From ec6226e561dcaa965106e30cc72f6b48b95c3de5 Mon Sep 17 00:00:00 2001
From: j2-tulloch <james2.tulloch@live.uwe.ac.uk>
Date: Fri, 5 Jan 2024 14:48:25 +0000
Subject: [PATCH] Upload New File
---
Assignment/Task 3/fiber.cpp | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 Assignment/Task 3/fiber.cpp
diff --git a/Assignment/Task 3/fiber.cpp b/Assignment/Task 3/fiber.cpp
new file mode 100644
index 0000000..a42f833
--- /dev/null
+++ b/Assignment/Task 3/fiber.cpp
@@ -0,0 +1,35 @@
+#include "fiber.h"
+#include "scheduler.h"
+#include <cstring>
+extern scheduler s;
+
+fiber::fiber(void (*function)(void*), void* data) : data_(data), is_finished(false) {
+ // Align the stack, set RIP, RSP, etc.
+ // Allocate the stack
+ std::memset(stack_.data(), 0, stack_.size());
+ stack_bottom_ = stack_.data();
+ stack_top_ = stack_bottom_ + stack_.size();
+
+ // Align the stack top to 16 bytes as per System V ABI requirements
+ stack_top_ = reinterpret_cast<char*>((reinterpret_cast<uintptr_t>(stack_top_) & -16L) - 128);
+
+ // Set the context
+ context_.rip = reinterpret_cast<void*>(function);
+ context_.rsp = reinterpret_cast<void*>(stack_top_);
+ // Other registers (rbx, rbp, r12-r15) will be set when saving context
+}
+
+fiber::~fiber() {
+ // Clean up, if needed
+}
+
+Context* fiber::get_context() {
+ return &context_;
+}
+
+void* fiber::get_data() const {
+ return data_;
+}
+void fiber::yield() {
+ s.yield(this);
+}
--
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