Multiple revisions 400318-400319

........
  r400318 | mmichelson | 2013-10-02 17:08:49 -0500 (Wed, 02 Oct 2013) | 12 lines
  
  Remove unnecessary waits from stasis.
  
  Since caches are updated on publisher threads, there is no need
  to wait for the cache updates to occur after a stasis message
  is published.
  
  In the case of chan_pjsip device state changes, this set of
  changes caused an improvement to performance.
  
  Review: https://reviewboard.asterisk.org/r/2890
........
  r400319 | mmichelson | 2013-10-02 17:10:54 -0500 (Wed, 02 Oct 2013) | 3 lines
  
  Remove svn:mergeinfo property.
........

Merged revisions 400318-400319 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@400335 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_pjsip.c

@@ -896,7 +896,11 @@ static int chan_pjsip_devicestate(const char *data)
 	}
 
 	endpoint_snapshot = ast_endpoint_latest_snapshot(ast_endpoint_get_tech(endpoint->persistent),
-		ast_endpoint_get_resource(endpoint->persistent), 1);
+		ast_endpoint_get_resource(endpoint->persistent));
+
+	if (!endpoint_snapshot) {
+		return AST_DEVICE_INVALID;
+	}
 
 	if (endpoint_snapshot->state == AST_ENDPOINT_OFFLINE) {
 		state = AST_DEVICE_UNAVAILABLE;
@@ -916,7 +920,6 @@ static int chan_pjsip_devicestate(const char *data)
 		RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
 		struct ast_channel_snapshot *snapshot;
 
-		stasis_topic_wait(ast_channel_topic_all_cached());
 		msg = stasis_cache_get(cache, ast_channel_snapshot_type(),
 			endpoint_snapshot->channel_ids[num]);
 

include/asterisk/stasis.h

@@ -347,15 +347,6 @@ const char *stasis_topic_name(const struct stasis_topic *topic);
  */
 void stasis_publish(struct stasis_topic *topic, struct stasis_message *message);
 
-/*!
- * \brief Wait for all pending messages on a given topic to be processed.
- * \param topic Topic to await pending messages on.
- * \return 0 on success.
- * \return Non-zero on error.
- * \since 12
- */
-int stasis_topic_wait(struct stasis_topic *topic);
-
 /*! @} */
 
 /*! @{ */
@@ -868,11 +859,6 @@ int stasis_cache_init(void);
  */
 int stasis_config_init(void);
 
-/*!
- * \internal
- */
-int stasis_wait_init(void);
-
 /*! @} */
 
 /*!

include/asterisk/stasis_endpoints.h

@@ -194,14 +194,12 @@ struct stasis_cache *ast_endpoint_cache(void);
  *
  * \param tech Name of the endpoint's technology.
  * \param resource Resource name of the endpoint.
- * \param guaranteed Whether to require all pending messages to have been processed or not.
  * \return Snapshot of the endpoint with the given name.
  * \return \c NULL if endpoint is not found, or on error.
  * \since 12
  */
 struct ast_endpoint_snapshot *ast_endpoint_latest_snapshot(const char *tech,
-	const char *resource,
+	const char *resource
-	unsigned int guaranteed
 );
 
 /*! @} */

main/stasis.c

@@ -814,11 +814,6 @@ int stasis_init(void)
 	/* Be sure the types are cleaned up after the message bus */
 	ast_register_cleanup(stasis_cleanup);
 
-	if (stasis_wait_init() != 0) {
-		ast_log(LOG_ERROR, "Stasis initialization failed\n");
-		return -1;
-	}
-
 	cache_init = stasis_cache_init();
 	if (cache_init != 0) {
 		return -1;

main/stasis_endpoints.c

@@ -187,7 +187,7 @@ void ast_endpoint_blob_publish(struct ast_endpoint *endpoint, struct stasis_mess
 }
 
 struct ast_endpoint_snapshot *ast_endpoint_latest_snapshot(const char *tech,
-	const char *name, unsigned int guaranteed)
+	const char *name)
 {
 	RAII_VAR(char *, id, NULL, ast_free);
 	RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
@@ -198,10 +198,6 @@ struct ast_endpoint_snapshot *ast_endpoint_latest_snapshot(const char *tech,
 		return NULL;
 	}
 
