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// Copyright Epic Games, Inc. All Rights Reserved.
#include <string.h>
#include <zencore/memory/fmalloc.h>
#include <zencore/memory/memory.h>
namespace zen {
//////////////////////////////////////////////////////////////////////////
class FInitialMalloc : public FMalloc
{
virtual void* Malloc(size_t Count, uint32_t Alignment = DEFAULT_ALIGNMENT) override
{
Memory::Initialize();
return GMalloc->Malloc(Count, Alignment);
}
virtual void* TryMalloc(size_t Count, uint32_t Alignment = DEFAULT_ALIGNMENT) override
{
Memory::Initialize();
return GMalloc->TryMalloc(Count, Alignment);
}
virtual void* Realloc(void* Original, size_t Count, uint32_t Alignment = DEFAULT_ALIGNMENT) override
{
Memory::Initialize();
return GMalloc->Realloc(Original, Count, Alignment);
}
virtual void* TryRealloc(void* Original, size_t Count, uint32_t Alignment = DEFAULT_ALIGNMENT) override
{
Memory::Initialize();
return GMalloc->TryRealloc(Original, Count, Alignment);
}
virtual void Free(void* Original) override
{
Memory::Initialize();
return GMalloc->Free(Original);
}
virtual void* MallocZeroed(size_t Count, uint32_t Alignment = DEFAULT_ALIGNMENT) override
{
Memory::Initialize();
return GMalloc->MallocZeroed(Count, Alignment);
}
virtual void* TryMallocZeroed(size_t Count, uint32_t Alignment = DEFAULT_ALIGNMENT) override
{
Memory::Initialize();
return GMalloc->TryMallocZeroed(Count, Alignment);
}
virtual size_t QuantizeSize(size_t Count, uint32_t Alignment) override
{
Memory::Initialize();
return GMalloc->QuantizeSize(Count, Alignment);
}
virtual bool GetAllocationSize(void* Original, size_t& SizeOut) override
{
Memory::Initialize();
return GMalloc->GetAllocationSize(Original, SizeOut);
}
virtual void OnMallocInitialized() override {}
virtual void Trim(bool bTrimThreadCaches) override { ZEN_UNUSED(bTrimThreadCaches); }
} GInitialMalloc;
FMalloc* GMalloc = &GInitialMalloc; /* Memory allocator */
//////////////////////////////////////////////////////////////////////////
void*
FUseSystemMallocForNew::operator new(size_t Size)
{
return Memory::SystemMalloc(Size);
}
void
FUseSystemMallocForNew::operator delete(void* Ptr)
{
Memory::SystemFree(Ptr);
}
void*
FUseSystemMallocForNew::operator new[](size_t Size)
{
return Memory::SystemMalloc(Size);
}
void
FUseSystemMallocForNew::operator delete[](void* Ptr)
{
Memory::SystemFree(Ptr);
}
//////////////////////////////////////////////////////////////////////////
void*
FMalloc::TryRealloc(void* Original, size_t Count, uint32_t Alignment)
{
return Realloc(Original, Count, Alignment);
}
void*
FMalloc::TryMalloc(size_t Count, uint32_t Alignment)
{
return Malloc(Count, Alignment);
}
void*
FMalloc::TryMallocZeroed(size_t Count, uint32_t Alignment)
{
return MallocZeroed(Count, Alignment);
}
void*
FMalloc::MallocZeroed(size_t Count, uint32_t Alignment)
{
void* const Memory = Malloc(Count, Alignment);
if (Memory)
{
::memset(Memory, 0, Count);
}
return Memory;
}
void
FMalloc::OutOfMemory(size_t Size, uint32_t Alignment)
{
ZEN_UNUSED(Size, Alignment);
// no-op by default
}
void
FMalloc::Trim(bool bTrimThreadCaches)
{
ZEN_UNUSED(bTrimThreadCaches);
}
void
FMalloc::OnMallocInitialized()
{
}
bool
FMalloc::GetAllocationSize(void* Original, size_t& SizeOut)
{
ZEN_UNUSED(Original, SizeOut);
return false; // Generic implementation has no way of determining this
}
size_t
FMalloc::QuantizeSize(size_t Count, uint32_t Alignment)
{
ZEN_UNUSED(Alignment);
return Count; // Generic implementation has no way of determining this
}
} // namespace zen
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