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freebsd-nq/sys/posix4/semaphore.h

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Reviewed by: msmith, bde long ago POSIX.4 headers and sysctl variables. Nothing should change unless POSIX4 is defined or _POSIX_VERSION is set to 199309.
1998-03-04 10:27:00 +00:00
/*-
* Copyright (c) 1996, 1997
* HD Associates, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by HD Associates, Inc
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 05:07:58 +00:00
* $FreeBSD$
Reviewed by: msmith, bde long ago POSIX.4 headers and sysctl variables. Nothing should change unless POSIX4 is defined or _POSIX_VERSION is set to 199309.
1998-03-04 10:27:00 +00:00
*/
Fix various style(9) bugs: o Unusual order of #ifndef _FOO_H_, followed by license. o Missing tabs in typedef and #define. o Reversed comment for #endif.
2002-10-03 18:34:13 +00:00
/* semaphore.h: POSIX 1003.1b semaphores */
#ifndef _SEMAPHORE_H_
#define _SEMAPHORE_H_
Track libc_r addition of semaphores implementation. Approved by: jkh
2000-01-20 07:55:42 +00:00
/* Opaque type definition. */
struct sem;
Fix various style(9) bugs: o Unusual order of #ifndef _FOO_H_, followed by license. o Missing tabs in typedef and #define. o Reversed comment for #endif.
2002-10-03 18:34:13 +00:00
typedef struct sem * sem_t;
Track libc_r addition of semaphores implementation. Approved by: jkh
2000-01-20 07:55:42 +00:00
Fix various style(9) bugs: o Unusual order of #ifndef _FOO_H_, followed by license. o Missing tabs in typedef and #define. o Reversed comment for #endif.
2002-10-03 18:34:13 +00:00
#define SEM_FAILED ((sem_t *)0)
o Adjust the SEM_VALUE_MAX macro so that <machine/limits.h> isn't needed. o Remove unneeded includes which only add namespace pollution. o Sort function prototypes. o Add restrict type-qualifier to sem_getvalue().
2002-10-04 21:31:33 +00:00
#define SEM_VALUE_MAX (~0U) /* Equivalent to UINT_MAX. */
Reviewed by: msmith, bde long ago POSIX.4 headers and sysctl variables. Nothing should change unless POSIX4 is defined or _POSIX_VERSION is set to 199309.
1998-03-04 10:27:00 +00:00
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 05:07:58 +00:00
#ifndef _KERNEL
Reviewed by: msmith, bde long ago POSIX.4 headers and sysctl variables. Nothing should change unless POSIX4 is defined or _POSIX_VERSION is set to 199309.
1998-03-04 10:27:00 +00:00
#include <sys/cdefs.h>
Reviewed by: bde Changes to support building with _POSIX_SOURCE set to 199309L: 1. Add sys/_posix.h to handle those preprocessor defs that POSIX says have effects when defined before including any header files; 2. Change POSIX4_VISIBLE back to _POSIX4_VISIBLE 3. Add _POSIX4_VISIBLE_HISTORICALLY for pre-existing BSD features now defined in POSIX. These show up when: _POSIX_SOURCE and _POSIX_C_SOURCE are not set or _POSIX_C_SOURCE is set >= 199309L and vanish when: _POSIX_SOURCE is set or _POSIX_C_SOURCE is < 199309L. 4. Explain these in man 9 posix4; 5. Include _posix.h and conditionalize on new feature test.
1998-03-08 17:25:38 +00:00
__BEGIN_DECLS
o Adjust the SEM_VALUE_MAX macro so that <machine/limits.h> isn't needed. o Remove unneeded includes which only add namespace pollution. o Sort function prototypes. o Add restrict type-qualifier to sem_getvalue().
2002-10-04 21:31:33 +00:00
int sem_close(sem_t *);
Remove __P.
2002-03-19 22:20:14 +00:00
int sem_destroy(sem_t *);
o Adjust the SEM_VALUE_MAX macro so that <machine/limits.h> isn't needed. o Remove unneeded includes which only add namespace pollution. o Sort function prototypes. o Add restrict type-qualifier to sem_getvalue().
2002-10-04 21:31:33 +00:00
int sem_getvalue(sem_t * __restrict, int * __restrict);
int sem_init(sem_t *, int, unsigned int);
Remove __P.
2002-03-19 22:20:14 +00:00
sem_t *sem_open(const char *, int, ...);
o Adjust the SEM_VALUE_MAX macro so that <machine/limits.h> isn't needed. o Remove unneeded includes which only add namespace pollution. o Sort function prototypes. o Add restrict type-qualifier to sem_getvalue().
2002-10-04 21:31:33 +00:00
int sem_post(sem_t *);
int sem_trywait(sem_t *);
Remove __P.
2002-03-19 22:20:14 +00:00
int sem_unlink(const char *);
int sem_wait(sem_t *);
Reviewed by: bde Changes to support building with _POSIX_SOURCE set to 199309L: 1. Add sys/_posix.h to handle those preprocessor defs that POSIX says have effects when defined before including any header files; 2. Change POSIX4_VISIBLE back to _POSIX4_VISIBLE 3. Add _POSIX4_VISIBLE_HISTORICALLY for pre-existing BSD features now defined in POSIX. These show up when: _POSIX_SOURCE and _POSIX_C_SOURCE are not set or _POSIX_C_SOURCE is set >= 199309L and vanish when: _POSIX_SOURCE is set or _POSIX_C_SOURCE is < 199309L. 4. Explain these in man 9 posix4; 5. Include _posix.h and conditionalize on new feature test.
1998-03-08 17:25:38 +00:00
__END_DECLS
Reviewed by: msmith, bde long ago POSIX.4 headers and sysctl variables. Nothing should change unless POSIX4 is defined or _POSIX_VERSION is set to 199309.
1998-03-04 10:27:00 +00:00
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 05:07:58 +00:00
#endif
Reviewed by: msmith, bde long ago POSIX.4 headers and sysctl variables. Nothing should change unless POSIX4 is defined or _POSIX_VERSION is set to 199309.
1998-03-04 10:27:00 +00:00
Fix various style(9) bugs: o Unusual order of #ifndef _FOO_H_, followed by license. o Missing tabs in typedef and #define. o Reversed comment for #endif.
2002-10-03 18:34:13 +00:00
#endif /* !_SEMAPHORE_H_ */
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