Category : C++ Source Code
Archive   : VMVCPP.ZIP
Filename : VMLOCK.C

 
Output of file : VMLOCK.C contained in archive : VMVCPP.ZIP
/***
* vmlock.c -
*
* Copyright (c) 1989-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
*
* PUBLIC Functions:
*
* PVmLockVp:
* This function locks the page containing the specified virtual
* address using PVmLockVpCb.
*
* VmUnlockVp:
* This function unlocks the page containing the specified virtual
* address using VmUnlockVpCb.
*
*******************************************************************************/

#pragma title("Virtual Memory Manager")
#pragma subtitle("Locking functions")

#include
#include
#include
#include
#include
#include

#include
#include

unsigned _near _timeCur; /* Current timestamp value */

#pragma page()

PVOID PUBLIC __PVmLockVp(VPVOID vp)
{
PVOID pv;
HPGD hpgd;

VmTracePrintf(("PVmLockVp: vp = %08lX.\n", vp));

pv = __PVmLoadVp(vp, FALSE);
if (pv == NULL)
return(NULL);

hpgd = __HpgdSearchCache(vp);
Assert(hpgd != hpgdNil);

PpgdOfHpgd(hpgd)->cLock++;

return(pv);
}


#pragma page()

void PUBLIC __VmUnlockVp(VPVOID vp, int fDirty)
{
HPGD hpgd;

VmTracePrintf(("VmUnlockVp: vp = %08lX, fDirty = %u.\n", vp, fDirty));

hpgd = __HpgdSearchCache(vp);
Assert(hpgd != hpgdNil);

Assert(PpgdOfHpgd(hpgd)->cLock != 0);
PpgdOfHpgd(hpgd)->cLock--;

if (++_timeCur == UINT_MAX)
__VmUpdateTimestamps();

PpgdOfHpgd(hpgd)->timeRef = _timeCur;

if (fDirty) /* Mark page as dirty if requested */
PpgdOfHpgd(hpgd)->Flags |= fDirtyPgd;
}


  3 Responses to “Category : C++ Source Code
Archive   : VMVCPP.ZIP
Filename : VMLOCK.C
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

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