1e6cf5d28SSchrodinger ZHU Yifan //===-- Linux implementation of the time function -------------------------===// 2e6cf5d28SSchrodinger ZHU Yifan // 3e6cf5d28SSchrodinger ZHU Yifan // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e6cf5d28SSchrodinger ZHU Yifan // See https://llvm.org/LICENSE.txt for license information. 5e6cf5d28SSchrodinger ZHU Yifan // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e6cf5d28SSchrodinger ZHU Yifan // 7e6cf5d28SSchrodinger ZHU Yifan //===----------------------------------------------------------------------===// 8e6cf5d28SSchrodinger ZHU Yifan 9*f9c2377fSMichael Jones #include "src/time/time_func.h" 10*f9c2377fSMichael Jones 11e6cf5d28SSchrodinger ZHU Yifan #include "hdr/time_macros.h" 12e6cf5d28SSchrodinger ZHU Yifan #include "src/__support/common.h" 13e6cf5d28SSchrodinger ZHU Yifan #include "src/__support/macros/config.h" 14e6cf5d28SSchrodinger ZHU Yifan #include "src/__support/time/clock_gettime.h" 15e6cf5d28SSchrodinger ZHU Yifan #include "src/errno/libc_errno.h" 16e6cf5d28SSchrodinger ZHU Yifan 17e6cf5d28SSchrodinger ZHU Yifan namespace LIBC_NAMESPACE_DECL { 18e6cf5d28SSchrodinger ZHU Yifan // avoid inconsitent clang-format behavior 19e6cf5d28SSchrodinger ZHU Yifan using time_ptr_t = time_t *; 20e6cf5d28SSchrodinger ZHU Yifan LLVM_LIBC_FUNCTION(time_t, time, (time_ptr_t tp)) { 21e6cf5d28SSchrodinger ZHU Yifan struct timespec ts; 22e6cf5d28SSchrodinger ZHU Yifan auto result = internal::clock_gettime(CLOCK_REALTIME, &ts); 23e6cf5d28SSchrodinger ZHU Yifan if (!result.has_value()) { 24e6cf5d28SSchrodinger ZHU Yifan libc_errno = result.error(); 25e6cf5d28SSchrodinger ZHU Yifan return -1; 26e6cf5d28SSchrodinger ZHU Yifan } 27e6cf5d28SSchrodinger ZHU Yifan 28e6cf5d28SSchrodinger ZHU Yifan if (tp != nullptr) 29e6cf5d28SSchrodinger ZHU Yifan *tp = time_t(ts.tv_sec); 30e6cf5d28SSchrodinger ZHU Yifan return time_t(ts.tv_sec); 31e6cf5d28SSchrodinger ZHU Yifan } 32e6cf5d28SSchrodinger ZHU Yifan 33e6cf5d28SSchrodinger ZHU Yifan } // namespace LIBC_NAMESPACE_DECL 34