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#include "UnityPrefix.h"
#include "DualThreadAllocator.h"
#include "Runtime/Threads/Thread.h"
#include "Runtime/Allocator/DynamicHeapAllocator.h"
#if ENABLE_MEMORY_MANAGER
class DelayedPointerDeletionManager
{
public:
DelayedPointerDeletionManager(BaseAllocator* mainAlloc, BaseAllocator* threadAlloc) :
m_HasPendingDeletes (0),
m_MainAlloctor (mainAlloc),
m_ThreadAlloctor (threadAlloc),
m_MainThreadPendingPointers(NULL),
m_MainThreadPendingCount (0),
m_MainThreadPendingReserved (0) {}
~DelayedPointerDeletionManager(){ CleanupPendingMainThreadPointers(); }
bool HasPending() {return m_HasPendingDeletes != 0;}
void AddPointerToMainThreadDealloc( void* ptr) ;
void CleanupPendingMainThreadPointers() ;
void DeallocateLocalMemory();
private:
void GrowPendingBuffer();
void** m_MainThreadPendingPointers;
UInt32 m_MainThreadPendingCount;
UInt32 m_MainThreadPendingReserved;
volatile int m_HasPendingDeletes;
BaseAllocator* m_MainAlloctor;
BaseAllocator* m_ThreadAlloctor;
Mutex m_MainThreadPendingPointersMutex;
};
void DelayedPointerDeletionManager::AddPointerToMainThreadDealloc( void* ptr)
{
Mutex::AutoLock autolock(m_MainThreadPendingPointersMutex);
if(++m_MainThreadPendingCount > m_MainThreadPendingReserved)
GrowPendingBuffer();
m_MainThreadPendingPointers[m_MainThreadPendingCount-1] = ptr;
m_HasPendingDeletes = 1;
}
void DelayedPointerDeletionManager::CleanupPendingMainThreadPointers()
{
Mutex::AutoLock autolock(m_MainThreadPendingPointersMutex);
Assert(Thread::CurrentThreadIsMainThread());
m_HasPendingDeletes = 0;
for(UInt32 i = 0; i < m_MainThreadPendingCount; ++i)
m_MainAlloctor->Deallocate(m_MainThreadPendingPointers[i]);
m_MainThreadPendingCount = 0;
}
void DelayedPointerDeletionManager::DeallocateLocalMemory()
{
Assert(!m_HasPendingDeletes && m_MainThreadPendingCount == 0);
m_ThreadAlloctor->Deallocate(m_MainThreadPendingPointers);
m_MainThreadPendingPointers = NULL;
m_MainThreadPendingReserved = 0;
};
void DelayedPointerDeletionManager::GrowPendingBuffer()
{
const UInt32 kInitialBufferSize = 128;
m_MainThreadPendingReserved = std::max(m_MainThreadPendingReserved*2, kInitialBufferSize);
m_MainThreadPendingPointers = (void**) m_ThreadAlloctor->Reallocate(m_MainThreadPendingPointers, m_MainThreadPendingReserved*sizeof(void*), kDefaultMemoryAlignment);
}
template <class UnderlyingAllocator>
DualThreadAllocator<UnderlyingAllocator>::DualThreadAllocator(const char* name, BaseAllocator* mainAllocator, BaseAllocator* threadAllocator)
: BaseAllocator(name)
{
m_MainAllocator = (UnderlyingAllocator*)mainAllocator;
m_ThreadAllocator = (UnderlyingAllocator*)threadAllocator;
m_DelayedDeletion = NULL;
}
template <class UnderlyingAllocator>
void DualThreadAllocator<UnderlyingAllocator>::ThreadCleanup()
{
if(Thread::CurrentThreadIsMainThread())
UNITY_DELETE(m_DelayedDeletion, kMemManager);
}
template <class UnderlyingAllocator>
void DualThreadAllocator<UnderlyingAllocator>::FrameMaintenance(bool cleanup)
{
if(m_DelayedDeletion)
{
m_DelayedDeletion->CleanupPendingMainThreadPointers();
if(cleanup)
m_DelayedDeletion->DeallocateLocalMemory();
}
}
template <class UnderlyingAllocator>
UnderlyingAllocator* DualThreadAllocator<UnderlyingAllocator>::GetCurrentAllocator()
{
if(Thread::CurrentThreadIsMainThread())
return m_MainAllocator;
else
return m_ThreadAllocator;
}
template <class UnderlyingAllocator>
void* DualThreadAllocator<UnderlyingAllocator>::Allocate( size_t size, int align )
{
UnderlyingAllocator* alloc = GetCurrentAllocator();
bool isMainThread = alloc == m_MainAllocator;
if(isMainThread && m_DelayedDeletion && m_DelayedDeletion->HasPending())
m_DelayedDeletion->CleanupPendingMainThreadPointers();
return alloc->UnderlyingAllocator::Allocate(size, align);
}
template <class UnderlyingAllocator>
void* DualThreadAllocator<UnderlyingAllocator>::Reallocate( void* p, size_t size, int align )
{
UnderlyingAllocator* alloc = GetCurrentAllocator();
if(alloc->UnderlyingAllocator::Contains(p))
return alloc->UnderlyingAllocator::Reallocate(p, size, align);
UnderlyingAllocator* containingAlloc = NULL;
