In isolationtester, retry after EINTR return from select(2).

tglsfdc · tglsfdc · commit faf4726c9fd5 · 2013-04-06T22:28:49.000-04:00
Per report from Jaime Casanova.  Very curious that no one else has seen
this failure ... but the code is clearly wrong as-is.
diff --git a/src/test/isolation/isolationtester.c b/src/test/isolation/isolationtester.c
@@ -716,6 +716,8 @@ try_complete_step(Step * step, int flags)
 		ret = select(sock + 1, &read_set, NULL, NULL, &timeout);
 		if (ret < 0)			/* error in select() */
 		{
+			if (errno == EINTR)
+				continue;
 			fprintf(stderr, "select failed: %s\n", strerror(errno));
 			exit_nicely();
 		}

Original file line number	Diff line number	Diff line change
`@@ -716,6 +716,8 @@ try_complete_step(Step * step, int flags)`
`716`	`716`	`ret = select(sock + 1, &read_set, NULL, NULL, &timeout);`
`717`	`717`	`if (ret < 0) /* error in select() */`
`718`	`718`	`{`
	`719`	`+ if (errno == EINTR)`
	`720`	`+ continue;`
`719`	`721`	`fprintf(stderr, "select failed: %s\n", strerror(errno));`
`720`	`722`	`exit_nicely();`
`721`	`723`	`}`