ACE/ace/Flag_Manip.cpp

   1 #include "ace/Flag_Manip.h"
   2
   3 #if defined (ACE_LACKS_FCNTL)
   4 #  include "ace/OS_NS_stropts.h"
   5 #  include "ace/OS_NS_errno.h"
   6 #endif /* ACE_LACKS_FCNTL */
   7
   8 #if defined (ACE_LACKS_IOCTL)
   9 #  include "ace/OS_NS_devctl.h"
  10 #endif
  11
  12 #if !defined (__ACE_INLINE__)
  13 #include "ace/Flag_Manip.inl"
  14 #endif /* __ACE_INLINE__ */
  15
  16 #if defined (CYGWIN32)
  17 #  include "ace/os_include/os_termios.h"
  18 #endif /* CYGWIN32 */
  19
  20 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  21
  22 // Flags are file status flags to turn on.
  23
  24 int
  25 ACE::set_flags (ACE_HANDLE handle, int flags)
  26 {
  27   ACE_TRACE ("ACE::set_flags");
  28 #if defined (ACE_LACKS_FCNTL)
  29   switch (flags)
  30     {
  31     case ACE_NONBLOCK:
  32       // nonblocking argument (1)
  33       // blocking:            (0)
  34       {
  35         int nonblock = 1;
  36 # if defined (ACE_LACKS_IOCTL)
  37         int dev_info;
  38         return ACE_OS::posix_devctl (handle, FIONBIO, &nonblock,
  39                                      sizeof nonblock, &dev_info);
  40 # else
  41         return ACE_OS::ioctl (handle, FIONBIO, &nonblock);
  42 # endif
  43       }
  44     default:
  45       ACE_NOTSUP_RETURN (-1);
  46     }
  47 #else
  48   int val = ACE_OS::fcntl (handle, F_GETFL, 0);
  49
  50   if (val == -1)
  51     return -1;
  52
  53   // Turn on flags.
  54   ACE_SET_BITS (val, flags);
  55
  56   if (ACE_OS::fcntl (handle, F_SETFL, val) == -1)
  57     return -1;
  58   else
  59     return 0;
  60 #endif /* ACE_LACKS_FCNTL */
  61 }
  62
  63 // Flags are the file status flags to turn off.
  64
  65 int
  66 ACE::clr_flags (ACE_HANDLE handle, int flags)
  67 {
  68   ACE_TRACE ("ACE::clr_flags");
  69 #if defined (ACE_LACKS_FCNTL)
  70   switch (flags)
  71     {
  72     case ACE_NONBLOCK:
  73       // nonblocking argument (1)
  74       // blocking:            (0)
  75       {
  76         int nonblock = 0;
  77 # if defined (ACE_LACKS_IOCTL)
  78         int dev_info;
  79         return ACE_OS::posix_devctl (handle, FIONBIO, &nonblock,
  80                                      sizeof nonblock, &dev_info);
  81 # else
  82         return ACE_OS::ioctl (handle, FIONBIO, &nonblock);
  83 # endif
  84       }
  85     default:
  86       ACE_NOTSUP_RETURN (-1);
  87     }
  88 #else
  89   int val = ACE_OS::fcntl (handle, F_GETFL, 0);
  90
  91   if (val == -1)
  92     return -1;
  93
  94   // Turn flags off.
  95   ACE_CLR_BITS (val, flags);
  96
  97   if (ACE_OS::fcntl (handle, F_SETFL, val) == -1)
  98     return -1;
  99   else
 100     return 0;
 101 #endif /* ACE_LACKS_FCNTL */
 102 }
 103
 104 ACE_END_VERSIONED_NAMESPACE_DECL