common/timer: Remove

This is a leftover from citra and dolphin that isn't used at all,
particularly given the <chrono> header exists.

src/common/CMakeLists.txt

@@ -166,8 +166,6 @@ add_library(common STATIC
     threadsafe_queue.h
     time_zone.cpp
     time_zone.h
-    timer.cpp
-    timer.h
     tree.h
     uint128.cpp
     uint128.h

src/common/timer.cpp

-// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <ctime>
-#include <fmt/format.h>
-#include "common/common_types.h"
-#include "common/string_util.h"
-#include "common/timer.h"
-
-namespace Common {
-
-std::chrono::milliseconds Timer::GetTimeMs() {
-    return std::chrono::duration_cast<std::chrono::milliseconds>(
-        std::chrono::system_clock::now().time_since_epoch());
-}
-
-// --------------------------------------------
-// Initiate, Start, Stop, and Update the time
-// --------------------------------------------
-
-// Set initial values for the class
-Timer::Timer() : m_LastTime(0), m_StartTime(0), m_Running(false) {
-    Update();
-}
-
-// Write the starting time
-void Timer::Start() {
-    m_StartTime = GetTimeMs();
-    m_Running = true;
-}
-
-// Stop the timer
-void Timer::Stop() {
-    // Write the final time
-    m_LastTime = GetTimeMs();
-    m_Running = false;
-}
-
-// Update the last time variable
-void Timer::Update() {
-    m_LastTime = GetTimeMs();
-    // TODO(ector) - QPF
-}
-
-// -------------------------------------
-// Get time difference and elapsed time
-// -------------------------------------
-
-// Get the number of milliseconds since the last Update()
-std::chrono::milliseconds Timer::GetTimeDifference() {
-    return GetTimeMs() - m_LastTime;
-}
-
-// Add the time difference since the last Update() to the starting time.
-// This is used to compensate for a paused game.
-void Timer::AddTimeDifference() {
-    m_StartTime += GetTimeDifference();
-}
-
-// Get the time elapsed since the Start()
-std::chrono::milliseconds Timer::GetTimeElapsed() {
-    // If we have not started yet, return 1 (because then I don't
-    // have to change the FPS calculation in CoreRerecording.cpp .
-    if (m_StartTime.count() == 0)
-        return std::chrono::milliseconds(1);
-
-    // Return the final timer time if the timer is stopped
-    if (!m_Running)
-        return (m_LastTime - m_StartTime);
-
-    return (GetTimeMs() - m_StartTime);
-}
-
-// Get the formatted time elapsed since the Start()
-std::string Timer::GetTimeElapsedFormatted() const {
-    // If we have not started yet, return zero
-    if (m_StartTime.count() == 0)
-        return "00:00:00:000";
-
-    // The number of milliseconds since the start.
-    // Use a different value if the timer is stopped.
-    std::chrono::milliseconds Milliseconds;
-    if (m_Running)
-        Milliseconds = GetTimeMs() - m_StartTime;
-    else
-        Milliseconds = m_LastTime - m_StartTime;
-    // Seconds
-    std::chrono::seconds Seconds = std::chrono::duration_cast<std::chrono::seconds>(Milliseconds);
-    // Minutes
-    std::chrono::minutes Minutes = std::chrono::duration_cast<std::chrono::minutes>(Milliseconds);
-    // Hours
-    std::chrono::hours Hours = std::chrono::duration_cast<std::chrono::hours>(Milliseconds);
-
-    std::string TmpStr = fmt::format("{:02}:{:02}:{:02}:{:03}", Hours.count(), Minutes.count() % 60,
-                                     Seconds.count() % 60, Milliseconds.count() % 1000);
-    return TmpStr;
-}
-
-// Get the number of seconds since January 1 1970
-std::chrono::seconds Timer::GetTimeSinceJan1970() {
-    return std::chrono::duration_cast<std::chrono::seconds>(GetTimeMs());
-}
-
-std::chrono::seconds Timer::GetLocalTimeSinceJan1970() {
-    time_t sysTime, tzDiff, tzDST;
-    struct tm* gmTime;
-
-    time(&sysTime);
-
-    // Account for DST where needed
-    gmTime = localtime(&sysTime);
-    if (gmTime->tm_isdst == 1)
-        tzDST = 3600;
-    else
-        tzDST = 0;
-
-    // Lazy way to get local time in sec
-    gmTime = gmtime(&sysTime);
-    tzDiff = sysTime - mktime(gmTime);
-
-    return std::chrono::seconds(sysTime + tzDiff + tzDST);
-}
-
-// Return the current time formatted as Minutes:Seconds:Milliseconds
-// in the form 00:00:000.
-std::string Timer::GetTimeFormatted() {
-    time_t sysTime;
-    struct tm* gmTime;
-    char tmp[13];
-
-    time(&sysTime);
-    gmTime = localtime(&sysTime);
-
-    strftime(tmp, 6, "%M:%S", gmTime);
-
-    u64 milliseconds = static_cast<u64>(GetTimeMs().count()) % 1000;
-    return fmt::format("{}:{:03}", tmp, milliseconds);
-}
-
-// Returns a timestamp with decimals for precise time comparisons
-// ----------------
-double Timer::GetDoubleTime() {
-    // Get continuous timestamp
-    auto tmp_seconds = static_cast<u64>(GetTimeSinceJan1970().count());
-    const auto ms = static_cast<double>(static_cast<u64>(GetTimeMs().count()) % 1000);
-
-    // Remove a few years. We only really want enough seconds to make
-    // sure that we are detecting actual actions, perhaps 60 seconds is
-    // enough really, but I leave a year of seconds anyway, in case the
-    // user's clock is incorrect or something like that.
-    tmp_seconds = tmp_seconds - (38 * 365 * 24 * 60 * 60);
-
-    // Make a smaller integer that fits in the double
-    const auto seconds = static_cast<u32>(tmp_seconds);
-    return seconds + ms;
-}
-
-} // Namespace Common

src/common/timer.h

-// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <chrono>
-#include <string>
-#include "common/common_types.h"
-
-namespace Common {
-class Timer {
-public:
-    Timer();
-
-    void Start();
-    void Stop();
-    void Update();
-
-    // The time difference is always returned in milliseconds, regardless of alternative internal
-    // representation
-    [[nodiscard]] std::chrono::milliseconds GetTimeDifference();
-    void AddTimeDifference();
-
-    [[nodiscard]] static std::chrono::seconds GetTimeSinceJan1970();
-    [[nodiscard]] static std::chrono::seconds GetLocalTimeSinceJan1970();
-    [[nodiscard]] static double GetDoubleTime();
-
-    [[nodiscard]] static std::string GetTimeFormatted();
-    [[nodiscard]] std::string GetTimeElapsedFormatted() const;
-    [[nodiscard]] std::chrono::milliseconds GetTimeElapsed();
-
-    [[nodiscard]] static std::chrono::milliseconds GetTimeMs();
-
-private:
-    std::chrono::milliseconds m_LastTime;
-    std::chrono::milliseconds m_StartTime;
-    bool m_Running;
-};
-
-} // Namespace Common