Started with a rough structure

src/GC/include/heap.hpp

@@ -0,0 +1,62 @@
+#pragma once
+
+#include <assert.h>
+#include <iostream>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <vector>
+
+#include "allocator.hpp"
+
+#define HEAP_SIZE   65536
+
+namespace GC {
+
+class Heap {
+public:
+
+    static Heap &the() {
+        if (s_instance)
+            return *s_instance;
+        s_instance = new Heap();
+        return *s_instance;
+    }
+
+    ~Heap() {
+
+    }
+
+    size_t getHeapSize() {
+        return heap_size;
+    }
+
+    Allocator *getAllocator(size_t size) {
+        for (auto *alloc : h_allocs) {
+            if (alloc->getSize() >= size)
+                return alloc;
+        }
+        std::cout << "Object too big" << std::endl;
+        assert(false);
+    }
+
+    void collect();
+
+private:
+    inline static Heap *s_instance = nullptr;
+
+    Heap() {
+        h_allocs.push_back(new Allocator(16));
+        h_allocs.push_back(new Allocator(32));
+        h_allocs.push_back(new Allocator(64));
+        h_allocs.push_back(new Allocator(128));
+        h_allocs.push_back(new Allocator(256));
+        h_allocs.push_back(new Allocator(512));
+        h_allocs.push_back(new Allocator(1024));
+    }
+
+    char _heap[HEAP_SIZE] = {0};
+    size_t heap_size = 0;
+    std::vector<Allocator *> h_allocs;
+};
+
+}