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pthread_barrierattr_destroy(3p) — Linux manual page

PTHREAD..._DESTROY(3P)  POSIX Programmer's ManualPTHREAD..._DESTROY(3P)

PROLOG        top

       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.

NAME        top

       pthread_barrierattr_destroy, pthread_barrierattr_init — destroy       and initialize the barrier attributes object

SYNOPSIS        top

       #include <pthread.h>       int pthread_barrierattr_destroy(pthread_barrierattr_t *attr);       int pthread_barrierattr_init(pthread_barrierattr_t *attr);

DESCRIPTION        top

       Thepthread_barrierattr_destroy() function shall destroy a barrier       attributes object. A destroyedattr attributes object can be       reinitialized usingpthread_barrierattr_init(); the results of       otherwise referencing the object after it has been destroyed are       undefined. An implementation may causepthread_barrierattr_destroy() to set the object referenced byattr       to an invalid value.       Thepthread_barrierattr_init() function shall initialize a barrier       attributes objectattr with the default value for all of the       attributes defined by the implementation.       Ifpthread_barrierattr_init() is called specifying an already       initializedattr attributes object, the results are undefined.       After a barrier attributes object has been used to initialize one       or more barriers, any function affecting the attributes object       (including destruction) shall not affect any previously       initialized barrier.       The behavior is undefined if the value specified by theattr       argument topthread_barrierattr_destroy() does not refer to an       initialized barrier attributes object.

RETURN VALUE        top

       If successful, thepthread_barrierattr_destroy() andpthread_barrierattr_init() functions shall return zero; otherwise,       an error number shall be returned to indicate the error.

ERRORS        top

       Thepthread_barrierattr_init() function shall fail if:ENOMEMInsufficient memory exists to initialize the barrier              attributes object.       These functions shall not return an error code of[EINTR].The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       If an implementation detects that the value specified by theattr       argument topthread_barrierattr_destroy() does not refer to an       initialized barrier attributes object, it is recommended that the       function should fail and report an[EINVAL]error.

FUTURE DIRECTIONS        top

       None.

SEE ALSO        top

pthread_barrierattr_getpshared(3p)       The Base Definitions volume of POSIX.1‐2017,pthread.h(0p)

COPYRIGHT        top

       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 athttp://www.opengroup.org/unix/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, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017PTHREAD..._DESTROY(3P)

Pages that refer to this page:pthread.h(0p), pthread_barrierattr_getpshared(3p), pthread_barrierattr_init(3p)

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