PTHREADSETSPECIFIC(3) BSD Library Functions Manual PTHREADSETSPECIFIC(3)

NAME
     pptthhrreeaaddsseettssppeecciiffiicc - set a thread-specific data value

SYNOPSIS
     ##iinncclluuddee <>

     int
     pptthhrreeaaddsseettssppeecciiffiicc(pthreadkeyt key, const void *value);

DESCRIPTION
     The pptthhrreeaaddsseettssppeecciiffiicc() function associates a thread-specific value
     with a key obtained via a previous call to pptthhrreeaaddkkeeyyccrreeaattee().  Differ-
     ent threads man 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 pptthhrreeaaddsseettssppeecciiffiicc() with a key value not obtained
     from pptthhrreeaaddkkeeyyccrreeaattee() or after key has been deleted with
     pptthhrreeaaddkkeeyyddeelleettee() is undefined.

     pptthhrreeaaddsseettssppeecciiffiicc() may be called from a thread-specific data destruc-
     tor function, however this may result in lost storage or infinite loops.

RETURN VALUES
     If successful,  the pptthhrreeaaddsseettssppeecciiffiicc() function will return zero.
     Otherwise an error number will be returned to indicate the error.

EERRRROORRSS
     pptthhrreeaaddsseettssppeecciiffiicc() will fail if:

     [ENOMEM]           Insufficient memory exists to associate the value with
                        the key.

     [EINVAL]           The key value is invalid.

SEE ALSO
     pthreadgetspecific(3), pthreadkeycreate(3), pthreadkeydelete(3)

STANDARDS
     pptthhrreeaaddsseettssppeecciiffiicc() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').

BSD                              April 4, 1996                             BSD