diff options
| -rw-r--r-- | include/time.h | 3 | ||||
| -rw-r--r-- | posix/nanosleep.c | 13 | ||||
| -rw-r--r-- | sysdeps/mach/clock_nanosleep.c (renamed from sysdeps/unix/clock_nanosleep.c) | 67 | ||||
| -rw-r--r-- | sysdeps/mach/nanosleep.c | 79 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/clock_nanosleep.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/nanosleep.c | 31 | ||||
| -rw-r--r-- | time/clock_nanosleep.c | 2 |
7 files changed, 59 insertions, 138 deletions
diff --git a/include/time.h b/include/time.h index 8ac58e8..b3e6353 100644 --- a/include/time.h +++ b/include/time.h @@ -25,6 +25,9 @@ libc_hidden_proto (__clock_gettime) extern __typeof (clock_settime) __clock_settime; libc_hidden_proto (__clock_settime) +extern __typeof (clock_nanosleep) __clock_nanosleep; +libc_hidden_proto (__clock_nanosleep); + #ifdef __linux__ extern __typeof (clock_adjtime) __clock_adjtime; libc_hidden_proto (__clock_adjtime); diff --git a/posix/nanosleep.c b/posix/nanosleep.c index d8564c7..ed41c8c 100644 --- a/posix/nanosleep.c +++ b/posix/nanosleep.c @@ -24,10 +24,13 @@ int __nanosleep (const struct timespec *requested_time, struct timespec *remaining) { - __set_errno (ENOSYS); - return -1; + int ret = __clock_nanosleep (CLOCK_REALTIME, 0, requested_time, remaining); + if (ret != 0) + { + __set_errno (ret); + return -1; + } + return 0; } -stub_warning (nanosleep) - -hidden_def (__nanosleep) +libc_hidden_def (__nanosleep) weak_alias (__nanosleep, nanosleep) diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/mach/clock_nanosleep.c index 8514a43..6dc67d6 100644 --- a/sysdeps/unix/clock_nanosleep.c +++ b/sysdeps/mach/clock_nanosleep.c @@ -1,5 +1,5 @@ -/* High-resolution sleep with the specified clock. - Copyright (C) 2000-2019 Free Software Foundation, Inc. +/* clock_nanosleep - high-resolution sleep with specifiable clock. + Copyright (C) 2002-2019 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 @@ -16,28 +16,58 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <assert.h> #include <errno.h> +#include <mach.h> #include <time.h> -#include <sysdep-cancel.h> +#include <unistd.h> +#include <posix-timer.h> #include <shlib-compat.h> -/* This implementation assumes that these is only a `nanosleep' system - call. So we have to remap all other activities. */ +static int +nanosleep_call (const struct timespec *req, struct timespec *rem) +{ + mach_port_t recv; + struct timespec before; + error_t err; + + const mach_msg_timeout_t ms + = req->tv_sec * 1000 + + (req->tv_nsec + 999999) / 1000000; + + recv = __mach_reply_port (); + + if (rem != NULL) + __clock_gettime (CLOCK_REALTIME, &before); + + err = __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, + 0, 0, recv, ms, MACH_PORT_NULL); + __mach_port_destroy (mach_task_self (), recv); + if (err == EMACH_RCV_INTERRUPTED) + { + if (rem != NULL) + { + struct timespec after, elapsed; + __clock_gettime (CLOCK_REALTIME, &after); + timespec_sub (&elapsed, &after, &before); + timespec_sub (rem, req, &elapsed); + } + + return EINTR; + } + + return 0; +} + int __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, struct timespec *rem) { - struct timespec now; - - if (! valid_nanoseconds (req->tv_nsec)) + if (clock_id != CLOCK_REALTIME + || !valid_nanoseconds (req->tv_nsec) + || (flags != 0 && flags != TIMER_ABSTIME)) return EINVAL; - if (clock_id == CLOCK_THREAD_CPUTIME_ID) - return EINVAL; /* POSIX specifies EINVAL for this case. */ - - if (clock_id < CLOCK_REALTIME || clock_id > CLOCK_THREAD_CPUTIME_ID) - return EINVAL; + struct timespec now; /* If we got an absolute time, remap it. */ if (flags == TIMER_ABSTIME) @@ -68,15 +98,10 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, /* Make sure we are not modifying the struct pointed to by REM. */ rem = NULL; } - else if (flags != 0) - return EINVAL; - else if (clock_id != CLOCK_REALTIME) - /* Not supported. */ - return