本文整理汇总了C#中Ref.TryGetVal方法的典型用法代码示例。如果您正苦于以下问题：C# Ref.TryGetVal方法的具体用法？C# Ref.TryGetVal怎么用？C# Ref.TryGetVal使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Ref的用法示例。
在下文中一共展示了Ref.TryGetVal方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DoCommute
/// <summary>
/// Post a commute on a ref in this transaction.
/// </summary>
/// <param name="r">The ref.</param>
/// <param name="fn">The commuting function.</param>
/// <param name="args">Additional arguments to the function.</param>
/// <returns>The computed value.</returns>
internal object DoCommute(Ref r, IFn fn, ISeq args)
{
if (!_info.IsRunning)
throw _retryex;
if (!_vals.ContainsKey(r))
{
object val = null;
try
{
r.EnterReadLock();
val = r.TryGetVal();
}
finally
{
r.ExitReadLock();
}
_vals[r] = val;
}
List<CFn> fns;
if (! _commutes.TryGetValue(r, out fns))
_commutes[r] = fns = new List<CFn>();
fns.Add(new CFn(fn, args));
object ret = fn.applyTo(RT.cons(_vals[r], args));
_vals[r] = ret;
return ret;
}示例2: Lock
/// <summary>
/// Lock a ref.
/// </summary>
/// <param name="r">The ref to lock.</param>
/// <returns>The most recent value of the ref.</returns>
object Lock(Ref r)
{
// can't upgrade read lock, so release it.
ReleaseIfEnsured(r);
bool unlocked = true;
try
{
TryWriteLock(r);
unlocked = false;
if (r.CurrentValPoint() > _readPoint)
throw _retryex;
Info refinfo = r.TInfo;
// write lock conflict
if (refinfo != null && refinfo != _info && refinfo.IsRunning)
{
if (!Barge(refinfo))
{
r.ExitWriteLock();
unlocked = true;
return BlockAndBail(refinfo);
}
}
r.TInfo = _info;
return r.TryGetVal();
}
finally
{
if (!unlocked)
{
r.ExitWriteLock();
}
}
}示例3: Lock
/// <summary>
/// Lock a ref.
/// </summary>
/// <param name="r">The ref to lock.</param>
/// <returns>The current value of the ref.</returns>
object Lock(Ref r)
{
bool unlocked = false;
try
{
r.EnterWriteLock();
if (r.CurrentValPoint() > _readPoint)
throw _retryex;
Info refinfo = r.TInfo;
// write lock conflict
if (refinfo != null && refinfo != _info && refinfo.IsRunning)
{
if (!barge(refinfo))
{
r.ExitWriteLock();
unlocked = true;
// stop prior to blocking
stop(RETRY);
lock (refinfo)
{
if (refinfo.IsRunning)
{
try
{
Monitor.Wait(refinfo, LOCK_WAIT_MSECS);
}
catch (ThreadInterruptedException)
{
}
}
}
throw _retryex;
}
}
r.TInfo = _info;
return r.TryGetVal();
}
finally
{
if (!unlocked)
{
r.ExitWriteLock();
}
}
}