if (alloc == m_MainAllocator)
{
Assert(m_ThreadAllocator->UnderlyingAllocator::Contains(p));
containingAlloc = m_ThreadAllocator;
}
else
{
Assert(m_MainAllocator->UnderlyingAllocator::Contains(p));
containingAlloc = m_MainAllocator;
}
size_t oldSize = containingAlloc->UnderlyingAllocator::GetPtrSize(p);
void* ptr = alloc->UnderlyingAllocator::Allocate(size, align);
memcpy(ptr, p, std::min(size,oldSize));
Deallocate(p);
return ptr;
}
template <class UnderlyingAllocator>
void DualThreadAllocator<UnderlyingAllocator>::Deallocate( void* p )
{
UnderlyingAllocator* alloc = GetCurrentAllocator();
if(alloc->UnderlyingAllocator::Contains(p))
return alloc->UnderlyingAllocator::Deallocate(p);
if (alloc == m_MainAllocator)
{
DebugAssert(m_ThreadAllocator->UnderlyingAllocator::Contains(p));
m_ThreadAllocator->UnderlyingAllocator::Deallocate(p);
}
else
{
DebugAssert(m_MainAllocator->UnderlyingAllocator::Contains(p));
if(!m_DelayedDeletion)
{
SET_ALLOC_OWNER(NULL);
m_DelayedDeletion = UNITY_NEW(DelayedPointerDeletionManager(m_MainAllocator, m_ThreadAllocator), kMemManager);
}
m_DelayedDeletion->AddPointerToMainThreadDealloc(p);
}
}
template <class UnderlyingAllocator>
bool DualThreadAllocator<UnderlyingAllocator>::TryDeallocate( void* p )
{
UnderlyingAllocator* alloc = GetCurrentAllocator();
if(alloc->UnderlyingAllocator::Contains(p))
{
alloc->UnderlyingAllocator::Deallocate(p);
return true;
}
if (m_ThreadAllocator->UnderlyingAllocator::Contains(p))
{
m_ThreadAllocator->UnderlyingAllocator::Deallocate(p);
return true;
}
if(m_MainAllocator->UnderlyingAllocator::Contains(p))
{
if(!m_DelayedDeletion)
m_DelayedDeletion = UNITY_NEW(DelayedPointerDeletionManager(m_MainAllocator, m_ThreadAllocator), kMemManager);
m_DelayedDeletion->AddPointerToMainThreadDealloc(p);
return true;
}
return false;
}
template <class UnderlyingAllocator>
bool DualThreadAllocator<UnderlyingAllocator>::Contains( const void* p )
{
UnderlyingAllocator* alloc = GetCurrentAllocator();
if(alloc->UnderlyingAllocator::Contains(p))
return true;
if(m_ThreadAllocator->UnderlyingAllocator::Contains(p))
return true;
if(m_MainAllocator->UnderlyingAllocator::Contains(p))
return true;
return false;
}
template <class UnderlyingAllocator>
size_t DualThreadAllocator<UnderlyingAllocator>::GetAllocatedMemorySize( ) const
{
return m_MainAllocator->GetAllocatedMemorySize() + (m_ThreadAllocator?m_ThreadAllocator->GetAllocatedMemorySize():0);
}
template <class UnderlyingAllocator>
size_t DualThreadAllocator<UnderlyingAllocator>::GetAllocatorSizeTotalUsed() const
{
return m_MainAllocator->GetAllocatorSizeTotalUsed() + (m_ThreadAllocator?m_ThreadAllocator->GetAllocatorSizeTotalUsed():0);
}
template <class UnderlyingAllocator>
size_t DualThreadAllocator<UnderlyingAllocator>::GetReservedSizeTotal() const
{
return m_MainAllocator->GetReservedSizeTotal() + (m_ThreadAllocator?m_ThreadAllocator->GetReservedSizeTotal():0);
}
template <class UnderlyingAllocator>
size_t DualThreadAllocator<UnderlyingAllocator>::GetPtrSize( const void* ptr ) const
{
// all allocators have the same allocation header
return m_MainAllocator->UnderlyingAllocator::GetPtrSize(ptr);
}
template <class UnderlyingAllocator>
ProfilerAllocationHeader* DualThreadAllocator<UnderlyingAllocator>::GetProfilerHeader( const void* ptr ) const
{
return m_MainAllocator->UnderlyingAllocator::GetProfilerHeader(ptr);
}
template <class UnderlyingAllocator>
bool DualThreadAllocator<UnderlyingAllocator>::CheckIntegrity()
{
bool valid = m_ThreadAllocator->UnderlyingAllocator::CheckIntegrity();
if(Thread::CurrentThreadIsMainThread())
valid &= m_MainAllocator->UnderlyingAllocator::CheckIntegrity();
Assert(valid);
return valid;
}
template <class UnderlyingAllocator>
bool DualThreadAllocator<UnderlyingAllocator>::ValidatePointer(void* ptr)
{
UnderlyingAllocator* alloc = GetCurrentAllocator();
return alloc->UnderlyingAllocator::ValidatePointer(ptr);
}
template class DualThreadAllocator< DynamicHeapAllocator< LowLevelAllocator > >;
#endif // #if ENABLE_MEMORY_MANAGER
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