[PATCH 1/2] Don't hang in wait if suspended/resumed

[spitzak at gmail.com]

From: Bill Spitzak <spitzak at lulu.(none)>

Pausing weston (with ^Z in the shell) and putting it in the background
made it hang.

It actually never called sigchld when I killed or made clients exit,
so it is not clear if this handler is needed at all.
---
 src/compositor.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/compositor.c b/src/compositor.c
index f2ae2f6..914c6c9 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -59,7 +59,9 @@ sigchld_handler(int signal_number, void *data)
 	int status;
 	pid_t pid;
 
-	pid = wait(&status);
+	pid = waitpid(-1, &status, WNOHANG);
+	if (!pid) return 1;
+
 	wl_list_for_each(p, &child_process_list, link) {
 		if (p->pid == pid)
 			break;
-- 
1.7.4.1