On Wed, Nov 08, 2000 at 09:52:07AM +0100, Raphael Quinet wrote: > Included below is a small test program that checks how the OS behaves > when a child process exits while the parent is blocking on waitpid() > and has a SIGCHLD handler installed (which also calls waitpid, and > thus could steal the status if the signal handler is called before > the first waitpid returns). ignatios@theory 14 % ./waittest.sol2.6.gcc installing signal handler... forking... waiting for child 419 to exit... child 419 has exited sig_pid = 419 sig_status = 25600 main_pid = -1 main_status = 9999 sigchld handler was called before waitpid (no status) Oops, you knew this already, I guess. SunOS4.1.4 with cc deosn't compile it at all. with gcc: waittest.c:28: `SA_RESTART' undeclared (first use this function) and I have to read manuals to find out what to do about it. -is -- * Progress (n.): The process through which Usenet has evolved from smart people in front of dumb terminals to dumb people in front of smart terminals. -- obs@xxxxxxxxxxxxxxxxxxx (obscurity)
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