summaryrefslogtreecommitdiff
path: root/srclib/apr-util/misc/apr_reslist.c
diff options
context:
space:
mode:
Diffstat (limited to 'srclib/apr-util/misc/apr_reslist.c')
-rw-r--r--srclib/apr-util/misc/apr_reslist.c76
1 files changed, 70 insertions, 6 deletions
diff --git a/srclib/apr-util/misc/apr_reslist.c b/srclib/apr-util/misc/apr_reslist.c
index ed2d15b7..0c43e074 100644
--- a/srclib/apr-util/misc/apr_reslist.c
+++ b/srclib/apr-util/misc/apr_reslist.c
@@ -24,8 +24,6 @@
#include "apr_thread_cond.h"
#include "apr_ring.h"
-#if APR_HAS_THREADS
-
/**
* A single resource element.
*/
@@ -56,8 +54,10 @@ struct apr_reslist_t {
void *params; /* opaque data passed to constructor and destructor calls */
apr_resring_t avail_list;
apr_resring_t free_list;
+#if APR_HAS_THREADS
apr_thread_mutex_t *listlock;
apr_thread_cond_t *avail;
+#endif
};
/**
@@ -141,7 +141,9 @@ static apr_status_t reslist_cleanup(void *data_)
apr_reslist_t *rl = data_;
apr_res_t *res;
+#if APR_HAS_THREADS
apr_thread_mutex_lock(rl->listlock);
+#endif
while (rl->nidle > 0) {
apr_status_t rv1;
@@ -158,9 +160,11 @@ static apr_status_t reslist_cleanup(void *data_)
assert(rl->nidle == 0);
assert(rl->ntotal == 0);
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(rl->listlock);
apr_thread_mutex_destroy(rl->listlock);
apr_thread_cond_destroy(rl->avail);
+#endif
return rv;
}
@@ -169,14 +173,16 @@ static apr_status_t reslist_cleanup(void *data_)
* Perform routine maintenance on the resource list. This call
* may instantiate new resources or expire old resources.
*/
-static apr_status_t reslist_maint(apr_reslist_t *reslist)
+APU_DECLARE(apr_status_t) apr_reslist_maintain(apr_reslist_t *reslist)
{
apr_time_t now;
apr_status_t rv;
apr_res_t *res;
int created_one = 0;
+#if APR_HAS_THREADS
apr_thread_mutex_lock(reslist->listlock);
+#endif
/* Check if we need to create more resources, and if we are allowed to. */
while (reslist->nidle < reslist->min && reslist->ntotal < reslist->hmax) {
@@ -184,7 +190,9 @@ static apr_status_t reslist_maint(apr_reslist_t *reslist)
rv = create_resource(reslist, &res);
if (rv != APR_SUCCESS) {
free_container(reslist, res);
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return rv;
}
/* Add it to the list */
@@ -192,17 +200,21 @@ static apr_status_t reslist_maint(apr_reslist_t *reslist)
/* Update our counters */
reslist->ntotal++;
/* If someone is waiting on that guy, wake them up. */
+#if APR_HAS_THREADS
rv = apr_thread_cond_signal(reslist->avail);
if (rv != APR_SUCCESS) {
apr_thread_mutex_unlock(reslist->listlock);
return rv;
}
+#endif
created_one++;
}
/* We don't need to see if we're over the max if we were under it before */
if (created_one) {
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return APR_SUCCESS;
}
@@ -223,12 +235,16 @@ static apr_status_t reslist_maint(apr_reslist_t *reslist)
rv = destroy_resource(reslist, res);
free_container(reslist, res);
if (rv != APR_SUCCESS) {
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return rv;
}
}
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return APR_SUCCESS;
}
@@ -250,6 +266,17 @@ APU_DECLARE(apr_status_t) apr_reslist_create(apr_reslist_t **reslist,
return APR_EINVAL;
}
+#if !APR_HAS_THREADS
+ /* There can be only one resource when we have no threads. */
+ if (min > 0) {
+ min = 1;
+ }
+ if (smax > 0) {
+ smax = 1;
+ }
+ hmax = 1;
+#endif
+
rl = apr_pcalloc(pool, sizeof(*rl));
rl->pool = pool;
rl->min = min;
@@ -263,6 +290,7 @@ APU_DECLARE(apr_status_t) apr_reslist_create(apr_reslist_t **reslist,
APR_RING_INIT(&rl->avail_list, apr_res_t, link);
APR_RING_INIT(&rl->free_list, apr_res_t, link);
+#if APR_HAS_THREADS
rv = apr_thread_mutex_create(&rl->listlock, APR_THREAD_MUTEX_DEFAULT,
pool);
if (rv != APR_SUCCESS) {
@@ -272,8 +300,9 @@ APU_DECLARE(apr_status_t) apr_reslist_create(apr_reslist_t **reslist,
if (rv != APR_SUCCESS) {
return rv;
}
+#endif
- rv = reslist_maint(rl);
+ rv = apr_reslist_maintain(rl);
if (rv != APR_SUCCESS) {
/* Destroy what we've created so far.
