ACE/ace/OS_NS_errno.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file   OS_NS_errno.h
   6  *
   7  *  @author Douglas C. Schmidt <d.schmidt@vanderbilt.edu>
   8  *  @author Jesper S. M|ller<stophph@diku.dk>
   9  *  @author and a cast of thousands...
  10  *
  11  *  Originally in OS.h.
  12  */
  13 //=============================================================================
  14
  15 #ifndef ACE_OS_NS_ERRNO_H
  16 # define ACE_OS_NS_ERRNO_H
  17
  18 # include /**/ "ace/pre.h"
  19
  20 # include "ace/config-lite.h"
  21
  22 # if !defined (ACE_LACKS_PRAGMA_ONCE)
  23 #  pragma once
  24 # endif /* ACE_LACKS_PRAGMA_ONCE */
  25
  26 #include "ace/os_include/os_errno.h"
  27 #include /**/ "ace/ACE_export.h"
  28
  29 #if defined (ACE_EXPORT_MACRO)
  30 #  undef ACE_EXPORT_MACRO
  31 #endif
  32 #define ACE_EXPORT_MACRO ACE_Export
  33
  34 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  35
  36 namespace ACE_OS {
  37
  38   ACE_NAMESPACE_INLINE_FUNCTION
  39   int last_error (void);
  40
  41   ACE_NAMESPACE_INLINE_FUNCTION
  42   void last_error (int error);
  43
  44   ACE_NAMESPACE_INLINE_FUNCTION
  45   int set_errno_to_last_error (void);
  46
  47   ACE_NAMESPACE_INLINE_FUNCTION
  48   int set_errno_to_wsa_last_error (void);
  49
  50 #ifdef ACE_MQX
  51   int mqx_error_to_errno(int mqx_error);
  52 #endif
  53
  54 } /* namespace ACE_OS */
  55
  56 #if defined (ACE_HAS_WINCE_BROKEN_ERRNO)
  57 /**
  58  * @class ACE_CE_Errno
  59  *
  60  * Some versions of CE don't support @c errno and some versions'
  61  * implementations are busted.  So we implement our own.
  62  * Our implementation takes up one Tls key, however, it does not
  63  * allocate memory from the heap so there's no problem with cleaning
  64  * up the errno when a thread exit.
  65  */
  66 class ACE_Export ACE_CE_Errno
  67 {
  68 public:
  69   ACE_CE_Errno () {}
  70   static void init ();
  71   static void fini ();
  72   static ACE_CE_Errno *instance ();
  73
  74   operator int (void) const;
  75   int operator= (int);
  76
  77 private:
  78   static ACE_CE_Errno *instance_;
  79   static DWORD errno_key_;
  80 };
  81
  82 # define errno (* (ACE_CE_Errno::instance ()))
  83 #endif /* ACE_HAS_WINCE_BROKEN_ERRNO */
  84
  85 #if defined (ACE_HAS_WINCE_BROKEN_ERRNO)
  86 #  define ACE_ERRNO_TYPE ACE_CE_Errno
  87 #  define ACE_ERRNO_GET ACE_CE_Errno::instance ()->operator int()
  88 #else
  89 #  if !defined (ACE_ERRNO_TYPE)
  90 #   define ACE_ERRNO_TYPE int
  91 #  endif  /* !ACE_ERRNO_TYPE */
  92 #  define ACE_ERRNO_GET errno
  93 #endif /* ACE_HAS_WINCE_BROKEN_ERRNO */
  94
  95 ACE_END_VERSIONED_NAMESPACE_DECL
  96
  97 # if defined (ACE_HAS_INLINED_OSCALLS)
  98 #   if defined (ACE_INLINE)
  99 #     undef ACE_INLINE
 100 #   endif /* ACE_INLINE */
 101 #   define ACE_INLINE inline
 102 #   include "ace/OS_NS_errno.inl"
 103 # endif /* ACE_HAS_INLINED_OSCALLS */
 104
 105 # include /**/ "ace/post.h"
 106 #endif /* ACE_OS_NS_ERRNO_H */