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mdbx-windows: попытка борьбы с ложно-положительными конфликтами LockFileEx() (backport).

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Леонид Юрьев (Leonid Yuriev) 2022-11-03 12:57:18 +03:00
parent 425730c2b3
commit 5dcc0171fa
1 changed files with 14 additions and 0 deletions
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14
src/lck-windows.c
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@ -161,7 +161,21 @@ int mdbx_txn_lock(MDBX_env *env, bool dontwait) {
: (LCK_EXCLUSIVE | LCK_WAITFOR),
LCK_BODY))
return MDBX_SUCCESS;
int rc = (int)GetLastError();
if (rc == ERROR_LOCK_VIOLATION && dontwait) {
SleepEx(0, true);
if (flock(env->me_lazy_fd, LCK_EXCLUSIVE | LCK_DONTWAIT, LCK_BODY))
return MDBX_SUCCESS;
rc = (int)GetLastError();
if (rc == ERROR_LOCK_VIOLATION) {
SleepEx(0, true);
if (flock(env->me_lazy_fd, LCK_EXCLUSIVE | LCK_DONTWAIT, LCK_BODY))
return MDBX_SUCCESS;
rc = (int)GetLastError();
}
}
LeaveCriticalSection(&env->me_windowsbug_lock);
return (!dontwait || rc != ERROR_LOCK_VIOLATION) ? rc : MDBX_BUSY;
}