---------------------
PatchSet 11241 
Date: 2007/02/05 22:10:33
Author: hno
Branch: HEAD
Tag: (none) 
Log:
Fix a timing issue in the AF_UNIX dgram socket test

due to some timing issues on systems where the test as such is unsuccessful
it could leave ./conftest processes behind.

Members: 
	configure.in:1.418->1.419 

Index: squid/configure.in
===================================================================
RCS file: /cvsroot/squid/squid/configure.in,v
retrieving revision 1.418
retrieving revision 1.419
diff -u -r1.418 -r1.419
--- squid/configure.in	3 Feb 2007 22:52:11 -0000	1.418
+++ squid/configure.in	5 Feb 2007 22:10:33 -0000	1.419
@@ -1,7 +1,7 @@
 dnl
 dnl  Configuration input file for Squid
 dnl
-dnl  $Id: configure.in,v 1.418 2007/02/03 22:52:11 hno Exp $
+dnl  $Id: configure.in,v 1.419 2007/02/05 22:10:33 hno Exp $
 dnl
 dnl
 dnl
@@ -10,7 +10,7 @@
 AM_CONFIG_HEADER(include/autoconf.h)
 AC_CONFIG_AUX_DIR(cfgaux)
 AM_INIT_AUTOMAKE
-AC_REVISION($Revision: 1.418 $)dnl
+AC_REVISION($Revision: 1.419 $)dnl
 AC_PREFIX_DEFAULT(/usr/local/squid)
 AM_MAINTAINER_MODE
 
@@ -2437,19 +2437,34 @@
   AC_TRY_RUN([
 #include <sys/types.h>
 #include <sys/socket.h>
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#else
+#include <sys/time.h>
+#endif
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 
 #define BUFSIZE 16384
-  void consumer(int s)
+  void consumer(int s, int p)
   {
+      fd_set fds;
       char buf[[BUFSIZE]];
       int len;
-      len = recv(s, buf, sizeof(buf), 0);
+      int nfds = p > s ? p + 1 : s + 1;
+      int rc;
+      FD_ZERO(&fds);
+      FD_SET(s, &fds);
+      FD_SET(p, &fds);
+      rc = select(nfds, &fds, NULL, NULL, NULL);
+      if (rc < 0)
+	    exit(1);
+      if (FD_ISSET(s, &fds))
+	  len = recv(s, buf, sizeof(buf), 0);
   }
 
-  void sender(int s)
+  void sender(int s, int p)
   {
       char buf[[BUFSIZE]];
       int len = sizeof(buf);
@@ -2467,8 +2482,10 @@
   int main(int argc, char **argv)
   {
       int s[[2]];
+      int p[[2]];
       pid_t pid;
       socketpair(AF_UNIX, SOCK_DGRAM, 0, s);
+      pipe(p);
       pid = fork();
       if (pid < 0) {
 	  perror("fork");
@@ -2476,10 +2493,12 @@
       }
       if (pid == 0) {
 	  close(s[[0]]);
-	  consumer(s[[1]]);
+	  close(p[[0]]);
+	  consumer(s[[1]],p[[1]]);
       } else {
 	  close(s[[1]]);
-	  sender(s[[0]]);
+	  close(p[[1]]);
+	  sender(s[[0]],p[[0]]);
       }
       return 0;
   }