| 1 | //===-- Implementation of timespec_get for Linux --------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/time/timespec_get.h" |
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| 10 | #include "hdr/time_macros.h" |
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| 11 | #include "src/__support/common.h" |
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| 12 | #include "src/__support/libc_errno.h" |
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| 13 | #include "src/__support/macros/config.h" |
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| 14 | #include "src/__support/time/clock_gettime.h" |
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| 15 | |
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| 16 | namespace LIBC_NAMESPACE_DECL { |
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| 17 | |
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| 18 | LLVM_LIBC_FUNCTION(int, timespec_get, (struct timespec * ts, int base)) { |
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| 19 | clockid_t clockid; |
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| 20 | switch (base) { |
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| 21 | case TIME_UTC: |
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| 22 | clockid = CLOCK_REALTIME; |
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| 23 | break; |
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| 24 | case TIME_MONOTONIC: |
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| 25 | clockid = CLOCK_MONOTONIC; |
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| 26 | break; |
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| 27 | case TIME_ACTIVE: |
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| 28 | clockid = CLOCK_PROCESS_CPUTIME_ID; |
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| 29 | break; |
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| 30 | case TIME_THREAD_ACTIVE: |
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| 31 | clockid = CLOCK_THREAD_CPUTIME_ID; |
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| 32 | break; |
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| 33 | default: |
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| 34 | return 0; |
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| 35 | } |
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| 36 | |
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| 37 | auto result = internal::clock_gettime(clockid, ts); |
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| 38 | if (!result.has_value()) { |
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| 39 | libc_errno = result.error(); |
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| 40 | return 0; |
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| 41 | } |
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| 42 | return base; |
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| 43 | } |
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| 44 | |
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| 45 | } // namespace LIBC_NAMESPACE_DECL |
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| 46 | |
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