From 2041deb6da8825095e007cd5638abd6ffc4f3a4e Mon Sep 17 00:00:00 2001
From: Peter Wu <lekensteyn@gmail.com>
Date: Thu, 9 Jan 2014 11:08:19 +0100
Subject: prefork: Fix 100% CPU usage in parent process

When a child process is terminated, the parent calls waitpid() to check
for dead children. This returns -1 on error (e.g. there are no other
children or a signal interrupted waitpid()), the pid (> 0) for dead
children OR 0 if there are some children which are still alive.

Fixes gnosek/fcgiwrap#18.
---
 fcgiwrap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'fcgiwrap.c')

diff --git a/fcgiwrap.c b/fcgiwrap.c
index e86ff9d..d4f7901 100644
--- a/fcgiwrap.c
+++ b/fcgiwrap.c
@@ -623,7 +623,7 @@ static void sigchld_handler(int dummy)
 {
 	int status;
 
-	while ((dummy = waitpid(-1, &status, WNOHANG)) != -1) {
+	while ((dummy = waitpid(-1, &status, WNOHANG)) > 0) {
 		/* sanity check */
 		if (nrunning > 0)
 			nrunning--;
-- 
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