apr_status_t h2_mplx_release_and_join(h2_mplx *m, apr_thread_cond_t *wait)
{
apr_status_t status;
int acquired;
h2_workers_unregister(m->workers, m);
if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) {
int i, wait_secs = 5;
/* disable WINDOW_UPDATE callbacks */
h2_mplx_set_consumed_cb(m, NULL, NULL);
while (!h2_io_set_iter(m->stream_ios, stream_done_iter, m)) {
/* iterate until all ios have been orphaned or destroyed */
}
/* Any remaining ios have handed out requests to workers that are
* not done yet. Any operation they do on their assigned stream ios will
* be errored ECONNRESET/ABORTED, so that should find out pretty soon.
*/
for (i = 0; h2_io_set_size(m->stream_ios) > 0; ++i) {
m->join_wait = wait;
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c,
"h2_mplx(%ld): release_join, waiting on %d worker to report back",
m->id, (int)h2_io_set_size(m->stream_ios));
status = apr_thread_cond_timedwait(wait, m->lock, apr_time_from_sec(wait_secs));
if (APR_STATUS_IS_TIMEUP(status)) {
if (i > 0) {
/* Oh, oh. Still we wait for assigned workers to report that
* they are done. Unless we have a bug, a worker seems to be hanging.
* If we exit now, all will be deallocated and the worker, once
* it does return, will walk all over freed memory...
*/
ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c,
"h2_mplx(%ld): release, waiting for %d seconds now for "
"all h2_workers to return, have still %d requests outstanding",
m->id, i*wait_secs, (int)h2_io_set_size(m->stream_ios));
}
}
}
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c,
"h2_mplx(%ld): release_join -> destroy", m->id);
leave_mutex(m, acquired);
h2_mplx_destroy(m);
/* all gone */
}
return status;
}
static void workers_unregister(h2_mplx *m) {
h2_workers_unregister(m->workers, m);
}
