Merge pull request #3522 from annando/1706-lock
Some more poller speed and lock functionality
This commit is contained in:
GitHub
commit
66458d7313
15 changed files with 329 additions and 198 deletions
15
boot.php
15
boot.php
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@ -35,12 +35,13 @@ require_once 'include/features.php';
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require_once 'include/identity.php';
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require_once 'update.php';
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require_once 'include/dbstructure.php';
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require_once 'include/poller.php';
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define ( 'FRIENDICA_PLATFORM', 'Friendica');
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define ( 'FRIENDICA_CODENAME', 'Asparagus');
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define ( 'FRIENDICA_VERSION', '3.5.3-dev' );
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define ( 'DFRN_PROTOCOL_VERSION', '2.23' );
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define ( 'DB_UPDATE_VERSION', 1227 );
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define ( 'DB_UPDATE_VERSION', 1228 );
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/**
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* @brief Constant with a HTML line break.
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@ -1095,18 +1096,8 @@ function proc_run($cmd) {
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return;
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}
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// Checking number of workers
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$workers = q("SELECT COUNT(*) AS `workers` FROM `workerqueue` WHERE `executed` > '%s'", dbesc(NULL_DATE));
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// Get number of allowed number of worker threads
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$queues = intval(get_config("system", "worker_queues"));
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if ($queues == 0) {
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$queues = 4;
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}
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// If there are already enough workers running, don't fork another one
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if ($workers[0]["workers"] >= $queues) {
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if (poller_too_much_workers()) {
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return;
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}
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@ -1,6 +1,6 @@
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-- ------------------------------------------
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-- Friendica 3.5.2-rc (Asparagus)
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-- DB_UPDATE_VERSION 1227
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-- Friendica 3.5.3dev (Asparagus)
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-- DB_UPDATE_VERSION 1228
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-- ------------------------------------------
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@ -580,7 +580,7 @@ CREATE TABLE IF NOT EXISTS `locks` (
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`id` int(11) NOT NULL auto_increment,
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`name` varchar(128) NOT NULL DEFAULT '',
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`locked` tinyint(1) NOT NULL DEFAULT 0,
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`created` datetime DEFAULT '0001-01-01 00:00:00',
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`pid` int(10) unsigned NOT NULL DEFAULT 0,
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PRIMARY KEY(`id`)
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) DEFAULT COLLATE utf8mb4_general_ci;
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@ -1116,6 +1116,7 @@ CREATE TABLE IF NOT EXISTS `workerqueue` (
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`executed` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
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PRIMARY KEY(`id`),
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INDEX `pid` (`pid`),
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INDEX `parameter` (`parameter`(192)),
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INDEX `priority_created` (`priority`,`created`)
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) DEFAULT COLLATE utf8mb4_general_ci;
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@ -2,10 +2,10 @@ Table locks
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===========
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| Field | Description | Type | Null | Key | Default | Extra |
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|---------|------------------|--------------|------|-----|---------------------|----------------|
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|---------|------------------|------------------|------|-----|---------------------|----------------|
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| id | sequential ID | int(11) | NO | PRI | NULL | auto_increment |
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| name | | varchar(128) | NO | | | |
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| locked | | tinyint(1) | NO | | 0 | |
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| created | | datetime | YES | | 0001-01-01 00:00:00 | |
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| pid | Process ID | int(10) unsigned | NO | | 0 | |
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Return to [database documentation](help/database)
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@ -246,10 +246,11 @@ function cron_poll_contacts($argc, $argv) {
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logger("Polling " . $contact["network"] . " " . $contact["id"] . " " . $contact["nick"] . " " . $contact["name"]);
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if (($contact['network'] == NETWORK_FEED) AND ($contact['priority'] <= 3)) {
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proc_run(PRIORITY_MEDIUM, 'include/onepoll.php', intval($contact['id']));
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$priority = PRIORITY_MEDIUM;
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} else {
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proc_run(PRIORITY_LOW, 'include/onepoll.php', intval($contact['id']));
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$priority = PRIORITY_LOW;
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}
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proc_run(array('priority' => $priority, 'dont_fork' => true), 'include/onepoll.php', intval($contact['id']));
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}
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}
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}
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@ -806,6 +806,41 @@ class dba {
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return self::e($sql, $param);
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}
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/**
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* @brief Locks a table for exclusive write access
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*
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* This function can be extended in the future to accept a table array as well.
