BOOLEAN CacheReleaseMemory(ULONG MinimumAmountToRelease)
{
ULONG AmountReleased;
TRACE("CacheReleaseMemory() MinimumAmountToRelease = %d\n", MinimumAmountToRelease);
// If we aren't initialized yet then they can't do this
if (CacheManagerInitialized == FALSE)
{
return FALSE;
}
// Loop through and try to free the requested amount of memory
for (AmountReleased=0; AmountReleased<MinimumAmountToRelease; )
{
// Try to free a block
// If this fails then break out of the loop
if (!CacheInternalFreeBlock(&CacheManagerDrive))
{
break;
}
// It succeeded so increment the amount of memory we have freed
AmountReleased += CacheManagerDrive.BlockSize * CacheManagerDrive.BytesPerSector;
}
// Return status
return (AmountReleased >= MinimumAmountToRelease);
}
VOID CacheInternalCheckCacheSizeLimits(PCACHE_DRIVE CacheDrive)
{
SIZE_T NewCacheSize;
TRACE("CacheInternalCheckCacheSizeLimits()\n");
// Calculate the size of the cache if we added a block
NewCacheSize = (CacheBlockCount + 1) * (CacheDrive->BlockSize * CacheDrive->BytesPerSector);
// Check the new size against the cache size limit
if (NewCacheSize > CacheSizeLimit)
{
CacheInternalFreeBlock(CacheDrive);
CacheInternalDumpBlockList(CacheDrive);
}
}