CacheRangeFlush (Windows Embedded CE 6.0)
1/6/2010
This function is called by device drivers and applications to flush a specified range of the cache.
Syntax
void CacheRangeFlush(
LPVOID pAddr,
DWORD dwLength,
DWORD dwFlags
);
Parameters
- pAddr
[in] Starting virtual address where the cache operation is to be performed in. The cache operation is specified by the value in dwFlags.
- dwLength
[in] Specifies the length, in bytes.
dwFlags
[in] Specifies the operation to be performed. The following table shows possible values.Value Description CACHE_SYNC_ALL
Perform all of the above operations.
CACHE_SYNC_DISCARD
Write back and discard cached data.
CACHE_SYNC_FLUSH_D_TLB
Flush the data TLB.
CACHE_SYNC_FLUSH_I_TLB
Flush the instruction translation look-aside buffer (TLB).
CACHE_SYNC_FLUSH_TLB
Flush both the instruction TLB and the data TLB.
CACHE_SYNC_INSTRUCTIONS
Discard all cached instructions.
CACHE_SYNC_L2_DISCARD
Write back and discard the L2 cache.
CACHE_SYNC_L2_WRITEBACK
Write back the L2 cache.
CACHE_SYNC_WRITEBACK
Write back cached data.
Return Value
None.
Remarks
If pAddr and dwLength are set to zero, this applies to all addresses. For example, the call CacheRangeFlush(0, 0, CACHE_SYNC_FLUSH_TLB) flushes the data in the TLB. CacheRangeFlush(0, 0, CACHE_SYNC_DISCARD) writes back and discards everything in the data cache.
Requirements
| Header | pkfuncs.h |
| Library | OEMMain.lib or OEMMain_StaticKITL.lib |
| Windows Embedded CE | Windows CE .NET 4.2 and later |