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worksheet_two/task_3/bump_allocator.hpp

+#ifndef BUMP_ALLOCATOR_HPP
+#define BUMP_ALLOCATOR_HPP
+
+#include <cstddef>
+#include <iostream>
+
+class BumpAllocator {
+private:
+    char* memory;
+    std::size_t size;
+    char* current_up;  // Pointer for bumping up
+    char* current_down; // Pointer for bumping down
+
+public:
+    BumpAllocator(std::size_t totalSize)
+        : size(totalSize), memory(new char[totalSize]) {
+        current_up = memory;
+        current_down = memory + size;
+    }
+
+    ~BumpAllocator() {
+        delete[] memory;
+    }
+
+    // Allocate by bumping up
+    void* allocateUp(std::size_t allocSize) {
+        if (current_up + allocSize > current_down) {
+            throw std::bad_alloc();
+        }
+        void* result = current_up;
+        current_up += allocSize;
+        return result;
+    }
+
+    // Allocate by bumping down
+    void* allocateDown(std::size_t allocSize) {
+        if (current_down - allocSize < current_up) {
+            throw std::bad_alloc();
+        }
+        current_down -= allocSize;
+        return current_down;
+    }
+
+    // Reset allocator
+    void reset() {
+        current_up = memory;
+        current_down = memory + size;
+    }
+};
+
+#endif