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OpenSolaris 2009.06 - man page for pthread_condattr_setpshared (opensolaris section 3c)

pthread_condattr_getpshared(3C) 			   Standard C Library Functions 			   pthread_condattr_getpshared(3C)

NAME
pthread_condattr_getpshared, pthread_condattr_setpshared - get or set process-shared condition variable attributes
SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ] #include <pthread.h> int pthread_condattr_getpshared( const pthread_condattr_t *restrict attr, int *restrict pshared); int pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared);
DESCRIPTION
The pthread_condattr_getpshared() function obtains the value of the process-shared attribute from the attributes object referenced by attr. The pthread_condattr_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 permit a condition variable to be operated upon by any thread that has access to the memory where the condition variable is allocated, even if the condition variable is allocated in memory that is shared by multiple processes. If the process-shared attribute is PTHREAD_PROCESS_PRIVATE, the condition variable will only be operated upon by threads created within the same process as the thread that initialized the condition variable; if threads of differing processes attempt to operate on such a condition variable, the behavior is undefined. The default value of the attribute is PTHREAD_PROCESS_PRIVATE. Additional attributes, their default values, and the names of the associated functions to get and set those attribute values are implemen- tation-dependent.
RETURN VALUES
If successful, the pthread_condattr_setpshared() function returns 0. Otherwise, an error number is returned to indicate the error. If successful, the pthread_condattr_getpshared() function 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.
ERRORS
The pthread_condattr_getpshared() and pthread_condattr_setpshared() functions may fail if: EINVAL The value specified by attr is invalid. The pthread_condattr_setpshared() function will 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_condattr_init(3C), pthread_create(3C), pthread_mutex_init(3C), pthread_cond_init(3C), attributes(5), standards(5) SunOS 5.11 23 Mar 2005 pthread_condattr_getpshared(3C)

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