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/*
* Copyright 2016 Garrett D'Amore <garrett@damore.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/*
* The following adjustments to the platform may be defined. These can
* be defined in either platform/config.h or loaded in via external
* defines using cmake.
*
* #define NNG_USE_GETTIMEOFDAY
* This macro is defined if you lack a working clock_gettime,
* nanosleep, or pthread_condattr_setclock. In this case the
* library uses the system clock for relative sleeps, timers, etc.
* This can be dangerous if the system clock is changed, so only
* use this if you have no other choice. If it appears that
* the system lacks clock_gettime, then it will choose this automatically.
* This value may be ignored on platforms that don't use POSIX clocks.
*
* #define NNG_USE_CLOCKID
* This macro may be defined to a different clock id (see
* clock_gettime()). By default we use CLOCK_MONOTONIC if it exists,
* or CLOCK_REALTIME otherwise. This is ignored if NNG_USE_GETTIMEOFDAY
* is defined. Platforms that don't use POSIX clocks will probably
* ignore any setting here.
*
* #define NNG_HAVE_BACKTRACE
* If your system has a working backtrace(), and backtrace_symbols(),
* along with <execinfo.h>, you can define this to get richer backtrace
* information for debugging.
*/
#include <time.h>
#ifndef CLOCK_REALTIME
#define NNG_USE_GETTIMEOFDAY
#elif !defined(NNG_USE_CLOCKID)
#ifdef CLOCK_MONOTONIC
#define NNG_USE_CLOCKID CLOCK_MONOTONIC
#else
#define NNG_USE_CLOCKID CLOCK_REALTIME
#endif
#endif /* CLOCK_REALTIME */
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