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