64 lines
2 KiB
C++
64 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"
|
|
|
|
namespace CoreTiming {
|
|
|
|
constexpr u64 MAX_VALUE_TO_MULTIPLY = std::numeric_limits<s64>::max() / BASE_CLOCK_RATE;
|
|
|
|
s64 usToCycles(s64 us) {
|
|
if (us / 1000000 > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (us > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * (us / 1000000);
|
|
}
|
|
return (BASE_CLOCK_RATE * us) / 1000000;
|
|
}
|
|
|
|
s64 usToCycles(u64 us) {
|
|
if (us / 1000000 > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (us > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * static_cast<s64>(us / 1000000);
|
|
}
|
|
return (BASE_CLOCK_RATE * static_cast<s64>(us)) / 1000000;
|
|
}
|
|
|
|
s64 nsToCycles(s64 ns) {
|
|
if (ns / 1000000000 > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (ns > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * (ns / 1000000000);
|
|
}
|
|
return (BASE_CLOCK_RATE * ns) / 1000000000;
|
|
}
|
|
|
|
s64 nsToCycles(u64 ns) {
|
|
if (ns / 1000000000 > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_ERROR(Core_Timing, "Integer overflow, use max value");
|
|
return std::numeric_limits<s64>::max();
|
|
}
|
|
if (ns > MAX_VALUE_TO_MULTIPLY) {
|
|
LOG_DEBUG(Core_Timing, "Time very big, do rounding");
|
|
return BASE_CLOCK_RATE * (static_cast<s64>(ns) / 1000000000);
|
|
}
|
|
return (BASE_CLOCK_RATE * static_cast<s64>(ns)) / 1000000000;
|
|
}
|
|
|
|
} // namespace CoreTiming
|