public static async Task <bool> TryLockOperationAsync(this IOperationLock lockObj,
Func <Task> operation,
TimeSpan timeout)
{
var interval = TimeSpan.FromMilliseconds(250);
var elapsed = TimeSpan.Zero;
while (!lockObj.Lock())
{
if (elapsed >= timeout)
{
return(false);
}
await Task.Delay(_sleepInterval);
elapsed += _sleepInterval;
}
try
{
await operation();
return(true);
}
finally
{
lockObj.Release();
}
}
// try acquire lock and then execute the operation
// return true if lock acquired and operation executed
public static bool TryLockOperation(this IOperationLock lockObj,
Action operation,
TimeSpan timeout)
{
var elapsed = TimeSpan.Zero;
while (!lockObj.Lock())
{
if (elapsed >= timeout)
{
return(false);
}
Thread.Sleep(_sleepInterval);
elapsed += _sleepInterval;
}
try
{
operation();
return(true);
}
finally
{
lockObj.Release();
}
}
private static async Task<bool> WaitToLockAsync(IOperationLock lockObj, string operationName, TimeSpan timeout)
{
var elapsed = TimeSpan.Zero;
while (!lockObj.Lock(operationName))
{
if (elapsed >= timeout)
{
return false;
}
await Task.Delay(_sleepInterval);
elapsed += _sleepInterval;
}
return true;
}
public static void LockOperation(this IOperationLock lockObj,
Action operation,
Action onBusy)
{
bool lockTaken = lockObj.Lock();
if (!lockTaken)
{
onBusy();
return;
}
try
{
operation();
}
finally
{
if (lockTaken)
{
lockObj.Release();
}
}
}
public bool Lock(string operationName)
{
return(_lock.Lock(operationName));
}