From 623c84ae7414b18f7cea271a6dd0523f182ccdec Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Mon, 1 Apr 2019 19:39:16 +1100
Subject: [PATCH] AP_HAL_SITL: implement trap method

---
 libraries/AP_HAL_SITL/Util.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/libraries/AP_HAL_SITL/Util.h b/libraries/AP_HAL_SITL/Util.h
index 97f7010656..7895aa740b 100644
--- a/libraries/AP_HAL_SITL/Util.h
+++ b/libraries/AP_HAL_SITL/Util.h
@@ -6,6 +6,11 @@
 #include "Semaphores.h"
 #include "ToneAlarm_SF.h"
 
+#if !defined(__CYGWIN__) && !defined(__CYGWIN64__)
+#include <sys/types.h>
+#include <signal.h>
+#endif
+
 class HALSITL::Util : public AP_HAL::Util {
 public:
     Util(SITL_State *_sitlState) :
@@ -52,6 +57,17 @@ public:
 
     enum safety_state safety_switch_state(void) override;
 
+    bool trap() const override {
+#if defined(__CYGWIN__) || defined(__CYGWIN64__)
+        return false;
+#else
+        if (kill(0, SIGTRAP) == -1) {
+            return false;
+        }
+        return true;
+#endif
+    }
+
 private:
     SITL_State *sitlState;