mod_lbmethod_bybusyness.c revision 12b170a812f740fafc96da32a188a8b2761a3d5c
/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mod_proxy.h"
#include "scoreboard.h"
#include "ap_mpm.h"
#include "apr_version.h"
#include "ap_hooks.h"
request_rec *r)
{
int i;
int cur_lbset = 0;
int max_lbset = 0;
int checking_standby;
int checked_standby;
int total_factor = 0;
"proxy: Entering bybusyness for BALANCER (%s)",
/* First try to see if we have available candidate */
do {
checking_standby = checked_standby = 0;
while (!mycandidate && !checked_standby) {
if (!checking_standby) { /* first time through */
}
continue;
continue;
/* If the worker is in error state run
* retry on that worker. It will be marked as
* operational if the retry timeout is elapsed.
* The worker might still be unusable, but we try
* anyway.
*/
if (!PROXY_WORKER_IS_USABLE(*worker))
/* Take into calculation only the workers that are
* not in error state or not disabled.
*/
if (PROXY_WORKER_IS_USABLE(*worker)) {
if (!mycandidate
|| ((*worker)->s->busy == mycandidate->s->busy && (*worker)->s->lbstatus > mycandidate->s->lbstatus))
mycandidate = *worker;
}
}
}
cur_lbset++;
if (mycandidate) {
}
return mycandidate;
}
/* assumed to be mutex protected by caller */
int i;
}
return APR_SUCCESS;
}
return APR_SUCCESS;
}
static const proxy_balancer_method bybusyness =
{
"bybusyness",
NULL,
&reset,
&age
};
static void register_hook(apr_pool_t *p)
{
}
NULL, /* create per-directory config structure */
NULL, /* merge per-directory config structures */
NULL, /* create per-server config structure */
NULL, /* merge per-server config structures */
NULL, /* command apr_table_t */
register_hook /* register hooks */
};