summaryrefslogtreecommitdiffstats
path: root/src/core/host_timing.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/host_timing.h')
-rw-r--r--src/core/host_timing.h160
1 files changed, 0 insertions, 160 deletions
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