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/* Host support routines for MinGW, for GDB, the GNU debugger.

   Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"

#include "event-loop.h"

#include "gdb_string.h"

#include "gdb_select.h"

/* The strerror() function can return NULL for errno values that are

   out of range.  Provide a "safe" version that always returns a

   printable string. */

char *

safe_strerror (int errnum)

{

  char *msg;

  msg = strerror (errnum);

  if (msg == NULL)

    {

      static char buf[32];

      xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);

      msg = buf;

    }

  return (msg);

}

/* Wrapper for select.  Nothing special needed on POSIX platforms.  */

int

gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,

            struct timeval *timeout)

{

  return select (n, readfds, writefds, exceptfds, timeout);

}

/* Wrapper for the body of signal handlers.  Nothing special needed on

   POSIX platforms.  */

void

gdb_call_async_signal_handler (struct async_signal_handler *handler,

                               int immediate_p)

{

  if (immediate_p)

    call_async_signal_handler (handler);

  else

    mark_async_signal_handler (handler);

}