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allow polling to mostly survive minor memory shortages.

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This commit is contained in:
Friendika 2011-06-30 21:56:07 -07:00
parent 84ee783a2a
commit 481cd708ac
3 changed files with 49 additions and 5 deletions
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32
include/poller.php
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@ -2,6 +2,7 @@
require_once("boot.php");
function poller_run($argv, $argc){
global $a, $db;
@ -47,18 +48,26 @@ function poller_run($argv, $argc){
proc_run('php','include/expire.php');
}
// clear old cache
q("DELETE FROM `cache` WHERE `updated` < '%s'",
dbesc(datetime_convert('UTC','UTC',"now - 30 days")));
$manual_id = 0;
$generation = 0;
$hub_update = false;
$force = false;
$restart = false;
if(($argc > 1) && ($argv[1] == 'force'))
$force = true;
if(($argc > 1) && ($argv[1] == 'restart')) {
$restart = true;
$generation = intval($argv[2]);
if(! $generation)
killme();
}
if(($argc > 1) && intval($argv[1])) {
$manual_id = intval($argv[1]);
$force = true;
@ -70,7 +79,8 @@ function poller_run($argv, $argc){
$d = datetime_convert();
call_hooks('cron', $d);
if(! $restart)
call_hooks('cron', $d);
$contacts = q("SELECT `id` FROM `contact`
@ -95,7 +105,7 @@ function poller_run($argv, $argc){
continue;
foreach($res as $contact) {
logger('processing a contact');
$xml = false;
if($manual_id)
@ -154,6 +164,22 @@ function poller_run($argv, $argc){
continue;
}
// Check to see if we are running out of memory - if so spawn a new process and kill this one
$avail_memory = return_bytes(ini_get('memory_limit'));
$memused = memory_get_peak_usage(true);
if(intval($avail_memory)) {
if(($memused / $avail_memory) > 0.95) {
if($generation + 1 > 10) {
logger('poller: maximum number of spawns exceeded. Terminating.');
killme();
}
logger('poller: memory exceeded. ' . $memused . ' bytes used. Spawning new poll.');
proc_run('php', 'include/poller.php', 'restart', (string) $generation + 1);
killme();
}
}
$importer_uid = $contact['uid'];
$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",