From 48fa3b7a0f2054a836b0a8061e6b082c246b5ae0 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Wed, 1 Apr 2020 17:28:49 -0400
Subject: General: Cleanup legacy code.

---
 src/core/host_timing.h | 160 -------------------------------------------------
 1 file changed, 160 deletions(-)
 delete mode 100644 src/core/host_timing.h

(limited to 'src/core/host_timing.h')

diff --git a/src/core/host_timing.h b/src/core/host_timing.h
deleted file mode 100644
index be6b68d7c..000000000
--- a/src/core/host_timing.h
+++ /dev/null
@@ -1,160 +0,0 @@
-// Copyright 2020 yuzu Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <atomic>
-#include <chrono>
-#include <functional>
-#include <memory>
-#include <mutex>
-#include <optional>
-#include <string>
-#include <thread>
-#include <vector>
-
-#include "common/common_types.h"
-#include "common/spin_lock.h"
-#include "common/thread.h"
-#include "common/threadsafe_queue.h"
-#include "common/wall_clock.h"
-#include "core/hardware_properties.h"
-
-namespace Core::HostTiming {
-
-/// A callback that may be scheduled for a particular core timing event.
-using TimedCallback = std::function<void(u64 userdata, s64 cycles_late)>;
-
-/// Contains the characteristics of a particular event.
-struct EventType {
-    EventType(TimedCallback&& callback, std::string&& name)
-        : callback{std::move(callback)}, name{std::move(name)} {}
-
-    /// The event's callback function.
-    TimedCallback callback;
-    /// A pointer to the name of the event.
-    const std::string name;
-};
-
-/**
- * This is a system to schedule events into the emulated machine's future. Time is measured
- * in main CPU clock cycles.
- *
- * To schedule an event, you first have to register its type. This is where you pass in the
- * callback. You then schedule events using the type id you get back.
- *
- * The int cyclesLate that the callbacks get is how many cycles late it was.
- * So to schedule a new event on a regular basis:
- * inside callback:
- *   ScheduleEvent(periodInCycles - cyclesLate, callback, "whatever")
- */
-class CoreTiming {
-public:
-    CoreTiming();
-    ~CoreTiming();
-
-    CoreTiming(const CoreTiming&) = delete;
-    CoreTiming(CoreTiming&&) = delete;
-
-    CoreTiming& operator=(const CoreTiming&) = delete;
-    CoreTiming& operator=(CoreTiming&&) = delete;
-
-    /// CoreTiming begins at the boundary of timing slice -1. An initial call to Advance() is
-    /// required to end slice - 1 and start slice 0 before the first cycle of code is executed.
-    void Initialize();
-
-    /// Tears down all timing related functionality.
-    void Shutdown();
-
-    /// Pauses/Unpauses the execution of the timer thread.
-    void Pause(bool is_paused);
-
-    /// Pauses/Unpauses the execution of the timer thread and waits until paused.
-    void SyncPause(bool is_paused);
-
-    /// Checks if core timing is running.
-    bool IsRunning() const;
-
-    /// Checks if the timer thread has started.
-    bool HasStarted() const {
-        return has_started;
-    }
-
-    /// Checks if there are any pending time events.
-    bool HasPendingEvents() const;
-
-    /// Schedules an event in core timing
-    void ScheduleEvent(s64 ns_into_future, const std::shared_ptr<EventType>& event_type,
-                       u64 userdata = 0);
-
-    void UnscheduleEvent(const std::shared_ptr<EventType>& event_type, u64 userdata);
-
-    /// We only permit one event of each type in the queue at a time.
-    void RemoveEvent(const std::shared_ptr<EventType>& event_type);
-
-    void AddTicks(std::size_t core_index, u64 ticks);
-
-    void ResetTicks(std::size_t core_index);
-
-    /// Returns current time in emulated CPU cycles
-    u64 GetCPUTicks() const;
-
-    /// Returns current time in emulated in Clock cycles
-    u64 GetClockTicks() const;
-
-    /// Returns current time in microseconds.
-    std::chrono::microseconds GetGlobalTimeUs() const;
-
-    /// Returns current time in nanoseconds.
-    std::chrono::nanoseconds GetGlobalTimeNs() const;
-
-    /// Checks for events manually and returns time in nanoseconds for next event, threadsafe.
-    std::optional<u64> Advance();
-
-private:
-    struct Event;
-
-    /// Clear all pending events. This should ONLY be done on exit.
-    void ClearPendingEvents();
-
-    static void ThreadEntry(CoreTiming& instance);
-    void ThreadLoop();
-
-    std::unique_ptr<Common::WallClock> clock;
-
-    u64 global_timer = 0;
-
-    std::chrono::nanoseconds start_point;
-
-    // The queue is a min-heap using std::make_heap/push_heap/pop_heap.
-    // We don't use std::priority_queue because we need to be able to serialize, unserialize and
-    // erase arbitrary events (RemoveEvent()) regardless of the queue order. These aren't
-    // accomodated by the standard adaptor class.
-    std::vector<Event> event_queue;
-    u64 event_fifo_id = 0;
-
-    std::shared_ptr<EventType> ev_lost;
-    Common::Event event{};
-    Common::SpinLock basic_lock{};
-    Common::SpinLock advance_lock{};
-    std::unique_ptr<std::thread> timer_thread;
-    std::atomic<bool> paused{};
-    std::atomic<bool> paused_set{};
-    std::atomic<bool> wait_set{};
-    std::atomic<bool> shutting_down{};
-    std::atomic<bool> has_started{};
-
-    std::array<std::atomic<u64>, Core::Hardware::NUM_CPU_CORES> ticks_count{};
-};
-
-/// Creates a core timing event with the given name and callback.
-///
-/// @param name     The name of the core timing event to create.
-/// @param callback The callback to execute for the event.
-///
-/// @returns An EventType instance representing the created event.
-///
-std::shared_ptr<EventType> CreateEvent(std::string name, TimedCallback&& callback);
-
-} // namespace Core::HostTiming
-- 
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