*/
@@ -301,7 +330,9 @@ APU_DECLARE(apr_status_t) apr_reslist_acquire(apr_reslist_t *reslist,
apr_res_t *res;
apr_time_t now;
+#if APR_HAS_THREADS
apr_thread_mutex_lock(reslist->listlock);
+#endif
/* If there are idle resources on the available list, use
* them right away. */
now = apr_time_now();
@@ -314,19 +345,24 @@ APU_DECLARE(apr_status_t) apr_reslist_acquire(apr_reslist_t *reslist,
rv = destroy_resource(reslist, res);
free_container(reslist, res);
if (rv != APR_SUCCESS) {
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return rv; /* FIXME: this might cause unnecessary fails */
}
continue;
}
*resource = res->opaque;
free_container(reslist, res);
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return APR_SUCCESS;
}
/* If we've hit our max, block until we're allowed to create
* a new one, or something becomes free. */
while (reslist->ntotal >= reslist->hmax && reslist->nidle <= 0) {
+#if APR_HAS_THREADS
if (reslist->timeout) {
if ((rv = apr_thread_cond_timedwait(reslist->avail,
reslist->listlock, reslist->timeout)) != APR_SUCCESS) {
@@ -337,6 +373,9 @@ APU_DECLARE(apr_status_t) apr_reslist_acquire(apr_reslist_t *reslist,
else {
apr_thread_cond_wait(reslist->avail, reslist->listlock);
}
+#else
+ return APR_EAGAIN;
+#endif
}
/* If we popped out of the loop, first try to see if there
* are new resources available for immediate use. */
@@ -344,7 +383,9 @@ APU_DECLARE(apr_status_t) apr_reslist_acquire(apr_reslist_t *reslist,
res = pop_resource(reslist);
*resource = res->opaque;
free_container(reslist, res);
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return APR_SUCCESS;
}
/* Otherwise the reason we dropped out of the loop
@@ -357,7 +398,9 @@ APU_DECLARE(apr_status_t) apr_reslist_acquire(apr_reslist_t *reslist,
*resource = res->opaque;
}
free_container(reslist, res);
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return rv;
}
}
@@ -367,14 +410,18 @@ APU_DECLARE(apr_status_t) apr_reslist_release(apr_reslist_t *reslist,
{
apr_res_t *res;
+#if APR_HAS_THREADS
apr_thread_mutex_lock(reslist->listlock);
+#endif
res = get_container(reslist);
res->opaque = resource;
push_resource(reslist, res);
+#if APR_HAS_THREADS
apr_thread_cond_signal(reslist->avail);
apr_thread_mutex_unlock(reslist->listlock);
+#endif
- return reslist_maint(reslist);
+ return apr_reslist_maintain(reslist);
}
APU_DECLARE(void) apr_reslist_timeout_set(apr_reslist_t *reslist,
@@ -387,9 +434,13 @@ APU_DECLARE(apr_uint32_t) apr_reslist_acquired_count(apr_reslist_t *reslist)
{
apr_uint32_t count;
+#if APR_HAS_THREADS
apr_thread_mutex_lock(reslist->listlock);
+#endif
count = reslist->ntotal - reslist->nidle;
+#if APR_HAS_THREADS
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return count;
}
@@ -398,12 +449,25 @@ APU_DECLARE(apr_status_t) apr_reslist_invalidate(apr_reslist_t *reslist,
void *resource)
{
apr_status_t ret;
+#if APR_HAS_THREADS
apr_thread_mutex_lock(reslist->listlock);
+#endif
ret = reslist->destructor(resource, reslist->params, reslist->pool);
reslist->ntotal--;
+#if APR_HAS_THREADS
apr_thread_cond_signal(reslist->avail);
apr_thread_mutex_unlock(reslist->listlock);
+#endif
return ret;
}
-#endif /* APR_HAS_THREADS */
+APU_DECLARE(void) apr_reslist_cleanup_order_set(apr_reslist_t *rl,
+ apr_uint32_t mode)
+{
+ apr_pool_cleanup_kill(rl->pool, rl, reslist_cleanup);
+ if (mode == APR_RESLIST_CLEANUP_FIRST)
+ apr_pool_pre_cleanup_register(rl->pool, rl, reslist_cleanup);
+ else
+ apr_pool_cleanup_register(rl->pool, rl, reslist_cleanup,
+ apr_pool_cleanup_null);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 13:18:25 +0000