From: Jaroslav Kysela <perex@perex.cz>
Date: Thu, 18 Aug 2005 10:42:22 +0000 (+0000)
Subject: PCM direct plugins - handle EINTR in the resource server
X-Git-Tag: v1.0.10rc1~3
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=f1acd7726ca314c20566a0a436786dc5f3f94f3c;p=alsa-lib.git

PCM direct plugins - handle EINTR in the resource server

The poll() call in the resource server for PCM direct plugins might be
interrupted with an signal. Handle the case gracefuly and don't exit
the server (which brings another problems - cannot connect to socket -
later).
---

diff --git a/src/pcm/pcm_direct.c b/src/pcm/pcm_direct.c
index 8ce406bd..8d70e52b 100644
--- a/src/pcm/pcm_direct.c
+++ b/src/pcm/pcm_direct.c
@@ -288,9 +288,13 @@ static void server_job(snd_pcm_direct_t *dmix)
 	server_printf("DIRECT SERVER STARTED\n");
 	while (1) {
 		ret = poll(pfds, current + 1, 500);
-		server_printf("DIRECT SERVER: poll ret = %i, revents[0] = 0x%x\n", ret, pfds[0].revents);
-		if (ret < 0)	/* some error */
+		server_printf("DIRECT SERVER: poll ret = %i, revents[0] = 0x%x, errno = %i\n", ret, pfds[0].revents, errno);
+		if (ret < 0) {
+			if (errno == EINTR)
+				continue;
+			/* some error */
 			break;
+		}
 		if (ret == 0 || (pfds[0].revents & (POLLERR | POLLHUP))) {	/* timeout or error? */
 			struct shmid_ds buf;
 			snd_pcm_direct_semaphore_down(dmix, DIRECT_IPC_SEM_CLIENT);