84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
// Module: Log4CPLUS
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// File: sleep.cxx
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// Created: 5/2003
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// Author: Tad E. Smith
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//
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//
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// Copyright 2003-2009 Tad E. Smith
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <log4cplus/helpers/sleep.h>
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#include <log4cplus/helpers/timehelper.h>
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#ifdef LOG4CPLUS_HAVE_ERRNO_H
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#include <errno.h>
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#endif
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using namespace log4cplus;
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///////////////////////////////////////////////////////////////////////////////
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// public methods
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///////////////////////////////////////////////////////////////////////////////
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int const MILLIS_TO_NANOS = 1000000;
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int const SEC_TO_MILLIS = 1000;
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void
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log4cplus::helpers::sleep(unsigned long secs, unsigned long nanosecs)
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{
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#if defined(_WIN32)
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DWORD const MAX_SLEEP_SECONDS = 4294966; // (2**32-2)/1000
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DWORD nano_millis = nanosecs / static_cast<unsigned long>(MILLIS_TO_NANOS);
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if (secs <= MAX_SLEEP_SECONDS) {
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Sleep((secs * SEC_TO_MILLIS) + nano_millis);
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return;
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}
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DWORD no_of_max_sleeps = secs / MAX_SLEEP_SECONDS;
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for(DWORD i = 0; i < no_of_max_sleeps; i++) {
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Sleep(MAX_SLEEP_SECONDS * SEC_TO_MILLIS);
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}
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Sleep((secs % MAX_SLEEP_SECONDS) * SEC_TO_MILLIS + nano_millis);
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#else
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timespec sleep_time = { secs, nanosecs };
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timespec remain;
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while (nanosleep(&sleep_time, &remain)) {
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if (errno == EINTR) {
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sleep_time.tv_sec = remain.tv_sec;
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sleep_time.tv_nsec = remain.tv_nsec;
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continue;
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}
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else {
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return;
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}
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}
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#endif
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}
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void
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log4cplus::helpers::sleepmillis(unsigned long millis)
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{
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unsigned long secs = millis / SEC_TO_MILLIS;
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unsigned long nanosecs = (millis % SEC_TO_MILLIS) * MILLIS_TO_NANOS;
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sleep(secs, nanosecs);
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}
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