159 lines
2.6 KiB
C++
159 lines
2.6 KiB
C++
/*++
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Copyright (c) 1998-1999 Microsoft Corporation
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All rights reserved.
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Module Name:
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dbginit.cxx
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Abstract:
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Debug Library initialization
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Author:
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Steve Kiraly (SteveKi) 24-May-1998
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Revision History:
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--*/
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#include "precomp.hxx"
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#pragma hdrstop
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//
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// Debug library lock variable.
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//
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namespace
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{
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LONG DebugLibraryInitLock = 0;
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BOOL IsLibraryInitialized = FALSE;
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}
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/*++
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Title:
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DebugLibraryInitialize
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Routine Description:
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Initialize the debug library. Basically we need to have the
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library critical section initialized to prevent multiple threads
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from trying to access either the messaging initialization code
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or the internal heap initialization code.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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extern "C"
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VOID
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DebugLibraryInitialize(
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VOID
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)
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{
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//
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// Is the library initialized.
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//
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if (!IsLibraryInitialized)
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{
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//
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// Only allow one thread to do the library initialization.
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//
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while (InterlockedCompareExchange(&DebugLibraryInitLock, 1, 0))
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{
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Sleep(1);
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}
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//
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// We must re-check is, to prevent second thread from doing
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// the initialization as well.
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//
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if (!IsLibraryInitialized)
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{
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//
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// Initialize the ciritical section
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//
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GlobalCriticalSection.Initialize();
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//
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// Initalize the debug heap.
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//
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DebugLibraryInitializeHeap();
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//
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// Mark the library as initialized.
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//
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IsLibraryInitialized = TRUE;
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}
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//
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// Release the library init lock.
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//
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DebugLibraryInitLock = 0;
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}
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}
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/*++
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Title:
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DebugLibraryRelease
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Routine Description:
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Release any resorces in the debug library. Callers should call
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this function to properly shut down the library. Callers should
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not call any function in the library after this call.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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extern "C"
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VOID
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DebugLibraryRelease(
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VOID
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)
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{
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//
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// Relese the message instance.
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//
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TDebugMsg_Release();
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//
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// Walk the internal heap, if the Display library
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// errors flag is enabled then the heap contents
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// are dummped to the debug device.
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//
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DebugLibraryWalkHeap();
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//
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// Release the internal heap.
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//
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DebugLibraryDestroyHeap();
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//
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// Release the critical section.
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//
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GlobalCriticalSection.Release();
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//
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// Mark the library as not initialized.
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//
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IsLibraryInitialized = FALSE;
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}
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