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[Base] Fix Clock platform functions on POSIX.

This commit is contained in:
Joel Linn 2019-12-02 22:19:47 +01:00 committed by Triang3l
parent 8e83042bdf
commit f6e48d5386
1 changed files with 26 additions and 16 deletions
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40
src/xenia/base/clock_posix.cc
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@ -2,41 +2,51 @@
****************************************************************************** ******************************************************************************
* Xenia : Xbox 360 Emulator Research Project * * Xenia : Xbox 360 Emulator Research Project *
****************************************************************************** ******************************************************************************
* Copyright 2019 Ben Vanik. All rights reserved. * * Copyright 2021 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. * * Released under the BSD license - see LICENSE in the root for more details. *
****************************************************************************** ******************************************************************************
*/ */
#include "xenia/base/clock.h"
#include <sys/time.h> #include <sys/time.h>
#include <time.h>
#include "xenia/base/assert.h"
#include "xenia/base/clock.h"
namespace xe { namespace xe {
uint64_t Clock::host_tick_frequency_platform() { uint64_t Clock::host_tick_frequency_platform() {
timespec res; timespec res;
clock_getres(CLOCK_MONOTONIC_RAW, &res); int error = clock_getres(CLOCK_MONOTONIC_RAW, &res);
assert_zero(error);
assert_zero(res.tv_sec); // Sub second resolution is required.
return uint64_t(res.tv_sec) + uint64_t(res.tv_nsec) * 1000000000ull; // Convert nano seconds to hertz. Resolution is 1ns on most systems.
return 1000000000ull / res.tv_nsec;
} }
uint64_t Clock::host_tick_count_platform() { uint64_t Clock::host_tick_count_platform() {
timespec res; timespec tp;
clock_gettime(CLOCK_MONOTONIC_RAW, &res); int error = clock_gettime(CLOCK_MONOTONIC_RAW, &tp);
assert_zero(error);
return uint64_t(res.tv_sec) + uint64_t(res.tv_nsec) * 1000000000ull; return tp.tv_nsec + tp.tv_sec * 1000000000ull;
} }
uint64_t Clock::QueryHostSystemTime() { uint64_t Clock::QueryHostSystemTime() {
struct timeval tv; // https://docs.microsoft.com/en-us/windows/win32/sysinfo/converting-a-time-t-value-to-a-file-time
gettimeofday(&tv, NULL); constexpr uint64_t seconds_per_day = 3600 * 24;
// Don't forget the 89 leap days.
constexpr uint64_t seconds_1601_to_1970 =
((369 * 365 + 89) * seconds_per_day);
uint64_t ret = tv.tv_usec; timeval now;
ret /= 1000; // usec -> msec int error = gettimeofday(&now, nullptr);
assert_zero(error);
ret += (tv.tv_sec * 1000); // sec -> msec // NT systems use 100ns intervals.
return ret; return static_cast<uint64_t>(
(static_cast<int64_t>(now.tv_sec) + seconds_1601_to_1970) * 10000000ull +
now.tv_usec * 10);
} }
uint64_t Clock::QueryHostUptimeMillis() { uint64_t Clock::QueryHostUptimeMillis() {