2018-07-24 05:03:24 -05:00
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// Copyright 2008 Dolphin Emulator Project / 2017 Citra Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "core/core_timing_util.h"
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#include <cinttypes>
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#include <limits>
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#include "common/logging/log.h"
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2019-02-15 18:04:11 -06:00
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#include "common/uint128.h"
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2020-08-22 19:27:31 -05:00
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#include "core/hardware_properties.h"
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2018-07-24 05:03:24 -05:00
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2019-02-12 11:32:15 -06:00
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namespace Core::Timing {
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2018-07-24 05:03:24 -05:00
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2020-02-11 17:56:24 -06:00
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constexpr u64 MAX_VALUE_TO_MULTIPLY = std::numeric_limits<s64>::max() / Hardware::BASE_CLOCK_RATE;
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2018-07-24 05:03:24 -05:00
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2019-06-04 18:52:42 -05:00
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s64 msToCycles(std::chrono::milliseconds ms) {
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if (static_cast<u64>(ms.count() / 1000) > MAX_VALUE_TO_MULTIPLY) {
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2018-07-24 05:03:24 -05:00
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LOG_ERROR(Core_Timing, "Integer overflow, use max value");
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return std::numeric_limits<s64>::max();
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}
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if (static_cast<u64>(ms.count()) > MAX_VALUE_TO_MULTIPLY) {
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2018-07-24 05:03:24 -05:00
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LOG_DEBUG(Core_Timing, "Time very big, do rounding");
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return Hardware::BASE_CLOCK_RATE * (ms.count() / 1000);
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}
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return (Hardware::BASE_CLOCK_RATE * ms.count()) / 1000;
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}
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2019-06-04 18:52:42 -05:00
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s64 usToCycles(std::chrono::microseconds us) {
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if (static_cast<u64>(us.count() / 1000000) > MAX_VALUE_TO_MULTIPLY) {
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2018-07-24 05:03:24 -05:00
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LOG_ERROR(Core_Timing, "Integer overflow, use max value");
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return std::numeric_limits<s64>::max();
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}
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2019-06-04 18:52:42 -05:00
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if (static_cast<u64>(us.count()) > MAX_VALUE_TO_MULTIPLY) {
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2018-07-24 05:03:24 -05:00
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LOG_DEBUG(Core_Timing, "Time very big, do rounding");
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return Hardware::BASE_CLOCK_RATE * (us.count() / 1000000);
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}
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return (Hardware::BASE_CLOCK_RATE * us.count()) / 1000000;
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2018-07-24 05:03:24 -05:00
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}
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2019-06-04 18:52:42 -05:00
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s64 nsToCycles(std::chrono::nanoseconds ns) {
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const u128 temporal = Common::Multiply64Into128(ns.count(), Hardware::BASE_CLOCK_RATE);
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return Common::Divide128On32(temporal, static_cast<u32>(1000000000)).first;
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2018-07-24 05:03:24 -05:00
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}
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2020-10-20 21:07:39 -05:00
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u64 msToClockCycles(std::chrono::milliseconds ns) {
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const u128 temp = Common::Multiply64Into128(ns.count(), Hardware::CNTFREQ);
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2020-02-10 12:45:08 -06:00
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return Common::Divide128On32(temp, 1000).first;
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}
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2020-10-20 21:07:39 -05:00
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u64 usToClockCycles(std::chrono::microseconds ns) {
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const u128 temp = Common::Multiply64Into128(ns.count(), Hardware::CNTFREQ);
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return Common::Divide128On32(temp, 1000000).first;
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}
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2020-02-05 17:12:27 -06:00
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u64 nsToClockCycles(std::chrono::nanoseconds ns) {
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const u128 temp = Common::Multiply64Into128(ns.count(), Hardware::CNTFREQ);
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return Common::Divide128On32(temp, 1000000000).first;
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}
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2019-02-15 11:15:28 -06:00
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u64 CpuCyclesToClockCycles(u64 ticks) {
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const u128 temporal = Common::Multiply64Into128(ticks, Hardware::CNTFREQ);
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return Common::Divide128On32(temporal, static_cast<u32>(Hardware::BASE_CLOCK_RATE)).first;
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}
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2020-03-28 14:23:28 -05:00
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std::chrono::milliseconds CyclesToMs(s64 cycles) {
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const u128 temporal = Common::Multiply64Into128(cycles, 1000);
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u64 ms = Common::Divide128On32(temporal, static_cast<u32>(Hardware::BASE_CLOCK_RATE)).first;
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return std::chrono::milliseconds(ms);
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}
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std::chrono::nanoseconds CyclesToNs(s64 cycles) {
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const u128 temporal = Common::Multiply64Into128(cycles, 1000000000);
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u64 ns = Common::Divide128On32(temporal, static_cast<u32>(Hardware::BASE_CLOCK_RATE)).first;
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return std::chrono::nanoseconds(ns);
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}
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std::chrono::microseconds CyclesToUs(s64 cycles) {
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2020-10-20 21:07:39 -05:00
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const u128 temporal = Common::Multiply64Into128(cycles, 1000000);
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u64 us = Common::Divide128On32(temporal, static_cast<u32>(Hardware::BASE_CLOCK_RATE)).first;
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2020-03-28 14:23:28 -05:00
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return std::chrono::microseconds(us);
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}
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2019-02-12 11:32:15 -06:00
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} // namespace Core::Timing
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