本文整理汇总了C#中System.Threading.ReaderWriterLockSlim.TryEnterReadLock方法的典型用法代码示例。如果您正苦于以下问题:C# ReaderWriterLockSlim.TryEnterReadLock方法的具体用法?C# ReaderWriterLockSlim.TryEnterReadLock怎么用?C# ReaderWriterLockSlim.TryEnterReadLock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System.Threading.ReaderWriterLockSlim
的用法示例。
在下文中一共展示了ReaderWriterLockSlim.TryEnterReadLock方法的15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: ReadOnlyLock
public ReadOnlyLock(ReaderWriterLockSlim rwl, int millisecondsTimeout)
: base(rwl)
{
if (millisecondsTimeout == Timeout.Infinite)
{
while (!_lockAcquired)
_lockAcquired = rwl.TryEnterReadLock(1);
}
else
{
_lockAcquired = rwl.TryEnterReadLock(millisecondsTimeout);
}
}
示例2: ReadLock
public ReadLock(ReaderWriterLockSlim @lock, int millisecondsTimeout)
{
_lock = @lock;
_isDisposed = 0;
if (!_lock.TryEnterReadLock(millisecondsTimeout))
throw new TimeoutException();
}
示例3: GetReadOnlyLock
/// <summary>
/// The get read only lock.
/// </summary>
/// <param name="locks"> The locks. </param>
public static void GetReadOnlyLock(ReaderWriterLockSlim locks)
{
bool lockAcquired = false;
while (!lockAcquired)
{
lockAcquired = locks.TryEnterReadLock(1);
}
}
示例4: SlimReadLockHolder
public SlimReadLockHolder(ReaderWriterLockSlim locker, bool waitForLock)
{
this.locker = locker;
if(waitForLock)
{
locker.EnterReadLock();
lockAcquired = true;
return;
}
lockAcquired = locker.TryEnterReadLock(0);
}
示例5: TryEnterReadLock_OutOfRange
public void TryEnterReadLock_OutOfRange ()
{
var v = new ReaderWriterLockSlim ();
try {
v.TryEnterReadLock (-2);
Assert.Fail ("1");
} catch (ArgumentOutOfRangeException) {
}
try {
v.TryEnterReadLock (TimeSpan.MaxValue);
Assert.Fail ("2");
} catch (ArgumentOutOfRangeException) {
}
try {
v.TryEnterReadLock (TimeSpan.MinValue);
Assert.Fail ("3");
} catch (ArgumentOutOfRangeException) {
}
}
示例6: Dispose
public static void Dispose()
{
ReaderWriterLockSlim rwls;
rwls = new ReaderWriterLockSlim();
rwls.Dispose();
Assert.Throws<ObjectDisposedException>(() => rwls.TryEnterReadLock(0));
Assert.Throws<ObjectDisposedException>(() => rwls.TryEnterUpgradeableReadLock(0));
Assert.Throws<ObjectDisposedException>(() => rwls.TryEnterWriteLock(0));
rwls.Dispose();
for (int i = 0; i < 3; i++)
{
rwls = new ReaderWriterLockSlim();
switch (i)
{
case 0: rwls.EnterReadLock(); break;
case 1: rwls.EnterUpgradeableReadLock(); break;
case 2: rwls.EnterWriteLock(); break;
}
Assert.Throws<SynchronizationLockException>(() => rwls.Dispose());
}
}
示例7: RecursiveWritePlusReadLockTest
public void RecursiveWritePlusReadLockTest ()
{
var v = new ReaderWriterLockSlim (LockRecursionPolicy.SupportsRecursion);
Assert.IsTrue (v.TryEnterWriteLock (100), "#1");
Assert.AreEqual (1, v.RecursiveWriteCount, "1b");
Assert.AreEqual (0, v.RecursiveReadCount, "1c");
Assert.IsTrue (v.TryEnterReadLock (100), "#2");
Assert.AreEqual (1, v.RecursiveWriteCount, "2b");
Assert.AreEqual (1, v.RecursiveReadCount, "2c");
Assert.IsTrue (v.TryEnterReadLock (100), "#3");
Assert.AreEqual (1, v.RecursiveWriteCount, "3b");
Assert.AreEqual (2, v.RecursiveReadCount, "3c");
v.ExitReadLock ();
Assert.AreEqual (1, v.RecursiveWriteCount, "4b");
Assert.AreEqual (1, v.RecursiveReadCount, "4c");
}
示例8: RecursiveReadLockTest
public void RecursiveReadLockTest ()
{
var v = new ReaderWriterLockSlim (LockRecursionPolicy.SupportsRecursion);
Assert.IsTrue (v.TryEnterReadLock (100), "#1");
Assert.IsTrue (v.TryEnterReadLock (100), "#2");
Assert.IsTrue (v.TryEnterReadLock (100), "#3");
Assert.AreEqual (3, v.RecursiveReadCount);
}
示例9: TryEnterWriteLock_WhileReading
public void TryEnterWriteLock_WhileReading ()
{
var v = new ReaderWriterLockSlim ();
AutoResetEvent ev = new AutoResetEvent (false);
AutoResetEvent ev2 = new AutoResetEvent (false);
Thread t1 = new Thread (() => {
v.EnterReadLock ();
ev2.Set ();
ev.WaitOne ();
v.ExitReadLock ();
});
t1.Start ();
ev2.WaitOne ();
Assert.IsFalse (v.TryEnterWriteLock (100));
Assert.IsFalse (v.TryEnterReadLock (100));
ev.Set ();
Assert.IsTrue (v.TryEnterWriteLock (100));
}
示例10: RecursiveWriteReadAcquisitionInterleaving