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*
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* @param string $table Table name
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*
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* @return boolean was the lock successful?
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*/
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static public function lock($table) {
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// See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
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self::e("SET autocommit=0");
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$success = self::e("LOCK TABLES `".self::$dbo->escape($table)."` WRITE");
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if (!$success) {
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self::e("SET autocommit=1");
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} else {
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self::$in_transaction = true;
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}
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return $success;
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}
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/**
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* @brief Unlocks all locked tables
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*
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* @return boolean was the unlock successful?
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*/
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static public function unlock() {
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// See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
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self::e("COMMIT");
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$success = self::e("UNLOCK TABLES");
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self::e("SET autocommit=1");
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self::$in_transaction = false;
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return $success;
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}
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/**
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* @brief Starts a transaction
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*
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@ -1205,7 +1205,7 @@ function db_definition() {
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"id" => array("type" => "int(11)", "not null" => "1", "extra" => "auto_increment", "primary" => "1"),
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"name" => array("type" => "varchar(128)", "not null" => "1", "default" => ""),
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"locked" => array("type" => "tinyint(1)", "not null" => "1", "default" => "0"),
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"created" => array("type" => "datetime", "default" => NULL_DATE),
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"pid" => array("type" => "int(10) unsigned", "not null" => "1", "default" => "0"),
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),
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"indexes" => array(
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"PRIMARY" => array("id"),
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@ -1743,6 +1743,7 @@ function db_definition() {
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"indexes" => array(
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"PRIMARY" => array("id"),
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"pid" => array("pid"),
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"parameter" => array("parameter(192)"),
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"priority_created" => array("priority", "created"),
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)
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);
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@ -1,80 +0,0 @@
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<?php
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// Provide some ability to lock a PHP function so that multiple processes
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// can't run the function concurrently
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if (! function_exists('lock_function')) {
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function lock_function($fn_name, $block = true, $wait_sec = 2, $timeout = 30) {
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if ( $wait_sec == 0 )
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$wait_sec = 2; // don't let the user pick a value that's likely to crash the system
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$got_lock = false;
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$start = time();
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do {
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q("LOCK TABLE `locks` WRITE");
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$r = q("SELECT `locked`, `created` FROM `locks` WHERE `name` = '%s' LIMIT 1",
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dbesc($fn_name)
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);
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if ((dbm::is_result($r)) AND (!$r[0]['locked'] OR (strtotime($r[0]['created']) < time() - 3600))) {
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q("UPDATE `locks` SET `locked` = 1, `created` = '%s' WHERE `name` = '%s'",
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dbesc(datetime_convert()),
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dbesc($fn_name)
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);
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$got_lock = true;
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}
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elseif (! dbm::is_result($r)) {
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/// @TODO the Boolean value for count($r) should be equivalent to the Boolean value of $r
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q("INSERT INTO `locks` (`name`, `created`, `locked`) VALUES ('%s', '%s', 1)",
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dbesc($fn_name),
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dbesc(datetime_convert())
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);
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$got_lock = true;
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}
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q("UNLOCK TABLES");
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if (($block) && (! $got_lock))
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sleep($wait_sec);
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} while (($block) && (! $got_lock) && ((time() - $start) < $timeout));
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logger('lock_function: function ' . $fn_name . ' with blocking = ' . $block . ' got_lock = ' . $got_lock . ' time = ' . (time() - $start), LOGGER_DEBUG);
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return $got_lock;
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}}
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if (! function_exists('block_on_function_lock')) {
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function block_on_function_lock($fn_name, $wait_sec = 2, $timeout = 30) {
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if ( $wait_sec == 0 )
