pthread_mutexattr_getpshared man page on SmartOS

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PTHREAD_MUTEXATTR_GETPSHARED(3C)	      PTHREAD_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)

				 Mar 23, 2005 PTHREAD_MUTEXATTR_GETPSHARED(3C)
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