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Use our own memory pool instead of the sessions 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@14652 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Andrew Thompson 2009-08-27 21:41:47 +00:00
parent 8a753a4f42
commit fc208bb0b9
2 changed files with 89 additions and 41 deletions
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128
src/mod/event_handlers/mod_erlang_event/mod_erlang_event.c
View File

@ -42,6 +42,7 @@ SWITCH_MODULE_RUNTIME_FUNCTION(mod_erlang_event_runtime);
SWITCH_MODULE_DEFINITION(mod_erlang_event, mod_erlang_event_load, mod_erlang_event_shutdown, mod_erlang_event_runtime);
static void remove_listener(listener_t *listener);
static switch_status_t state_handler(switch_core_session_t *session);
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_pref_ip, prefs.ip);
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_pref_cookie, prefs.cookie);
@ -147,7 +148,7 @@ static void send_event_to_attached_sessions(listener_t* listener, switch_event_t
for (s = listener->session_list; s; s = s->next) {
/* check the event uuid against the uuid of each session */
if (!strcmp(uuid, s->uuid_str)) {
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(s->uuid_str), SWITCH_LOG_DEBUG, "Sending event to attached session for %s\n", s->uuid_str);
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(s->uuid_str), SWITCH_LOG_DEBUG, "Sending event %s to attached session for %s\n", switch_event_name(event->event_id), s->uuid_str);
if (switch_event_dup(&clone, event) == SWITCH_STATUS_SUCCESS) {
/* add the event to the queue for this session */
if (switch_queue_trypush(s->event_queue, clone) != SWITCH_STATUS_SUCCESS) {
@ -312,7 +313,6 @@ static void add_session_elem_to_listener(listener_t *listener, session_elem_t *s
static void remove_session_elem_from_listener(listener_t *listener, session_elem_t *session_element)
{
session_elem_t *s, *last = NULL;
switch_core_session_t *session;
if (!session_element)
return;
@ -325,19 +325,25 @@ static void remove_session_elem_from_listener(listener_t *listener, session_elem
} else {
listener->session_list = s->next;
}
if ((session = switch_core_session_locate(session_element->uuid_str))) {
switch_channel_clear_flag(switch_core_session_get_channel(session), CF_CONTROLLED);
switch_core_session_rwunlock(session);
}
/* this allows the application threads to exit */
switch_clear_flag_locked(s, LFLAG_SESSION_ALIVE);
switch_safe_free(s);
break;
}
last = s;
}
}
static void destroy_session_elem(session_elem_t *session_element)
{
switch_core_session_t *session;
if ((session = switch_core_session_locate(session_element->uuid_str))) {
switch_channel_clear_flag(switch_core_session_get_channel(session), CF_CONTROLLED);
switch_core_session_rwunlock(session);
}
/* this allows the application threads to exit */
switch_clear_flag_locked(session_element, LFLAG_SESSION_ALIVE);
switch_core_destroy_memory_pool(&session_element->pool);
/*switch_safe_free(s);*/
}
static void remove_session_elem_from_listener_locked(listener_t *listener, session_elem_t *session_element) {
switch_mutex_lock(listener->session_mutex);
@ -537,9 +543,52 @@ static switch_status_t check_attached_sessions(listener_t *listener)
}
switch_set_flag(sp, LFLAG_OUTBOUND_INIT);
}
/* check event queue for this session */
if (switch_queue_trypop(sp->event_queue, &pop) == SWITCH_STATUS_SUCCESS) {
if (switch_test_flag(sp, LFLAG_SESSION_COMPLETE)) {
ei_x_buff ebuf;
/* flush the event queue */
while (switch_queue_trypop(sp->event_queue, &pop) == SWITCH_STATUS_SUCCESS) {
switch_event_t *pevent = (switch_event_t *) pop;
/*switch_log_printf(SWITCH_CHANNEL_UUID_LOG(sp->uuid_str), SWITCH_LOG_DEBUG, "flushed event %s for %s\n", switch_event_name(pevent->event_id), sp->uuid_str);*/
/* events from attached sessions are wrapped in a {call_event,<EVT>} tuple
