chg: make timeout adjustable
Before this patch, chg will give up when it cannot connect to the new server
within 10 seconds. If the host has high load during that time, 10 seconds
is not enough.
This patch makes it adjustable using the CHGTIMEOUT environment variable.
--- a/contrib/chg/README Sat Jun 11 20:25:49 2016 +0100
+++ b/contrib/chg/README Mon Jun 13 21:30:14 2016 +0100
@@ -28,3 +28,5 @@
* CHGDEBUG enables debug messages.
* CHGSOCKNAME specifies the socket path of the background cmdserver.
+ * CHGTIMEOUT specifies how many seconds chg will wait before giving up
+ connecting to a cmdserver. If it is 0, chg will wait forever. Default: 10
--- a/contrib/chg/chg.c Sat Jun 11 20:25:49 2016 +0100
+++ b/contrib/chg/chg.c Mon Jun 13 21:30:14 2016 +0100
@@ -249,7 +249,13 @@
int pst = 0;
debugmsg("try connect to %s repeatedly", opts->sockname);
- for (unsigned int i = 0; i < 10 * 100; i++) {
+
+ unsigned int timeoutsec = 10; /* default: 10 seconds */
+ const char *timeoutenv = getenv("CHGTIMEOUT");
+ if (timeoutenv)
+ sscanf(timeoutenv, "%u", &timeoutsec);
+
+ for (unsigned int i = 0; !timeoutsec || i < timeoutsec * 100; i++) {
hgclient_t *hgc = hgc_open(opts->sockname);
if (hgc)
return hgc;