freebsd man page for rfork_thread

RFORK_THREAD(3) 					   BSD Library Functions Manual 					   RFORK_THREAD(3)

NAME
     rfork_thread -- create a rfork-based process thread

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     pid_t
     rfork_thread(int flags, void *stack, int (*func)(void *arg), void *arg);

DESCRIPTION
     The rfork_thread() function has been deprecated in favor of pthread_create(3).

     The rfork_thread() function is a helper function for rfork(2).  It arranges for a new process to be created and the child process will call
     the specified function with the specified argument, while running on the supplied stack.

     Using this function should avoid the need to implement complex stack swap code.

RETURN VALUES
     Upon successful completion, rfork_thread() returns the process ID of the child process to the parent process.  Otherwise, a value of -1 is
     returned to the parent process, no child process is created, and the global variable errno is set to indicate the error.

     The child process context is not aware of a return from the rfork_thread() function as it begins executing directly with the supplied func-
     tion.

ERRORS
     See rfork(2) for error return codes.

SEE ALSO
     fork(2), intro(2), minherit(2), rfork(2), vfork(2), pthread_create(3)

HISTORY
     The rfork_thread() function first appeared in FreeBSD 4.3.

BSD
								 February 6, 2011							       BSD