Mutex サンプルコードの PowerShell 版

# This example shows how a named mutex is used to signal between

# processes or threads. 

# Run this program from two (or more) command windows. Each process

# creates a Mutex object that represents the named mutex "MyMutex".

# The named mutex is a system object whose lifetime is bounded by the

# lifetimes of the Mutex objects that represent it. The named mutex

# is created when the first process creates its local Mutex; in this

# example, the named mutex is owned by the first process. The named 

# mutex is destroyed when all the Mutex objects that represent it

# have been released.

# The constructor overload shown here cannot tell the calling thread

# whether initial ownership of the named mutex was granted. Therefore,

# do not request initial ownership unless you are certain that the 

# thread will create the named mutex.

function Test

{

    # Create the named mutex. Only one system object named 

    # "MyMutex" can exist; the local Mutex object represents 

    # this system object, regardless of which process or thread

    # caused "MyMutex" to be created.

    $m = New-Object System.Threading.Mutex ($false, "MyMutex")

    # Try to gain control of the named mutex. If the mutex is 

    # controlled by another thread, wait for it to be released.        

    "Waiting for the Mutex." | Write-Host

    $ret = $m.WaitOne()

    # Keep control of the mutex until the user presses

    # ENTER.

    Read-Host -Prompt ("This application owns the mutex." +`

        "Press ENTER to release the mutex and exit.") 

    $m.ReleaseMutex()

}

. Test