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diff --git a/man-pages-posix-2017/man0p/semaphore.h.0p b/man-pages-posix-2017/man0p/semaphore.h.0p new file mode 100644 index 0000000..c8d1bd6 --- /dev/null +++ b/man-pages-posix-2017/man0p/semaphore.h.0p @@ -0,0 +1,102 @@ +'\" et +.TH semaphore.h "0P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual" +.\" +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. +.\" +.SH NAME +semaphore.h +\(em semaphores +.SH SYNOPSIS +.LP +.nf +#include <semaphore.h> +.fi +.SH DESCRIPTION +The +.IR <semaphore.h> +header shall define the +.BR sem_t +type, used in performing semaphore operations. The semaphore may be +implemented using a file descriptor, in which case applications are +able to open up at least a total of +{OPEN_MAX} +files and semaphores. +.P +The +.IR <semaphore.h> +header shall define the symbolic constant SEM_FAILED which shall +have type +.BR "sem_t *" . +.P +The following shall be declared as functions and may also be defined +as macros. Function prototypes shall be provided. +.sp +.RS 4 +.nf + +int sem_close(sem_t *); +int sem_destroy(sem_t *); +int sem_getvalue(sem_t *restrict, int *restrict); +int sem_init(sem_t *, int, unsigned); +sem_t *sem_open(const char *, int, ...); +int sem_post(sem_t *); +int sem_timedwait(sem_t *restrict, const struct timespec *restrict); +int sem_trywait(sem_t *); +int sem_unlink(const char *); +int sem_wait(sem_t *); +.fi +.P +.RE +.P +Inclusion of the +.IR <semaphore.h> +header may make visible symbols defined in the +.IR <fcntl.h> +and +.IR <time.h> +headers. +.LP +.IR "The following sections are informative." +.SH "APPLICATION USAGE" +None. +.SH RATIONALE +None. +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +.IR "\fB<fcntl.h>\fP", +.IR "\fB<sys_types.h>\fP", +.IR "\fB<time.h>\fP" +.P +The System Interfaces volume of POSIX.1\(hy2017, +.IR "\fIsem_close\fR\^(\|)", +.IR "\fIsem_destroy\fR\^(\|)", +.IR "\fIsem_getvalue\fR\^(\|)", +.IR "\fIsem_init\fR\^(\|)", +.IR "\fIsem_open\fR\^(\|)", +.IR "\fIsem_post\fR\^(\|)", +.IR "\fIsem_timedwait\fR\^(\|)", +.IR "\fIsem_trywait\fR\^(\|)", +.IR "\fIsem_unlink\fR\^(\|)" +.\" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1-2017, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, 2018 Edition, +Copyright (C) 2018 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. +In the event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.opengroup.org/unix/online.html . +.PP +Any typographical or formatting errors that appear +in this page are most likely +to have been introduced during the conversion of the source files to +man page format. To report such errors, see +https://www.kernel.org/doc/man-pages/reporting_bugs.html . |