93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
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Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef NDBSLEEP_H
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#define NDBSLEEP_H
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#include <ndb_global.h>
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static inline void NdbSleep_MilliSleep(int milliseconds);
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static inline
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void NdbSleep_MicroSleep(int microseconds)
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{
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assert(0 < microseconds);
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#ifdef _WIN32
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// Waitable timer use 100ns time unit, negative for relative time periods
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LARGE_INTEGER liDueTime;
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liDueTime.QuadPart = -10LL * microseconds;
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HANDLE hTimer = CreateWaitableTimer(NULL, TRUE, NULL);
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if (NULL == hTimer ||
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!SetWaitableTimer(hTimer, &liDueTime, 0, NULL, NULL, 0) ||
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WaitForSingleObject(hTimer, INFINITE) != WAIT_OBJECT_0)
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{
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#ifndef NDEBUG
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// Error code for crash analysis
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DWORD winerr = GetLastError();
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#endif
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assert(false);
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// Fallback to millisleep in release
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NdbSleep_MilliSleep(1 + (microseconds - 1) / 1000);
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}
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if (NULL != hTimer)
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{
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CloseHandle(hTimer);
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}
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#elif defined(HAVE_NANOSLEEP)
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struct timespec t;
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t.tv_sec = microseconds / 1000000;
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t.tv_nsec = 1000 * (microseconds % 1000000);
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while (nanosleep(&t, &t) == -1)
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{
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if (errno != EINTR)
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{
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assert(false);
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// Fallback to millisleep in release
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NdbSleep_MilliSleep(1 + (microseconds - 1) / 1000);
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return ;
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}
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}
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#else
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// Fallback to millisleep
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NdbSleep_MilliSleep(1 + (microseconds - 1) / 1000);
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#endif
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}
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static inline
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void NdbSleep_MilliSleep(int milliseconds)
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{
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#ifdef _WIN32
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Sleep(milliseconds);
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#elif defined(HAVE_SELECT)
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struct timeval t;
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t.tv_sec = milliseconds / 1000L;
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t.tv_usec = (milliseconds % 1000L) * 1000L;
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select(0,0,0,0,&t);
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#else
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#error No suitable function found to implement millisecond sleep.
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#endif
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}
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static inline
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void NdbSleep_SecSleep(int seconds)
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{
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NdbSleep_MilliSleep(seconds*1000);
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}
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#endif
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