public MuninnPageCache(PageSwapperFactory swapperFactory, MemoryAllocator memoryAllocator, int cachePageSize, PageCacheTracer pageCacheTracer, PageCursorTracerSupplier pageCursorTracerSupplier, VersionContextSupplier versionContextSupplier, JobScheduler jobScheduler)
{
VerifyHacks();
VerifyCachePageSizeIsPowerOfTwo(cachePageSize);
int maxPages = CalculatePageCount(memoryAllocator, cachePageSize);
// Expose the total number of pages
pageCacheTracer.MaxPages(maxPages);
MemoryAllocationTracker memoryTracker = GlobalMemoryTracker.INSTANCE;
this._pageCacheId = _pageCacheIdCounter.incrementAndGet();
this._swapperFactory = swapperFactory;
this._cachePageSize = cachePageSize;
this._keepFree = Math.Min(_pagesToKeepFree, maxPages / 2);
this._pageCacheTracer = pageCacheTracer;
this._pageCursorTracerSupplier = pageCursorTracerSupplier;
this._versionContextSupplier = versionContextSupplier;
this._printExceptionsOnClose = true;
long alignment = swapperFactory.RequiredBufferAlignment;
this.VictimPage = VictimPageReference.GetVictimPage(cachePageSize, memoryTracker);
this.Pages = new PageList(maxPages, cachePageSize, memoryAllocator, new SwapperSet(), VictimPage, alignment);
this._scheduler = jobScheduler;
FreelistHead = new AtomicInteger();
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void veryLargePageListsMustBeFullyAccessible()
internal virtual void VeryLargePageListsMustBeFullyAccessible()
{
// We need roughly 2 GiBs of memory for the meta-data here, which is why this is an IT and not a Test.
// We add one extra page worth of data to the size here, to avoid ending up on a "convenient" boundary.
int pageSize = ( int )ByteUnit.kibiBytes(8);
long pageCacheSize = ByteUnit.gibiBytes(513) + pageSize;
int pages = Math.toIntExact(pageCacheSize / pageSize);
MemoryAllocator mman = MemoryAllocator.createAllocator("2 GiB", GlobalMemoryTracker.INSTANCE);
SwapperSet swappers = new SwapperSet();
long victimPage = VictimPageReference.GetVictimPage(pageSize, GlobalMemoryTracker.INSTANCE);
PageList pageList = new PageList(pages, pageSize, mman, swappers, victimPage, Long.BYTES);
// Verify we end up with the correct number of pages.
assertThat(pageList.PageCount, @is(pages));
// Spot-check the accessibility in the bulk of the pages.
IntStream.range(0, pages / 32).parallel().forEach(id => verifyPageMetaDataIsAccessible(pageList, id * 32));
// Thoroughly check the accessibility around the tail end of the page list.
IntStream.range(pages - 2000, pages).parallel().forEach(id => verifyPageMetaDataIsAccessible(pageList, id));
}