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* Subsequent calls with the same once_control do not call init routine.
21
22* The steps are:
23* -> Create several threads
24* -> each call pthread_once
25* -> check the init_routine executed once
26
27* The test fails if the init_routine has not been called or has
28* been called several times.
29
30*/
31
32
33/* We are testing conformance to IEEE Std 1003.1, 2003 Edition */
34#define _POSIX_C_SOURCE 200112L
35
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/********************************************************************************************/
47/******************************   Test framework   *****************************************/
48/********************************************************************************************/
49#include "testfrmw.h"
50 #include "testfrmw.c"
51/* This header is responsible for defining the following macros:
52 * UNRESOLVED(ret, descr);
53 *    where descr is a description of the error and ret is an int (error code for example)
54 * FAILED(descr);
55 *    where descr is a short text saying why the test has failed.
56 * PASSED();
57 *    No parameter.
58 *
59 * Both three macros shall terminate the calling process.
60 * The testcase shall not terminate in any other maneer.
61 *
62 * The other file defines the functions
63 * void output_init()
64 * void output(char * string, ...)
65 *
66 * Those may be used to output information.
67 */
68
69/********************************************************************************************/
70/********************************** Configuration ******************************************/
71/********************************************************************************************/
72#ifndef VERBOSE
73#define VERBOSE 1
74#endif
75
76#define NTHREADS 30
77
78/********************************************************************************************/
79/***********************************    Test case   *****************************************/
80/********************************************************************************************/
81
82int control;
83pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
84
85void my_init( void )
86{
87	int ret = 0;
88	ret = pthread_mutex_lock( &mtx );
89
90	if ( ret != 0 )
91	{
92		UNRESOLVED( ret, "Failed to lock mutex in initializer" );
93	}
94
95	control++;
96
97	ret = pthread_mutex_unlock( &mtx );
98
99	if ( ret != 0 )
100	{
101		UNRESOLVED( ret, "Failed to unlock mutex in initializer" );
102	}
103
104	return ;
105}
106
107/* Thread function */
108void * threaded ( void * arg )
109{
110	int ret;
111
112	ret = pthread_once( arg, my_init );
113
114	if ( ret != 0 )
115	{
116		UNRESOLVED( ret, "pthread_once failed" );
117	}
118
119	return NULL;
120}
121
122/* The main test function. */
123int main( int argc, char * argv[] )
124{
125	int ret, i;
126
127	pthread_once_t myctl = PTHREAD_ONCE_INIT;
128
129	pthread_t th[ NTHREADS ];
130
131	/* Initialize output */
132	output_init();
133
134	control = 0;
135
136	/* Create the children */
137
138	for ( i = 0; i < NTHREADS; i++ )
139	{
140		ret = pthread_create( &th[ i ], NULL, threaded, &myctl );
141
142		if ( ret != 0 )
143		{
144			UNRESOLVED( ret, "Failed to create a thread" );
145		}
146	}
147
148	/* Then join */
149	for ( i = 0; i < NTHREADS; i++ )
150	{
151		ret = pthread_join( th[ i ], NULL );
152
153		if ( ret != 0 )
154		{
155			UNRESOLVED( ret, "Failed to join a thread" );
156		}
157	}
158
159	/* Fetch the memory */
160	ret = pthread_mutex_lock( &mtx );
161
162	if ( ret != 0 )
163	{
164		UNRESOLVED( ret, "Failed to lock mutex in initializer" );
165	}
166
167	if ( control != 1 )
168	{
169		output( "Control: %d\n", control );
170		FAILED( "The initializer function did not execute once" );
171	}
172
173	ret = pthread_mutex_unlock( &mtx );
174
175	if ( ret != 0 )
176	{
177		UNRESOLVED( ret, "Failed to unlock mutex in initializer" );
178	}
179
180	PASSED;
181}
182
183
184