1 /*===---- time.h - OpenMP time header wrapper ------------------------ c ---=== 2 * 3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 * See https://llvm.org/LICENSE.txt for license information. 5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 * 7 *===-----------------------------------------------------------------------=== 8 */ 9 10 #ifndef __CLANG_OPENMP_TIME_H__ 11 #define __CLANG_OPENMP_TIME_H__ 12 13 #ifndef _OPENMP 14 #error "This file is for OpenMP compilation only." 15 #endif 16 17 #if defined(__cplusplus) 18 #define __DEVICE__ static constexpr __attribute__((always_inline, nothrow)) 19 #else 20 #define __DEVICE__ static __attribute__((always_inline, nothrow)) 21 #endif 22 23 #include_next <time.h> 24 25 #pragma omp begin declare variant match( \ 26 device = {arch(nvptx, nvptx64)}, implementation = {extension(match_any)}) 27 28 __DEVICE__ clock_t clock() { return __nvvm_read_ptx_sreg_clock(); } 29 30 #pragma omp end declare variant 31 32 #endif 33