Update.

2000-04-10  Ulrich Drepper  <drepper@redhat.com>

	* Versions.def (librt): Add GLIBC_2.2.
	* rt/Makefile (librt-routines): Add get_clockfreq, clock_getcpuclockid,
	clock_getres, clock_gettime, clock_settime, timer_create, timer_delete,
	timer_getoverr, timer_gettime, and timer_settime.
	* rt/Versions [librt] (GLIBC_2.2): Add clock_getres, clock_gettime,
	clock_settime, timer_create, timer_delete, timer_getoverrun,
	timer_gettime, and timer_settime.
	* sysdeps/generic/clock_getcpuclockid.c: New file.
	* sysdeps/generic/get_clockfreq.c: New file.
	* sysdeps/unix/i386/clock_getcpuclockid.c: New file.
	* sysdeps/unix/sysv/linux/i386/get_clockfreq.c: New file.
	* sysdeps/mach/hurd/i386/bits/time.h: New file.
	* sysdeps/unix/i386/i586/clock_getres.c: New file.
	* sysdeps/unix/i386/i586/clock_gettime.c: New file.
	* sysdeps/unix/i386/i686/Implies: New file.
	* sysdpes/unix/sysv/linux/i386/bits/time.h: New file.
	* time/Makefile (routines): Move clock_getres, clock_gettime,
	clock_settime, timer_create, timer_delete, timer_getoverr,
	timer_gettime, and timer_settime to rt/Makefile.
	* time/Versions [libc] (GLIBC_2.2): Remove clock_getres, clock_gettime,
	clock_settime, timer_create, timer_delete, timer_getoverrun,
	timer_gettime, and timer_settime.

	* sysdeps/mach/hurd/bits/time.h: Drop K&R compatibility.  Use __const__
	and not const as attribute name.

1 files changed, 73 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/get_clockfreq.c b/sysdeps/unix/sysv/linux/i386/get_clockfreq.c
new file mode 100644
index 0000000000..28f56c8fc3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/get_clockfreq.c
@@ -0,0 +1,73 @@
+/* Get frequency of the system processor.  i386/Linux version.
+   Copyright (C) 2000 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+unsigned long long int
+__get_clockfreq (void)
+{
+  /* We read the information from the /proc filesystem.  It contains at
+     least one line like
+	cpu MHz         : 497.840237
+     We search for this line and convert the number in an integer.  */
+  unsigned long long int result = 0ull;
+  int fd;
+
+  fd = open ("/proc/cpuinfo", O_RDONLY);
+  if (__builtin_expect (fd != -1, 1))
+    {
+      /* XXX AFAIK the /proc filesystem can generate "files" only up
+         to a size of 4096 bytes.  */
+      char buf[4096];
+      ssize_t n;
+
+      n = read (fd, buf, sizeof buf);
+      if (__builtin_expect (n, 1) > 0)
+	{
+	  char *mhz = memmem (buf, n, "cpu MHz", 7);
+
+	  if (__builtin_expect (mhz != NULL, 1))
+	    {
+	      char *endp = buf + n;
+
+	      /* Search for the beginning of the string.  */
+	      while (mhz < endp && (*mhz < '0' || *mhz > '9') && *mhz != '\n')
+		++mhz;
+
+	      while (mhz < endp && *mhz != '\n')
+		{
+		  if (*mhz >= '0' && *mhz <= '9')
+		    {
+		      result *= 10;
+		      result += *mhz - '0';
+		    }
+
+		  ++mhz;
+		}
+	    }
+	}
+
+      close (fd);
+    }
+
+  return result;
+}