1 | //===-- Implementation of timespec_get for gpu ----------------------------===// |
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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 | |
15 | namespace LIBC_NAMESPACE_DECL { |
16 | |
17 | LLVM_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 |