122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
/**
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* @file lltiming_test.cpp
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* @date 2006-07-23
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* @brief Tests the timers.
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*
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* $LicenseInfo:firstyear=2006&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "../llframetimer.h"
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#include "../llsd.h"
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#include "../test/lltut.h"
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namespace tut
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{
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struct frametimer_test
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{
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frametimer_test()
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{
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LLFrameTimer::updateFrameTime();
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}
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};
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typedef test_group<frametimer_test> frametimer_group_t;
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typedef frametimer_group_t::object frametimer_object_t;
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tut::frametimer_group_t frametimer_instance("LLFrameTimer");
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template<> template<>
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void frametimer_object_t::test<1>()
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{
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F64 seconds_since_epoch = LLFrameTimer::getTotalSeconds();
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LLFrameTimer timer;
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timer.setExpiryAt(seconds_since_epoch);
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F64 expires_at = timer.expiresAt();
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ensure_distance(
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"set expiry matches get expiry",
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expires_at,
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seconds_since_epoch,
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0.001);
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}
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template<> template<>
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void frametimer_object_t::test<2>()
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{
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F64 seconds_since_epoch = LLFrameTimer::getTotalSeconds();
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seconds_since_epoch += 10.0;
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LLFrameTimer timer;
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timer.setExpiryAt(seconds_since_epoch);
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F64 expires_at = timer.expiresAt();
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ensure_distance(
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"set expiry matches get expiry 1",
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expires_at,
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seconds_since_epoch,
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0.001);
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seconds_since_epoch += 10.0;
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timer.setExpiryAt(seconds_since_epoch);
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expires_at = timer.expiresAt();
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ensure_distance(
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"set expiry matches get expiry 2",
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expires_at,
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seconds_since_epoch,
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0.001);
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}
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template<> template<>
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void frametimer_object_t::test<3>()
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{
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clock_t t1 = clock();
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ms_sleep(200);
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clock_t t2 = clock();
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clock_t elapsed = t2 - t1 + 1;
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std::cout << "Note: using clock(), ms_sleep() actually took " << (long)elapsed << "ms" << std::endl;
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F64 seconds_since_epoch = LLFrameTimer::getTotalSeconds();
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seconds_since_epoch += 2.0;
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LLFrameTimer timer;
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timer.setExpiryAt(seconds_since_epoch);
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/*
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* Note that the ms_sleep(200) below is only guaranteed to return
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* in 200ms _or_more_, so it should be true that by the 10th
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* iteration we've gotten to the 2 seconds requested above
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* and the timer should expire, but it can expire in fewer iterations
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* if one or more of the ms_sleep calls takes longer.
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* (as it did when we moved to Mac OS X 10.10)
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*/
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int iterations_until_expiration = 0;
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while ( !timer.hasExpired() )
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{
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ms_sleep(200);
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LLFrameTimer::updateFrameTime();
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iterations_until_expiration++;
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}
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ensure("timer took too long to expire", iterations_until_expiration <= 10);
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}
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/*
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template<> template<>
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void frametimer_object_t::test<4>()
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{
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}
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*/
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}
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