1// -*- C++ -*- 2//===---------------------------- ctime -----------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CTIME 11#define _LIBCPP_CTIME 12 13/* 14 ctime synopsis 15 16Macros: 17 18 NULL 19 CLOCKS_PER_SEC 20 TIME_UTC // C++17 21 22namespace std 23{ 24 25Types: 26 27 clock_t 28 size_t 29 time_t 30 tm 31 timespec // C++17 32 33clock_t clock(); 34double difftime(time_t time1, time_t time0); 35time_t mktime(tm* timeptr); 36time_t time(time_t* timer); 37char* asctime(const tm* timeptr); 38char* ctime(const time_t* timer); 39tm* gmtime(const time_t* timer); 40tm* localtime(const time_t* timer); 41size_t strftime(char* restrict s, size_t maxsize, const char* restrict format, 42 const tm* restrict timeptr); 43int timespec_get( struct timespec *ts, int base); // C++17 44} // std 45 46*/ 47 48#include <__config> 49#include <time.h> 50 51#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 52#pragma GCC system_header 53#endif 54 55// FIXME: 56// Apple SDKs don't define ::timespec_get unconditionally in C++ mode. This 57// should be fixed in future SDKs, but for the time being we need to avoid 58// trying to use that declaration when the SDK doesn't provide it. Note that 59// we're detecting this here instead of in <__config> because we can't include 60// system headers from <__config>, since it leads to circular module dependencies. 61// This is also meant to be a very temporary workaround until the SDKs are fixed. 62#if defined(__APPLE__) 63# include <sys/cdefs.h> 64# if defined(_LIBCPP_HAS_TIMESPEC_GET) && (__DARWIN_C_LEVEL < __DARWIN_C_FULL) 65# define _LIBCPP_HAS_TIMESPEC_GET_NOT_ACTUALLY_PROVIDED 66# endif 67#endif 68 69_LIBCPP_BEGIN_NAMESPACE_STD 70 71using ::clock_t; 72using ::size_t; 73using ::time_t; 74using ::tm; 75#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_TIMESPEC_GET) 76using ::timespec; 77#endif 78using ::clock; 79using ::difftime; 80using ::mktime; 81using ::time; 82#ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 83using ::asctime; 84using ::ctime; 85using ::gmtime; 86using ::localtime; 87#endif 88using ::strftime; 89#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_TIMESPEC_GET) && !defined(_LIBCPP_HAS_TIMESPEC_GET_NOT_ACTUALLY_PROVIDED) 90using ::timespec_get; 91#endif 92 93_LIBCPP_END_NAMESPACE_STD 94 95#endif // _LIBCPP_CTIME 96