49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2024
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/port/sleep.h"
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#include "td/utils/port/config.h"
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#if TD_PORT_WINDOWS
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#include "td/utils/port/Clocks.h"
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#endif
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#if TD_PORT_POSIX
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#if _POSIX_C_SOURCE >= 199309L
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#include <time.h>
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#else
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#include <unistd.h>
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#endif
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#endif
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namespace td {
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void usleep_for(int32 microseconds) {
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#if TD_PORT_WINDOWS
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if (microseconds < 2000) {
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auto end_time = Clocks::monotonic() + microseconds * 1e-6;
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do {
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SwitchToThread();
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} while (Clocks::monotonic() < end_time);
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} else {
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int32 milliseconds = microseconds / 1000 + (microseconds % 1000 ? 1 : 0);
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Sleep(milliseconds);
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}
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#else
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#if _POSIX_C_SOURCE >= 199309L
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timespec ts;
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ts.tv_sec = microseconds / 1000000;
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ts.tv_nsec = (microseconds % 1000000) * 1000;
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nanosleep(&ts, nullptr);
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#else
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usleep(microseconds);
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#endif
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#endif
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}
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} // namespace td
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