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 // Licensed under Apache License v2.0.  See the file "LICENSE" for more information.
   8 //
   9
  10 //
  11 // Include necessary headers...
  12 //
  13
  14 #include "ppdc-private.h"
  15
  16
  17 //
  18 // 'ppdcShared::ppdcShared()' - Create shared data.
  19 //
  20
  21 ppdcShared::ppdcShared()
  22 {
  23   use = 1;
  24 }
  25
  26
  27 //
  28 // 'ppdcShared::~ppdcShared()' - Destroy shared data.
  29 //
  30
  31 ppdcShared::~ppdcShared()
  32 {
  33 }
  34
  35
  36 //
  37 // 'ppdcShared::release()' - Decrement the use count and delete as needed.
  38 //
  39
  40 void
  41 ppdcShared::release(void)
  42 {
  43   DEBUG_printf(("%s: %p release use=%d", class_name(), this, use));
  44
  45   use --;
  46
  47 #ifdef DEBUG
  48   if (use < 0)
  49   {
  50     fprintf(stderr, "ERROR: Over-release of %s: %p\n", class_name(), this);
  51     abort();
  52   }
  53 #endif /* DEBUG */
  54
  55   if (use == 0)
  56     delete this;
  57 }
  58
  59
  60 //
  61 // 'ppdcShared::retain()' - Increment the use count for this data.
  62 //
  63
  64 void
  65 ppdcShared::retain()
  66 {
  67   use ++;
  68
  69   DEBUG_printf(("%s: %p retain use=%d", class_name(), this, use));
  70 }