nf-memoryapi-getsystemfilecachesize.md

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NF:memoryapi.GetSystemFileCacheSize	GetSystemFileCacheSize function (memoryapi.h)	Retrieves the current size limits for the working set of the system cache.	FILE_CACHE_MAX_HARD_ENABLE FILE_CACHE_MIN_HARD_ENABLE GetSystemFileCacheSize GetSystemFileCacheSize function base.getsystemfilecachesize winbase/GetSystemFileCacheSize	base\getsystemfilecachesize.htm	base	9a82e572-eab8-4096-a3b3-706ca6eb7a52	12/05/2018	FILE_CACHE_MAX_HARD_ENABLE, FILE_CACHE_MIN_HARD_ENABLE, GetSystemFileCacheSize, GetSystemFileCacheSize function, base.getsystemfilecachesize, winbase/GetSystemFileCacheSize	memoryapi.h	Windows.h, Memoryapi.h	Windows	Windows Vista, Windows XP Professional x64 Edition [desktop apps only]	Windows Server 2008, Windows Server 2003 with SP1 [desktop apps only]										onecore.lib	Kernel32.dll		Windows			19H1	GetSystemFileCacheSize memoryapi/GetSystemFileCacheSize	c++	APIRef kbSyntax	DllExport	Kernel32.dll API-MS-Win-Core-memory-l1-1-1.dll KernelBase.dll API-MS-Win-Core-memory-l1-1-2.dll API-MS-Win-Core-memory-l1-1-3.dll API-MS-Win-DownLevel-Kernel32-l1-1-0.dll MinKernelBase.dll API-MS-Win-Core-Memory-L1-1-4.dll	GetSystemFileCacheSize

GetSystemFileCacheSize function

-description

Retrieves the current size limits for the working set of the system cache.

-parameters

-param lpMinimumFileCacheSize [out]

A pointer to a variable that receives the minimum size of the file cache, in bytes. The virtual memory manager attempts to keep at least this much memory resident in the system file cache, if there is a previous call to the SetSystemFileCacheSize function with the FILE_CACHE_MIN_HARD_ENABLE flag.

-param lpMaximumFileCacheSize [out]

A pointer to a variable that receives the maximum size of the file cache, in bytes. The virtual memory manager enforces this limit only if there is a previous call to SetSystemFileCacheSize with the FILE_CACHE_MAX_HARD_ENABLE flag.

-param lpFlags [out]

The flags that indicate which of the file cache limits are enabled.

Value	Meaning
FILE_CACHE_MAX_HARD_ENABLE 0x1	The maximum size limit is enabled. If this flag is not present, this limit is disabled.
FILE_CACHE_MIN_HARD_ENABLE 0x4	The minimum size limit is enabled. If this flag is not present, this limit is disabled.

-returns

If the function succeeds, the return value is a nonzero value.

If the function fails, the return value is 0 (zero). To get extended error information, call GetLastError.

-remarks

To compile an application that uses this function, define _WIN32_WINNT as 0x0502 or later. For more information, see Using the Windows Headers.

The FILE_CACHE constants will be defined in the Windows header files starting with the Windows SDK for Windows Server 2008. If you are using header files from an earlier version of the SDK, add the definitions shown in SetSystemFileCacheSize to your code.

-see-also

Memory Management Functions

SetSystemFileCacheSize