diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/futex-internal.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/futex-internal.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/futex-internal.h b/sysdeps/unix/sysv/linux/futex-internal.h index 96a07b05b9..484c8be56c 100644 --- a/sysdeps/unix/sysv/linux/futex-internal.h +++ b/sysdeps/unix/sysv/linux/futex-internal.h @@ -131,6 +131,32 @@ futex_reltimed_wait (unsigned int *futex_word, unsigned int expected, } } +/* 64-bit time version */ +static __always_inline int +futex_reltimed_wait64 (unsigned int *futex_word, unsigned int expected, + const struct __timespec64 *reltime, int private) +{ + int err = lll_futex_timed_wait64 (futex_word, expected, reltime, + private); + switch (err) + { + case 0: + case -EAGAIN: + case -EINTR: + case -ETIMEDOUT: + return -err; + + case -EFAULT: /* Must have been caused by a glibc or application bug. */ + case -EINVAL: /* Either due to wrong alignment or due to the timeout not + being normalized. Must have been caused by a glibc or + application bug. */ + case -ENOSYS: /* Must have been caused by a glibc bug. */ + /* No other errors are documented at this time. */ + default: + futex_fatal_error (); + } +} + /* See sysdeps/nptl/futex-internal.h for details. */ static __always_inline int futex_reltimed_wait_cancelable (unsigned int *futex_word, @@ -160,6 +186,37 @@ futex_reltimed_wait_cancelable (unsigned int *futex_word, } } +/* 64-bit time version */ + +static __always_inline int +futex_reltimed_wait_cancelable64 (unsigned int *futex_word, + unsigned int expected, + const struct __timespec64 *reltime, + int private) +{ + int oldtype; + oldtype = __pthread_enable_asynccancel (); + int err = lll_futex_timed_wait64 (futex_word, expected, reltime, private); + __pthread_disable_asynccancel (oldtype); + switch (err) + { + case 0: + case -EAGAIN: + case -EINTR: + case -ETIMEDOUT: + return -err; + + case -EFAULT: /* Must have been caused by a glibc or application bug. */ + case -EINVAL: /* Either due to wrong alignment or due to the timeout not + being normalized. Must have been caused by a glibc or + application bug. */ + case -ENOSYS: /* Must have been caused by a glibc bug. */ + /* No other errors are documented at this time. */ + default: + futex_fatal_error (); + } +} + /* See sysdeps/nptl/futex-internal.h for details. */ static __always_inline int futex_abstimed_wait (unsigned int *futex_word, unsigned int expected, @@ -190,6 +247,36 @@ futex_abstimed_wait (unsigned int *futex_word, unsigned int expected, } } +/* 64-bit time version */ +static __always_inline int +futex_abstimed_wait64 (unsigned int *futex_word, unsigned int expected, + const struct __timespec64 *abstime, int private) +{ + /* Work around the fact that the kernel rejects negative timeout values + despite them being valid. */ + if (__glibc_unlikely ((abstime != NULL) && (abstime->tv_sec < 0))) + return ETIMEDOUT; + int err = lll_futex_timed_wait_bitset64 (futex_word, expected, abstime, + FUTEX_CLOCK_REALTIME, private); + switch (err) + { + case 0: + case -EAGAIN: + case -EINTR: + case -ETIMEDOUT: + return -err; + + case -EFAULT: /* Must have been caused by a glibc or application bug. */ + case -EINVAL: /* Either due to wrong alignment or due to the timeout not + being normalized. Must have been caused by a glibc or + application bug. */ + case -ENOSYS: /* Must have been caused by a glibc bug. */ + /* No other errors are documented at this time. */ + default: + futex_fatal_error (); + } +} + /* See sysdeps/nptl/futex-internal.h for details. */ static __always_inline int futex_abstimed_wait_cancelable (unsigned int *futex_word, @@ -224,6 +311,42 @@ futex_abstimed_wait_cancelable (unsigned int *futex_word, } } +/* 64-bit time version */ + +static __always_inline int +futex_abstimed_wait_cancelable64 (unsigned int *futex_word, + unsigned int expected, + const struct __timespec64 *abstime, + int private) +{ + /* Work around the fact that the kernel rejects negative timeout values + despite them being valid. */ + if (__glibc_unlikely ((abstime != NULL) && (abstime->tv_sec < 0))) + return ETIMEDOUT; + int oldtype; + oldtype = __pthread_enable_asynccancel (); + int err = lll_futex_timed_wait_bitset64 (futex_word, expected, abstime, + FUTEX_CLOCK_REALTIME, private); + __pthread_disable_asynccancel (oldtype); + switch (err) + { + case 0: + case -EAGAIN: + case -EINTR: + case -ETIMEDOUT: + return -err; + + case -EFAULT: /* Must have been caused by a glibc or application bug. */ + case -EINVAL: /* Either due to wrong alignment or due to the timeout not + being normalized. Must have been caused by a glibc or + application bug. */ + case -ENOSYS: /* Must have been caused by a glibc bug. */ + /* No other errors are documented at this time. */ + default: + futex_fatal_error (); + } +} + /* See sysdeps/nptl/futex-internal.h for details. */ static __always_inline void futex_wake (unsigned int *futex_word, int processes_to_wake, int private) |