[common/c-host] move agnostic code into common library

common/include/common/event.h

@@ -0,0 +1,37 @@
+/*
+Looking Glass - KVM FrameRelay (KVMFR) Client
+Copyright (C) 2017-2020 Geoffrey McRae <geoff@hostfission.com>
+https://looking-glass.hostfission.com
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#pragma once
+
+#include <stdbool.h>
+
+#define TIMEOUT_INFINITE ((unsigned int)~0)
+
+typedef struct LGEvent LGEvent;
+
+LGEvent * lgCreateEvent(bool autoReset, unsigned int msSpinTime);
+void      lgFreeEvent  (LGEvent * handle);
+bool      lgWaitEvent  (LGEvent * handle, unsigned int timeout);
+bool      lgWaitEvents (LGEvent * handles[], int count, bool waitAll, unsigned int timeout);
+bool      lgSignalEvent(LGEvent * handle);
+bool      lgResetEvent (LGEvent * handle);
+
+// os specific method to wrap/convert a native event into a LGEvent
+// for windows this is an event HANDLE
+LGEvent * lgWrapEvent(void * handle);