mirror of
https://git.eden-emu.dev/eden-emu/eden
synced 2026-04-10 09:48:58 +02:00
83a28dc251
for core stuff: just remove unique ptrs that dont need any pointer stability at all (afterall its an allocation within an allocation so yeah) for fibers: Main reasoning behind this is because virtualBuffer<> is stupidly fucking expensive and it also clutters my fstat view ALSO mmap is a syscall, syscalls are bad for performance or whatever ALSO std::vector<> is better suited for handling this kind of "fixed size thing where its like big but not THAT big" (512 KiB isn't going to kill your memory usage for each fiber...) for core.cpp stuff - inlines stuff into std::optional<> as opposed to std::unique_ptr<> (because yknow, we are making the Impl from an unique_ptr, allocating within an allocation is unnecessary) - reorganizes the structures a bit so padding doesnt screw us up (it's not perfect but eh saves a measly 44 bytes) - removes unused/dead code - uses std::vector<> instead of std::deque<> no perf impact expected, maybe some initialisation boost but very minimal impact nonethless lto gets rid of most calls anyways - the heavy issue is with shared_ptr and the cache coherency from the atomics... but i clumped them together because well, they kinda do not suffer from cache coherency - hopefully not a mistake this balloons the size of Impl to about 1.67 MB - which is fine because we throw it in the stack anyways REST OF INTERFACES: most of them ballooned in size as well, but overhead is ok since its an allocation within an alloc, no stack is used (when it comes to storing these i mean) Signed-off-by: lizzie lizzie@eden-emu.dev Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3306 Reviewed-by: CamilleLaVey <camillelavey99@gmail.com> Reviewed-by: MaranBr <maranbr@eden-emu.dev> Co-authored-by: lizzie <lizzie@eden-emu.dev> Co-committed-by: lizzie <lizzie@eden-emu.dev>
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <chrono>
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#include <memory>
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#include <ratio>
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#include "common/common_types.h"
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namespace Common {
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class WallClock {
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public:
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static constexpr u64 CNTFRQ = 19'200'000; // CNTPCT_EL0 Frequency = 19.2 MHz
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static constexpr u64 GPUTickFreq = 614'400'000; // GM20B GPU Tick Frequency = 614.4 MHz
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static constexpr u64 CPUTickFreq = 1'020'000'000; // T210/4 A57 CPU Tick Frequency = 1020.0 MHz
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virtual ~WallClock() = default;
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/// @returns The time in nanoseconds since the construction of this clock.
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virtual std::chrono::nanoseconds GetTimeNS() const = 0;
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/// @returns The time in microseconds since the construction of this clock.
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virtual std::chrono::microseconds GetTimeUS() const = 0;
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/// @returns The time in milliseconds since the construction of this clock.
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virtual std::chrono::milliseconds GetTimeMS() const = 0;
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/// @returns The guest CNTPCT ticks since the construction of this clock.
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virtual s64 GetCNTPCT() const = 0;
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/// @returns The guest GPU ticks since the construction of this clock.
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virtual s64 GetGPUTick() const = 0;
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/// @returns The raw host timer ticks since an indeterminate epoch.
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virtual s64 GetUptime() const = 0;
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/// @returns Whether the clock directly uses the host's hardware clock.
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virtual bool IsNative() const = 0;
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static inline u64 NSToCNTPCT(u64 ns) {
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return ns * NsToCNTPCTRatio::num / NsToCNTPCTRatio::den;
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}
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static inline u64 NSToGPUTick(u64 ns) {
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return ns * NsToGPUTickRatio::num / NsToGPUTickRatio::den;
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}
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// Cycle Timing
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static inline u64 CPUTickToNS(u64 cpu_tick) {
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return cpu_tick * CPUTickToNsRatio::num / CPUTickToNsRatio::den;
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}
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static inline u64 CPUTickToUS(u64 cpu_tick) {
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return cpu_tick * CPUTickToUsRatio::num / CPUTickToUsRatio::den;
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}
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static inline u64 CPUTickToCNTPCT(u64 cpu_tick) {
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return cpu_tick * CPUTickToCNTPCTRatio::num / CPUTickToCNTPCTRatio::den;
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}
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static inline u64 CPUTickToGPUTick(u64 cpu_tick) {
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return cpu_tick * CPUTickToGPUTickRatio::num / CPUTickToGPUTickRatio::den;
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}
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protected:
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using NsRatio = std::nano;
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using UsRatio = std::micro;
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using MsRatio = std::milli;
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using NsToUsRatio = std::ratio_divide<std::nano, std::micro>;
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using NsToMsRatio = std::ratio_divide<std::nano, std::milli>;
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using NsToCNTPCTRatio = std::ratio<CNTFRQ, std::nano::den>;
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using NsToGPUTickRatio = std::ratio<GPUTickFreq, std::nano::den>;
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// Cycle Timing
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using CPUTickToNsRatio = std::ratio<std::nano::den, CPUTickFreq>;
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using CPUTickToUsRatio = std::ratio<std::micro::den, CPUTickFreq>;
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using CPUTickToCNTPCTRatio = std::ratio<CNTFRQ, CPUTickFreq>;
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using CPUTickToGPUTickRatio = std::ratio<GPUTickFreq, CPUTickFreq>;
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};
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[[nodiscard]] std::unique_ptr<WallClock> CreateOptimalClock();
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} // namespace Common
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