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https://github.com/facebook/rocksdb.git
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af7ae912e2
Summary:
There are some time-related POSIX APIs that are not available on Windows
(e.g. `localtime_r`), which we have worked around by providing our own
implementations in `port/sys_time.h`. This workaround actually relies on
some ambiguity: on Windows, a call to `localtime_r` calls
`ROCKSDB_NAMESPACE::port::localtime_r` (which is pulled into
`ROCKSDB_NAMESPACE` by a using-declaration), while on other platforms
it calls the global `localtime_r`. This works fine as long as there is only one
candidate function; however, it breaks down when there is more than one
`localtime_r` visible in a scope.
The patch fixes this by introducing `ROCKSDB_NAMESPACE::port::{TimeVal, GetTimeOfDay, LocalTimeR}`
to eliminate any ambiguity.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10045
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D36639372
Pulled By: ltamasi
fbshipit-source-id: fc13dbfa421b7c8918111a6d9e24ce77e91a7c50
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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// This file is a portable substitute for sys/time.h which does not exist on
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// Windows
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#pragma once
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#include "rocksdb/rocksdb_namespace.h"
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#if defined(OS_WIN) && (defined(_MSC_VER) || defined(__MINGW32__))
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#include <time.h>
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namespace ROCKSDB_NAMESPACE {
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namespace port {
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struct TimeVal {
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long tv_sec;
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long tv_usec;
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};
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void GetTimeOfDay(TimeVal* tv, struct timezone* tz);
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inline struct tm* LocalTimeR(const time_t* timep, struct tm* result) {
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errno_t ret = localtime_s(result, timep);
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return (ret == 0) ? result : NULL;
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}
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} // namespace port
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} // namespace ROCKSDB_NAMESPACE
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#else
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#include <time.h>
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#include <sys/time.h>
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namespace ROCKSDB_NAMESPACE {
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namespace port {
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using TimeVal = struct timeval;
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inline void GetTimeOfDay(TimeVal* tv, struct timezone* tz) {
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gettimeofday(tv, tz);
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}
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inline struct tm* LocalTimeR(const time_t* timep, struct tm* result) {
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return localtime_r(timep, result);
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}
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} // namespace port
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} // namespace ROCKSDB_NAMESPACE
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#endif
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