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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#include "common.h"
#include "syncclean.hpp"
#include "virtualcallstub.h"
#include "threadsuspend.h"
VolatilePtr<Bucket> SyncClean::m_HashMap = NULL;
VolatilePtr<EEHashEntry*> SyncClean::m_EEHashTable;
void SyncClean::Terminate()
{
CONTRACTL {
NOTHROW;
GC_NOTRIGGER;
} CONTRACTL_END;
CleanUp();
}
void SyncClean::AddHashMap (Bucket *bucket)
{
WRAPPER_NO_CONTRACT;
if (!g_fEEStarted) {
delete [] bucket;
return;
}
BEGIN_GETTHREAD_ALLOWED
_ASSERTE (GetThread() == NULL || GetThread()->PreemptiveGCDisabled());
END_GETTHREAD_ALLOWED
Bucket * pTempBucket = NULL;
do
{
pTempBucket = (Bucket *)m_HashMap;
NextObsolete (bucket) = pTempBucket;
}
while (FastInterlockCompareExchangePointer(m_HashMap.GetPointer(), bucket, pTempBucket) != pTempBucket);
}
void SyncClean::AddEEHashTable (EEHashEntry** entry)
{
WRAPPER_NO_CONTRACT;
if (!g_fEEStarted) {
delete [] (entry-1);
return;
}
BEGIN_GETTHREAD_ALLOWED
_ASSERTE (GetThread() == NULL || GetThread()->PreemptiveGCDisabled());
END_GETTHREAD_ALLOWED
EEHashEntry ** pTempHashEntry = NULL;
do
{
pTempHashEntry = (EEHashEntry**)m_EEHashTable;
entry[-1] = (EEHashEntry *)pTempHashEntry;
}
while (FastInterlockCompareExchangePointer(m_EEHashTable.GetPointer(), entry, pTempHashEntry) != pTempHashEntry);
}
void SyncClean::CleanUp ()
{
LIMITED_METHOD_CONTRACT;
// Only GC thread can call this.
_ASSERTE (g_fProcessDetach ||
IsGCSpecialThread() ||
(GCHeap::IsGCInProgress() && GetThread() == ThreadSuspend::GetSuspensionThread()));
if (m_HashMap)
{
Bucket * pTempBucket = FastInterlockExchangePointer(m_HashMap.GetPointer(), NULL);
while (pTempBucket)
{
Bucket* pNextBucket = NextObsolete (pTempBucket);
delete [] pTempBucket;
pTempBucket = pNextBucket;
}
}
if (m_EEHashTable)
{
EEHashEntry ** pTempHashEntry = FastInterlockExchangePointer(m_EEHashTable.GetPointer(), NULL);
while (pTempHashEntry) {
EEHashEntry **pNextHashEntry = (EEHashEntry **)pTempHashEntry[-1];
pTempHashEntry --;
delete [] pTempHashEntry;
pTempHashEntry = pNextHashEntry;
}
}
// Give others we want to reclaim during the GC sync point a chance to do it
VirtualCallStubManager::ReclaimAll();
}
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