void VerifyPages(ObjectLayout.ObjectVisitor objectVisitor)
{
UIntPtr page = UIntPtr.Zero;
while (page < PageTable.pageTableCount)
{
UIntPtr startPage = page;
if (!PageTable.IsMyPage(startPage))
{
page++;
continue;
}
PageType pageType = PageTable.Type(page);
uint pageProcess = PageTable.Process(page);
do
{
page++;
} while (page < PageTable.pageTableCount &&
PageTable.Type(page) == pageType &&
PageTable.Process(page) == pageProcess);
UIntPtr endPage = page;
switch (pageType)
{
case PageType.Unallocated:
case PageType.Unknown:
case PageType.Shared: {
// The region does not belong to us, so there is
// nothing to check.
break;
}
case PageType.UnusedClean:
case PageType.UnusedDirty: {
PageManager.VerifyUnusedRegion(startPage, endPage);
break;
}
case PageType.System: {
// We have looked at the region, but it is off-limits
// for the verifier.
break;
}
case PageType.NonGC: {
// Since there may be non-objects in the static data
// pages, we cannot apply the heapVerifier to the
// region.
break;
}
case PageType.Stack: {
// The page contains (part of) the activation record
// stack for one or more threads.
break;
}
default: {
// We have found a data region
VTable.Assert(PageTable.IsGcPage(startPage));
UIntPtr startAddr = PageTable.PageAddr(startPage);
UIntPtr endAddr = PageTable.PageAddr(endPage);
GC.installedGC.VisitObjects(objectVisitor,
startAddr, endAddr);
break;
}
}
}
}