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author | Karl Heuer <kwzh@gnu.org> | 1995-01-23 23:03:37 +0000 |
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committer | Karl Heuer <kwzh@gnu.org> | 1995-01-23 23:03:37 +0000 |
commit | 06979d421a90e3d1b7557a9e34a0f6b3c04cb30e (patch) | |
tree | 3ba3453eb7fe72767a70e329415f9b9e4816ba44 /src/sysselect.h | |
parent | afef6d7ab9c0b59129920354a7bace744d02875b (diff) | |
download | emacs-06979d421a90e3d1b7557a9e34a0f6b3c04cb30e.tar.gz |
Initial revision
Diffstat (limited to 'src/sysselect.h')
-rw-r--r-- | src/sysselect.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/sysselect.h b/src/sysselect.h new file mode 100644 index 00000000000..139960031a8 --- /dev/null +++ b/src/sysselect.h @@ -0,0 +1,44 @@ +/* sysselect.h - System-dependent definitions for the select function. + Copyright (C) 1995 Free Software Foundation, Inc. + +This file is part of GNU Emacs. + +GNU Emacs 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, or (at your option) +any later version. + +GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#ifdef HAVE_SYS_SELECT +#include <sys/select.h> +#endif + +#ifdef FD_SET +#ifdef FD_SETSIZE +#define MAXDESC FD_SETSIZE +#else +#define MAXDESC 64 +#endif +#define SELECT_TYPE fd_set +#else /* no FD_SET */ +#define MAXDESC 32 +#define SELECT_TYPE int + +/* Define the macros to access a single-int bitmap of descriptors. */ +#define FD_SET(n, p) (*(p) |= (1 << (n))) +#define FD_CLR(n, p) (*(p) &= ~(1 << (n))) +#define FD_ISSET(n, p) (*(p) & (1 << (n))) +#define FD_ZERO(p) (*(p) = 0) +#endif /* no FD_SET */ + +#if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) +#define select sys_select +#endif |