diff options
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/parking_lot.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Python/parking_lot.c b/Python/parking_lot.c index 841b1d7..a7e9760 100644 --- a/Python/parking_lot.c +++ b/Python/parking_lot.c @@ -102,7 +102,14 @@ _PySemaphore_PlatformWait(_PySemaphore *sema, PyTime_t timeout) millis = INFINITE; } else { - millis = (DWORD) (timeout / 1000000); + PyTime_t div = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_TIMEOUT); + // Prevent overflow with clamping the result + if ((PyTime_t)PY_DWORD_MAX < div) { + millis = PY_DWORD_MAX; + } + else { + millis = (DWORD) div; + } } wait = WaitForSingleObjectEx(sema->platform_sem, millis, FALSE); if (wait == WAIT_OBJECT_0) { |