From feaa89c410544775afc19eac4a966e8345d5134a Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Mon, 23 Mar 1998 04:14:21 +0000
Subject: [PATCH] for systems with a broken select use u_sleep() to ensure the
 write process doesn't chew too much cpu time.

---
 io.c   |  1 +
 util.c | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/io.c b/io.c
index e8e1ceb2..54ceb281 100644
--- a/io.c
+++ b/io.c
@@ -234,6 +234,7 @@ static int writefd(int fd,char *buf,int len)
 	    /* hmmm, we got a write select on the fd and then failed to write.
 	       Why doesn't that mean that the fd is dead? It doesn't on some
 	       systems it seems (eg. IRIX) */
+	    u_sleep(1000);
 #if 0
 	    fprintf(FERROR,"write exception\n");
 	    exit_cleanup(1);
diff --git a/util.c b/util.c
index 2a479458..927aa996 100644
--- a/util.c
+++ b/util.c
@@ -82,9 +82,9 @@ char *map_ptr(struct map_struct *map,off_t offset,int len)
 
   if (lseek(map->fd,offset,SEEK_SET) != offset ||
       (nread=read(map->fd,map->p,len)) != len) {
-    fprintf(FERROR,"EOF in map_ptr! (offset=%d len=%d nread=%d errno=%d)\n",
-	    (int)offset, len, nread, errno);
-    exit_cleanup(1);
+	  fprintf(FERROR,"EOF in map_ptr! (offset=%d len=%d nread=%d errno=%d)\n",
+		  (int)offset, len, nread, errno);
+	  exit_cleanup(1);
   }
 
   map->p_offset = offset;
@@ -342,3 +342,13 @@ int copy_file(char *source, char *dest, mode_t mode)
 
 	return 0;
 }
+
+/* sleep for a while via select */
+void u_sleep(int usec)
+{
+	struct timeval tv;
+
+	tv.tv_sec = 0;
+	tv.tv_usec = usec;
+	select(0, NULL, NULL, NULL, &tv);
+}
-- 
2.34.1