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$wait_sec = 2; // don't let the user pick a value that's likely to crash the system
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$start = time();
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do {
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$r = q("SELECT locked FROM locks WHERE name = '%s' LIMIT 1",
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dbesc($fn_name)
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);
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if (dbm::is_result($r) && $r[0]['locked']) {
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sleep($wait_sec);
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}
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} while (dbm::is_result($r) && $r[0]['locked'] && ((time() - $start) < $timeout));
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return;
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}}
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if (! function_exists('unlock_function')) {
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function unlock_function($fn_name) {
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$r = q("UPDATE `locks` SET `locked` = 0, `created` = '%s' WHERE `name` = '%s'",
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dbesc(NULL_DATE),
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dbesc($fn_name)
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);
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logger('unlock_function: released lock for function ' . $fn_name, LOGGER_DEBUG);
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return;
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}}
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@ -498,7 +498,7 @@ function notifier_run(&$argv, &$argc){
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}
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logger("Deliver ".$target_item["guid"]." to ".$contact['url']." via network ".$contact['network'], LOGGER_DEBUG);
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proc_run($priority, 'include/delivery.php', $cmd, $item_id, $contact['id']);
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proc_run(array('priority' => $priority, 'dont_fork' => true), 'include/delivery.php', $cmd, $item_id, $contact['id']);
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}
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}
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@ -563,7 +563,7 @@ function notifier_run(&$argv, &$argc){
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if ((! $mail) && (! $fsuggest) && (! $followup)) {
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logger('notifier: delivery agent: '.$rr['name'].' '.$rr['id'].' '.$rr['network'].' '.$target_item["guid"]);
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proc_run($priority, 'include/delivery.php', $cmd, $item_id, $rr['id']);
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proc_run(array('priority' => $priority, 'dont_fork' => true), 'include/delivery.php', $cmd, $item_id, $rr['id']);
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}
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}
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}
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@ -603,7 +603,7 @@ function notifier_run(&$argv, &$argc){
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}
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// Handling the pubsubhubbub requests
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proc_run(PRIORITY_HIGH, 'include/pubsubpublish.php');
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proc_run(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), 'include/pubsubpublish.php');
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}
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logger('notifier: calling hooks', LOGGER_DEBUG);
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@ -2,13 +2,14 @@
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use Friendica\App;
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use Friendica\Core\Config;
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use Friendica\Util\Lock;
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if (!file_exists("boot.php") AND (sizeof($_SERVER["argv"]) != 0)) {
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$directory = dirname($_SERVER["argv"][0]);
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if (substr($directory, 0, 1) != "/")
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if (substr($directory, 0, 1) != "/") {
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$directory = $_SERVER["PWD"]."/".$directory;
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}
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$directory = realpath($directory."/..");
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chdir($directory);
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@ -19,16 +20,12 @@ require_once("boot.php");
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function poller_run($argv, $argc){
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global $a, $db;
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if (is_null($a)) {
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$a = new App(dirname(__DIR__));
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}
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if (is_null($db)) {
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@include(".htconfig.php");
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require_once("include/dba.php");
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$db = new dba($db_host, $db_user, $db_pass, $db_data);
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unset($db_host, $db_user, $db_pass, $db_data);
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};
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Config::load();
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@ -41,54 +38,74 @@ function poller_run($argv, $argc){
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load_hooks();
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// At first check the maximum load. We shouldn't continue with a high load
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if ($a->maxload_reached()) {
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logger('Pre check: maximum load reached, quitting.', LOGGER_DEBUG);
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return;
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}
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// We now start the process. This is done after the load check since this could increase the load.
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$a->start_process();
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// At first we check the number of workers and quit if there are too much of them
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// This is done at the top to avoid that too much code is executed without a need to do so,
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// since the poller mostly quits here.
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if (poller_too_much_workers()) {
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poller_kill_stale_workers();
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logger('Pre check: Active worker limit reached, quitting.', LOGGER_DEBUG);
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return;
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}
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// Do we have too few memory?
