libbase/smart_ptr.h

   1 //
   2 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Free Software
   3 //   Foundation, Inc
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19 // Smart (ref-counting) pointer classes.  Uses "intrusive" approach:
  20 // the types pointed to must have add_ref() and drop_ref() methods.
  21 // Typically this is done by inheriting from a ref_counted class,
  22 // although the nice thing about templates is that no particular
  23 // ref-counted class is mandated.
  24
  25
  26 #ifndef SMART_PTR_H
  27 #define SMART_PTR_H
  28
  29 #include "ref_counted.h"
  30
  31 // TODO: drop all users of this macro, we _are_ using GC now
  32 #define GNASH_USE_GC 1
  33
  34 namespace gnash {
  35     class GcResource;
  36 }
  37
  38
  39 #define COMPILER_SUPPORTS_ARGUMENT_DEPENDENT_LOOKUP 1
  40 #ifdef COMPILER_SUPPORTS_ARGUMENT_DEPENDENT_LOOKUP
  41 namespace gnash {
  42 #else
  43 namespace boost {
  44 #endif
  45
  46 inline void
  47 intrusive_ptr_add_ref(const ref_counted* o)
  48 {
  49         o->add_ref();
  50 }
  51
  52 inline void
  53 intrusive_ptr_release(const ref_counted* o)
  54 {
  55         o->drop_ref();
  56 }
  57
  58 // These two should not be needed when we switch all GcResource
  59 // pointers to use the gc_ptr instead of the intrusive_ptr
  60
  61 inline void intrusive_ptr_add_ref(const GcResource* ) { }
  62 inline void intrusive_ptr_release(const GcResource* ) { }
  63
  64 } // namespace boost||gnash
  65
  66
  67 #endif // SMART_PTR_H
  68
  69
  70 // Local Variables:
  71 // mode: C++
  72 // c-basic-offset: 8
  73 // tab-width: 8
  74 // indent-tabs-mode: t
  75 // End: