X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=lib%2Fspawningdaemon.php;h=2f9f6e32e3de3310ed31a507f132f06ce46022a0;hb=9fe12be41eec8132fcfa6da2dc5fad926a932286;hp=fd9ae43556ddc019b73987ba7f67e876ae8305f9;hpb=81b6b58e33f55054b7e5dd546f06dbdb5696ed92;p=quix0rs-gnu-social.git

diff --git a/lib/spawningdaemon.php b/lib/spawningdaemon.php
index fd9ae43556..2f9f6e32e3 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();
@@ -128,6 +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.
@@ -152,6 +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();