ENOTSUP; - return __nanosleep (req, rem), 0 ? errno : 0; + return nanosleep_call (req, rem); } - +libc_hidden_def (__clock_nanosleep) versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17); /* clock_nanosleep moved to libc in version 2.17; old binaries may expect the symbol version it had in librt. */ diff --git a/sysdeps/mach/nanosleep.c b/sysdeps/mach/nanosleep.c deleted file mode 100644 index b60a217..0000000 --- a/sysdeps/mach/nanosleep.c +++ /dev/null @@ -1,79 +0,0 @@ -/* nanosleep -- sleep for a period specified with a struct timespec - Copyright (C) 2002-2019 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, see - <https://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <mach.h> -#include <time.h> -#include <unistd.h> - -# define timespec_sub(a, b, result) \ - do { \ - (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ - (result)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec; \ - if ((result)->tv_nsec < 0) { \ - --(result)->tv_sec; \ - (result)->tv_nsec += 1000000000; \ - } \ - } while (0) - -int -__libc_nanosleep (const struct timespec *requested_time, - struct timespec *remaining) -{ - mach_port_t recv; - struct timespec before; - error_t err; - - if (requested_time->tv_sec < 0 - || ! valid_nanoseconds (requested_time->tv_nsec)) - { - errno = EINVAL; - return -1; - } - - const mach_msg_timeout_t ms - = requested_time->tv_sec * 1000 - + (requested_time->tv_nsec + 999999) / 1000000; - - recv = __mach_reply_port (); - - if (remaining != 0) - __clock_gettime (CLOCK_REALTIME, &before); - - err = __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, - 0, 0, recv, ms, MACH_PORT_NULL); - __mach_port_destroy (mach_task_self (), recv); - if (err == EMACH_RCV_INTERRUPTED) - { - if (remaining != 0) - { - struct timespec after, elapsed; - __clock_gettime (CLOCK_REALTIME, &after); - timespec_sub (&after, &before, &elapsed); - timespec_sub (requested_time, &elapsed, remaining); - } - - errno = EINTR; - return -1; - } - - return 0; -} -weak_alias(__libc_nanosleep, __nanosleep) -libc_hidden_def (__nanosleep) -weak_alias (__libc_nanosleep, nanosleep) diff --git a/sysdeps/unix/sysv/linux/clock_nanosleep.c b/sysdeps/unix/sysv/linux/clock_nanosleep.c index 1f240b8..f3c6fd2 100644 --- a/sysdeps/unix/sysv/linux/clock_nanosleep.c +++ b/sysdeps/unix/sysv/linux/clock_nanosleep.c @@ -42,7 +42,7 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, return (INTERNAL_SYSCALL_ERROR_P (r, err) ? INTERNAL_SYSCALL_ERRNO (r, err) : 0); } - +libc_hidden_def (__clock_nanosleep) versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17); /* clock_nanosleep moved to libc in version 2.17; old binaries may expect the symbol version it had in librt. */ diff --git a/sysdeps/unix/sysv/linux/nanosleep.c b/sysdeps/unix/sysv/linux/nanosleep.c deleted file mode 100644 index 6787909..0000000 --- a/sysdeps/unix/sysv/linux/nanosleep.c +++ /dev/null @@ -1,31 +0,0 @@ -/* Linux nanosleep syscall implementation. - Copyright (C) 2017-2019 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, see - <https://www.gnu.org/licenses/>. */ - -#include <time.h> -#include <sysdep-cancel.h> -#include <not-cancel.h> - -/* Pause execution for a number of nanoseconds. */ -int -__nanosleep (const struct timespec *requested_time, - struct timespec *remaining) -{ - return SYSCALL_CANCEL (nanosleep, requested_time, remaining); -} -hidden_def (__nanosleep) -weak_alias (__nanosleep, nanosleep) diff --git a/time/clock_nanosleep.c b/time/clock_nanosleep.c index 5952d29..d4fc16f 100644 --- a/time/clock_nanosleep.c +++ b/time/clock_nanosleep.c @@ -33,7 +33,7 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, /* Not implemented. */ return ENOSYS; } - +libc_hidden_def (__clock_nanosleep) versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17); /* clock_nanosleep moved to libc in version 2.17; old binaries may expect the symbol version it had in librt. */ |