allocator.h

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#pragma once
 
#include <stddef.h>
#include <string.h>
 
namespace fl {
 
void SetLargeBlockAllocator(void *(*alloc)(size_t), void (*free)(void *));
void *LargeBlockAllocate(size_t size, bool zero = true);
void LargeBlockDeallocate(void *ptr);
 
template <typename T> class LargeBlockAllocator {
  public:
    static T *Alloc(size_t n) {
        void *ptr = LargeBlockAllocate(sizeof(T) * n, true);
        return reinterpret_cast<T *>(ptr);
    }
 
    static void Free(T *p) {
        if (p == nullptr) {
            return;
        }
        LargeBlockDeallocate(p);
    }
};
 
} // namespace fl