pthread_rwlockattr_getpshared - get the process shared attribute
#include <pthread.h> int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr, int *pshared);
The pthread_rwlockattr_getpshared() function is used to get the process shared setting of a read/write lock attribute object. The setting is re- turned 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 re- sides can manipulate the lock. PTHREAD_PROCESS_PRIVATE Only threads created within the same pro- cess as the thread that initialized the read/write lock can manipulate the lock. This is the default value.
If successful, the pthread_rwlockattr_getpshared() function will return zero. Otherwise an error number will be returned to indicate the error.
pthread_rwlockattr_getpshared() may fail if: [EINVAL] The value specified by attr is invalid.
pthread_rwlock_init(3), pthread_rwlockattr_init(3), pthread_rwlockattr_setpshared(3)
The pthread_rwlockattr_getpshared() function is expected to conform to Version 2 of the Single UNIX Specification.
The pthread_rwlockattr_getpshared() function first appeared in FreeBSD 3.0 and OpenBSD 2.5. MirOS BSD #10-current March 22, 1999 1
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