diff options
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/lock.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Python/lock.c b/Python/lock.c index 7d1ead5..91c66df 100644 --- a/Python/lock.c +++ b/Python/lock.c @@ -472,7 +472,7 @@ _PyRWMutex_Unlock(_PyRWMutex *rwmutex) void _PySeqLock_LockWrite(_PySeqLock *seqlock) { - // lock the entry by setting by moving to an odd sequence number + // lock by moving to an odd sequence number uint32_t prev = _Py_atomic_load_uint32_relaxed(&seqlock->sequence); while (1) { if (SEQLOCK_IS_UPDATING(prev)) { @@ -492,14 +492,14 @@ void _PySeqLock_LockWrite(_PySeqLock *seqlock) void _PySeqLock_AbandonWrite(_PySeqLock *seqlock) { - uint32_t new_seq = seqlock->sequence - 1; + uint32_t new_seq = _Py_atomic_load_uint32_relaxed(&seqlock->sequence) - 1; assert(!SEQLOCK_IS_UPDATING(new_seq)); _Py_atomic_store_uint32(&seqlock->sequence, new_seq); } void _PySeqLock_UnlockWrite(_PySeqLock *seqlock) { - uint32_t new_seq = seqlock->sequence + 1; + uint32_t new_seq = _Py_atomic_load_uint32_relaxed(&seqlock->sequence) + 1; assert(!SEQLOCK_IS_UPDATING(new_seq)); _Py_atomic_store_uint32(&seqlock->sequence, new_seq); } |