1 /* Host support routines for MinGW, for GDB, the GNU debugger. 2 3 Copyright (C) 2006-2013 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 41 xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum); 42 msg = buf; 43 } 44 return (msg); 45 } 46 47 /* Wrapper for select. Nothing special needed on POSIX platforms. */ 48 49 int 50 gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 51 struct timeval *timeout) 52 { 53 return select (n, readfds, writefds, exceptfds, timeout); 54 } 55 56 /* Wrapper for the body of signal handlers. Nothing special needed on 57 POSIX platforms. */ 58 59 void 60 gdb_call_async_signal_handler (struct async_signal_handler *handler, 61 int immediate_p) 62 { 63 if (immediate_p) 64 call_async_signal_handler (handler); 65 else 66 mark_async_signal_handler (handler); 67 } 68