public void RecursiveWriteReadAcquisitionInterleaving()
{
var v = new ReaderWriterLockSlim(LockRecursionPolicy.SupportsRecursion);
v.EnterWriteLock();
Assert.IsTrue(v.IsWriteLockHeld, "#1");
bool result = true;
var t = new Thread(delegate ()
{
result = v.TryEnterReadLock(100);
});
t.Start();
t.Join();
Assert.IsFalse(result, "#2");
v.ExitWriteLock();
t = new Thread(delegate ()
{
result = v.TryEnterReadLock(100);
});
t.Start();
t.Join();
Assert.IsTrue(result, "#3");
}
示例11: EnterExit
public static void EnterExit()
{
using (ReaderWriterLockSlim rwls = new ReaderWriterLockSlim())
{
Assert.False(rwls.IsReadLockHeld);
rwls.EnterReadLock();
Assert.True(rwls.IsReadLockHeld);
rwls.ExitReadLock();
Assert.False(rwls.IsReadLockHeld);
Assert.False(rwls.IsUpgradeableReadLockHeld);
rwls.EnterUpgradeableReadLock();
Assert.True(rwls.IsUpgradeableReadLockHeld);
rwls.ExitUpgradeableReadLock();
Assert.False(rwls.IsUpgradeableReadLockHeld);
Assert.False(rwls.IsWriteLockHeld);
rwls.EnterWriteLock();
Assert.True(rwls.IsWriteLockHeld);
rwls.ExitWriteLock();
Assert.False(rwls.IsWriteLockHeld);
Assert.False(rwls.IsUpgradeableReadLockHeld);
rwls.EnterUpgradeableReadLock();
Assert.False(rwls.IsWriteLockHeld);
Assert.True(rwls.IsUpgradeableReadLockHeld);
rwls.EnterWriteLock();
Assert.True(rwls.IsWriteLockHeld);
rwls.ExitWriteLock();
Assert.False(rwls.IsWriteLockHeld);
Assert.True(rwls.IsUpgradeableReadLockHeld);
rwls.ExitUpgradeableReadLock();
Assert.False(rwls.IsUpgradeableReadLockHeld);
Assert.True(rwls.TryEnterReadLock(0));
rwls.ExitReadLock();
Assert.True(rwls.TryEnterReadLock(Timeout.InfiniteTimeSpan));
rwls.ExitReadLock();
Assert.True(rwls.TryEnterUpgradeableReadLock(0));
rwls.ExitUpgradeableReadLock();
Assert.True(rwls.TryEnterUpgradeableReadLock(Timeout.InfiniteTimeSpan));
rwls.ExitUpgradeableReadLock();
Assert.True(rwls.TryEnterWriteLock(0));
rwls.ExitWriteLock();
Assert.True(rwls.TryEnterWriteLock(Timeout.InfiniteTimeSpan));
rwls.ExitWriteLock();
}
}
示例12: WriterToReaderChain
public static void WriterToReaderChain()
{
using (AutoResetEvent are = new AutoResetEvent(false))
using (ReaderWriterLockSlim rwls = new ReaderWriterLockSlim())
{
rwls.EnterWriteLock();
Task t = Task.Factory.StartNew(() =>
{
Assert.False(rwls.TryEnterReadLock(TimeSpan.FromMilliseconds(10)));
Task.Run(() => are.Set()); // ideally this won't fire until we've called EnterReadLock, but it's a benign race in that the test will succeed either way
rwls.EnterReadLock();
rwls.ExitReadLock();
}, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default);
are.WaitOne();
rwls.ExitWriteLock();
t.GetAwaiter().GetResult();
}
}
示例13: WritersAreMutuallyExclusiveFromReaders
public static void WritersAreMutuallyExclusiveFromReaders()
{
using (Barrier barrier = new Barrier(2))
using (ReaderWriterLockSlim rwls = new ReaderWriterLockSlim())
{
Task.WaitAll(
Task.Run(() =>
{
rwls.EnterWriteLock();
barrier.SignalAndWait();
Assert.True(rwls.IsWriteLockHeld);
barrier.SignalAndWait();
rwls.ExitWriteLock();
}),
Task.Run(() =>
{
barrier.SignalAndWait();
Assert.False(rwls.TryEnterReadLock(0));
Assert.False(rwls.IsReadLockHeld);
barrier.SignalAndWait();
}));
}
}
示例14: InvalidTimeouts
public static void InvalidTimeouts()
{
using (ReaderWriterLockSlim rwls = new ReaderWriterLockSlim())
{
Assert.Throws<ArgumentOutOfRangeException>(() => rwls.TryEnterReadLock(-2));
Assert.Throws<ArgumentOutOfRangeException>(() => rwls.TryEnterUpgradeableReadLock(-3));
Assert.Throws<ArgumentOutOfRangeException>(() => rwls.TryEnterWriteLock(-4));
Assert.Throws<ArgumentOutOfRangeException>(() => rwls.TryEnterReadLock(TimeSpan.MaxValue));
Assert.Throws<ArgumentOutOfRangeException>(() => rwls.TryEnterUpgradeableReadLock(TimeSpan.MinValue));
Assert.Throws<ArgumentOutOfRangeException>(() => rwls.TryEnterWriteLock(TimeSpan.FromMilliseconds(-2)));
}
}
示例15: QuickTryEnterReadLock
/// <summary>
///
/// </summary>
/// <param name="readerWriterLockSlim"></param>
/// <returns></returns>
public static bool QuickTryEnterReadLock( ReaderWriterLockSlim readerWriterLockSlim )
{
return readerWriterLockSlim.TryEnterReadLock( s_TimeSpan );
}