to distinguish them from normal events (if they are sent to the same process)
*/
ei_x_new_with_version(&ebuf);
ei_x_encode_tuple_header(&ebuf, 2);
ei_x_encode_atom(&ebuf, "call_event");
ei_encode_switch_event(&ebuf, pevent);
switch_mutex_lock(listener->sock_mutex);
ei_sendto(listener->ec, listener->sockfd, &sp->process, &ebuf);
switch_mutex_unlock(listener->sock_mutex);
ei_x_free(&ebuf);
switch_event_destroy(&pevent);
}
/* this session can be removed */
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(sp->uuid_str), SWITCH_LOG_DEBUG, "Destroy event for attached session for %s in state %s\n", sp->uuid_str, switch_channel_state_name(sp->channel_state));
ei_x_new_with_version(&ebuf);
ei_x_encode_atom(&ebuf, "call_hangup");
switch_mutex_lock(listener->sock_mutex);
ei_sendto(listener->ec, listener->sockfd, &sp->process, &ebuf);
switch_mutex_unlock(listener->sock_mutex);
ei_x_free(&ebuf);
removed = sp;
sp = removed->next;
remove_session_elem_from_listener(listener, removed);
destroy_session_elem(removed);
continue;
} else if (switch_queue_trypop(sp->event_queue, &pop) == SWITCH_STATUS_SUCCESS) {
/* check event queue for this session */
switch_event_t *pevent = (switch_event_t *) pop;
/*switch_log_printf(SWITCH_CHANNEL_UUID_LOG(sp->uuid_str), SWITCH_LOG_DEBUG, "popped event %s for %s\n", switch_event_name(pevent->event_id), sp->uuid_str);*/
/* events from attached sessions are wrapped in a {call_event,<EVT>} tuple
to distinguish them from normal events (if they are sent to the same process)
@ -556,33 +605,9 @@ static switch_status_t check_attached_sessions(listener_t *listener)
switch_mutex_unlock(listener->sock_mutex);
ei_x_free(&ebuf);
/* event is a channel destroy, so this session can be removed */
if (pevent->event_id == SWITCH_EVENT_CHANNEL_DESTROY) {
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(sp->uuid_str), SWITCH_LOG_DEBUG, "Destroy event for attached session for %s in state %s\n", sp->uuid_str, switch_channel_state_name(sp->channel_state));
/* this allows the application threads to exit */
removed = sp;
ei_x_new_with_version(&ebuf);
ei_x_encode_atom(&ebuf, "call_hangup");
switch_mutex_lock(listener->sock_mutex);
ei_sendto(listener->ec, listener->sockfd, &sp->process, &ebuf);
switch_mutex_unlock(listener->sock_mutex);
ei_x_free(&ebuf);
/* TODO
if this listener was created outbound, and the last session has been detached
should the listener also exit? Does it matter?
*/
}
switch_event_destroy(&pevent);
}
sp = sp->next;
if (removed) {
remove_session_elem_from_listener(listener, removed);
} else {
last = sp;
}
}
switch_mutex_unlock(listener->session_mutex);
return status;
@ -685,12 +710,13 @@ static void handle_exit(listener_t *listener, erlang_pid *pid)
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_channel_set_private(channel, "_erlang_session_", NULL);
switch_channel_set_private(channel, "_erlang_listener_", NULL);
/* TODO can we clear out the state_change hook too? */
switch_core_event_hook_remove_state_change(session, state_handler);
switch_core_session_rwunlock(session);
}
/* TODO - if a spawned process that was handling an outbound call fails.. what do we do with the call? */
}
remove_session_elem_from_listener_locked(listener, s);
destroy_session_elem(s);
}
if (listener->log_process.type == ERLANG_PID && !ei_compare_pids(&listener->log_process.pid, pid)) {
@ -713,7 +739,10 @@ static void handle_exit(listener_t *listener, erlang_pid *pid)
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Event handler process for node %s exited\n", pid->node);
/*purge the event queue */
while (switch_queue_trypop(listener->event_queue, &pop) == SWITCH_STATUS_SUCCESS);
while (switch_queue_trypop(listener->event_queue, &pop) == SWITCH_STATUS_SUCCESS) {
switch_event_t *pevent = (switch_event_t *) pop;
