9783f28cbb
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.
This patch was generated with:
find libcxx/include libcxx/src -type f \
| grep -v 'module.modulemap.in' \
| grep -v 'CMakeLists.txt' \
| grep -v 'README.txt' \
| grep -v 'libcxx.imp' \
| grep -v '__config_site.in' \
| xargs clang-format -i
A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.
[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___SUPPORT_IBM_GETTOD_ZOS_H
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#define _LIBCPP___SUPPORT_IBM_GETTOD_ZOS_H
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#include <time.h>
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inline _LIBCPP_HIDE_FROM_ABI int gettimeofdayMonotonic(struct timespec64* Output) {
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// The POSIX gettimeofday() function is not available on z/OS. Therefore,
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// we will call stcke and other hardware instructions in implement equivalent.
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// Note that nanoseconds alone will overflow when reaching new epoch in 2042.
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struct _t {
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uint64_t Hi;
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uint64_t Lo;
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};
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struct _t Value = {0, 0};
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uint64_t CC = 0;
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asm(" stcke %0\n"
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" ipm %1\n"
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" srlg %1,%1,28\n"
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: "=m"(Value), "+r"(CC)::);
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if (CC != 0) {
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errno = EMVSTODNOTSET;
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return CC;
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}
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uint64_t us = (Value.Hi >> 4);
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uint64_t ns = ((Value.Hi & 0x0F) << 8) + (Value.Lo >> 56);
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ns = (ns * 1000) >> 12;
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us = us - 2208988800000000;
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register uint64_t DivPair0 asm("r0"); // dividend (upper half), remainder
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DivPair0 = 0;
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register uint64_t DivPair1 asm("r1"); // dividend (lower half), quotient
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DivPair1 = us;
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uint64_t Divisor = 1000000;
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asm(" dlgr %0,%2" : "+r"(DivPair0), "+r"(DivPair1) : "r"(Divisor) :);
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Output->tv_sec = DivPair1;
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Output->tv_nsec = DivPair0 * 1000 + ns;
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return 0;
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}
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#endif // _LIBCPP___SUPPORT_IBM_GETTOD_ZOS_H
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