diff options
Diffstat (limited to 'sysdeps/nacl/lll_timedwait_tid.c')
-rw-r--r-- | sysdeps/nacl/lll_timedwait_tid.c | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/sysdeps/nacl/lll_timedwait_tid.c b/sysdeps/nacl/lll_timedwait_tid.c deleted file mode 100644 index 07276444f9..0000000000 --- a/sysdeps/nacl/lll_timedwait_tid.c +++ /dev/null @@ -1,61 +0,0 @@ -/* Timed waiting for thread death. NaCl version. - Copyright (C) 2015-2016 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 - <http://www.gnu.org/licenses/>. */ - -#include <assert.h> -#include <atomic.h> -#include <errno.h> -#include <lowlevellock.h> -#include <sys/time.h> - -int -__lll_timedwait_tid (int *tidp, const struct timespec *abstime) -{ - /* Reject invalid timeouts. */ - if (__glibc_unlikely (abstime->tv_nsec < 0) - || __glibc_unlikely (abstime->tv_nsec >= 1000000000)) - return EINVAL; - - /* Repeat until thread terminated. */ - int tid; - while ((tid = atomic_load_relaxed (tidp)) != 0) - { - /* See exit-thread.h for details. */ - if (tid == NACL_EXITING_TID) - /* The thread should now be in the process of exiting, so it will - finish quick enough that the timeout doesn't matter. If any - thread ever stays in this state for long, there is something - catastrophically wrong. */ - atomic_spin_nop (); - else - { - assert (tid > 0); - - /* If *FUTEX == TID, wait until woken or timeout. */ - int err = __nacl_irt_futex.futex_wait_abs ((volatile int *) tidp, - tid, abstime); - if (err != 0) - { - if (__glibc_likely (err == ETIMEDOUT)) - return err; - assert (err == EAGAIN); - } - } - } - - return 0; -} |