From 01dc06934fa66465fff2b89e7ea249610b35189b Mon Sep 17 00:00:00 2001
From: j2-tulloch <james2.tulloch@live.uwe.ac.uk>
Date: Wed, 20 Dec 2023 21:00:22 +0000
Subject: [PATCH] Upload New File
---
Worksheet2/bumpalld.hpp | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 Worksheet2/bumpalld.hpp
diff --git a/Worksheet2/bumpalld.hpp b/Worksheet2/bumpalld.hpp
new file mode 100644
index 0000000..220f980
--- /dev/null
+++ b/Worksheet2/bumpalld.hpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <cstddef>
+
+class BumpAllocator {
+ char* start; // Pointer to the start of the allocated memory block
+ char* current; // Pointer to the current position in the memory block (end side)
+ size_t size; // Total size of the memory block
+
+public:
+ // Constructor for the BumpAllocator
+ BumpAllocator(size_t size) : size(size) {
+ start = new char[size]; // Allocate a memory block of the given size
+ current = start + size; // Initialize the current pointer to the end of the block
+ }
+
+ // Function to allocate memory within the block, moving downwards
+ void* allocate(size_t allocSize) {
+ // Check if there is enough space left in the block for the requested size
+ if (current - allocSize < start) {
+ //std::cout << "Not enough space in the block for allocation!" << std::endl;
+ return nullptr; // Return nullptr if there is not enough space
+ }
+ current -= allocSize; // "Bump" the current pointer backward by the requested size
+ //std::cout << "Memory allocated successfully!" << std::endl;
+ return current; // Return the new current position (start of allocated block)
+ }
+
+ // Function to reset the allocator
+ void reset() {
+ current = start + size; // Reset the current pointer back to the end of the block
+ //std::cout << "Allocator reset!" << std::endl;
+ }
+
+ // Destructor for the BumpAllocator
+ ~BumpAllocator() {
+ delete[] start; // Deallocate the memory block when the allocator is destroyed
+ //std::cout << "Memory block deallocated!" << std::endl;
+ }
+};
+
--
GitLab