pthread_mutexattr_getpshared man page on SunOS

Man page or keyword search:  
man Server   20652 pages
apropos Keyword Search (all sections)
Output format
SunOS logo
[printable version]

pthread_mutexattr_getpshaStandard C Library Fupthread_mutexattr_getpshared(3C)

NAME
       pthread_mutexattr_getpshared, pthread_mutexattr_setpshared - get or set
       process-shared attribute

SYNOPSIS
       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

       int  pthread_mutexattr_getpshared(const	pthread_mutexattr_t  *restrict
       attr, int *restrict pshared);

       int    pthread_mutexattr_setpshared(pthread_mutexattr_t	  *attr,   int
       pshared);

DESCRIPTION
       The pthread_mutexattr_getpshared() function obtains the	value  of  the
       process-shared attribute from the attributes object referenced by attr.
       The pthread_mutexattr_setpshared() function is used to set the process-
       shared  attribute  in  an  initialized  attributes object referenced by
       attr.

       The process-shared attribute is set to  PTHREAD_PROCESS_SHARED to  per‐
       mit  a  mutex  to be operated upon by any thread that has access to the
       memory where the mutex is allocated, even if the mutex is allocated  in
       memory  that  is	 shared	 by  multiple processes. If the process-shared
       attribute is  PTHREAD_PROCESS_PRIVATE, the mutex will only be  operated
       upon by threads created within the same process as the thread that ini‐
       tialized the mutex; if threads of differing processes attempt to	 oper‐
       ate  on	such  a mutex, the behavior is undefined. The default value of
       the attribute is PTHREAD_PROCESS_PRIVATE.

RETURN VALUES
       Upon successful completion, pthread_mutexattr_getpshared()  returns   0
       and  stores  the value of the process-shared attribute of attr into the
       object referenced by the pshared parameter.  Otherwise, an error number
       is returned to indicate the error.

       Upon  successful completion, pthread_mutexattr_setpshared() returns  0.
       Otherwise, an error number is returned to indicate the error.

ERRORS
       The pthread_mutexattr_getpshared()  and	pthread_mutexattr_setpshared()
       functions may fail if:

       EINVAL	       The value specified by attr is invalid.

       The pthread_mutexattr_setpshared() function may fail if:

       EINVAL	       The  new	 value	specified for the attribute is outside
		       the range of legal values for that attribute.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Standard			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │MT-Safe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       pthread_create(3C), pthread_mutex_init(3C), pthread_mutexattr_init(3C),
       pthread_cond_init(3C), attributes(5), standards(5)

SunOS 5.10			  23 Mar 2005 pthread_mutexattr_getpshared(3C)
[top]

List of man pages available for SunOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net