diff options
| -rw-r--r-- | ChangeLog | 9 | ||||
| -rw-r--r-- | localedata/ChangeLog | 2 | ||||
| -rw-r--r-- | rt/Versions | 1 | ||||
| -rw-r--r-- | sysdeps/generic/clock_nanosleep.c | 39 | ||||
| -rw-r--r-- | sysdeps/unix/clock_nanosleep.c | 81 | ||||
| -rw-r--r-- | sysdeps/unix/i386/i586/clock_nanosleep.c | 26 | ||||
| -rw-r--r-- | time/time.h | 5 |
7 files changed, 162 insertions, 1 deletions
@@ -1,3 +1,12 @@ +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. + 2000-06-26 Greg McGary <greg@mcgary.org> * sysdeps/i386/asm-syntax.h (R, MEM, MEM_DISP, MEM_INDEX, diff --git a/localedata/ChangeLog b/localedata/ChangeLog index 49eed7924c..d0139fa8ad 100644 --- a/localedata/ChangeLog +++ b/localedata/ChangeLog @@ -28,7 +28,7 @@ * tst-fmon-locales/tstfmon_y40y00: Likewise. * tst-fmon-locales/tstfmon_y42n21: Likewise. - * tst-rpmatch.c: Avoid warning with borken compiler. + * tst-rpmatch.c: Avoid warning with broken compiler. * locales/i18n: Take CJK ideographs and Hangul out of `alpha' table. diff --git a/rt/Versions b/rt/Versions index b9cb8da0c9..133f374ea6 100644 --- a/rt/Versions +++ b/rt/Versions @@ -8,6 +8,7 @@ librt { GLIBC_2.2 { # c* clock_getres; clock_gettime; clock_settime; clock_getcpuclockid; + clock_nanosleep; # s* shm_open; shm_unlink; 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> diff --git a/time/time.h b/time/time.h index f4a3eb1ef3..08a4a98b7b 100644 --- a/time/time.h +++ b/time/time.h @@ -277,6 +277,11 @@ extern int clock_settime (clockid_t __clock_id, __const struct timespec *__tp) __THROW; # ifdef __USE_XOPEN2K +/* High-resolution sleep with the specified clock. */ +extern int clock_nanosleep (clockid_t __clock_id, int __flags, + __const struct timespec *__req, + struct timespec *__rem) __THROW; + /* Return clock ID for CPU-time clock. */ extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) __THROW; # endif |