From b0d2bb1c4c16efed284ad598ca648a8e0f0ce053 Mon Sep 17 00:00:00 2001
From: Alexander Vasilyev <kwinto@kwinto.me>
Date: Wed, 17 Jan 2018 15:22:36 +0300
Subject: [PATCH 1/2] Filtering of non-existent signals. Added some new
 signals.

---
 src/Lifo/Daemon/Daemon.php | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/src/Lifo/Daemon/Daemon.php b/src/Lifo/Daemon/Daemon.php
index e4aed77..5cabb2e 100644
--- a/src/Lifo/Daemon/Daemon.php
+++ b/src/Lifo/Daemon/Daemon.php
@@ -1957,17 +1957,33 @@ public static function findPhp($includeArgs = true)
         return $phpPath;
     }
 
+    /**
+     * Return available signals (IPC)
+     *
+     * @return array
+     */
     private function getSignals()
     {
-        return [
+        $signals = [
             // primary signals handled by the daemon
-            SIGTERM, SIGINT, SIGUSR1, SIGHUP, SIGCHLD,
+            'SIGTERM', 'SIGINT', 'SIGUSR1', 'SIGHUP', 'SIGCHLD',
 
             // other signals that can be caught by setting an event handler
-            SIGUSR2, SIGQUIT, SIGILL, SIGTRAP, SIGABRT, SIGIOT, SIGBUS, SIGFPE, SIGSEGV, SIGPIPE, SIGALRM,
-            SIGCONT, SIGTSTP, SIGTTIN, SIGTTOU, SIGURG, SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF,
-            SIGWINCH, SIGIO, SIGPOLL, SIGSYS, SIGBABY, SIGPWR
+            'SIGUSR2',   'SIGQUIT',   'SIGILL',    'SIGTRAP', 'SIGABRT', 'SIGIOT',
+            'SIGBUS',    'SIGFPE',    'SIGSEGV',   'SIGPIPE', 'SIGALRM', 'SIGCONT',
+            'SIGTSTP',   'SIGTTIN',   'SIGTTOU',   'SIGURG',  'SIGXCPU', 'SIGXFSZ',
+            'SIGVTALRM', 'SIGPROF',   'SIGWINCH',  'SIGIO',   'SIGPOLL', 'SIGSYS',
+            'SIGBABY',   'SIGPWR',    'SIGEMT',    'SIGINFO', 'SIGPWR',  'SIGLOST',
+            'SIGWINCH',  'SIGSTKFLT', 'SIGUNUSED', 'SIGCLD',  'SIGLWP',
         ];
+
+        $availableSignals = [];
+        foreach ($signals as $signal) {
+            if (defined($signal)) {
+                $availableSignals[$signal] = constant($signal);
+            }
+        }
+        return $availableSignals;
     }
 
     public function setupSignals($handler = null)

From 2d1040de2d46327ce2c730500230d87d5041cebf Mon Sep 17 00:00:00 2001
From: Alexander Vasilyev <kwinto@kwinto.me>
Date: Wed, 17 Jan 2018 16:21:51 +0300
Subject: [PATCH 2/2] Changed access level of getSignals func. Small typo fix.

---
 src/Lifo/Daemon/Daemon.php | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/Lifo/Daemon/Daemon.php b/src/Lifo/Daemon/Daemon.php
index 5cabb2e..c3cedd7 100644
--- a/src/Lifo/Daemon/Daemon.php
+++ b/src/Lifo/Daemon/Daemon.php
@@ -1962,19 +1962,19 @@ public static function findPhp($includeArgs = true)
      *
      * @return array
      */
-    private function getSignals()
+    protected function getSignals()
     {
         $signals = [
             // primary signals handled by the daemon
             'SIGTERM', 'SIGINT', 'SIGUSR1', 'SIGHUP', 'SIGCHLD',
 
             // other signals that can be caught by setting an event handler
-            'SIGUSR2',   'SIGQUIT',   'SIGILL',    'SIGTRAP', 'SIGABRT', 'SIGIOT',
-            'SIGBUS',    'SIGFPE',    'SIGSEGV',   'SIGPIPE', 'SIGALRM', 'SIGCONT',
-            'SIGTSTP',   'SIGTTIN',   'SIGTTOU',   'SIGURG',  'SIGXCPU', 'SIGXFSZ',
-            'SIGVTALRM', 'SIGPROF',   'SIGWINCH',  'SIGIO',   'SIGPOLL', 'SIGSYS',
-            'SIGBABY',   'SIGPWR',    'SIGEMT',    'SIGINFO', 'SIGPWR',  'SIGLOST',
-            'SIGWINCH',  'SIGSTKFLT', 'SIGUNUSED', 'SIGCLD',  'SIGLWP',
+            'SIGUSR2', 'SIGQUIT', 'SIGILL', 'SIGTRAP', 'SIGABRT', 'SIGIOT',
+            'SIGBUS', 'SIGFPE', 'SIGSEGV', 'SIGPIPE', 'SIGALRM', 'SIGCONT',
+            'SIGTSTP', 'SIGTTIN', 'SIGTTOU', 'SIGURG', 'SIGXCPU', 'SIGXFSZ',
+            'SIGVTALRM', 'SIGPROF', 'SIGWINCH', 'SIGIO', 'SIGPOLL', 'SIGSYS',
+            'SIGBABY', 'SIGPWR', 'SIGEMT', 'SIGINFO', 'SIGPWR', 'SIGLOST',
+            'SIGWINCH', 'SIGSTKFLT', 'SIGUNUSED', 'SIGCLD', 'SIGLWP',
         ];
 
         $availableSignals = [];