pthread_rwlockattr_setpshared - set the process shared attribute
#include <pthread.h> int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared);
The pthread_rwlockattr_setpshared() function sets the process shared at- tribute of attr to the value referenced by pshared. pshared 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_setpshared() function will return zero. Otherwise an error number will be returned to indicate the error.
pthread_rwlockattr_setpshared() will fail if: [EINVAL] The value specified by attr or pshared is invalid.
The pthread_rwlockattr_setpshared() function is expected to conform to Version 2 of the Single UNIX Specification.
The pthread_rwlockattr_setpshared() function first appeared in FreeBSD 3.0 and OpenBSD 2.5.
The PTHREAD_PROCESS_SHARED attribute is not supported. MirOS BSD #10-current August 4, 1998 1
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