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if ($a->min_memory_reached()) {
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logger('Pre check: Memory limit reached, quitting.', LOGGER_DEBUG);
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return;
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}
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// Possibly there are too much database connections
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if (poller_max_connections_reached()) {
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logger('Pre check: maximum connections reached, quitting.', LOGGER_DEBUG);
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return;
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}
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if ($a->maxload_reached()) {
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// Possibly there are too much database processes that block the system
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if ($a->max_processes_reached()) {
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logger('Pre check: maximum processes reached, quitting.', LOGGER_DEBUG);
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return;
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}
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// Now we start additional cron processes if we should do so
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if (($argc <= 1) OR ($argv[1] != "no_cron")) {
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poller_run_cron();
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}
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if ($a->max_processes_reached()) {
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return;
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}
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// Checking the number of workers
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if (poller_too_much_workers()) {
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poller_kill_stale_workers();
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return;
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}
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$starttime = time();
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// We fetch the next queue entry that is about to be executed
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while ($r = poller_worker_process()) {
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// If we got that queue entry we claim it for us
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if (!poller_claim_process($r[0])) {
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continue;
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}
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// To avoid the quitting of multiple pollers only one poller at a time will execute the check
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if (Lock::set('poller_worker', 0)) {
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// Count active workers and compare them with a maximum value that depends on the load
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if (poller_too_much_workers()) {
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logger('Active worker limit reached, quitting.', LOGGER_DEBUG);
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return;
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}
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// Check free memory
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if ($a->min_memory_reached()) {
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logger('Memory limit reached, quitting.', LOGGER_DEBUG);
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return;
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}
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// Count active workers and compare them with a maximum value that depends on the load
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if (poller_too_much_workers()) {
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logger('Active worker limit reached, quitting.', LOGGER_DEBUG);
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return;
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Lock::remove('poller_worker');
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}
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// finally the work will be done
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if (!poller_execute($r[0])) {
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logger('Process execution failed, quitting.', LOGGER_DEBUG);
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return;
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@ -96,7 +113,7 @@ function poller_run($argv, $argc){
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// Quit the poller once every hour
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if (time() > ($starttime + 3600)) {
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logger('Process lifetime reachted, quitting.', LOGGER_DEBUG);
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logger('Process lifetime reached, quitting.', LOGGER_DEBUG);
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return;
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}
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}
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@ -150,7 +167,6 @@ function poller_execute($queue) {
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$funcname = str_replace(".php", "", basename($argv[0]))."_run";
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if (function_exists($funcname)) {
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poller_exec_function($queue, $funcname, $argv);
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dba::delete('workerqueue', array('id' => $queue["id"]));
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} else {
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@ -226,26 +242,29 @@ function poller_exec_function($queue, $funcname, $argv) {
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$o = "\nDatabase Read:\n";
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foreach ($a->callstack["database"] AS $func => $time) {
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$time = round($time, 3);
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if ($time > 0)
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if ($time > 0) {
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$o .= $func.": ".$time."\n";
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}
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}
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}
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if (isset($a->callstack["database_write"])) {
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$o .= "\nDatabase Write:\n";
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foreach ($a->callstack["database_write"] AS $func => $time) {
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$time = round($time, 3);
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if ($time > 0)
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if ($time > 0) {
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$o .= $func.": ".$time."\n";
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}
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}
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}
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if (isset($a->callstack["network"])) {
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$o .= "\nNetwork:\n";
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foreach ($a->callstack["network"] AS $func => $time) {
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$time = round($time, 3);
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if ($time > 0)
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if ($time > 0) {
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$o .= $func.": ".$time."\n";
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}
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}
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}
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} else {
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$o = '';
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}
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@ -284,27 +303,30 @@ function poller_max_connections_reached() {
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if ($max == 0) {
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// the maximum number of possible user connections can be a system variable
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$r = q("SHOW VARIABLES WHERE `variable_name` = 'max_user_connections'");
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if ($r)
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if (dbm::is_result($r)) {
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$max = $r[0]["Value"];
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}
|
||||
// Or it can be granted. This overrides the system variable
|
||||
$r = q("SHOW GRANTS");
|
||||
if ($r)
|
||||
if (dbm::is_result($r)) {
|
||||
foreach ($r AS $grants) {
|
||||
$grant = array_pop($grants);
|
||||
if (stristr($grant, "GRANT USAGE ON"))
|
||||
if (preg_match("/WITH MAX_USER_CONNECTIONS (\d*)/", $grant, $match))
|
||||
if (stristr($grant, "GRANT USAGE ON")) {
|
||||
if (preg_match("/WITH MAX_USER_CONNECTIONS (\d*)/", $grant, $match)) {
|
||||
$max = $match[1];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// If $max is set we will use the processlist to determine the current number of connections
|
||||
// The processlist only shows entries of the current user
|
||||
if ($max != 0) {
|
||||
$r = q("SHOW PROCESSLIST");
|
||||
if (!dbm::is_result($r))
|
||||
if (!dbm::is_result($r)) {
|
||||
return false;
|
||||
|
||||
}
|
||||
$used = count($r);
|
||||
|
||||
logger("Connection usage (user values): ".$used."/".$max, LOGGER_DEBUG);
|
||||
|
|
@ -320,28 +342,28 @@ function poller_max_connections_reached() {
|
|||
// We will now check for the system values.
