gdb/posix-hdep.c

   1 /* Host support routines for MinGW, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include "defs.h"
  22 #include "event-loop.h"
  23
  24 #include "gdb_string.h"
  25
  26 #include "gdb_select.h"
  27
  28 /* The strerror() function can return NULL for errno values that are
  29    out of range.  Provide a "safe" version that always returns a
  30    printable string.  */
  31
  32 char *
  33 safe_strerror (int errnum)
  34 {
  35   char *msg;
  36
  37   msg = strerror (errnum);
  38   if (msg == NULL)
  39     {
  40       static char buf[32];
  41
  42       xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
  43       msg = buf;
  44     }
  45   return (msg);
  46 }
  47
  48 /* Wrapper for select.  Nothing special needed on POSIX platforms.  */
  49
  50 int
  51 gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
  52             struct timeval *timeout)
  53 {
  54   return select (n, readfds, writefds, exceptfds, timeout);
  55 }
  56
  57 /* Wrapper for the body of signal handlers.  Nothing special needed on
  58    POSIX platforms.  */
  59
  60 void
  61 gdb_call_async_signal_handler (struct async_signal_handler *handler,
  62                                int immediate_p)
  63 {
  64   if (immediate_p)
  65     call_async_signal_handler (handler);
  66   else
  67     mark_async_signal_handler (handler);
  68 }