From 9b73fa0b88684652935aae9edfadd2fd309b0ace Mon Sep 17 00:00:00 2001 From: Sam Steingold Date: Sun, 11 Mar 2007 21:08:45 +0000 Subject: [PATCH] tweak last patch: add comment and avoid the first sleep --- src/process.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/src/process.c b/src/process.c index 0fbbd5d34c3..975d92f36f1 100644 --- a/src/process.c +++ b/src/process.c @@ -6495,13 +6495,16 @@ sigchld_handler (signo) #define WUNTRACED 0 #endif /* no WUNTRACED */ /* Keep trying to get a status until we get a definitive result. */ - do - { - sleep (1); - errno = 0; - pid = wait3 (&w, WNOHANG | WUNTRACED, 0); - } - while (pid < 0 && errno == EINTR); + while (1) { + errno = 0; + pid = wait3 (&w, WNOHANG | WUNTRACED, 0); + if (! (pid < 0 && errno == EINTR)) + break; + /* avoid a busyloop: wait3 is a system call, so we do not want + to prevent the kernel from actually sending SIGCHLD to emacs + by asking for it all the time */ + sleep (1); + } if (pid <= 0) { -- 2.39.5