PTHREAD_SETSPECIFIC(3) OpenBSD Programmer's Manual PTHREAD_SETSPECIFIC(3)NAMEpthread_setspecific - set a thread-specific data value
SYNOPSIS
#include <pthread.h>
int
pthread_setspecific(pthread_key_t key, const void *value);
DESCRIPTION
The pthread_setspecific() function associates a thread-specific value
with a key obtained via a previous call to pthread_key_create().
Different threads may bind different values to the same key. These values
are typically pointers to blocks of dynamically allocated memory that
have been reserved for use by the calling thread.
The effect of calling pthread_setspecific() with a key value not obtained
from pthread_key_create() or after key has been deleted with
pthread_key_delete() is undefined.
pthread_setspecific() may be called from a thread-specific data
destructor function; however, this may result in lost storage or infinite
loops.
RETURN VALUES
If successful, the pthread_setspecific() function will return zero.
Otherwise an error number will be returned to indicate the error.
ERRORSpthread_setspecific() will fail if:
[ENOMEM] Insufficient memory exists to associate the value with the
key.
[EINVAL] The key value is invalid.
SEE ALSOpthread_getspecific(3), pthread_key_create(3), pthread_key_delete(3)STANDARDSpthread_setspecific() conforms to ISO/IEC 9945-1:1996 (``POSIX'').
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