switch_event_destroy(&pevent);
}
if (switch_test_flag(listener, LFLAG_EVENTS)) {
uint8_t x = 0;
@ -906,6 +935,7 @@ static void *SWITCH_THREAD_FUNC listener_run(switch_thread_t *thread, void *obj)
/* clean up all the attached sessions */
switch_mutex_lock(listener->session_mutex);
/* TODO destroy memory pools since they're not children of the listener's pool*/
for (s = listener->session_list; s; s = s->next) {
if ((session = switch_core_session_locate(s->uuid_str))) {
switch_channel_clear_flag(switch_core_session_get_channel(session), CF_CONTROLLED);
@ -1076,6 +1106,11 @@ static switch_status_t state_handler(switch_core_session_t *session)
if (session_element) {
session_element->channel_state = state;
if (state == CS_DESTROY) {
/* indicate that once all the events in the event queue are done
* we can throw this away */
switch_set_flag(session_element, LFLAG_SESSION_COMPLETE);
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "unable to update channel state for %s to %s\n", switch_core_session_get_uuid(session), switch_channel_state_name(state));
}
@ -1086,15 +1121,25 @@ static switch_status_t state_handler(switch_core_session_t *session)
session_elem_t *session_elem_create(listener_t* listener, switch_core_session_t *session)
{
/* create a session list element */
session_elem_t* session_element = malloc(sizeof(*session_element));
switch_memory_pool_t *session_elem_pool;
session_elem_t* session_element;/* = malloc(sizeof(*session_element));*/
switch_channel_t *channel = switch_core_session_get_channel(session);
if (switch_core_new_memory_pool(&session_elem_pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "OH OH no pool\n");
return NULL;
}
session_element = switch_core_alloc(session_elem_pool, sizeof(*session_element));
memset(session_element, 0, sizeof(*session_element));
memcpy(session_element->uuid_str, switch_core_session_get_uuid(session), SWITCH_UUID_FORMATTED_LENGTH);
session_element->pool = session_elem_pool;
session_elem_pool = NULL;
switch_queue_create(&session_element->event_queue, SWITCH_CORE_QUEUE_LEN, switch_core_session_get_pool(session));
switch_mutex_init(&session_element->flag_mutex, SWITCH_MUTEX_NESTED, switch_core_session_get_pool(session));
switch_queue_create(&session_element->event_queue, SWITCH_CORE_QUEUE_LEN, session_element->pool);
switch_mutex_init(&session_element->flag_mutex, SWITCH_MUTEX_NESTED, session_element->pool);
switch_channel_set_private(channel, "_erlang_session_", session_element);
switch_channel_set_private(channel, "_erlang_listener_", listener);
@ -1184,6 +1229,7 @@ session_elem_t* attach_call_to_spawned_process(listener_t* listener, char *modul
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Timed out when waiting for outbound pid\n");
remove_session_elem_from_listener_locked(listener,session_element);
switch_core_hash_insert(listener->spawn_pid_hash, hash, &globals.TIMEOUT); /* TODO lock this? */
destroy_session_elem(session_element);
return NULL;
}
i++;
@ -1399,7 +1445,7 @@ SWITCH_STANDARD_API(erlang_cmd)
stream->write_function(stream, "Could not find a listener for %s\n", argv[1]);
} else {
stream->write_function(stream, "I don't care for those arguments at all, sorry");
stream->write_function(stream, "USAGE: erlang sessions <nodename>\n");
goto done;
}

2
src/mod/event_handlers/mod_erlang_event/mod_erlang_event.h
View File

@ -36,6 +36,7 @@ typedef enum {
LFLAG_WAITING_FOR_PID = (1 << 0), /* waiting for a node to return a pid */
LFLAG_OUTBOUND_INIT = (1 << 1), /* Erlang peer has been notified of this session */
LFLAG_SESSION_ALIVE = (1 << 2),
LFLAG_SESSION_COMPLETE = (1 << 3),
} session_flag_t;
typedef enum {
@ -61,6 +62,7 @@ struct session_elem {
struct erlang_process process;
switch_queue_t *event_queue;
switch_channel_state_t channel_state;
switch_memory_pool_t *pool;
struct session_elem *next;
};