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Fix to bug #549, http://bugs.skysql.com/show_bug.cgi?id=549

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Each monitor loops 10 times/second (sleep 100ms) and perform monitoring checks only when monitor's interval is spent. Monitors notice faster if the shutdown flag is set and thus overall shutdown is faster.
hint.c:added missing header
Changed interval from unsigned long to size_t which is guaranteed to be of same size also in windows (if possible).
This commit is contained in:
VilhoRaatikka
2014-09-23 11:26:15 +03:00
parent 503b942b5c
commit 45f8585804
8 changed files with 110 additions and 36 deletions
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36
server/modules/monitor/mysql_mon.c
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@ -80,7 +80,7 @@ static void registerServer(void *, SERVER *);
static void unregisterServer(void *, SERVER *);
static void defaultUser(void *, char *, char *);
static void diagnostics(DCB *, void *);
static void setInterval(void *, unsigned long);
static void setInterval(void *, size_t);
static void defaultId(void *, unsigned long);
static void replicationHeartbeat(void *, int);
static void detectStaleMaster(void *, int);
@ -95,7 +95,18 @@ static int add_slave_to_master(long *, int, long);
static void monitor_set_pending_status(MONITOR_SERVERS *, int);
static void monitor_clear_pending_status(MONITOR_SERVERS *, int);
static MONITOR_OBJECT MyObject = { startMonitor, stopMonitor, registerServer, unregisterServer, defaultUser, diagnostics, setInterval, defaultId, replicationHeartbeat, detectStaleMaster };
static MONITOR_OBJECT MyObject = {
startMonitor,
stopMonitor,
registerServer,
unregisterServer,
defaultUser,
diagnostics,
setInterval,
defaultId,
replicationHeartbeat,
detectStaleMaster
};
/**
* Implementation of the mandatory version entry point
@ -577,6 +588,7 @@ int replication_heartbeat = handle->replicationHeartbeat;
int detect_stale_master = handle->detectStaleMaster;
int num_servers=0;
MONITOR_SERVERS *root_master;
size_t nrounds = 0;
if (mysql_thread_init())
{
@ -586,8 +598,8 @@ MONITOR_SERVERS *root_master;
"module. Exiting.\n")));
return;
}
handle->status = MONITOR_RUNNING;
while (1)
{
if (handle->shutdown)
@ -597,6 +609,15 @@ MONITOR_SERVERS *root_master;
handle->status = MONITOR_STOPPED;
return;
}
/** Wait base interval */
thread_millisleep(MON_BASE_INTERVAL_MS);
nrounds += 1;
/** If monitor interval time isn't consumed skip checks */
if ((nrounds*MON_BASE_INTERVAL_MS)%handle->interval != 0)
{
continue;
}
/* reset num_servers */
num_servers = 0;
@ -686,10 +707,7 @@ MONITOR_SERVERS *root_master;
ptr = ptr->next;
}
}
/* wait for the configured interval */
thread_millisleep(handle->interval);
}
} /*< while (1) */
}
/**
@ -704,7 +722,7 @@ defaultId(void *arg, unsigned long id)
MYSQL_MONITOR *handle = (MYSQL_MONITOR *)arg;
memcpy(&handle->id, &id, sizeof(unsigned long));
}
/**
* Set the monitor sampling interval.
*
@ -712,7 +730,7 @@ MYSQL_MONITOR *handle = (MYSQL_MONITOR *)arg;
* @param interval The interval to set in monitor struct, in milliseconds
*/
static void
setInterval(void *arg, unsigned long interval)
setInterval(void *arg, size_t interval)
{
MYSQL_MONITOR *handle = (MYSQL_MONITOR *)arg;
memcpy(&handle->interval, &interval, sizeof(unsigned long));