-	if (guaranteed) {
-		stasis_topic_wait(ast_endpoint_topic_all_cached());
-	}
-
 	msg = stasis_cache_get(ast_endpoint_cache(),
 		ast_endpoint_snapshot_type(), id);
 	if (!msg) {

main/stasis_wait.c

@@ -1,133 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 2013, Digium, Inc.
- *
- * Joshua Colp <jcolp@digium.com>
- *
- * See http://www.asterisk.org for more information about
- * the Asterisk project. Please do not directly contact
- * any of the maintainers of this project for assistance;
- * the project provides a web site, mailing lists and IRC
- * channels for your use.
- *
- * This program is free software, distributed under the terms of
- * the GNU General Public License Version 2. See the LICENSE file
- * at the top of the source tree.
- */
-
-/*! \file
- *
- * \brief Wait support for Stasis topics.
- *
- * \author Joshua Colp <jcolp@digium.com>
- */
-
-/*** MODULEINFO
-	<support_level>core</support_level>
- ***/
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include "asterisk/astobj2.h"
-#include "asterisk/stasis.h"
-
-static struct stasis_message_type *cache_guarantee_type(void);
-STASIS_MESSAGE_TYPE_DEFN(cache_guarantee_type);
-
-/*! \internal */
-struct caching_guarantee {
-	ast_mutex_t lock;
-	ast_cond_t cond;
-	unsigned int done:1;
-};
-
-static void caching_guarantee_dtor(void *obj)
-{
-	struct caching_guarantee *guarantee = obj;
-
-	ast_assert(guarantee->done == 1);
-
-	ast_mutex_destroy(&guarantee->lock);
-	ast_cond_destroy(&guarantee->cond);
-}
-
-static void guarantee_handler(void *data, struct stasis_subscription *sub,
-	struct stasis_message *message)
-{
-	/* Wait for our particular message */
-	if (data == message) {
-		struct caching_guarantee *guarantee;
-		ast_assert(cache_guarantee_type() == stasis_message_type(message));
-		guarantee = stasis_message_data(message);
-
-		ast_mutex_lock(&guarantee->lock);
-		guarantee->done = 1;
-		ast_cond_signal(&guarantee->cond);
-		ast_mutex_unlock(&guarantee->lock);
-	}
-}
-
-static struct stasis_message *caching_guarantee_create(void)
-{
-	RAII_VAR(struct caching_guarantee *, guarantee, NULL, ao2_cleanup);
-	RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
-
-	if (!(guarantee = ao2_alloc(sizeof(*guarantee), caching_guarantee_dtor))) {
-		return NULL;
-	}
-
-	ast_mutex_init(&guarantee->lock);
-	ast_cond_init(&guarantee->cond, NULL);
-
-	if (!(msg = stasis_message_create(cache_guarantee_type(), guarantee))) {
-		return NULL;
-	}
-
-	ao2_ref(msg, +1);
-	return msg;
-}
-
-int stasis_topic_wait(struct stasis_topic *topic)
-{
-	RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
-	RAII_VAR(struct stasis_subscription *, sub, NULL, stasis_unsubscribe);
-	struct caching_guarantee *guarantee;
-
-	msg = caching_guarantee_create();
-	if (!msg) {
-		return -1;
-	}
-
-	sub = stasis_subscribe(topic, guarantee_handler, msg);
-	if (!sub) {
-		return -1;
-	}
-
-	guarantee = stasis_message_data(msg);
-
-	ast_mutex_lock(&guarantee->lock);
-	stasis_publish(topic, msg);
-	while (!guarantee->done) {
-		ast_cond_wait(&guarantee->cond, &guarantee->lock);
-	}
-	ast_mutex_unlock(&guarantee->lock);
-	return 0;
-}
-
-static void wait_cleanup(void)
-{
-	STASIS_MESSAGE_TYPE_CLEANUP(cache_guarantee_type);
-}
-
-int stasis_wait_init(void)
-{
-	ast_register_cleanup(wait_cleanup);
-
-	if (STASIS_MESSAGE_TYPE_INIT(cache_guarantee_type) != 0) {
-		return -1;
-	}
-	return 0;
-}

res/ari/resource_endpoints.c

@@ -140,7 +140,7 @@ void ast_ari_get_endpoint(struct ast_variable *headers,
 	RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
 	RAII_VAR(struct ast_endpoint_snapshot *, snapshot, NULL, ao2_cleanup);
 
-	snapshot = ast_endpoint_latest_snapshot(args->tech, args->resource, 0);
+	snapshot = ast_endpoint_latest_snapshot(args->tech, args->resource);
 	if (!snapshot) {
 		ast_ari_response_error(response, 404, "Not Found",
 			"Endpoint not found");

tests/test_cel.c

@@ -254,7 +254,6 @@ static void do_sleep(void)
 	ast_hangup((channel)); \
 	HANGUP_EVENT(channel, cause, dialstatus); \
 	APPEND_EVENT(channel, AST_CEL_CHANNEL_END, NULL, NULL); \
-	stasis_topic_wait(ast_channel_topic_all_cached()); \
 	ao2_cleanup(stasis_cache_get(ast_channel_cache(), \
 		ast_channel_snapshot_type(), ast_channel_uniqueid(channel))); \
 	ao2_cleanup(channel); \