tfile_target::close: trace_fd can't be -1

[deliverable/binutils-gdb.git] / gdb / gdb_select.h

diff --git a/gdb/gdb_select.h b/gdb/gdb_select.h
index 1054d6e9868f92b599f9fad5289b3595b27323d1..69021ac28eae234dcf530018f4f6f8a835b76f3c 100644 (file)
--- a/gdb/gdb_select.h
+++ b/gdb/gdb_select.h
@@ -1,13 +1,12 @@
 /* Slightly more portable version of <sys/select.h>.
 
-   Copyright (C) 2006
-   Free Software Foundation, Inc.
+   Copyright (C) 2006-2020 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 2 of the License, or
+   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,
@@ -16,15 +15,15 @@
    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, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #if !defined(GDB_SELECT_H)
 #define GDB_SELECT_H
 
 #ifdef HAVE_SYS_SELECT_H
 #include <sys/select.h>
+#else
+#include "gdbsupport/gdb_sys_time.h"
 #endif
 
 #ifdef USE_WIN32API
@@ -34,4 +33,19 @@
 extern int gdb_select (int n, fd_set *readfds, fd_set *writefds,
                       fd_set *exceptfds, struct timeval *timeout);
 
+/* Convenience wrapper around gdb_select that returns -1/EINTR if
+   set_quit_flag is set, either on entry or from a signal handler or
+   from a different thread while select is blocked.  The quit flag is
+   not cleared on exit -- the caller is responsible to check it with
+   check_quit_flag or QUIT.
+
+   Note this does NOT return -1/EINTR if any signal handler other than
+   SIGINT runs, nor if the current SIGINT handler does not call
+   set_quit_flag.  */
+extern int interruptible_select (int n,
+                                fd_set *readfds,
+                                fd_set *writefds,
+                                fd_set *exceptfds,
+                                struct timeval *timeout);
+
 #endif /* !defined(GDB_SELECT_H) */