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clean up mutex app code

This commit is contained in:
Anthony Minessale 2012-08-29 14:42:18 -05:00
parent d1b0b1168a
commit 5c00f6638c
1 changed files with 84 additions and 26 deletions
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110
src/mod/applications/mod_dptools/mod_dptools.c
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@ -4565,7 +4565,7 @@ SWITCH_STANDARD_APP(blind_transfer_ack_function)
/* /// mutex /// */
typedef struct mutex_node_s {
switch_core_session_t *session;
char *uuid;
struct mutex_node_s *next;
} mutex_node_t;
@ -4588,6 +4588,7 @@ typedef struct master_mutex_s {
} master_mutex_t;
static switch_status_t mutex_hanguphook(switch_core_session_t *session);
static void advance(master_mutex_t *master, switch_bool_t pop_current);
static switch_status_t read_frame_callback(switch_core_session_t *session, switch_frame_t *frame, void *user_data)
{
@ -4603,21 +4604,41 @@ static switch_status_t read_frame_callback(switch_core_session_t *session, switc
}
static void free_node(mutex_node_t **npp)
{
mutex_node_t *np;
if (npp) {
np = *npp;
*npp = NULL;
switch_safe_free(np->uuid);
free(np);
}
}
static void cancel(switch_core_session_t *session, master_mutex_t *master)
{
mutex_node_t *np, *lp = NULL;
const char *uuid = switch_core_session_get_uuid(session);
switch_mutex_lock(globals.mutex_mutex);
for (np = master->list; np; np = np->next) {
if (np && np->session == session) {
if (np && !strcmp(np->uuid, uuid)) {
switch_core_event_hook_remove_state_change(session, mutex_hanguphook);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s mutex %s canceled\n",
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s %s mutex %s canceled\n",
switch_core_session_get_uuid(session),
switch_core_session_get_name(session), master->key);
if (lp) {
lp->next = np->next;
} else {
master->list = np->next;
if ((master->list = np->next)) {
advance(master, SWITCH_FALSE);
}
}
free_node(&np);
break;
}
@ -4628,23 +4649,46 @@ static void cancel(switch_core_session_t *session, master_mutex_t *master)
}
static void advance(master_mutex_t *master)
static void advance(master_mutex_t *master, switch_bool_t pop_current)
{
switch_mutex_lock(globals.mutex_mutex);
if (!master || !master->list) {
goto end;
}
master->list = master->list->next;
while (master->list) {
mutex_node_t *np;
if (master->list) {
switch_channel_t *channel = switch_core_session_get_channel(master->list->session);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(master->list->session), SWITCH_LOG_DEBUG,
"%s mutex %s advanced\n", switch_channel_get_name(channel), master->key);
switch_channel_set_app_flag_key(master->key, channel, MUTEX_FLAG_SET);
switch_channel_clear_app_flag_key(master->key, channel, MUTEX_FLAG_WAIT);
switch_core_event_hook_add_state_change(master->list->session, mutex_hanguphook);
if (!pop_current) {
pop_current++;
} else {
np = master->list;
master->list = master->list->next;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "ADVANCE POP %p\n", (void *)np);
free_node(&np);
}
if (master->list) {
switch_core_session_t *session;
if ((session = switch_core_session_locate(master->list->uuid))) {
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG,
"%s mutex %s advanced\n", switch_channel_get_name(channel), master->key);
switch_channel_set_app_flag_key(master->key, channel, MUTEX_FLAG_SET);
switch_channel_clear_app_flag_key(master->key, channel, MUTEX_FLAG_WAIT);
switch_core_event_hook_add_state_change(session, mutex_hanguphook);
switch_core_session_rwunlock(session);
break;
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "uuid %s already gone\n", master->list->uuid);
}
}
}
@ -4665,14 +4709,22 @@ static void confirm(switch_core_session_t *session, master_mutex_t *master)
}
}
if (master->list->session == session) {
switch_channel_clear_app_flag_key(master->key, channel, MUTEX_FLAG_SET);
switch_core_event_hook_remove_state_change(session, mutex_hanguphook);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s mutex %s cleared\n", switch_channel_get_name(channel), master->key);
advance(master);
} else {
cancel(session, master);
switch_mutex_lock(globals.mutex_mutex);
if (master->list) {
if (!strcmp(master->list->uuid, switch_core_session_get_uuid(session))) {
switch_channel_clear_app_flag_key(master->key, channel, MUTEX_FLAG_SET);
switch_core_event_hook_remove_state_change(session, mutex_hanguphook);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s %s mutex %s cleared\n",
switch_core_session_get_uuid(session),
switch_channel_get_name(channel), master->key);
advance(master, SWITCH_TRUE);
} else {
cancel(session, master);
}
}
switch_mutex_unlock(globals.mutex_mutex);
}
@ -4729,10 +4781,12 @@ static switch_bool_t do_mutex(switch_core_session_t *session, const char *key, s
}
if (on) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "HIT ON\n");
node = switch_core_session_alloc(session, sizeof(*node));
node->session = session;
switch_zmalloc(node, sizeof(*node));
node->uuid = strdup(switch_core_session_get_uuid(session));
node->next = NULL;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "CHECK MASTER LIST %p\n", (void *) master->list);
@ -4749,7 +4803,9 @@ static switch_bool_t do_mutex(switch_core_session_t *session, const char *key, s
switch_channel_clear_app_flag_key(key, channel, MUTEX_FLAG_WAIT);
switch_channel_set_private(channel, "_mutex_master", master);
switch_core_event_hook_add_state_change(session, mutex_hanguphook);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s mutex %s acquired\n", switch_channel_get_name(channel), key);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s %s mutex %s acquired\n",
switch_core_session_get_uuid(session),
switch_channel_get_name(channel), key);
switch_mutex_unlock(globals.mutex_mutex);
return SWITCH_TRUE;
}
@ -4812,10 +4868,12 @@ static switch_bool_t do_mutex(switch_core_session_t *session, const char *key, s
}
switch_mutex_lock(globals.mutex_mutex);
if (switch_channel_test_app_flag_key(key, channel, MUTEX_FLAG_WAIT)) {
if (switch_channel_test_app_flag_key(key, channel, MUTEX_FLAG_WAIT) || !switch_channel_up(channel)) {
cancel(session, master);
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s mutex %s acquired\n", switch_channel_get_name(channel), key);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s %s mutex %s acquired\n",
switch_core_session_get_uuid(session),
switch_channel_get_name(channel), key);
switch_core_event_hook_add_state_change(session, mutex_hanguphook);
switch_channel_set_private(channel, "_mutex_master", master);
}