internal unsafe static void Initialize(GCType gcType)
{
traceablePtrs = new ManagedPtrAccounting();
traceablePinnedPtrs = new ManagedPtrAccounting();
staticPtrs = new StaticPtrAccounting();
assertRTypeHeaders = new AssertRTypeHeaders();
forGCAssertRTypeHeaders = assertRTypeHeaders;
runtimeTypeReckoner = new RuntimeTypeReckoner();
forGCRuntimeTypeReckoner = runtimeTypeReckoner;
runtimeTypeMapper = new RuntimeTypeMapper();
forGCRuntimeTypeMapper = runtimeTypeMapper;
instanceReckoner = new InstanceReckoner();
forGCInstanceReckoner = instanceReckoner;
switch (gcType)
{
case GCType.MarkSweepCollector: {
forGCAssertRTypeHeaders = new SegregatedFreeList.ObjectVisitorWrapper(assertRTypeHeaders);
forGCRuntimeTypeReckoner = new SegregatedFreeList.ObjectVisitorWrapper(runtimeTypeReckoner);
forGCRuntimeTypeMapper = new SegregatedFreeList.ObjectVisitorWrapper(runtimeTypeMapper);
forGCInstanceReckoner = new SegregatedFreeList.ObjectVisitorWrapper(instanceReckoner);
break;
}
}
table = new RuntimeTypeAccounting[TABLE_SIZE];
MemoryAccounting.initialized = true;
}
void VisitObjects(ObjectLayout.ObjectVisitor objectVisitor,
UIntPtr lowAddr, UIntPtr highAddr)
{
VTable.Assert(PageTable.PageAligned(lowAddr));
VTable.Assert(PageTable.PageAligned(highAddr));
UIntPtr lowPage = PageTable.Page(lowAddr);
UIntPtr highPage = PageTable.Page(highAddr);
SegregatedFreeList.VisitObjects(lowPage, highPage, objectVisitor);
}
internal Verifier(NonNullReferenceVisitor referenceVisitor,
NonNullReferenceVisitor threadReferenceVisitor,
ObjectLayout.ObjectVisitor objectVisitor,
StackVerifier stackVerifier)
{
this.referenceVisitor = referenceVisitor;;
this.threadReferenceVisitor = threadReferenceVisitor;
this.objectVisitor = objectVisitor;
this.stackVerifier = stackVerifier;
}
internal override void VisitObjects
(ObjectLayout.ObjectVisitor objVisitor,
UIntPtr lowAddr,
UIntPtr highAddr)
{
UIntPtr lowPage = PageTable.Page(lowAddr);
UIntPtr highPage = PageTable.Page(highAddr);
SegregatedFreeList.VisitObjects(lowPage,
highPage,
objVisitor);
}
static Verifier()
{
genericReferenceVisitor = new GenericReferenceVisitor();
genericThreadReferenceVisitor =
new GenericThreadReferenceVisitor();
genericObjectVisitor =
new GenericObjectVisitor(genericReferenceVisitor);
genericStackVerifier = new GenericStackVerifier();
bumpAllocatorVerifier = new Verifier(genericReferenceVisitor,
genericThreadReferenceVisitor,
genericObjectVisitor,
genericStackVerifier);
segregatedFreeListVerifier =
new Verifier(genericReferenceVisitor,
genericThreadReferenceVisitor,
new SegregatedFreeList.ObjectVisitorWrapper(genericObjectVisitor),
genericStackVerifier);
}
void VisitObjects(ObjectLayout.ObjectVisitor objectVisitor,
UIntPtr lowAddr, UIntPtr highAddr)
{
UIntPtr oldAddr = UIntPtr.Zero;
UIntPtr objectAddr = lowAddr + PreHeader.Size;
objectAddr = BumpAllocator.SkipNonObjectData(objectAddr, highAddr);
while (objectAddr < highAddr)
{
if (PageTable.Page(objectAddr) != PageTable.Page(oldAddr))
{
InteriorPtrTable.VerifyFirst(oldAddr, objectAddr);
}
oldAddr = objectAddr;
Object obj = Magic.fromAddress(objectAddr);
UIntPtr objectSize = objectVisitor.Visit(obj);
objectAddr += objectSize;
objectAddr =
BumpAllocator.SkipNonObjectData(objectAddr, highAddr);
}
VTable.Assert(objectAddr - PreHeader.Size <= highAddr);
}
private static void visitAllObjects(ObjectLayout.ObjectVisitor visitor,
UIntPtr lowPage, UIntPtr highPage)
{
for (UIntPtr first = lowPage; first < highPage; first++)
{
if (PageTable.IsMyGcPage(first))
{
UIntPtr last = first + 1;
while (last < highPage)
{
if (!PageTable.IsMyGcPage(last))
{
break;
}
last++;
}
UIntPtr start = PageTable.PageAddr(first);
UIntPtr end = PageTable.PageAddr(last);
GC.installedGC.VisitObjects(visitor, start, end);
first = last;
}
}
}
internal override void VisitObjects
(ObjectLayout.ObjectVisitor objectVisitor,
UIntPtr lowAddr,
UIntPtr highAddr)
{
}
internal abstract void VisitObjects(ObjectLayout.ObjectVisitor objectVisitor,
UIntPtr lowAddr,
UIntPtr highAddr);
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;
}
}
}
}