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#include "deimos/core/allocator.h"
#include <cstdlib>
namespace deimos
{
class SystemAllocatorImpl : public IAllocator
{
public:
void* Reallocate(
void* old_ptr, int64_t /* old_size */, int64_t new_size,
MemoryScope /* scope */, const SourceLocation& /* source_location */) override
{
if (old_ptr == nullptr)
{
return new_size > 0 ? ::malloc((uint64_t)new_size) : nullptr;
}
if (new_size == 0)
{
if (old_ptr != nullptr)
{
::free(old_ptr);
}
}
else
{
return ::realloc(old_ptr, (uint64_t)new_size);
}
return nullptr;
}
};
class AllocatorApiImpl : public AllocatorApi
{
SystemAllocatorImpl m_system_impl;
Allocator m_system;
public:
constexpr AllocatorApiImpl() :
m_system{ &m_system_impl, {0} }
{
system = &m_system;
}
Allocator* CreateChild(Allocator* parent, gsl::czstring /* description */) override
{
return parent;
}
void DestroyChild(Allocator*) override
{
}
};
AllocatorApi* BootstrapAllocatorApi()
{
static constinit AllocatorApiImpl g_instance{};
return &g_instance;
}
} // namespace deimos
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