dep/ACE_wrappers/ace/OS_NS_errno.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file   OS_NS_errno.h
   6  *
   7  *  $Id: OS_NS_errno.h 81286 2008-04-09 07:27:30Z johnnyw $
   8  *
   9  *  @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
  10  *  @author Jesper S. M|ller<stophph@diku.dk>
  11  *  @author and a cast of thousands...
  12  *
  13  *  Originally in OS.h.
  14  */
  15 //=============================================================================
  16
  17 #ifndef ACE_OS_NS_ERRNO_H
  18 # define ACE_OS_NS_ERRNO_H
  19
  20 # include /**/ "ace/pre.h"
  21
  22 # include "ace/config-lite.h"
  23
  24 # if !defined (ACE_LACKS_PRAGMA_ONCE)
  25 #  pragma once
  26 # endif /* ACE_LACKS_PRAGMA_ONCE */
  27
  28 #include "ace/os_include/os_errno.h"
  29 #include /**/ "ace/ACE_export.h"
  30
  31 #if defined (ACE_EXPORT_MACRO)
  32 #  undef ACE_EXPORT_MACRO
  33 #endif
  34 #define ACE_EXPORT_MACRO ACE_Export
  35
  36 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  37
  38 namespace ACE_OS {
  39
  40   ACE_NAMESPACE_INLINE_FUNCTION
  41   int last_error (void);
  42
  43   ACE_NAMESPACE_INLINE_FUNCTION
  44   void last_error (int error);
  45
  46   ACE_NAMESPACE_INLINE_FUNCTION
  47   int set_errno_to_last_error (void);
  48
  49   ACE_NAMESPACE_INLINE_FUNCTION
  50   int set_errno_to_wsa_last_error (void);
  51
  52 } /* namespace ACE_OS */
  53
  54 #if defined (ACE_HAS_WINCE_BROKEN_ERRNO)
  55 /**
  56  * @class ACE_CE_Errno
  57  *
  58  * Some versions of CE don't support @c errno and some versions'
  59  * implementations are busted.  So we implement our own.
  60  * Our implementation takes up one Tls key, however, it does not
  61  * allocate memory fromt the heap so there's no problem with cleanin
  62  * up the errno when a thread exit.
  63  */
  64 class ACE_Export ACE_CE_Errno
  65 {
  66 public:
  67   ACE_CE_Errno () {}
  68   static void init ();
  69   static void fini ();
  70   static ACE_CE_Errno *instance ();
  71
  72   operator int (void) const;
  73   int operator= (int);
  74
  75 private:
  76   static ACE_CE_Errno *instance_;
  77   static DWORD errno_key_;
  78 };
  79
  80 # define errno (* (ACE_CE_Errno::instance ()))
  81 #endif /* ACE_HAS_WINCE_BROKEN_ERRNO */
  82
  83 #if defined (ACE_HAS_WINCE_BROKEN_ERRNO)
  84 #  define ACE_ERRNO_TYPE ACE_CE_Errno
  85 #else
  86 #  define ACE_ERRNO_TYPE int
  87 #endif /* ACE_HAS_WINCE_BROKEN_ERRNO */
  88
  89 ACE_END_VERSIONED_NAMESPACE_DECL
  90
  91 # if defined (ACE_HAS_INLINED_OSCALLS)
  92 #   if defined (ACE_INLINE)
  93 #     undef ACE_INLINE
  94 #   endif /* ACE_INLINE */
  95 #   define ACE_INLINE inline
  96 #   include "ace/OS_NS_errno.inl"
  97 # endif /* ACE_HAS_INLINED_OSCALLS */
  98
  99 # include /**/ "ace/post.h"
 100 #endif /* ACE_OS_NS_ERRNO_H */