X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=lib%2Fspawningdaemon.php;h=ea09b6fb2f3016f67553cc683b254b537c9da1f6;hb=5c4723919fa757b3e14a59350415cfe53e0900d1;hp=862cbb4fa342b88b735a68c60481cfff26a620f5;hpb=5509f923ea48aecd1422aa1a4173fc85938e2b74;p=quix0rs-gnu-social.git

diff --git a/lib/spawningdaemon.php b/lib/spawningdaemon.php
index 862cbb4fa3..ea09b6fb2f 100644
--- a/lib/spawningdaemon.php
+++ b/lib/spawningdaemon.php
@@ -71,6 +71,8 @@ abstract class SpawningDaemon extends Daemon
      */
     function run()
     {
+        $this->initPipes();
+
         $children = array();
         for ($i = 1; $i <= $this->threads; $i++) {
             $pid = pcntl_fork();
@@ -90,18 +92,24 @@ abstract class SpawningDaemon extends Daemon
         while (count($children) > 0) {
             $status = null;
             $pid = pcntl_wait($status);
-            if ($pid > 0 && pcntl_wifexited($status)) {
-                $exitCode = pcntl_wexitstatus($status);
-
+            if ($pid > 0) {
                 $i = array_search($pid, $children);
                 if ($i === false) {
-                    $this->log(LOG_ERR, "Unrecognized child pid $pid exited with status $exitCode");
+                    $this->log(LOG_ERR, "Ignoring exit of unrecognized child pid $pid");
                     continue;
                 }
+                if (pcntl_wifexited($status)) {
+                    $exitCode = pcntl_wexitstatus($status);
+                    $info = "status $exitCode";
+                } else if (pcntl_wifsignaled($status)) {
+                    $exitCode = self::EXIT_ERR;
+                    $signal = pcntl_wtermsig($status);
+                    $info = "signal $signal";
+                }
                 unset($children[$i]);
 
                 if ($this->shouldRespawn($exitCode)) {
-                    $this->log(LOG_INFO, "Thread $i pid $pid exited with status $exitCode; respawing.");
+                    $this->log(LOG_INFO, "Thread $i pid $pid exited with $info; respawing.");
 
                     $pid = pcntl_fork();
                     if ($pid < 0) {
@@ -122,6 +130,34 @@ abstract class SpawningDaemon extends Daemon
         return true;
     }
 
+    /**
+     * Create an IPC socket pair which child processes can use to detect
+     * if the parent process has been killed.
+     */
+    function initPipes()
+    {
+        $sockets = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, 0);
+        if ($sockets) {
+            $this->parentWriter = $sockets[0];
+            $this->parentReader = $sockets[1];
+        } else {
+            $this->log(LOG_ERROR, "Couldn't create inter-process sockets");
+            exit(1);
+        }
+    }
+
+    /**
+     * Build an IOManager that simply ensures that we have a connection
+     * to the parent process open. If it breaks, the child process will
+     * die.
+     *
+     * @return ProcessManager
+     */
+    public function processManager()
+    {
+        return new ProcessManager($this->parentReader);
+    }
+
     /**
      * Determine whether to respawn an exited subprocess based on its exit code.
      * Otherwise we'll respawn all exits by default.
@@ -146,6 +182,8 @@ abstract class SpawningDaemon extends Daemon
      */
     protected function initAndRunChild($thread)
     {
+        // Close the writer end of our parent<->children pipe.
+        fclose($this->parentWriter);
         $this->set_id($this->get_id() . "." . $thread);
         $this->resetDb();
         $exitCode = $this->runThread();
@@ -166,7 +204,7 @@ abstract class SpawningDaemon extends Daemon
 
         // Reconnect main memcached, or threads will stomp on
         // each other and corrupt their requests.
-        $cache = common_memcache();
+        $cache = Cache::instance();
         if ($cache) {
             $cache->reconnect();
         }