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Make GlobalMemoryStatus lie about what we really have......

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svn path=/trunk/; revision=7354
This commit is contained in:
Steven Edwards
2003-12-30 23:16:43 +00:00
parent a755da6416
commit 5f7c494081
1 changed files with 45 additions and 33 deletions
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reactos/lib/kernel32/mem/global.c
+45 -33
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@@ -1,4 +1,4 @@
/* $Id: global.c,v 1.17 2003/12/29 23:04:08 sedwards Exp $
/* $Id: global.c,v 1.18 2003/12/30 23:16:43 sedwards Exp $
*
* Win32 Global/Local heap functions (GlobalXXX, LocalXXX).
* These functions included in Win32 for compatibility with 16 bit Windows
@@ -10,6 +10,7 @@
*/
#include <k32.h>
#include <time.h>
#define NDEBUG
#include <kernel32/kernel32.h>
@@ -353,39 +354,50 @@ GlobalLock(HGLOBAL hMem)
VOID STDCALL
GlobalMemoryStatus(LPMEMORYSTATUS lpBuffer)
{
NTSTATUS Status;
SYSTEM_PERFORMANCE_INFORMATION Spi;
QUOTA_LIMITS Ql;
VM_COUNTERS Vmc;
PIMAGE_NT_HEADERS ImageNtHeader;
static MEMORYSTATUS cached_memstatus;
// static int cache_lastchecked = 0;
SYSTEM_INFO si;
RtlZeroMemory (lpBuffer, sizeof (MEMORYSTATUS));
lpBuffer->dwLength = sizeof (MEMORYSTATUS);
Status = NtQuerySystemInformation (
SystemPerformanceInformation,
& Spi,
sizeof Spi,
NULL
);
/* FIXME: perform computations and fill lpBuffer fields */
Status = NtQueryInformationProcess (
GetCurrentProcess(),
ProcessQuotaLimits,
& Ql,
sizeof Ql,
NULL
);
/* FIXME: perform computations and fill lpBuffer fields */
Status = NtQueryInformationProcess (
GetCurrentProcess(),
ProcessVmCounters,
& Vmc,
sizeof Vmc,
NULL
);
/* FIXME: perform computations and fill lpBuffer fields */
ImageNtHeader = RtlImageNtHeader ((PVOID)NtCurrentPeb()->ImageBaseAddress);
/* FIXME: perform computations and fill lpBuffer fields */
// if (GetSystemTimeAsFileTime(NULL)==cache_lastchecked) {
// memcpy(lpBuffer,&cached_memstatus,sizeof(MEMORYSTATUS));
// return;
// }
// cache_lastchecked = GetSystemTimeAsFileTime(NULL);
lpBuffer->dwMemoryLoad = 0;
lpBuffer->dwTotalPhys = 16*1024*1024;
lpBuffer->dwAvailPhys = 16*1024*1024;
lpBuffer->dwTotalPageFile = 16*1024*1024;
lpBuffer->dwAvailPageFile = 16*1024*1024;
/* Some applications (e.g. QuickTime 6) crash if we tell them there
* is more than 2GB of physical memory.
*/
if (lpBuffer->dwTotalPhys>2U*1024*1024*1024)
{
lpBuffer->dwTotalPhys=2U*1024*1024*1024;
lpBuffer->dwAvailPhys=2U*1024*1024*1024;
}
/* FIXME: should do something for other systems */
GetSystemInfo(&si);
lpBuffer->dwTotalVirtual = (char*)si.lpMaximumApplicationAddress-(char*)si.lpMinimumApplicationAddress;
/* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
lpBuffer->dwAvailVirtual = lpBuffer->dwTotalVirtual-64*1024;
memcpy(&cached_memstatus,lpBuffer,sizeof(MEMORYSTATUS));
/* it appears some memory display programs want to divide by these values */
if(lpBuffer->dwTotalPageFile==0)
lpBuffer->dwTotalPageFile++;
if(lpBuffer->dwAvailPageFile==0)
lpBuffer->dwAvailPageFile++;
DPRINT1("<-- LPMEMORYSTATUS: dwLength %ld, dwMemoryLoad %ld, dwTotalPhys %ld, dwAvailPhys %ld,"
" dwTotalPageFile %ld, dwAvailPageFile %ld, dwTotalVirtual %ld, dwAvailVirtual %ld\n",
lpBuffer->dwLength, lpBuffer->dwMemoryLoad, lpBuffer->dwTotalPhys, lpBuffer->dwAvailPhys,
lpBuffer->dwTotalPageFile, lpBuffer->dwAvailPageFile, lpBuffer->dwTotalVirtual,
lpBuffer->dwAvailVirtual);
}