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worksheet_two/task_2_unit_tests/bump_allocator.hpp

+#ifndef BUMP_ALLOCATOR_HPP
+#define BUMP_ALLOCATOR_HPP
+
+#include <cstddef>  
+#include <iostream> 
+
+class BumpAllocator {
+private:
+    char* memory;      
+    char* next;          
+    std::size_t capacity; 
+    std::size_t used;     
+
+public:
+    
+    explicit BumpAllocator(std::size_t size)
+        : memory(new char[size]), next(memory), capacity(size), used(0) {}
+
+ 
+    ~BumpAllocator() {
+        delete[] memory;
+    }
+
+
+    template <typename T>
+    T* alloc(std::size_t count = 1) {
+        std::size_t requiredBytes = count * sizeof(T);
+        if (next + requiredBytes > memory + capacity) {
+            std::cerr << "Out of memory: cannot allocate " << requiredBytes << " bytes.\n";
+            return nullptr;
+        }
+        T* allocation = reinterpret_cast<T*>(next);
+        next += requiredBytes;
+        ++used;
+        return allocation;
+    }
+
+    
+    void dealloc() {
+        if (used > 0) {
+            --used;
+            if (used == 0) {
+                next = memory; 
+            }
+        } else {
+            std::cerr << "Error: No allocations to deallocate.\n";
+        }
+    }
+
+    
+    void printStatus() const {
+        std::cout << "Allocator status:\n";
+        std::cout << "  Capacity: " << capacity << " bytes\n";
+        std::cout << "  Used: " << (next - memory) << " bytes\n";
+        std::cout << "  Allocations: " << used << "\n";
+    }
+};
+
+#endif