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 } 69