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authorUlrich Drepper <drepper@redhat.com>2000-06-26 18:12:12 +0000
committerUlrich Drepper <drepper@redhat.com>2000-06-26 18:12:12 +0000
commitc000cdad1aa963d190eed7494a7a3df82c91ae99 (patch)
tree52ac2d0000dbc256e7fa5994556de0336a0e6330 /sysdeps
parent5839de1d375531e35cda9dcf935e209ab68dd392 (diff)
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Update.
2000-06-26 Ulrich Drepper <drepper@redhat.com> * rt/Makefile (librt-routines): Add clock_nanosleep. * rt/Versions [GLIBC_2.2] (librt): Add clock_nanosleep. * sysdeps/generic/clock_nanosleep.c: New file. * sysdeps/unix/clock_nanosleep.c: New file. * sysdeps/unix/i386/i586/clock_nanosleep.c: New file. * time/time.h: Declare clock_nanosleep.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/generic/clock_nanosleep.c39
-rw-r--r--sysdeps/unix/clock_nanosleep.c81
-rw-r--r--sysdeps/unix/i386/i586/clock_nanosleep.c26
3 files changed, 146 insertions, 0 deletions
diff --git a/sysdeps/generic/clock_nanosleep.c b/sysdeps/generic/clock_nanosleep.c
new file mode 100644
index 0000000000..d2b1dcbc5f
--- /dev/null
+++ b/sysdeps/generic/clock_nanosleep.c
@@ -0,0 +1,39 @@
+/* High-resolution sleep with the specified clock. Stub 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 <errno.h>
+#include <sys/time.h>
+
+
+int
+clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
+ struct timespec *rem)
+{
+ if (__builtin_expect (req->tv_nsec, 0) < 0
+ || __builtin_expect (req->tv_nsec, 0) >= 1000000000)
+ return EINVAL;
+
+ if (flags != TIMER_ABSTIME && flags != 0)
+ return EINVAL;
+
+ /* Not implemented. */
+ return ENOSYS;
+}
+stub_warning (clock_nanosleep)
+#include <stub-tag.h>
diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/unix/clock_nanosleep.c
new file mode 100644
index 0000000000..a4d00d26d0
--- /dev/null
+++ b/sysdeps/unix/clock_nanosleep.c
@@ -0,0 +1,81 @@
+/* High-resolution sleep with the specified clock.
+ 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 <assert.h>
+#include <errno.h>
+#include <sys/time.h>
+
+
+#ifndef CLOCK_P
+# define CLOCK_P(clock) 0
+#endif
+
+
+/* This implementation assumes that these is only a `nanosleep' system
+ call. So we have to remap all other activities. */
+int
+clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
+ struct timespec *rem)
+{
+ struct timespec now;
+
+ if (__builtin_expect (req->tv_nsec, 0) < 0
+ || __builtin_expect (req->tv_nsec, 0) >= 1000000000)
+ return EINVAL;
+
+ /* If we got an absolute time, remap it. */
+ if (flags == TIMER_ABSTIME)
+ {
+ long int nsec;
+ long int sec;
+
+ /* Make sure we use safe data types. */
+ assert (sizeof (sec) >= sizeof (now.tv_sec));
+
+ /* Get the current time for this clock. */
+ if (clock_gettime (clock_id, &now) != 0)
+ return errno;
+
+ /* Compute the difference. */
+ nsec = req->tv_nsec - now.tv_nsec;
+ sec = req->tv_sec - now.tv_sec - (nsec < 0);
+ if (sec < 0)
+ /* The time has already elapsed. */
+ return 0;
+
+ now.tv_sec = sec;
+ now.tv_nsec = nsec + (nsec < 0 ? 1000000000 : 0);
+
+ /* From now on this is our time. */
+ req = &now;
+
+ /* Make sure we are not modifying the struct pointed to by REM. */
+ rem = NULL;
+ }
+ else if (__builtin_expect (flags, 0) != 0)
+ return EINVAL;
+ else if (clock_id != CLOCK_REALTIME)
+ {
+ /* Make sure the clock ID is correct. */
+ if (__builtin_expect (! CLOCK_P (clock_id), 0))
+ return EINVAL;
+ }
+
+ return __builtin_expect (nanosleep (req, rem), 0) ? errno : 0;
+}
diff --git a/sysdeps/unix/i386/i586/clock_nanosleep.c b/sysdeps/unix/i386/i586/clock_nanosleep.c
new file mode 100644
index 0000000000..8cd3d4dec3
--- /dev/null
+++ b/sysdeps/unix/i386/i586/clock_nanosleep.c
@@ -0,0 +1,26 @@
+/* High-resolution sleep with the specified clock.
+ 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. */
+
+/* Additional definitions for the x86 version. */
+#define CLOCK_P(clock) \
+ (clock) != CLOCK_PROCESS_CPUTIME_ID \
+ && (clock) != CLOCK_THREAD_CPUTIME_ID \
+ && (clock) != CLOCK_MONOTONIC
+
+#include <sysdeps/unix/clock_nanosleep.c>