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Fold in some stuff to allow for matching of workers

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to their actual scoreboard slots, independent of slot
ID.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@984188 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jim Jagielski
2010-08-10 19:46:58 +00:00
parent 10fc07caf8
commit c55a15fc2f
4 changed files with 75 additions and 14 deletions
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59
modules/proxy/proxy_util.c
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@@ -19,6 +19,7 @@
#include "ap_mpm.h"
#include "scoreboard.h"
#include "apr_version.h"
#include "apr_hash.h"
#if APR_HAVE_UNISTD_H
#include <unistd.h> /* for getpid() */
@@ -1335,6 +1336,7 @@ PROXY_DECLARE(const char *) ap_proxy_add_balancer(proxy_balancer **balancer,
(*balancer)->name = uri;
(*balancer)->lbmethod = lbmethod;
(*balancer)->workers = apr_array_make(p, 5, sizeof(proxy_worker *));
(*balancer)->updated = apr_time_now();
/* XXX Is this a right place to create mutex */
#if APR_HAS_THREADS
if (apr_thread_mutex_create(&((*balancer)->mutex),
@@ -1471,6 +1473,7 @@ PROXY_DECLARE(const char *) ap_proxy_add_worker_wid(proxy_worker **worker,
(*worker)->port = uri.port;
if (id < 0) {
(*worker)->id = proxy_lb_workers;
/* Increase the total worker count */
proxy_lb_workers++;
} else {
(*worker)->id = id;
@@ -1478,13 +1481,22 @@ PROXY_DECLARE(const char *) ap_proxy_add_worker_wid(proxy_worker **worker,
(*worker)->flush_packets = flush_off;
(*worker)->flush_wait = PROXY_FLUSH_WAIT;
(*worker)->smax = -1;
/* Increase the total worker count */
(*worker)->our_hash = ap_proxy_hashfunc((*worker)->name, PROXY_HASHFUNC_PROXY);
(*worker)->apr_hash = ap_proxy_hashfunc((*worker)->name, PROXY_HASHFUNC_APR);
(*worker)->cp = NULL;
(*worker)->mutex = NULL;
return NULL;
}
PROXY_DECLARE(const char *) ap_proxy_add_worker(proxy_worker **worker,
apr_pool_t *p,
proxy_server_conf *conf,
const char *url)
{
return ap_proxy_add_worker_wid(worker, p, conf, url, -1);
}
PROXY_DECLARE(proxy_worker *) ap_proxy_create_worker_wid(apr_pool_t *p, int id)
{
@@ -1504,6 +1516,11 @@ PROXY_DECLARE(proxy_worker *) ap_proxy_create_worker_wid(apr_pool_t *p, int id)
return worker;
}
PROXY_DECLARE(proxy_worker *) ap_proxy_create_worker(apr_pool_t *p)
{
return ap_proxy_create_worker_wid(p, -1);
}
PROXY_DECLARE(void)
ap_proxy_add_worker_to_balancer_wid(apr_pool_t *pool, proxy_balancer *balancer,
proxy_worker *worker, int id)
@@ -1519,22 +1536,10 @@ ap_proxy_add_worker_to_balancer_wid(apr_pool_t *pool, proxy_balancer *balancer,
} else {
(*runtime)->id = id;
}
balancer->updated = apr_time_now();
}
PROXY_DECLARE(const char *) ap_proxy_add_worker(proxy_worker **worker,
apr_pool_t *p,
proxy_server_conf *conf,
const char *url)
{
return ap_proxy_add_worker_wid(worker, p, conf, url, -1);
}
PROXY_DECLARE(proxy_worker *) ap_proxy_create_worker(apr_pool_t *p)
{
return ap_proxy_create_worker_wid(p, -1);
}
PROXY_DECLARE(void)
ap_proxy_add_worker_to_balancer(apr_pool_t *pool, proxy_balancer *balancer,
proxy_worker *worker)
@@ -1896,6 +1901,8 @@ PROXY_DECLARE(void) ap_proxy_initialize_worker_share(proxy_server_conf *conf,
}
worker->s->status |= (worker->status | PROXY_WORKER_INITIALIZED);
worker->s->apr_hash = worker->apr_hash;
worker->s->our_hash = worker->our_hash;
}
@@ -2744,3 +2751,27 @@ ap_proxy_buckets_lifetime_transform(request_rec *r, apr_bucket_brigade *from,
}
return rv;
}
/*
* Provide a string hashing function for the proxy.
* We offer 2 method: one is the APR model but we
* also provide our own, based on SDBM. The reason
* is in case we want to use both to ensure no
* collisions
*/
PROXY_DECLARE(unsigned int)
ap_proxy_hashfunc(const char *str, proxy_hash_t method)
{
if (method == PROXY_HASHFUNC_APR) {
apr_ssize_t slen = strlen(str);
return apr_hashfunc_default(str, &slen);
} else {
/* SDBM model */
unsigned int hash;
for(hash = 0; *str; str++) {
hash = (*str) + (hash << 6) + (hash << 16) - hash;
}
return hash;
}
}