|
||||
// This limit could be reached although the user limits are fine.
|
||||
$r = q("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
|
||||
if (!$r)
|
||||
if (!dbm::is_result($r)) {
|
||||
return false;
|
||||
|
||||
}
|
||||
$max = intval($r[0]["Value"]);
|
||||
if ($max == 0)
|
||||
if ($max == 0) {
|
||||
return false;
|
||||
|
||||
}
|
||||
$r = q("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
|
||||
if (!$r)
|
||||
if (!dbm::is_result($r)) {
|
||||
return false;
|
||||
|
||||
}
|
||||
$used = intval($r[0]["Value"]);
|
||||
if ($used == 0)
|
||||
if ($used == 0) {
|
||||
return false;
|
||||
|
||||
}
|
||||
logger("Connection usage (system values): ".$used."/".$max, LOGGER_DEBUG);
|
||||
|
||||
$level = $used / $max * 100;
|
||||
|
||||
if ($level < $maxlevel)
|
||||
if ($level < $maxlevel) {
|
||||
return false;
|
||||
|
||||
}
|
||||
logger("Maximum level (".$level."%) of system connections reached: ".$used."/".$max);
|
||||
return true;
|
||||
}
|
||||
|
|
@ -440,8 +462,7 @@ function poller_too_much_workers() {
|
|||
dba::close($processes);
|
||||
}
|
||||
dba::close($entries);
|
||||
|
||||
$processlist = implode(', ', $listitem);
|
||||
$processlist = ' ('.implode(', ', $listitem).')';
|
||||
|
||||
$s = q("SELECT COUNT(*) AS `total` FROM `workerqueue` WHERE `executed` <= '%s'", dbesc(NULL_DATE));
|
||||
$entries = $s[0]["total"];
|
||||
|
|
@ -460,7 +481,7 @@ function poller_too_much_workers() {
|
|||
}
|
||||
}
|
||||
|
||||
logger("Load: ".$load."/".$maxsysload." - processes: ".$active."/".$entries." (".$processlist.") - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
|
||||
logger("Load: ".$load."/".$maxsysload." - processes: ".$active."/".$entries.$processlist." - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
|
||||
|
||||
// Are there fewer workers running as possible? Then fork a new one.
|
||||
if (!Config::get("system", "worker_dont_fork") AND ($queues > ($active + 1)) AND ($entries > 1)) {
|
||||
|
|
@ -471,7 +492,7 @@ function poller_too_much_workers() {
|
|||
}
|
||||
}
|
||||
|
||||
return($active >= $queues);
|
||||
return $active >= $queues;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -482,7 +503,7 @@ function poller_too_much_workers() {
|
|||
function poller_active_workers() {
|
||||
$workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'poller.php'");
|
||||
|
||||
return($workers[0]["processes"]);
|
||||
return $workers[0]["processes"];
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -503,36 +524,37 @@ function poller_passing_slow(&$highest_priority) {
|
|||
INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid`");
|
||||
|
||||
// No active processes at all? Fine
|
||||
if (!dbm::is_result($r))
|
||||
return(false);
|
||||
|
||||
if (!dbm::is_result($r)) {
|
||||
return false;
|
||||
}
|
||||
$priorities = array();
|
||||
foreach ($r AS $line)
|
||||
foreach ($r AS $line) {
|
||||
$priorities[] = $line["priority"];
|
||||
|
||||
}
|
||||
// Should not happen
|
||||
if (count($priorities) == 0)
|
||||
return(false);
|
||||
|
||||
if (count($priorities) == 0) {
|
||||
return false;
|
||||
}
|
||||
$highest_priority = min($priorities);
|
||||
|
||||
// The highest process is already the slowest one?
