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// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <functional>
#include <memory>
#include "common/common_types.h"
#include "common/spin_lock.h"
#ifndef _MSC_VER
namespace boost::context::detail {
struct transfer_t;
}
#endif
namespace Common {
class Fiber {
public:
Fiber(std::function<void(void*)>&& entry_point_func, void* start_parameter);
~Fiber();
Fiber(const Fiber&) = delete;
Fiber& operator=(const Fiber&) = delete;
Fiber(Fiber&&) = default;
Fiber& operator=(Fiber&&) = default;
/// Yields control from Fiber 'from' to Fiber 'to'
/// Fiber 'from' must be the currently running fiber.
static void YieldTo(std::shared_ptr<Fiber> from, std::shared_ptr<Fiber> to);
static std::shared_ptr<Fiber> ThreadToFiber();
/// Only call from main thread's fiber
void Exit();
/// Changes the start parameter of the fiber. Has no effect if the fiber already started
void SetStartParameter(void* new_parameter) {
start_parameter = new_parameter;
}
private:
Fiber();
#ifdef _MSC_VER
void start();
static void FiberStartFunc(void* fiber_parameter);
#else
void start(boost::context::detail::transfer_t& transfer);
static void FiberStartFunc(boost::context::detail::transfer_t transfer);
#endif
struct FiberImpl;
SpinLock guard;
std::function<void(void*)> entry_point;
void* start_parameter;
std::shared_ptr<Fiber> previous_fiber;
std::unique_ptr<FiberImpl> impl;
bool is_thread_fiber{};
};
} // namespace Common
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