mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#pragma once
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#include "td/utils/int_types.h"
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namespace td {
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struct Clocks {
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static double monotonic();
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static double system();
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static int tz_offset();
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#if defined(__i386__)
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static __inline__ td::uint64 rdtsc(void) {
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unsigned long long int x;
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__asm__ volatile("rdtsc" : "=A"(x));
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return x;
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}
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static constexpr td::uint64 rdtsc_frequency(void) {
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return 2000'000'000;
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}
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static constexpr double ticks_per_second() {
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return 2e9;
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}
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static constexpr double inv_ticks_per_second() {
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return 0.5e-9;
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}
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#elif defined(__x86_64__)
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static __inline__ td::uint64 rdtsc(void) {
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unsigned hi, lo;
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__asm__ __volatile__("rdtsc" : "=a"(lo), "=d"(hi));
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return ((unsigned long long)lo) | (((unsigned long long)hi) << 32);
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}
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static constexpr td::uint64 rdtsc_frequency(void) {
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return 2000'000'000;
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}
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static constexpr double ticks_per_second() {
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return 2e9;
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}
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static constexpr double inv_ticks_per_second() {
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return 0.5e-9;
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}
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#elif defined(__aarch64__)
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static __inline__ td::uint64 rdtsc(void) {
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unsigned long long val;
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asm volatile("mrs %0, cntvct_el0" : "=r"(val));
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return val;
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}
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static __inline__ td::uint64 rdtsc_frequency(void) {
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unsigned long long val;
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asm volatile("mrs %0, cntfrq_el0" : "=r"(val));
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return val;
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}
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static double ticks_per_second() {
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return static_cast<double>(rdtsc_frequency());
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}
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static double inv_ticks_per_second() {
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return 1.0 / static_cast<double>(rdtsc_frequency());
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}
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#endif
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};
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} // namespace td
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