|
||||
// Then we quit
|
||||
if ($highest_priority == PRIORITY_NEGLIGIBLE)
|
||||
return(false);
|
||||
|
||||
if ($highest_priority == PRIORITY_NEGLIGIBLE) {
|
||||
return false;
|
||||
}
|
||||
$high = 0;
|
||||
foreach ($priorities AS $priority)
|
||||
if ($priority == $highest_priority)
|
||||
foreach ($priorities AS $priority) {
|
||||
if ($priority == $highest_priority) {
|
||||
++$high;
|
||||
|
||||
}
|
||||
}
|
||||
logger("Highest priority: ".$highest_priority." Total processes: ".count($priorities)." Count high priority processes: ".$high, LOGGER_DEBUG);
|
||||
$passing_slow = (($high/count($priorities)) > (2/3));
|
||||
|
||||
if ($passing_slow)
|
||||
if ($passing_slow) {
|
||||
logger("Passing slower processes than priority ".$highest_priority, LOGGER_DEBUG);
|
||||
|
||||
return($passing_slow);
|
||||
}
|
||||
return $passing_slow;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -546,7 +568,7 @@ function poller_worker_process() {
|
|||
$highest_priority = 0;
|
||||
|
||||
if (poller_passing_slow($highest_priority)) {
|
||||
dba::e('LOCK TABLES `workerqueue` WRITE');
|
||||
dba::lock('workerqueue');
|
||||
|
||||
// Are there waiting processes with a higher priority than the currently highest?
|
||||
$r = q("SELECT * FROM `workerqueue`
|
||||
|
|
@ -568,7 +590,7 @@ function poller_worker_process() {
|
|||
return $r;
|
||||
}
|
||||
} else {
|
||||
dba::e('LOCK TABLES `workerqueue` WRITE');
|
||||
dba::lock('workerqueue');
|
||||
}
|
||||
|
||||
// If there is no result (or we shouldn't pass lower processes) we check without priority limit
|
||||
|
|
@ -578,7 +600,7 @@ function poller_worker_process() {
|
|||
|
||||
// We only unlock the tables here, when we got no data
|
||||
if (!dbm::is_result($r)) {
|
||||
dba::e('UNLOCK TABLES');
|
||||
dba::unlock();
|
||||
}
|
||||
|
||||
return $r;
|
||||
|
|
@ -598,7 +620,7 @@ function poller_claim_process($queue) {
|
|||
|
||||
$success = dba::update('workerqueue', array('executed' => datetime_convert(), 'pid' => $mypid),
|
||||
array('id' => $queue["id"], 'pid' => 0));
|
||||
dba::e('UNLOCK TABLES');
|
||||
dba::unlock();
|
||||
|
||||
if (!$success) {
|
||||
logger("Couldn't update queue entry ".$queue["id"]." - skip this execution", LOGGER_DEBUG);
|
||||
|
|
@ -729,5 +751,7 @@ if (array_search(__file__,get_included_files())===0){
|
|||
|
||||
get_app()->end_process();
|
||||
|
||||
Lock::remove('poller_worker');
|
||||
|
||||
killme();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -17,7 +17,7 @@ function pubsubpublish_run(&$argv, &$argc){
|
|||
|
||||
foreach ($r as $rr) {
|
||||
logger("Publish feed to ".$rr["callback_url"], LOGGER_DEBUG);
|
||||
proc_run(PRIORITY_HIGH, 'include/pubsubpublish.php', $rr["id"]);
|
||||
proc_run(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), 'include/pubsubpublish.php', $rr["id"]);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -27,7 +27,7 @@ function queue_run(&$argv, &$argc){
|
|||
logger('queue: start');
|
||||
|
||||
// Handling the pubsubhubbub requests
|
||||
proc_run(PRIORITY_HIGH,'include/pubsubpublish.php');
|
||||
proc_run(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), 'include/pubsubpublish.php');
|
||||
|
||||
$r = q("SELECT `queue`.*, `contact`.`name`, `contact`.`uid` FROM `queue`
|
||||
INNER JOIN `contact` ON `queue`.`cid` = `contact`.`id`
|
||||
|
|
@ -51,7 +51,7 @@ function queue_run(&$argv, &$argc){
|
|||
