extend PBD::ID API to allow construction and operator== using uint64_t

[ardour.git] / libs / pbd / pbd / id.h

diff --git a/libs/pbd/pbd/id.h b/libs/pbd/pbd/id.h
index 95ac00bed071759e0beaa88690cf34033b7608c8..a597b6512b471397973225cb3132c41fbb3fb9c7 100644 (file)
--- a/libs/pbd/pbd/id.h
+++ b/libs/pbd/pbd/id.h
@@ -1,34 +1,80 @@
+/*
+    Copyright (C) 2000-2007 Paul Davis
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
 #ifndef __pbd_id_h__
 #define __pbd_id_h__
 
-#include <uuid/uuid.h>
+#include <stdint.h>
 #include <string>
 
+#include <glibmm/threads.h>
+
+#include "pbd/libpbd_visibility.h"
+
 namespace PBD {
 
-class ID {
+/** a unique ID to identify objects numerically */
+class LIBPBD_API ID {
   public:
        ID ();
        ID (std::string);
-       
-       bool operator== (const ID& other) const;
+       ID (const ID&);
+       ID (uint64_t);
+
+       void reset ();
+
+       bool operator== (const ID& other) const {
+               return _id == other._id;
+       }
+
        bool operator!= (const ID& other) const {
-               return !operator== (other);
+               return _id != other._id;
        }
-       ID& operator= (std::string); 
+
+       bool operator== (const std::string&) const;
+       bool operator== (uint64_t n) const {
+               return _id == n;
+       }
+
+       ID& operator= (std::string);
+       ID& operator= (const ID&);
 
        bool operator< (const ID& other) const {
-               return memcmp (id, other.id, sizeof (id)) < 0;
+               return _id < other._id;
        }
 
-       void print (char* buf) const;
-       
+       std::string to_s () const;
+
+       static uint64_t counter() { return _counter; }
+       static void init_counter (uint64_t val) { _counter = val; }
+       static void init ();
+
   private:
-       uuid_t id;
-       int string_assign (std::string);
+       uint64_t _id;
+       bool string_assign (std::string);
+
+       static Glib::Threads::Mutex* counter_lock;
+       static uint64_t _counter;
 };
 
 }
-std::ostream& operator<< (std::ostream& ostr, const PBD::ID&);
+
+LIBPBD_API std::ostream& operator<< (std::ostream& ostr, const PBD::ID&);
 
 #endif /* __pbd_id_h__ */