"PTHREAD_RWLOCKATTR_DESTROY"(P) manual page

From 41f88a82b33cdb357c83b582381232733ed2d039 Mon Sep 17 00:00:00 2001 From: rpj Date: Thu, 5 May 2005 14:18:27 +0000 Subject: '' --- manual/pthread_rwlockattr_init.html | 139 ++++++++++++++++++++++++++++++++++++ 1 file changed, 139 insertions(+) create mode 100644 manual/pthread_rwlockattr_init.html (limited to 'manual/pthread_rwlockattr_init.html') diff --git a/manual/pthread_rwlockattr_init.html b/manual/pthread_rwlockattr_init.html new file mode 100644 index 0000000..e43f0cc --- /dev/null +++ b/manual/pthread_rwlockattr_init.html @@ -0,0 +1,139 @@ + + + + + "PTHREAD_RWLOCKATTR_DESTROY"(P) manual page + + + + + + + +

Table of Contents

Name

pthread_rwlockattr_destroy, pthread_rwlockattr_init - destroy and +initialize the read-write lock attributes object +

Synopsis

#include <pthread.h> +

int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr); +
int pthread_rwlockattr_init(pthread_rwlockattr_t *attr); + +

Description

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. +

Pthreads-w32 defines _POSIX_READER_WRITER_LOCKS in +pthread.h as 200112L to indicate that the reader/writer routines are +implemented and may be used.

Return Value

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. +

Errors

The pthread_rwlockattr_destroy function may fail if: +

EINVAL +: + The value specified by attr is invalid. +

+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. +

Examples

None. +

Application Usage

None. +

Rationale

None. +

Future Directions

None. +

Copyright

Portions of this text are reprinted and reproduced in electronic +form from IEEE Std 1003.1, 2003 Edition, Standard for Information +Technology -- Portable Operating System Interface (POSIX), The Open +Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 +. +

Modified by Ross Johnson for use with Pthreads-w32.

Table of Contents

Name +
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Synopsis +
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Description +
+
Return + Value +
+
Errors +
+
Examples +
+
Application + Usage +
+
Rationale +
+
Future + Directions +
+
See + Also +
+
Copyright +
+

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