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authorUlrich Drepper <drepper@redhat.com>2003-12-11 20:46:47 +0000
committerUlrich Drepper <drepper@redhat.com>2003-12-11 20:46:47 +0000
commit092eb73ca2507c29adb37cd8075730e43c1e3794 (patch)
tree3898bbd02791720be314b47950e2c19a06c68a4c /sysdeps/unix
parent209454572369b17c5c038e2bf5295b789799e072 (diff)
downloadglibc-092eb73ca2507c29adb37cd8075730e43c1e3794.tar.gz
Update.
2003-12-01 Jes Sorensen <jes@wildopensource.com> * rt/tst-clock.c (do_test): Print message when skipping CLOCK_PROCESS_CPUTIME_ID test. * sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c: New file. Provide CLOCK_PROCESS_CPUTIME_ID only if /proc/sal/itc_drift is 0. peek_token. This avoids some copying and reduces code size. (init_dfa): Initialize map_notascii. (build_wcs_upper_buffer): If map_notascii is zero use simplified
Diffstat (limited to 'sysdeps/unix')
-rw-r--r--sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c b/sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c
new file mode 100644
index 0000000000..68e5763a8c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c
@@ -0,0 +1,65 @@
+/* Copyright (C) 2000, 2001, 2003 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+
+
+int
+clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
+{
+ /* We don't allow any process ID but our own. */
+ if (pid != 0 && pid != getpid ())
+ return EPERM;
+
+ static int itc_usable;
+ int retval = ENOENT;
+
+ if (__builtin_expect (itc_usable == 0, 0))
+ {
+ int newval = 1;
+ int fd = open ("/proc/sal/itc_drift", O_RDONLY);
+ if (__builtin_expect (fd != -1, 1))
+ {
+ char buf[16];
+ /* We expect the file to contain a single digit followed by
+ a newline. If the format changes we better not rely on
+ the file content. */
+ if (read (fd, buf, sizeof buf) != 2 || buf[0] != '0'
+ || buf[1] != '\n')
+ newval = -1;
+
+ close (fd);
+ }
+
+ itc_usable = newval;
+ }
+
+ if (itc_usable > 0)
+ {
+ /* Store the number. */
+ *clock_id = CLOCK_PROCESS_CPUTIME_ID;
+ retval = 0;
+ }
+
+ return retval;
+}