PTHREAD_RWLOCKATTR_GE... BSD Library Functions Manual PTHREAD_RWLOCKATTR_GE...
NAME
pthread_rwlockattr_getpshared -- get the process shared attribute
SYNOPSIS
#include <pthread.h>
int
pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *restrict attr,
int *restrict pshared);
DESCRIPTION
The pthread_rwlockattr_getpshared() function is used to get the process-
shared setting of a read/write lock attribute object. The setting is
returned via pshared, and may be one of two values:
PTHREAD_PROCESS_SHARED Any thread of any process that has access to the
memory where the read/write lock resides can
manipulate the lock.
PTHREAD_PROCESS_PRIVATE Only threads created within the same process as
the thread that initialized the read/write lock
can manipulate the lock. This is the default
value.
RETURN VALUES
If successful, the pthread_rwlockattr_getpshared() function will return
zero. Otherwise, an error number will be returned to indicate the error.
SEE ALSO
pthread_rwlock_init(3), pthread_rwlockattr_init(3),
pthread_rwlockattr_setpshared(3)
STANDARDS
The pthread_rwlockattr_getpshared() function is expected to conform to
Version 2 of the Single UNIX Specification (``SUSv2'').
ERRORS
pthread_rwlockattr_getpshared() may fail if:
[EINVAL] The value specified by attr is invalid.
HISTORY
The pthread_rwlockattr_getpshared() function first appeared in
FreeBSD 3.0.
BSD March 22, 1999 BSD
Mac OS X 10.8 - Generated Thu Aug 30 10:04:16 CDT 2012