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configFlags.h
00001 // Filename: configFlags.h
00002 // Created by:  drose (21Oct04)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef CONFIGFLAGS_H
00016 #define CONFIGFLAGS_H
00017 
00018 #include "dtoolbase.h"
00019 #include "numeric_types.h"
00020 #include "atomicAdjust.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : ConfigFlags
00024 // Description : This class is the base class of both ConfigVariable
00025 //               and ConfigVariableCore.  It exists only to provide a
00026 //               convenient name scoping for some enumerated values
00027 //               common to both classes.
00028 ////////////////////////////////////////////////////////////////////
00029 class EXPCL_DTOOLCONFIG ConfigFlags {
00030 PUBLISHED:
00031   enum ValueType {
00032     VT_undefined,
00033     VT_list,
00034     VT_string,
00035     VT_filename,
00036     VT_bool,
00037     VT_int,
00038     VT_double,
00039     VT_enum,
00040     VT_search_path,
00041     VT_int64,
00042   };
00043 
00044   enum VariableFlags {
00045     // Trust level.  We have the bottom twelve bits reserved for a
00046     // trust level indicator; then the open and closed bits are a
00047     // special case.
00048     F_trust_level_mask  = 0x00000fff,
00049     F_open              = 0x00001000,
00050     F_closed            = 0x00002000,
00051 
00052     // F_dynamic means that the variable name is generated dynamically
00053     // (possibly from a very large pool) and should not be included in
00054     // the normal list of variable names.
00055     F_dynamic           = 0x00004000,
00056 
00057     // F_dconfig means that the variable was constructed from the
00058     // legacy DConfig system, rather than directly by the user.  You
00059     // shouldn't pass this in directly.
00060     F_dconfig           = 0x00008000,
00061   };
00062 
00063 protected:
00064   INLINE static bool is_cache_valid(AtomicAdjust::Integer local_modified);
00065   INLINE static void mark_cache_valid(AtomicAdjust::Integer &local_modified); 
00066   INLINE static AtomicAdjust::Integer initial_invalid_cache();
00067   INLINE static void invalidate_cache();
00068 
00069 private:
00070   static TVOLATILE AtomicAdjust::Integer _global_modified;
00071 };
00072 
00073 ostream &operator << (ostream &out, ConfigFlags::ValueType type);
00074 
00075 #include "configFlags.I"
00076 
00077 #endif
00078 
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