ppdc/ppdc-shared.cxx

   1 //
   2 // Shared data class for the CUPS PPD Compiler.
   3 //
   4 // Copyright 2007-2009 by Apple Inc.
   5 // Copyright 2002-2005 by Easy Software Products.
   6 //
   7 // These coded instructions, statements, and computer programs are the
   8 // property of Apple Inc. and are protected by Federal copyright
   9 // law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  10 // which should have been included with this file.  If this file is
  11 // missing or damaged, see the license at "http://www.cups.org/".
  12 //
  13
  14 //
  15 // Include necessary headers...
  16 //
  17
  18 #include "ppdc-private.h"
  19
  20
  21 //
  22 // 'ppdcShared::ppdcShared()' - Create shared data.
  23 //
  24
  25 ppdcShared::ppdcShared()
  26 {
  27   use = 1;
  28 }
  29
  30
  31 //
  32 // 'ppdcShared::~ppdcShared()' - Destroy shared data.
  33 //
  34
  35 ppdcShared::~ppdcShared()
  36 {
  37 }
  38
  39
  40 //
  41 // 'ppdcShared::release()' - Decrement the use count and delete as needed.
  42 //
  43
  44 void
  45 ppdcShared::release(void)
  46 {
  47   DEBUG_printf(("%s: %p release use=%d", class_name(), this, use));
  48
  49   use --;
  50
  51 #ifdef DEBUG
  52   if (use < 0)
  53   {
  54     fprintf(stderr, "ERROR: Over-release of %s: %p\n", class_name(), this);
  55     abort();
  56   }
  57 #endif /* DEBUG */
  58
  59   if (use == 0)
  60     delete this;
  61 }
  62
  63
  64 //
  65 // 'ppdcShared::retain()' - Increment the use count for this data.
  66 //
  67
  68 void
  69 ppdcShared::retain()
  70 {
  71   use ++;
  72
  73   DEBUG_printf(("%s: %p retain use=%d", class_name(), this, use));
  74 }