if (dbm::is_result($r)) {
|
||||
foreach ($r as $q_item) {
|
||||
logger('Call queue for id '.$q_item['id']);
|
||||
proc_run(PRIORITY_LOW, "include/queue.php", $q_item['id']);
|
||||
proc_run(array('priority' => PRIORITY_LOW, 'dont_fork' => true), "include/queue.php", $q_item['id']);
|
||||
}
|
||||
}
|
||||
return;
|
||||
|
|
|
|||
|
|
@ -1995,10 +1995,11 @@ function get_gcontact_id($contact) {
|
|||
if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS)))
|
||||
$contact["url"] = clean_contact_url($contact["url"]);
|
||||
|
||||
$r = q("SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 2",
|
||||
dba::lock('gcontact');
|
||||
$r = q("SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
|
||||
dbesc(normalise_link($contact["url"])));
|
||||
|
||||
if ($r) {
|
||||
if (dbm::is_result($r)) {
|
||||
$gcontact_id = $r[0]["id"];
|
||||
|
||||
// Update every 90 days
|
||||
|
|
@ -2036,17 +2037,13 @@ function get_gcontact_id($contact) {
|
|||
$doprobing = in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""));
|
||||
}
|
||||
}
|
||||
dba::unlock();
|
||||
|
||||
if ($doprobing) {
|
||||
logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
|
||||
proc_run(PRIORITY_LOW, 'include/gprobe.php', bin2hex($contact["url"]));
|
||||
}
|
||||
|
||||
if ((dbm::is_result($r)) AND (count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
|
||||
q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
|
||||
dbesc(normalise_link($contact["url"])),
|
||||
intval($gcontact_id));
|
||||
|
||||
return $gcontact_id;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -797,6 +797,8 @@ class App {
|
|||
* @return bool Is the limit reached?
|
||||
*/
|
||||
function max_processes_reached() {
|
||||
// Deactivated, needs more investigating if this check really makes sense
|
||||
return false;
|
||||
|
||||
if ($this->is_backend()) {
|
||||
$process = 'backend';
|
||||
|
|
|
|||
159
src/Util/Lock.php
Normal file
159
src/Util/Lock.php
Normal file
|
|
@ -0,0 +1,159 @@
|
|||
<?php
|
||||
|
||||
namespace Friendica\Util;
|
||||
|
||||
/**
|
||||
* @file src/Util/Lock.php
|
||||
* @brief Functions for preventing parallel execution of functions
|
||||
*
|
||||
*/
|
||||
|
||||
use Friendica\Core\Config;
|
||||
use Memcache;
|
||||
use dba;
|
||||
use dbm;
|
||||
|
||||
/**
|
||||
* @brief This class contain Functions for preventing parallel execution of functions
|
||||
*/
|
||||
class Lock {
|
||||
/**
|
||||
* @brief Check for memcache and open a connection if configured
|
||||
*
|
||||
* @return object|boolean The memcache object - or "false" if not successful
|
||||
*/
|
||||
private static function connectMemcache() {
|
||||
if (!function_exists('memcache_connect')) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!Config::get('system', 'memcache')) {
|
||||
return false;
|
||||
}
|
||||
|
||||
$memcache_host = Config::get('system', 'memcache_host', '127.0.0.1');
|
||||
$memcache_port = Config::get('system', 'memcache_port', 11211);
|
||||
|
||||
$memcache = new Memcache;
|
||||
|
||||
if (!$memcache->connect($memcache_host, $memcache_port)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return $memcache;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Sets a lock for a given name
|
||||
*
|
||||
* @param string $fn_name Name of the lock
|
||||
* @param integer $timeout Seconds until we give up
|
||||
*
|
||||
* @return boolean Was the lock successful?
