remove UUIDs as implemention of PBD::ID, use static counter (not finished - counter state not saved)

git-svn-id: svn://localhost/ardour2/trunk@671 d708f5d6-7413-0410-9779-e7cbd77b26cf

SConstruct

@@ -453,15 +453,6 @@ conf = Configure (libraries['flac'])
 conf.CheckLib ('FLAC', 'FLAC__stream_decoder_new')
 libraries['flac'] = conf.Finish ()
 
-#
-# Check for UUID stuff
-
-libraries['uuid'] = LibraryInfo ()
-
-conf = Configure (libraries['uuid'])
-conf.CheckLib ('uuid', 'uuid_generate')
-libraries['uuid'] = conf.Finish ()
-
 #
 # Check for liblo
 

gtk2_ardour/SConscript

@@ -42,7 +42,6 @@ gtkardour.Merge ([
     libraries['gdkmm2'],
     libraries['sigc2'],
     libraries['gtk2'],
-    libraries['uuid'],
     libraries['xml'],
     libraries['xslt'],
     libraries['soundtouch'],

libs/pbd/SConscript

@@ -50,7 +50,6 @@ if conf.CheckCHeader('execinfo.h'):
 pbd = conf.Finish()
 
 pbd.Merge ([ libraries['sigc2'],
-             libraries['uuid'],
              libraries['xml'],
              libraries['glibmm2'],
              libraries['glib2'] ])

libs/pbd/id.cc

@@ -1,17 +1,24 @@
 #include <ostream>
 #include <iostream>
+#include <stdio.h>
 
-#include <string.h>
+#ifndef __STDC_FORMAT_MACROS
-#include <uuid/uuid.h>
+#define __STDC_FORMAT_MACROS
+#endif
+#include <inttypes.h>
 
 #include <pbd/id.h>
 
 using namespace std;
 using namespace PBD;
 
+Glib::Mutex ID::counter_lock;
+uint64_t ID::_counter = 0;
+
 ID::ID ()
 {
-	uuid_generate (id);
+	Glib::Mutex::Lock lm (counter_lock);
+	id = _counter++;
 }
 
 ID::ID (string str)
@@ -22,33 +29,14 @@ ID::ID (string str)
 int
 ID::string_assign (string str)
 {
-	/* first check for old-style all-numeric ID's */
+	return sscanf (str.c_str(), "%" PRIu64, &id) != 0;
-
-	if (strcspn (str.c_str(), "0123456789") == 0) {
-		/* all chars are numeric. just render the existing ID into the space in 
-		   which we would otherwise store a UUID.
-		*/
-
-		memset (id, ' ', sizeof (id));
-		snprintf ((char*) id, sizeof (id), str.c_str());
-
-	} else {
-
-		/* OK, its UUID, probably */
-
-		if (uuid_parse (str.c_str(), id)) {
-			/* XXX error */
-			return -1;
-		}
-	}
-
-	return 0;
 }
 
 void
 ID::print (char* buf) const
 {
-	uuid_unparse (id, buf);
+	/* XXX sizeof buf is unknown. bad API design */
+	snprintf (buf, 16, "%" PRIu64, id);
 }
 
 ID&
@@ -58,16 +46,10 @@ ID::operator= (string str)
 	return *this;
 }
 
-bool
-ID::operator== (const ID& other) const
-{
-	return memcmp (id, other.id, sizeof (id)) == 0;
-}
-
 ostream&
 operator<< (ostream& ostr, const ID& id)
 {
-	char buf[37];
+	char buf[32];
 	id.print (buf);
 	ostr << buf;
 	return ostr;

libs/pbd/pbd/id.h

@@ -1,9 +1,11 @@
 #ifndef __pbd_id_h__
 #define __pbd_id_h__
 
-#include <uuid/uuid.h>
+#include <stdint.h>
 #include <string>
 
+#include <glibmm/thread.h>
+
 namespace PBD {
 
 class ID {
@@ -11,21 +13,31 @@ class ID {
 	ID ();
 	ID (std::string);
 	
-	bool operator== (const ID& other) const;
+	bool operator== (const ID& other) const {
-	bool operator!= (const ID& other) const {
+		return id == other.id; 
-		return !operator== (other);
 	}
+
+	bool operator!= (const ID& other) const {
+		return id != other.id;
+	}
+
 	ID& operator= (std::string); 
 
 	bool operator< (const ID& other) const {
-		return memcmp (id, other.id, sizeof (id)) < 0;
+		return id < other.id;
 	}
 
 	void print (char* buf) const;
 	
+	static uint64_t counter() { return _counter; }
+	static void init_counter (uint64_t val) { _counter = val; }
+
   private:
-	uuid_t id;
+	uint64_t id;
 	int string_assign (std::string);
+
+	static Glib::Mutex counter_lock;
+	static uint64_t _counter;
 };
 
 }