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ThreadPool.GetMaxThreads Method

Retrieves the number of requests to the thread pool that can be active concurrently. All requests above that number remain queued until thread pool threads become available.

Namespace:  System.Threading
Assembly:  mscorlib (in mscorlib.dll)

public static function GetMaxThreads(
	workerThreads : int, 
	completionPortThreads : int
)

Parameters

workerThreads
Type: System.Int32%

The maximum number of worker threads in the thread pool.

completionPortThreads
Type: System.Int32%

The maximum number of asynchronous I/O threads in the thread pool.

When GetMaxThreads returns, the variable specified by workerThreads contains the maximum number of worker threads allowed in the thread pool, and the variable specified by completionPortThreads contains the maximum number of asynchronous I/O threads allowed in the thread pool.

You can use the GetAvailableThreads method to determine the actual number of threads in the thread pool at any given time.

You can use the SetMaxThreads to set the maximum number of worker threads and asynchronous I/O threads in the thread pool.

You can queue as many thread pool requests as system memory allows. If there are more requests than thread pool threads, the additional requests remain queued until thread pool threads become available.

The following code example shows how to retrieve a count of the maximum and available number of threads in the thread pool. A work item is queued that uses FileStream to asynchronously write to two files. The callback methods are timed to overlap. A worker thread handles the work item and, depending on the speed and number of processors on the computer, one or two completion port threads handle the write operations.

No code example is currently available or this language may not be supported.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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