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authorRoland McGrath <roland@gnu.org>1996-02-22 15:52:20 +0000
committerRoland McGrath <roland@gnu.org>1996-02-22 15:52:20 +0000
commita182affdd948423d4779f848954e411c94f41a54 (patch)
tree3043f2eb9c95c6127b159c62174271422ff8327b /sysdeps/unix/alarm.c
parentf2e235b9b807706f12636b1d194a61c14e400e65 (diff)
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Wed Feb 21 02:25:07 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> cvs/libc-960226 cvs/libc-960225 cvs/libc-960224 cvs/libc-960223
	* Rules (others): Depend on $(extra-objs), $(install-lib),
	$(install-bin), $(install-sbin), in object directory.

	* Makeconfig (link-libc): Don't pass -rpath option with default
	path, since ld.so should use the same default.
	* Makerules (build-shlib): Likewise.

	* Makerules (make-target-directory): Use mkinstalldirs.

	* sysdeps/mach/i386/sysdep.h: Include unix/i386/sysdep.h to
	redefine ENTRY et al.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (NO_UNDERSCORES, ENTRY):
	Macros removed.  The code in unix/i386/sysdep.h should now suffice.

	* sysdeps/unix/i386/sysdep.h (ALIGNARG): New macro, defns for
	[HAVE_ELF] and not.
	(ENTRY): Use it in .align directive.
	(CALL_MCOUNT): New macro, empty unless [PROF].
	(ENTRY): Do CALL_MCOUNT just after the label.

	* Makeconfig (CPPFLAGS-.po): New variable, use -DPROF so assembly
	code can call mcount.

Tue Feb 20 23:05:16 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>

	* time/private.h, time/zdump.c, time/zic.c: Updated verbatim from ADO;
	translation markings are now integrated in his distribution.

	* stdlib/strtod.c (round_and_return): Add missing (mp_limb) 1 cast.

	* po: New directory where `LANG.po' files for message translations
	will reside.
	* po/SYS_libc.pot: New file, template of message strings as in source.
	* MakeTAGS: New rules to build po/SYS_libc.pot automatically from
	the source using xgettext.
	* Makerules ($(..)po/%.pot): New rule.
	* manual/Makefile (../po/manual.pot): New target, make it empty.

	* sysdeps/unix/bsd/alarm.c: Moved to sysdeps/unix/alarm.c.
	* sysdeps/unix/bsd/nice.c: Moved to sysdeps/unix/nice.c.
	* sysdeps/unix/bsd/stime.c: Moved to sysdeps/unix/stime.c.
	* sysdeps/unix/bsd/time.c: Moved to sysdeps/unix/time.c.
	* sysdeps/unix/bsd/utime.c: Moved to sysdeps/unix/utime.c.
Diffstat (limited to 'sysdeps/unix/alarm.c')
-rw-r--r--sysdeps/unix/alarm.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/unix/alarm.c b/sysdeps/unix/alarm.c
new file mode 100644
index 0000000000..7743256a09
--- /dev/null
+++ b/sysdeps/unix/alarm.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+/* Schedule an alarm.  In SECONDS seconds, the process will get a SIGALRM.
+   If SECONDS is zero, any currently scheduled alarm will be cancelled.
+   The function returns the number of seconds remaining until the last
+   alarm scheduled would have signaled, or zero if there wasn't one.
+   There is no return value to indicate an error, but you can set `errno'
+   to 0 and check its value after calling `alarm', and this might tell you.
+   The signal may come late due to processor scheduling.  */
+unsigned int
+DEFUN(alarm, (seconds), unsigned int seconds)
+{
+  struct itimerval old, new;
+
+  new.it_interval.tv_usec = 0;
+  new.it_interval.tv_sec = 0;
+  new.it_value.tv_usec = 0;
+  new.it_value.tv_sec = (long int) seconds;
+  if (__setitimer(ITIMER_REAL, &new, &old) < 0)
+    return 0;
+
+  return (old.it_value.tv_sec + (old.it_value.tv_usec + 999999) / 1000000);
+}