From 617ebd0bd744613201aa3e19d217da89a735f3e0 Mon Sep 17 00:00:00 2001
From: j2-pelczar <jakub2.pelczar@live.uwe.ac.uk>
Date: Wed, 27 Nov 2024 21:38:32 +0000
Subject: [PATCH] Upload New File
---
worksheet_two/task_3/bump_allocator.hpp | 51 +++++++++++++++++++++++++
1 file changed, 51 insertions(+)
create mode 100644 worksheet_two/task_3/bump_allocator.hpp
diff --git a/worksheet_two/task_3/bump_allocator.hpp b/worksheet_two/task_3/bump_allocator.hpp
new file mode 100644
index 0000000..2c87663
--- /dev/null
+++ b/worksheet_two/task_3/bump_allocator.hpp
@@ -0,0 +1,51 @@
+#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
--
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