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diff --git a/man-pages-posix-2013/man3p/pthread_barrier_destroy.3p b/man-pages-posix-2013/man3p/pthread_barrier_destroy.3p new file mode 100644 index 0000000..124b447 --- /dev/null +++ b/man-pages-posix-2013/man3p/pthread_barrier_destroy.3p @@ -0,0 +1,168 @@ +'\" et +.TH PTHREAD_BARRIER_DESTROY "3P" 2013 "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 +pthread_barrier_destroy, +pthread_barrier_init +\(em destroy and initialize a barrier object +.SH SYNOPSIS +.LP +.nf +#include <pthread.h> +.P +int pthread_barrier_destroy(pthread_barrier_t *\fIbarrier\fP); +int pthread_barrier_init(pthread_barrier_t *restrict \fIbarrier\fP, + const pthread_barrierattr_t *restrict \fIattr\fP, unsigned \fIcount\fP); +.fi +.SH DESCRIPTION +The +\fIpthread_barrier_destroy\fR() +function shall destroy the barrier referenced by +.IR barrier +and release any resources used by the barrier. The effect of +subsequent use of the barrier is undefined until the barrier is +reinitialized by another call to +\fIpthread_barrier_init\fR(). +An implementation may use this function to set +.IR barrier +to an invalid value. The results are undefined if +\fIpthread_barrier_destroy\fR() +is called when any thread is blocked on the barrier, or if this +function is called with an uninitialized barrier. +.P +The +\fIpthread_barrier_init\fR() +function shall allocate any resources required to use the barrier +referenced by +.IR barrier +and shall initialize the barrier with attributes referenced by +.IR attr . +If +.IR attr +is NULL, the default barrier attributes shall be used; the effect is +the same as passing the address of a default barrier attributes +object. The results are undefined if +\fIpthread_barrier_init\fR() +is called when any thread is blocked on the barrier (that is, has not +returned from the +\fIpthread_barrier_wait\fR() +call). The results are undefined if a barrier is used without first +being initialized. The results are undefined if +\fIpthread_barrier_init\fR() +is called specifying an already initialized barrier. +.P +The +.IR count +argument specifies the number of threads that must call +\fIpthread_barrier_wait\fR() +before any of them successfully return from the call. The value +specified by +.IR count +must be greater than zero. +.P +If the +\fIpthread_barrier_init\fR() +function fails, the barrier shall not be initialized and the contents +of +.IR barrier +are undefined. +.P +Only the object referenced by +.IR barrier +may be used for performing synchronization. The result of referring to +copies of that object in calls to +\fIpthread_barrier_destroy\fR() +or +\fIpthread_barrier_wait\fR() +is undefined. +.SH "RETURN VALUE" +Upon successful completion, these functions shall return zero; +otherwise, an error number shall be returned to indicate the error. +.SH ERRORS +The +\fIpthread_barrier_init\fR() +function shall fail if: +.TP +.BR EAGAIN +The system lacks the necessary resources to initialize another barrier. +.TP +.BR EINVAL +The value specified by +.IR count +is equal to zero. +.TP +.BR ENOMEM +Insufficient memory exists to initialize the barrier. +.P +These functions shall not return an error code of +.BR [EINTR] . +.LP +.IR "The following sections are informative." +.SH EXAMPLES +None. +.SH "APPLICATION USAGE" +None. +.SH RATIONALE +If an implementation detects that the value specified by the +.IR barrier +argument to +\fIpthread_barrier_destroy\fR() +does not refer to an initialized barrier object, it is recommended that +the function should fail and report an +.BR [EINVAL] +error. +.P +If an implementation detects that the value specified by the +.IR attr +argument to +\fIpthread_barrier_init\fR() +does not refer to an initialized barrier attributes object, it is +recommended that the function should fail and report an +.BR [EINVAL] +error. +.P +If an implementation detects that the value specified by the +.IR barrier +argument to +\fIpthread_barrier_destroy\fR() +or +\fIpthread_barrier_init\fR() +refers to a barrier that is in use (for example, in a +\fIpthread_barrier_wait\fR() +call) by another thread, or detects that the value specified by the +.IR barrier +argument to +\fIpthread_barrier_init\fR() +refers to an already initialized barrier object, it is recommended +that the function should fail and report an +.BR [EBUSY] +error. +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +.IR "\fIpthread_barrier_wait\fR\^(\|)" +.P +The Base Definitions volume of POSIX.1\(hy2008, +.IR "\fB<pthread.h>\fP" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, Copyright (C) 2013 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. +(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html . + +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 . |