PTHREADATFORK(3) BSD Library Functions Manual PTHREADATFORK(3)

NAME
     pptthhrreeaaddaattffoorrkk - register handlers to be called before and after ffoorrkk()

SYNOPSIS
     ##iinncclluuddee <>

     int
     pptthhrreeaaddaattffoorrkk(void (*prepare)(void), void (*parent)(void),
         void (*child)(void));

DESCRIPTION
     The pptthhrreeaaddaattffoorrkk() function is used to register functions to be called
     before and after ffoorrkk() The prepare handler is called before ffoorrkk() ,
     while the parent and child handlers are called after ffoorrkk() in the parent
     and child process, respectively.  prepare handlers are called in reverse
     order of their registration, while parent and child handlers are called
     in the order in which they were registered. Any of the handlers may be
     NULL.

     Remember: only async-cancel-safe functions are allowed on the child side
     of ffoorrkk()

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

EERRRROORRSS
     pptthhrreeaaddaattffoorrkk() will fail if:

     [ENOMEM]           The system lacked the necessary resources to add
                        another handler to the list.

SEE ALSO
     fork(2)

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

BSD                             August 12, 2004                            BSD