mirror of
https://github.com/yuzu-emu/yuzu-mainline.git
synced 2024-12-27 09:25:26 +00:00
58 lines
2 KiB
C++
58 lines
2 KiB
C++
// Copyright 2008 Dolphin Emulator Project / 2017 Citra Emulator Project
|
|
// Licensed under GPLv2+
|
|
// Refer to the license.txt file included.
|
|
|
|
#include "core/core_timing_util.h"
|
|
|
|
#include <cinttypes>
|
|
#include <limits>
|
|
#include "common/logging/log.h"
|
|
#include "common/uint128.h"
|
|
|
|
namespace Core::Timing {
|
|
|
|
constexpr u64 MAX_VALUE_TO_MULTIPLY = std::numeric_limits<s64>::max() / BASE_CLOCK_RATE;
|
|
|
|
s64 msToCycles(std::chrono::milliseconds ms) {
|
|
if (static_cast<u64>(ms.count() / 1000) > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (static_cast<u64>(ms.count()) > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * (ms.count() / 1000);
|
|
}
|
|
return (BASE_CLOCK_RATE * ms.count()) / 1000;
|
|
}
|
|
|
|
s64 usToCycles(std::chrono::microseconds us) {
|
|
if (static_cast<u64>(us.count() / 1000000) > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (static_cast<u64>(us.count()) > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * (us.count() / 1000000);
|
|
}
|
|
return (BASE_CLOCK_RATE * us.count()) / 1000000;
|
|
}
|
|
|
|
s64 nsToCycles(std::chrono::nanoseconds ns) {
|
|
if (static_cast<u64>(ns.count() / 1000000000) > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (static_cast<u64>(ns.count()) > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * (ns.count() / 1000000000);
|
|
}
|
|
return (BASE_CLOCK_RATE * ns.count()) / 1000000000;
|
|
}
|
|
|
|
u64 CpuCyclesToClockCycles(u64 ticks) {
|
|
const u128 temporal = Common::Multiply64Into128(ticks, CNTFREQ);
|
|
return Common::Divide128On32(temporal, static_cast<u32>(BASE_CLOCK_RATE)).first;
|
|
}
|
|
|
|
} // namespace Core::Timing
|