static void end_gen(mpm_gen_info_t *gi)
{
ap_log_error(APLOG_MARK, APLOG_TRACE4, 0, ap_server_conf,
"end of generation %d", gi->gen);
ap_run_end_generation(ap_server_conf, gi->gen);
APR_RING_REMOVE(gi, link);
APR_RING_INSERT_HEAD(unused_geninfo, gi, mpm_gen_info_t, link);
}
static APR_INLINE apt_bool_t mpf_timer_insert(mpf_timer_manager_t *manager, mpf_timer_t *timer)
{
mpf_timer_t *it;
for(it = APR_RING_LAST(&manager->head);
it != APR_RING_SENTINEL(&manager->head, mpf_timer_t, link);
it = APR_RING_PREV(it, link)) {
if(it->scheduled_time <= timer->scheduled_time) {
APR_RING_INSERT_AFTER(it,timer,link);
return TRUE;
}
}
APR_RING_INSERT_HEAD(&manager->head,timer,mpf_timer_t,link);
return TRUE;
}
static APR_INLINE apt_bool_t apt_timer_insert(apt_timer_queue_t *timer_queue, apt_timer_t *timer)
{
apt_timer_t *it;
for(it = APR_RING_LAST(&timer_queue->head);
it != APR_RING_SENTINEL(&timer_queue->head, apt_timer_t, link);
it = APR_RING_PREV(it, link)) {
if(it->scheduled_time <= timer->scheduled_time) {
APR_RING_INSERT_AFTER(it,timer,link);
return TRUE;
}
}
APR_RING_INSERT_HEAD(&timer_queue->head,timer,apt_timer_t,link);
return TRUE;
}
/* core's child-status hook
* tracks number of remaining children per generation and
* runs the end-generation hook when the last child of
* a generation exits
*/
void ap_core_child_status(server_rec *s, pid_t pid,
ap_generation_t gen, int slot,
mpm_child_status status)
{
mpm_gen_info_t *cur;
const char *status_msg = "unknown status";
if (!gen_head_init) { /* where to run this? */
gen_head_init = 1;
geninfo = apr_pcalloc(s->process->pool, sizeof *geninfo);
unused_geninfo = apr_pcalloc(s->process->pool, sizeof *unused_geninfo);
APR_RING_INIT(geninfo, mpm_gen_info_t, link);
APR_RING_INIT(unused_geninfo, mpm_gen_info_t, link);
}
cur = APR_RING_FIRST(geninfo);
while (cur != APR_RING_SENTINEL(geninfo, mpm_gen_info_t, link) &&
cur->gen != gen) {
cur = APR_RING_NEXT(cur, link);
}
switch(status) {
case MPM_CHILD_STARTED:
status_msg = "started";
if (cur == APR_RING_SENTINEL(geninfo, mpm_gen_info_t, link)) {
/* first child for this generation */
if (!APR_RING_EMPTY(unused_geninfo, mpm_gen_info_t, link)) {
cur = APR_RING_FIRST(unused_geninfo);
APR_RING_REMOVE(cur, link);
cur->active = cur->done = 0;
}
else {
cur = apr_pcalloc(s->process->pool, sizeof *cur);
}
cur->gen = gen;
APR_RING_ELEM_INIT(cur, link);
APR_RING_INSERT_HEAD(geninfo, cur, mpm_gen_info_t, link);
}
ap_random_parent_after_fork();
++cur->active;
break;
case MPM_CHILD_EXITED:
ap_update_global_status();
status_msg = "exited";
if (cur == APR_RING_SENTINEL(geninfo, mpm_gen_info_t, link)) {
ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(00546)
"no record of generation %d of exiting child %" APR_PID_T_FMT,
gen, pid);
}
else {
--cur->active;
if (!cur->active && cur->done) { /* no children, server has stopped/restarted */
end_gen(cur);
}
}
break;
case MPM_CHILD_LOST_SLOT:
status_msg = "lost slot";
/* we don't track by slot, so it doesn't matter */
break;
}
ap_log_error(APLOG_MARK, APLOG_TRACE4, 0, s,
"mpm child %" APR_PID_T_FMT " (gen %d/slot %d) %s",
pid, gen, slot, status_msg);
}
/**
* Add a resource to the beginning of the list, set the time at which
* it was added to the list.
* Assumes: that the reslist is locked.
*/
static void push_resource(apr_reslist_t *reslist, apr_res_t *resource)
{
APR_RING_INSERT_HEAD(&reslist->avail_list, resource, apr_res_t, link);
resource->freed = apr_time_now();
reslist->nidle++;
}
