ACE/ace/os_include/os_time.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file    os_time.h
   6  *
   7  *  time types
   8  *
   9  *  @author Don Hinton <dhinton@dresystems.com>
  10  *  @author This code was originally in various places including ace/OS.h.
  11  */
  12 //=============================================================================
  13
  14 #ifndef ACE_OS_INCLUDE_OS_TIME_H
  15 #define ACE_OS_INCLUDE_OS_TIME_H
  16
  17 #include /**/ "ace/pre.h"
  18
  19 #include /**/ "ace/config-lite.h"
  20
  21 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  22 # pragma once
  23 #endif /* ACE_LACKS_PRAGMA_ONCE */
  24
  25 // @todo should we include anything from signal.h?
  26 #include "ace/os_include/sys/os_types.h"
  27
  28 // To get the proper select() signature, this is required for maybe other platforms
  29 // that offer both int and fdset forms of select().
  30 #if !defined (ACE_LACKS_SYS_TIME_H)
  31 #  include /**/ <sys/time.h>
  32 #endif /* !ACE_LACKS_SYS_TIME_H */
  33
  34 #include /**/ <time.h>
  35
  36 #if defined (ACE_USES_STD_NAMESPACE_FOR_STDC_LIB) && \
  37             (ACE_USES_STD_NAMESPACE_FOR_STDC_LIB != 0)
  38 using std::tm;
  39 # if defined (ACE_WIN32)
  40 using std::_timezone;
  41 # else
  42 using std::timezone;
  43 # endif /* ACE_WIN32 */
  44 using std::difftime;
  45 #endif /* ACE_USES_STD_NAMESPACE_FOR_STDC_LIB */
  46
  47 # if !defined (ACE_HAS_POSIX_TIME)
  48 // Definition per POSIX.
  49 typedef struct timespec
  50 {
  51   /// Seconds
  52   time_t tv_sec;
  53   /// Nanoseconds
  54   long tv_nsec;
  55 } timespec_t;
  56 # endif /* !ACE_HAS_POSIX_TIME */
  57
  58 # if defined(ACE_LACKS_TIMESPEC_T)
  59 typedef struct timespec timespec_t;
  60 # endif /* ACE_LACKS_TIMESPEC_T */
  61
  62 // Place all additions (especially function declarations) within extern "C" {}
  63 #ifdef __cplusplus
  64 extern "C"
  65 {
  66 #endif /* __cplusplus */
  67
  68 // There are a lot of threads-related macro definitions in the config files.
  69 // They came in at different times and from different places and platform
  70 // requirements as threads evolved.  They are probably not all needed - some
  71 // overlap or are otherwise confused.  This is an attempt to start
  72 // straightening them out.
  73 #if defined (ACE_HAS_PTHREADS)    /* POSIX.1c threads (pthreads) */
  74    // ... and 2-parameter asctime_r and ctime_r
  75 #  if !defined (ACE_HAS_2_PARAM_ASCTIME_R_AND_CTIME_R) && !defined (ACE_VXWORKS)
  76 #    define ACE_HAS_2_PARAM_ASCTIME_R_AND_CTIME_R
  77 #  endif
  78 #endif /* ACE_HAS_PTHREADS */
  79
  80 #if defined (ACE_LACKS_CONST_TIMESPEC_PTR)
  81 typedef struct timespec * ACE_TIMESPEC_PTR;
  82 #else
  83 typedef const struct timespec * ACE_TIMESPEC_PTR;
  84 #endif /* ACE_LACKS_CONST_TIMESPEC_PTR */
  85
  86 #ifdef __cplusplus
  87 }
  88 #endif /* __cplusplus */
  89
  90 #include /**/ "ace/post.h"
  91 #endif /* ACE_OS_INCLUDE_OS_TIME_H */