public async Task TranAsync(IsolationLevel iso, DeadlockRetryConfig retry_config, TransactionalTaskAsync task)
{
await EnsureOpenAsync();
if (retry_config == null)
{
retry_config = this.DeadlockRetryConfig;
}
int num_retry = 0;
LABEL_RETRY:
try
{
using (UsingTran u = this.UsingTran(iso))
{
if (await task())
{
u.Commit();
}
}
}
catch (SqlException sqlex)
{
if (sqlex.Number == 1205)
{
// デッドロック発生
num_retry++;
if (num_retry <= retry_config.RetryCount)
{
await Task.Delay(Secure.Rand31i() % retry_config.RetryAverageInterval);
goto LABEL_RETRY;
}
throw;
}
else
{
throw;
}
}
}
public Task TranAsync(TransactionalTaskAsync task) => TranAsync(IsolationLevel.Serializable, null, task);
public Task TranAsync(IsolationLevel iso, TransactionalTaskAsync task) => TranAsync(iso, null, task);
public Task TranAsync(TransactionalTaskAsync task) => TranAsync(null, null, task);
