pthread_setspecific
- set a thread-specific data value
LIBRARY
Lb libpthread
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
Fa key
obtained via a previous call to
pthread_key_create (.);
Different threads can 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
Fa key
has been deleted with
pthread_key_delete ();
is undefined.
The
pthread_setspecific ();
function 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.
ERRORS
The
pthread_setspecific ();
function will fail if:
Bq Er ENOMEM
Insufficient memory exists to associate the value with the
Fa key .
