/// <summary>
/// 区块排它锁，带返回值。
/// </summary>
/// <param name="action">进入锁之后的回调。</param>
public T Block <T>(BlockFunc <T> action)
{
Symbol.CommonException.CheckArgumentNull(action, "action");
Begin();
try {
return(ThreadHelper.Block <T>(_sync, action));
} finally {
End();
}
}
/// <summary>
/// 区块排它锁，带返回值。
/// </summary>
/// <param name="action">进入锁之后的回调。</param>
/// <param name="arg">参数。</param>
public TResult Block <TArg, TResult>(BlockFunc <TArg, TResult> action, TArg arg)
{
Symbol.CommonException.CheckArgumentNull(action, "action");
Begin();
try {
return(ThreadHelper.Block(_sync, action, arg));
} finally {
End();
}
}
/// <summary>
/// 区块排它锁，带返回值。
/// </summary>
/// <param name="state">用于排它锁的对象，不能是结构类型和string。</param>
/// <param name="action">进入锁之后的回调。</param>
/// <param name="arg">参数。</param>
public static TResult Block <TArg, TResult>(object state, BlockFunc <TArg, TResult> action, TArg arg)
{
Symbol.CommonException.CheckArgumentNull(state, "state");
Symbol.CommonException.CheckArgumentNull(action, "action");
bool lockToken = false;
#if net20 || net35
System.Threading.Monitor.Enter(state);
lockToken = true;
#else
System.Threading.Monitor.Enter(state, ref lockToken);
#endif
try {
TResult result = action(arg);
return(result);
} finally {
if (lockToken)
{
System.Threading.Monitor.Exit(state);
}
}
}
