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Dependent Handles

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This commit is contained in:
vsadov 2020-09-07 01:53:50 -07:00
parent c038becf1b
commit 766e02e43e
2 changed files with 63 additions and 9 deletions
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69
src/coreclr/src/gc/satori/SatoriRecycler.cpp
View file

@ -96,26 +96,38 @@ void SatoriRecycler::Collect()
// drain queues
DrainMarkQueues();
// mark handles to queues
// mark handles
MarkHandles();
while (m_workList->Count() > 0)
{
DrainMarkQueues();
//mark through cards (could be due to overflow)
//TODO: VS clean cards (could be due to overflow)
}
// all marked here
// all strongly reachable objects are marked here
DependentHandlesInitialScan();
while (m_workList->Count() > 0)
{
DrainMarkQueues();
//TODO: VS clean cards (could be due to overflow)
DependentHandlesRescan();
}
// TODO: VS
// DH initial scan (could be a part of loop above?)
// sync
WeakPtrScan(/*isShort*/ true);
// sync
ScanFinalizables();
DrainMarkQueues();
// scan DH again (why no sync before?)
// TODO: VS why no sync before?
while (m_workList->Count() > 0)
{
DrainMarkQueues();
//TODO: VS clean cards (could be due to overflow)
DependentHandlesRescan();
}
// sync
WeakPtrScan(/*isShort*/ false);
WeakPtrScanBySingleThread();
@ -424,7 +436,6 @@ void SatoriRecycler::DrainMarkQueues()
void SatoriRecycler::MarkHandles()
{
// mark roots for the current stack
ScanContext sc;
sc.promotion = TRUE;
sc.thread_number = 0;
@ -444,7 +455,6 @@ void SatoriRecycler::MarkHandles()
void SatoriRecycler::WeakPtrScan(bool isShort)
{
// mark roots for the current stack
ScanContext sc;
sc.promotion = TRUE;
sc.thread_number = 0;
@ -602,3 +612,44 @@ void SatoriRecycler::ScanFinalizables()
m_workList->Push(c.m_markChunk);
}
}
void SatoriRecycler::DependentHandlesInitialScan()
{
ScanContext sc;
sc.promotion = TRUE;
sc.thread_number = 0;
MarkContext c = MarkContext(this);
sc._unused1 = &c;
// concurrent, per thread/heap
// relies on thread_number to select handle buckets and specialcases #0
GCScan::GcDhInitialScan(MarkFn, 2, 2, &sc);
if (c.m_markChunk != nullptr)
{
m_workList->Push(c.m_markChunk);
}
}
void SatoriRecycler::DependentHandlesRescan()
{
ScanContext sc;
sc.promotion = TRUE;
sc.thread_number = 0;
MarkContext c = MarkContext(this);
sc._unused1 = &c;
// concurrent, per thread/heap
// relies on thread_number to select handle buckets and specialcases #0
if (GCScan::GcDhUnpromotedHandlesExist(&sc))
{
GCScan::GcDhReScan(&sc);
}
if (c.m_markChunk != nullptr)
{
m_workList->Push(c.m_markChunk);
}
}

3
src/coreclr/src/gc/satori/SatoriRecycler.h
View file

@ -67,6 +67,9 @@ private:
void WeakPtrScan(bool isShort);
void WeakPtrScanBySingleThread();
void ScanFinalizables();
void DependentHandlesInitialScan();
void DependentHandlesRescan();
};
#endif