1, th_sig2;
252	thestruct arg1, arg2;
253	struct sigaction sa;
254
255	/* Initialize output routine */
256	output_init();
257
258	/* Initialize thread attribute objects */
259	scenar_init();
260
261	/* We need to register the signal handlers for the PROCESS */
262	sigemptyset (&sa.sa_mask);
263	sa.sa_flags = 0;
264	sa.sa_handler = sighdl1;
265	if ((ret = sigaction (SIGUSR1, &sa, NULL)))
266	{ UNRESOLVED(ret, "Unable to register signal handler1"); }
267	sa.sa_handler = sighdl2;
268	if ((ret = sigaction (SIGUSR2, &sa, NULL)))
269	{ UNRESOLVED(ret, "Unable to register signal handler2"); }
270
271	/* We prepare a signal set which includes SIGUSR1 and SIGUSR2 */
272	sigemptyset(&usersigs);
273	ret = sigaddset(&usersigs, SIGUSR1);
274	ret |= sigaddset(&usersigs, SIGUSR2);
275	if (ret != 0)  {  UNRESOLVED(ret, "Unable to add SIGUSR1 or 2 to a signal set");  }
276
277	/* We now block the signals SIGUSR1 and SIGUSR2 for this THREAD */
278	ret = pthread_sigmask(SIG_BLOCK, &usersigs, NULL);
279	if (ret != 0)  {  UNRESOLVED(ret, "Unable to block SIGUSR1 and SIGUSR2 in main thread");  }
280
281	#ifdef WITH_SYNCHRO
282	if (sem_init(&semsig1, 0, 1))
283	{ UNRESOLVED(errno, "Semsig1  init"); }
284	if (sem_init(&semsig2, 0, 1))
285	{ UNRESOLVED(errno, "Semsig2  init"); }
286	#endif
287
288	if ((ret = pthread_create(&th_work, NULL, test, NULL)))
289	{ UNRESOLVED(ret, "Worker thread creation failed"); }
290
291	arg1.sig = SIGUSR1;
292	arg2.sig = SIGUSR2;
293#ifdef WITH_SYNCHRO
294	arg1.sem = &semsig1;
295	arg2.sem = &semsig2;
296#endif
297
298
299
300	if ((ret = pthread_create(&th_sig1, NULL, sendsig, (void *)&arg1)))
301	{ UNRESOLVED(ret, "Signal 1 sender thread creation failed"); }
302	if ((ret = pthread_create(&th_sig2, NULL, sendsig, (void *)&arg2)))
303	{ UNRESOLVED(ret, "Signal 2 sender thread creation failed"); }
304
305
306
307	/* Let's wait for a while now */
308	sleep(1);
309
310
311	/* Now stop the threads and join them */
312	do { do_it=0; }
313	while (do_it);
314
315
316	if ((ret = pthread_join(th_sig1, NULL)))
317	{ UNRESOLVED(ret, "Signal 1 sender thread join failed"); }
318
319	if ((ret = pthread_join(th_sig2, NULL)))
320	{ UNRESOLVED(ret, "Signal 2 sender thread join failed"); }
321
322
323	if ((ret = pthread_join(th_work, NULL)))
324	{ UNRESOLVED(ret, "Worker thread join failed"); }
325
326
327	scenar_fini();
328
329	#if VERBOSE > 0
330	output("Test executed successfully.\n");
331	output("  %d thread detached.\n", count_ope);
332	#ifdef WITH_SYNCHRO
333	output("  %d signals were sent meanwhile.\n", count_sig);
334	#endif
335	#endif
336	PASSED;
337}
338
339