1//===-- Implementation of timespec_get for gpu ----------------------------===//
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#include "src/time/timespec_get.h"
10#include "hdr/time_macros.h"
11#include "src/__support/common.h"
12#include "src/__support/macros/config.h"
13#include "src/__support/time/gpu/time_utils.h"
14
15namespace LIBC_NAMESPACE_DECL {
16
17LLVM_LIBC_FUNCTION(int, timespec_get, (struct timespec * ts, int base)) {
18 if (base != TIME_MONOTONIC || !ts)
19 return 0;
20
21 uint64_t ns_per_tick = TICKS_PER_SEC / GPU_CLOCKS_PER_SEC;
22 uint64_t ticks = gpu::fixed_frequency_clock();
23
24 ts->tv_nsec = (ticks * ns_per_tick) % TICKS_PER_SEC;
25 ts->tv_sec = (ticks * ns_per_tick) / TICKS_PER_SEC;
26
27 return base;
28}
29
30} // namespace LIBC_NAMESPACE_DECL
31

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source code of libc/src/time/gpu/timespec_get.cpp