mirror of
https://github.com/apple/swift.git
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c891f34b22
* Ensure clocks properly respect leeways and use raw time for calculations for continuous clocks * slurp up time calcualtions to inline forms * ensure the tolerance codepaths get tested as well * Use task local storage for task sources in leeway based calculations * use comparison assertions for leeway based calculations * Whitespace cleanup * Use the CLOCK_MONOTONIC value for linux to be compatible with linux scheduling for dispatch * remove incorrect paren in macro check for OpenBSD * Address feedback and remove stray ;
162 lines
4.9 KiB
C++
162 lines
4.9 KiB
C++
//===--- Clock.cpp - Time and clock resolution ----------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Runtime/Concurrency.h"
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#if __has_include(<time.h>)
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#define HAS_TIME 1
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#include <time.h>
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#endif
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#if defined(_WIN32)
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#define WIN32_LEAN_AND_MEAN
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#define NOMINMAX
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#include <Windows.h>
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#endif
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using namespace swift;
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SWIFT_EXPORT_FROM(swift_Concurrency)
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SWIFT_CC(swift)
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void swift_get_time(
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long long *seconds,
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long long *nanoseconds,
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swift_clock_id clock_id) {
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switch (clock_id) {
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case swift_clock_id_continuous: {
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#if defined(__linux__) && HAS_TIME
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struct timespec continuous;
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clock_gettime(CLOCK_BOOTTIME, &continuous);
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*seconds = continuous.tv_sec;
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*nanoseconds = continuous.tv_nsec;
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#elif defined(__APPLE__) && HAS_TIME
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struct timespec continuous;
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clock_gettime(CLOCK_MONOTONIC_RAW, &continuous);
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*seconds = continuous.tv_sec;
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*nanoseconds = continuous.tv_nsec;
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#elif defined(__OpenBSD__) && HAS_TIME
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struct timespec continuous;
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clock_gettime(CLOCK_MONOTONIC, &continuous);
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*seconds = continuous.tv_sec;
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*nanoseconds = continuous.tv_nsec;
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#elif defined(_WIN32)
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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*seconds = count.QuadPart / freq.QuadPart;
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if (freq.QuadPart < 1000000000) {
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*nanoseconds =
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((count.QuadPart % freq.QuadPart) * 1000000000) / freq.QuadPart;
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} else {
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*nanoseconds =
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(count.QuadPart % freq.QuadPart) * (1000000000.0 / freq.QuadPart);
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}
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#else
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#error Missing platform continuous time definition
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#endif
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return;
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}
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case swift_clock_id_suspending: {
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#if defined(__linux__) && HAS_TIME
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struct timespec suspending;
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clock_gettime(CLOCK_MONOTONIC, &suspending);
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*seconds = suspending.tv_sec;
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*nanoseconds = suspending.tv_nsec;
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#elif defined(__APPLE__) && HAS_TIME
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struct timespec suspending;
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clock_gettime(CLOCK_UPTIME_RAW, &suspending);
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*seconds = suspending.tv_sec;
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*nanoseconds = suspending.tv_nsec;
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#elif defined(__OpenBSD__) && HAS_TIME
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struct timespec suspending;
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clock_gettime(CLOCK_UPTIME, &suspending);
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*seconds = suspending.tv_sec;
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*nanoseconds = suspending.tv_nsec;
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#elif defined(_WIN32)
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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*seconds = count.QuadPart / freq.QuadPart;
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if (freq.QuadPart < 1000000000) {
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*nanoseconds =
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((count.QuadPart % freq.QuadPart) * 1000000000) / freq.QuadPart;
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} else {
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*nanoseconds =
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(count.QuadPart % freq.QuadPart) * (1000000000.0 / freq.QuadPart);
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}
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#else
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#error Missing platform suspending time definition
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#endif
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return;
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}
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}
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abort(); // Invalid clock_id
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}
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SWIFT_EXPORT_FROM(swift_Concurrency)
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SWIFT_CC(swift)
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void swift_get_clock_res(
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long long *seconds,
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long long *nanoseconds,
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swift_clock_id clock_id) {
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switch (clock_id) {
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case swift_clock_id_continuous: {
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#if defined(__linux__) && HAS_TIME
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struct timespec continuous;
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clock_getres(CLOCK_BOOTTIME, &continuous);
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*seconds = continuous.tv_sec;
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*nanoseconds = continuous.tv_nsec;
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#elif defined(__APPLE__) && HAS_TIME
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struct timespec continuous;
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clock_getres(CLOCK_MONOTONIC_RAW, &continuous);
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*seconds = continuous.tv_sec;
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*nanoseconds = continuous.tv_nsec;
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#elif defined(__OpenBSD__) && HAS_TIME
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struct timespec continuous;
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clock_getres(CLOCK_MONOTONIC, &continuous);
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*seconds = continuous.tv_sec;
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*nanoseconds = continuous.tv_nsec;
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#elif defined(_WIN32)
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*seconds = 0;
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*nanoseconds = 1000;
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#else
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#error Missing platform continuous time definition
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#endif
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return;
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}
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case swift_clock_id_suspending: {
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struct timespec suspending;
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#if defined(__linux__) && HAS_TIME
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clock_getres(CLOCK_MONOTONIC_RAW, &suspending);
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*seconds = suspending.tv_sec;
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*nanoseconds = suspending.tv_nsec;
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#elif defined(__APPLE__) && HAS_TIME
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clock_getres(CLOCK_UPTIME_RAW, &suspending);
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*seconds = suspending.tv_sec;
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*nanoseconds = suspending.tv_nsec;
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#elif defined(__OpenBSD__) && HAS_TIME
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clock_getres(CLOCK_UPTIME, &suspending);
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*seconds = suspending.tv_sec;
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*nanoseconds = suspending.tv_nsec;
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#elif defined(_WIN32)
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*seconds = 0;
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*nanoseconds = 1000;
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#else
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#error Missing platform suspending time definition
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#endif
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return;
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}
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}
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abort(); // Invalid clock_id
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}
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