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118 lines
3.9 KiB
118 lines
3.9 KiB
/*
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Copyright 2005-2013 Intel Corporation. All Rights Reserved.
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This file is part of Threading Building Blocks.
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Threading Building Blocks is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation.
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Threading Building Blocks is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of 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 Threading Building Blocks; 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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As a special exception, you may use this file as part of a free software
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library without restriction. Specifically, if other files instantiate
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templates or use macros or inline functions from this file, or you compile
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this file and link it with other files to produce an executable, this
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file does not by itself cause the resulting executable to be covered by
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the GNU General Public License. This exception does not however
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invalidate any other reasons why the executable file might be covered by
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the GNU General Public License.
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*/
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#include "harness_defs.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cassert>
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#include <utility>
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#include "tbb/task.h"
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#include "tbb/task_scheduler_init.h"
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#include "tbb/tick_count.h"
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#include "tbb/parallel_for.h"
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#include "tbb/blocked_range.h"
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#include "tbb/mutex.h"
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#include "tbb/spin_mutex.h"
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#include "tbb/queuing_mutex.h"
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#include "harness.h"
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using namespace std;
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using namespace tbb;
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///////////////////// Parallel methods ////////////////////////
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// *** Serial shared by mutexes *** //
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int SharedI = 1, SharedN;
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template<typename M>
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class SharedSerialFibBody: NoAssign {
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M &mutex;
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public:
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SharedSerialFibBody( M &m ) : mutex( m ) {}
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//! main loop
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void operator()( const blocked_range<int>& /*range*/ ) const {
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for(;;) {
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typename M::scoped_lock lock( mutex );
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if(SharedI >= SharedN) break;
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volatile double sum = 7.3;
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sum *= 11.17;
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++SharedI;
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}
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}
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};
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//! Root function
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template<class M>
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void SharedSerialFib(int n)
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{
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SharedI = 1;
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SharedN = n;
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M mutex;
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parallel_for( blocked_range<int>(0,4,1), SharedSerialFibBody<M>( mutex ) );
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}
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/////////////////////////// Main ////////////////////////////////////////////////////
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double Tsum = 0; int Tnum = 0;
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typedef void (*MeasureFunc)(int);
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//! Measure ticks count in loop [2..n]
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void Measure(const char *name, MeasureFunc func, int n)
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{
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tick_count t0;
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tick_count::interval_t T;
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REMARK("%s",name);
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t0 = tick_count::now();
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for(int number = 2; number <= n; number++)
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func(number);
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T = tick_count::now() - t0;
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double avg = Tnum? Tsum/Tnum : 1;
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if (avg == 0.0) avg = 1;
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if(avg * 100 < T.seconds()) {
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REPORT("Warning: halting detected (%g sec, av: %g)\n", T.seconds(), avg);
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ASSERT(avg * 1000 > T.seconds(), "Too long halting period");
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} else {
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Tsum += T.seconds(); Tnum++;
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}
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REMARK("\t- in %f msec\n", T.seconds()*1000);
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}
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int TestMain () {
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MinThread = max(2, MinThread);
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int NumbersCount = 100;
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short recycle = 100;
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do {
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for(int threads = MinThread; threads <= MaxThread; threads++) {
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task_scheduler_init scheduler_init(threads);
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REMARK("Threads number is %d\t", threads);
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Measure("Shared serial (wrapper mutex)\t", SharedSerialFib<mutex>, NumbersCount);
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//sum = Measure("Shared serial (spin_mutex)", SharedSerialFib<tbb::spin_mutex>, NumbersCount);
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//sum = Measure("Shared serial (queuing_mutex)", SharedSerialFib<tbb::queuing_mutex>, NumbersCount);
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}
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} while(--recycle);
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return Harness::Done;
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}
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