本文整理汇总了C#中System.Threading.ReaderWriterLock.DowngradeFromWriterLock方法的典型用法代码示例。如果您正苦于以下问题：C# ReaderWriterLock.DowngradeFromWriterLock方法的具体用法？C# ReaderWriterLock.DowngradeFromWriterLock怎么用？C# ReaderWriterLock.DowngradeFromWriterLock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.ReaderWriterLock的用法示例。
在下文中一共展示了ReaderWriterLock.DowngradeFromWriterLock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: ReaderWriterLock
// The complete code is located in the ReaderWriterLock class topic.
using System;
using System.Threading;
public class Example
{
static ReaderWriterLock rwl = new ReaderWriterLock();
// Define the shared resource protected by the ReaderWriterLock.
static int resource = 0;示例2: UpgradeDowngrade
// Requests a reader lock, upgrades the reader lock to the writer
// lock, and downgrades it to a reader lock again.
static void UpgradeDowngrade(int timeOut)
{
try {
rwl.AcquireReaderLock(timeOut);
try {
// It's safe for this thread to read from the shared resource.
Display("reads resource value " + resource);
Interlocked.Increment(ref reads);
// To write to the resource, either release the reader lock and
// request the writer lock, or upgrade the reader lock. Upgrading
// the reader lock puts the thread in the write queue, behind any
// other threads that might be waiting for the writer lock.
try {
LockCookie lc = rwl.UpgradeToWriterLock(timeOut);
try {
// It's safe for this thread to read or write from the shared resource.
resource = rnd.Next(500);
Display("writes resource value " + resource);
Interlocked.Increment(ref writes);
}
finally {
// Ensure that the lock is released.
rwl.DowngradeFromWriterLock(ref lc);
}
}
catch (ApplicationException) {
// The upgrade request timed out.
Interlocked.Increment(ref writerTimeouts);
}
// If the lock was downgraded, it's still safe to read from the resource.
Display("reads resource value " + resource);
Interlocked.Increment(ref reads);
}
finally {
// Ensure that the lock is released.
rwl.ReleaseReaderLock();
}
}
catch (ApplicationException) {
// The reader lock request timed out.
Interlocked.Increment(ref readerTimeouts);
}
}示例3: Main
//引入命名空间
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime;
using System.Runtime.CompilerServices;
using System.Security;
using System.Text;
using System.Threading;
public class MainClass
{
public static void Main()
{
ReaderWriterLock rwLock = new ReaderWriterLock();
rwLock.AcquireReaderLock(250);
if (!rwLock.IsReaderLockHeld)
return;
Console.WriteLine("Reader lock held");
LockCookie cookie = rwLock.UpgradeToWriterLock(250);
if (rwLock.IsWriterLockHeld)
{
Console.WriteLine("Upgraded to writer lock");
rwLock.DowngradeFromWriterLock(ref cookie);
}
rwLock.ReleaseReaderLock();
}
}