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SYS(2336) - Critical Section support

  • Article

Controls entries to or exits from a critical section in MTDLL servers.

SYS(2336 [, nAction])

Parameters

  • nAction
    Specifies the action performed by the SYS(2336) function according to the following table.

    nAction

    Description

    (none)

    Returns the current reference count. (Default)

    1

    Calls EnterCriticalSection.

    2

    Calls LeaveCriticalSection.

    3

    Calls LeaveCriticalSection as many times as necessary to reduce the reference count to 0, thereby freeing the critical section.

Return Value

Character. SYS(2336) returns the reference count for all values of nAction.

Remarks

SYS(2336) accesses EnterCriticalSection and LeaveCriticalSection Windows API calls. You can find details of these functions in the MSDN Library Platform SDK reference at https://msdn.microsoft.com/library.

See Also

Reference

SYS(3095) - IDispatch Pointer

BUILD MTDLL Command

SYS( ) Functions Overview

Other Resources

Accessing APIs