diff options
Diffstat (limited to 'sysdeps')
| -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 |
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> |