Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
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$FreeBSD: releng/10.2/lib/libc/gen/rfork_thread.3 218385 2011-02-06 23:26:14Z jilles $
.Dd February 6, 2011 .Dt RFORK_THREAD 3 .Os .Sh NAME .Nm rfork_thread .Nd create a rfork-based process thread .Sh LIBRARY .Lb libc .Sh SYNOPSIS n unistd.h .Ft pid_t .Fn rfork_thread "int flags" "void *stack" "int (*func)(void *arg)" "void *arg" .Sh DESCRIPTION f -symbolic The .Fn rfork_thread function has been deprecated in favor of .Xr pthread_create 3 . .Ef
p The .Fn rfork_thread function is a helper function for .Xr 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.
p Using this function should avoid the need to implement complex stack swap code. .Sh RETURN VALUES Upon successful completion, .Fn 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 .Va errno is set to indicate the error.
p The child process context is not aware of a return from the .Fn rfork_thread function as it begins executing directly with the supplied function. .Sh ERRORS See .Xr rfork 2 for error return codes. .Sh SEE ALSO .Xr fork 2 , .Xr intro 2 , .Xr minherit 2 , .Xr rfork 2 , .Xr vfork 2 , .Xr pthread_create 3 .Sh HISTORY The .Fn rfork_thread function first appeared in .Fx 4.3 .