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PTHREAD_RWLOCKATTR_DESTROY(3P)X Programmer's ManualAD_RWLOCKATTR_DESTROY(3P)
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.
pthread_rwlockattr_destroy, pthread_rwlockattr_init — destroy and
initialize the read-write lock attributes object
#include <pthread.h>
int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr);
int pthread_rwlockattr_init(pthread_rwlockattr_t *attr);
The pthread_rwlockattr_destroy() function shall destroy a read-write
lock attributes object. A destroyed attr attributes object can be
reinitialized using pthread_rwlockattr_init(); the results of
otherwise referencing the object after it has been destroyed are
undefined. An implementation may cause pthread_rwlockattr_destroy()
to set the object referenced by attr to an invalid value.
The pthread_rwlockattr_init() function shall initialize a read-write
lock attributes object attr with the default value for all of the
attributes defined by the implementation.
Results are undefined if pthread_rwlockattr_init() is called
specifying an already initialized attr attributes object.
After a read-write lock attributes object has been used to initialize
one or more read-write locks, any function affecting the attributes
object (including destruction) shall not affect any previously
initialized read-write locks.
The behavior is undefined if the value specified by the attr argument
to pthread_rwlockattr_destroy() does not refer to an initialized
read-write lock attributes object.
If successful, the pthread_rwlockattr_destroy() and
pthread_rwlockattr_init() functions shall return zero; otherwise, an
error number shall be returned to indicate the error.
The pthread_rwlockattr_init() function shall fail if:
ENOMEM Insufficient memory exists to initialize the read-write lock
attributes object.
These functions shall not return an error code of [EINTR].
The following sections are informative.
None.
None.
If an implementation detects that the value specified by the attr
argument to pthread_rwlockattr_destroy() does not refer to an
initialized read-write lock attributes object, it is recommended that
the function should fail and report an [EINVAL] error.
None.
pthread_rwlock_destroy(3p), pthread_rwlockattr_getpshared(3p)
The Base Definitions volume of POSIX.1‐2008, pthread.h(0p)
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 .
IEEE/The Open Group 2013 PTHREAD_RWLOCKATTR_DESTROY(3P)
Pages that refer to this page: pthread.h(0p), pthread_rwlockattr_getpshared(3p), pthread_rwlockattr_init(3p)