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Switch from mutex to a rwlock to increase throughput

This commit is contained in:
Andrew Thompson 2010-08-22 16:51:15 -04:00
parent 5ef61c961f
commit 121e57a1db
3 changed files with 27 additions and 26 deletions
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4
src/mod/event_handlers/mod_erlang_event/handle_msg.c
View File

@ -646,7 +646,7 @@ static switch_status_t handle_msg_bind(listener_t *listener, erlang_msg * msg, e
binding->process.pid = msg->from;
binding->listener = listener;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_wrlock(globals.listener_rwlock);
for (ptr = bindings.head; ptr && ptr->next; ptr = ptr->next);
@ -657,7 +657,7 @@ static switch_status_t handle_msg_bind(listener_t *listener, erlang_msg * msg, e
}
switch_xml_set_binding_sections(bindings.search_binding, switch_xml_get_binding_sections(bindings.search_binding) | section);
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "sections %d\n", switch_xml_get_binding_sections(bindings.search_binding));

47
src/mod/event_handlers/mod_erlang_event/mod_erlang_event.c
View File

@ -57,7 +57,7 @@ static switch_status_t socket_logger(const switch_log_node_t *node, switch_log_l
{
listener_t *l;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_rdlock(globals.listener_rwlock);
for (l = listen_list.listeners; l; l = l->next) {
if (switch_test_flag(l, LFLAG_LOG) && l->level >= node->level) {
@ -80,7 +80,7 @@ static switch_status_t socket_logger(const switch_log_node_t *node, switch_log_l
}
}
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
return SWITCH_STATUS_SUCCESS;
}
@ -107,7 +107,7 @@ static void remove_binding(listener_t *listener, erlang_pid * pid)
{
struct erlang_binding *ptr, *lst = NULL;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_wrlock(globals.listener_rwlock);
switch_xml_set_binding_sections(bindings.search_binding, SWITCH_XML_SECTION_MAX);
@ -134,7 +134,7 @@ static void remove_binding(listener_t *listener, erlang_pid * pid)
}
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
}
@ -194,7 +194,7 @@ static void event_handler(switch_event_t *event)
lp = listen_list.listeners;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_rdlock(globals.listener_rwlock);
while (lp) {
uint8_t send = 0;
@ -250,7 +250,7 @@ static void event_handler(switch_event_t *event)
}
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
}
@ -276,10 +276,10 @@ static void close_socket(int *sock)
static void add_listener(listener_t *listener)
{
/* add me to the listeners so I get events */
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_wrlock(globals.listener_rwlock);
listener->next = listen_list.listeners;
listen_list.listeners = listener;
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
}
@ -287,7 +287,7 @@ static void remove_listener(listener_t *listener)
{
listener_t *l, *last = NULL;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_wrlock(globals.listener_rwlock);
for (l = listen_list.listeners; l; l = l->next) {
if (l == listener) {
if (last) {
@ -298,7 +298,7 @@ static void remove_listener(listener_t *listener)
}
last = l;
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
}
/* Search for a listener already talking to the specified node */
@ -306,13 +306,13 @@ static listener_t *find_listener(char *nodename)
{
listener_t *l = NULL;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_rdlock(globals.listener_rwlock);
for (l = listen_list.listeners; l; l = l->next) {
if (!strncmp(nodename, l->peer_nodename, MAXNODELEN)) {
break;
}
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
return l;
}
@ -968,9 +968,10 @@ static void *SWITCH_THREAD_FUNC listener_run(switch_thread_t *thread, void *obj)
void *value;
switch_hash_index_t *iter;
switch_mutex_lock(globals.listener_mutex);
/* TODO - should we have a different mutex for this? */
switch_thread_rwlock_wrlock(globals.listener_rwlock);
prefs.threads++;
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
switch_assert(listener != NULL);
@ -1018,9 +1019,9 @@ static void *SWITCH_THREAD_FUNC listener_run(switch_thread_t *thread, void *obj)
switch_core_destroy_memory_pool(&pool);
}
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_wrlock(globals.listener_rwlock);
prefs.threads--;
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
return NULL;
}
@ -1537,7 +1538,7 @@ SWITCH_STANDARD_API(erlang_cmd)
if (!strcasecmp(argv[0], "listeners")) {
listener_t *l;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_rdlock(globals.listener_rwlock);
if (listen_list.listeners) {
for (l = listen_list.listeners; l; l = l->next) {
@ -1547,12 +1548,12 @@ SWITCH_STANDARD_API(erlang_cmd)
stream->write_function(stream, "No active listeners\n");
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
} else if (!strcasecmp(argv[0], "sessions") && argc == 2) {
listener_t *l;
int found = 0;
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_rdlock(globals.listener_rwlock);
for (l = listen_list.listeners; l; l = l->next) {
if (!strcasecmp(l->peer_nodename, argv[1])) {
session_elem_t *sp;
@ -1578,7 +1579,7 @@ SWITCH_STANDARD_API(erlang_cmd)
break;
}
}
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
if (!found)
stream->write_function(stream, "Could not find a listener for %s\n", argv[1]);
@ -1604,7 +1605,7 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_erlang_event_load)
memset(&prefs, 0, sizeof(prefs));
switch_mutex_init(&globals.listener_mutex, SWITCH_MUTEX_NESTED, pool);
switch_thread_rwlock_create(&globals.listener_rwlock, pool);
switch_mutex_init(&globals.fetch_reply_mutex, SWITCH_MUTEX_DEFAULT, pool);
switch_core_hash_init(&globals.fetch_reply_hash, pool);
@ -1853,7 +1854,7 @@ SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_erlang_event_shutdown)
switch_event_unbind(&globals.node);
switch_xml_unbind_search_function_ptr(erlang_fetch);
switch_mutex_lock(globals.listener_mutex);
switch_thread_rwlock_wrlock(globals.listener_rwlock);
for (l = listen_list.listeners; l; l = l->next) {
close_socket(&l->sockfd);
@ -1863,7 +1864,7 @@ SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_erlang_event_shutdown)
WSACleanup();
#endif
switch_mutex_unlock(globals.listener_mutex);
switch_thread_rwlock_unlock(globals.listener_rwlock);
switch_sleep(1500000); /* sleep for 1.5 seconds */

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

@ -162,7 +162,7 @@ struct api_command_struct {
};
struct globals_struct {
switch_mutex_t *listener_mutex;
switch_thread_rwlock_t *listener_rwlock;
switch_event_node_t *node;
switch_mutex_t *ref_mutex;
switch_mutex_t *fetch_reply_mutex;