|
||||
*/
|
||||
public static function set($fn_name, $timeout = 120) {
|
||||
$got_lock = false;
|
||||
$start = time();
|
||||
|
||||
$memcache = self::connectMemcache();
|
||||
if (is_object($memcache)) {
|
||||
$wait_sec = 0.2;
|
||||
$cachekey = get_app()->get_hostname().";lock:".$fn_name;
|
||||
|
||||
do {
|
||||
$lock = $memcache->get($cachekey);
|
||||
|
||||
if (!is_bool($lock)) {
|
||||
$pid = (int)$lock;
|
||||
|
||||
// When the process id isn't used anymore, we can safely claim the lock for us.
|
||||
// Or we do want to lock something that was already locked by us.
|
||||
if (!posix_kill($pid, 0) OR ($pid == getmypid())) {
|
||||
$lock = false;
|
||||
}
|
||||
}
|
||||
if (is_bool($lock)) {
|
||||
$memcache->set($cachekey, getmypid(), MEMCACHE_COMPRESSED, 300);
|
||||
$got_lock = true;
|
||||
}
|
||||
if (!$got_lock AND ($timeout > 0)) {
|
||||
usleep($wait_sec * 1000000);
|
||||
}
|
||||
} while (!$got_lock AND ((time() - $start) < $timeout));
|
||||
|
||||
return $got_lock;
|
||||
}
|
||||
|
||||
$wait_sec = 2;
|
||||
|
||||
do {
|
||||
dba::lock('locks');
|
||||
$lock = dba::select('locks', array('locked', 'pid'), array('name' => $fn_name), array('limit' => 1));
|
||||
|
||||
if (dbm::is_result($lock)) {
|
||||
if ($lock['locked']) {
|
||||
// When the process id isn't used anymore, we can safely claim the lock for us.
|
||||
if (!posix_kill($lock['pid'], 0)) {
|
||||
$lock['locked'] = false;
|
||||
}
|
||||
// We want to lock something that was already locked by us? So we got the lock.
|
||||
if ($lock['pid'] == getmypid()) {
|
||||
$got_lock = true;
|
||||
}
|
||||
}
|
||||
if (!$lock['locked']) {
|
||||
dba::update('locks', array('locked' => true, 'pid' => getmypid()), array('name' => $fn_name));
|
||||
$got_lock = true;
|
||||
}
|
||||
} elseif (!dbm::is_result($lock)) {
|
||||
dba::insert('locks', array('name' => $fn_name, 'locked' => true, 'pid' => getmypid()));
|
||||
$got_lock = true;
|
||||
}
|
||||
|
||||
dba::unlock();
|
||||
|
||||
if (!$got_lock AND ($timeout > 0)) {
|
||||
sleep($wait_sec);
|
||||
}
|
||||
} while (!$got_lock AND ((time() - $start) < $timeout));
|
||||
|
||||
return $got_lock;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Removes a lock if it was set by us
|
||||
*
|
||||
* @param string $fn_name Name of the lock
|
||||
*/
|
||||
public static function remove($fn_name) {
|
||||
$memcache = self::connectMemcache();
|
||||
if (is_object($memcache)) {
|
||||
$cachekey = get_app()->get_hostname().";lock:".$fn_name;
|
||||
$lock = $memcache->get($cachekey);
|
||||
|
||||
if (!is_bool($lock)) {
|
||||
if ((int)$lock == getmypid()) {
|
||||
$memcache->delete($cachekey);
|
||||
}
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
dba::update('locks', array('locked' => false, 'pid' => 0), array('name' => $fn_name, 'pid' => getmypid()));
|
||||
return;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Removes all lock that were set by us
|
||||
*/
|
||||
public static function removeAll() {
|
||||
$memcache = self::connectMemcache();
|
||||
if (is_object($memcache)) {
|
||||
// We cannot delete all cache entries, but this doesn't matter with memcache
|
||||
return;
|
||||
}
|
||||
|
||||
dba::update('locks', array('locked' => false, 'pid' => 0), array('pid' => getmypid()));
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
<?php
|
||||
|
||||
define('UPDATE_VERSION' , 1227);
|
||||
define('UPDATE_VERSION' , 1228);
|
||||
|
||||
/**
|
||||
*
|
||||
|
|
|
|||
Loading…
Reference in a new issue