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/* -------------------------------------------------------------------------- *
* Simbody(tm): SimTKcommon *
* -------------------------------------------------------------------------- *
* This is part of the SimTK biosimulation toolkit originating from *
* Simbios, the NIH National Center for Physics-Based Simulation of *
* Biological Structures at Stanford, funded under the NIH Roadmap for *
* Medical Research, grant U54 GM072970. See https://simtk.org/home/simbody. *
* *
* Portions copyright (c) 2008-12 Stanford University and the Authors. *
* Authors: Peter Eastman *
* Contributors: *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); you may *
* not use this file except in compliance with the License. You may obtain a *
* copy of the License at http://www.apache.org/licenses/LICENSE-2.0. *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* -------------------------------------------------------------------------- */
#include "SimTKcommon.h"
#include <iostream>
#define ASSERT(cond) {SimTK_ASSERT_ALWAYS(cond, "Assertion failed");}
using std::cout;
using std::endl;
using namespace SimTK;
using namespace std;
class SetFlagTask : public Parallel2DExecutor::Task {
public:
SetFlagTask(Array_<Array_<int> >& flags, int& count) : flags(flags), count(count) {
}
void execute(int i, int j) override {
flags[i][j]++;
localCount++;
}
void initialize() override {
localCount = 0;
}
void finish() override {
count += localCount;
}
private:
Array_<Array_<int> >& flags;
int& count;
static thread_local int localCount;
};
/*static*/ thread_local int SetFlagTask::localCount = 0;
void clearFlags(Array_<Array_<int> >& flags) {
int numFlags = flags.size();
for (int i = 0; i < numFlags; ++i) {
flags[i].resize(numFlags);
for (int j = 0; j < numFlags; ++j)
flags[i][j] = 0;
}
}
void testParallelExecution() {
int numFlags = 100;
Parallel2DExecutor executor(numFlags);
Array_<Array_<int> > flags(numFlags);
clearFlags(flags);
for (int iter = 0; iter < 100; ++iter) {
int count = 0;
SetFlagTask task(flags, count);
executor.execute(task, Parallel2DExecutor::FullMatrix);
ASSERT(count == numFlags*numFlags);
for (int i = 0; i < numFlags; ++i)
for (int j = 0; j < numFlags; ++j)
ASSERT(flags[i][j] == iter+1);
}
clearFlags(flags);
for (int iter = 0; iter < 100; ++iter) {
int count = 0;
SetFlagTask task(flags, count);
executor.execute(task, Parallel2DExecutor::HalfMatrix);
ASSERT(count == numFlags*(numFlags-1)/2);
for (int i = 0; i < numFlags; ++i)
for (int j = 0; j < numFlags; ++j)
ASSERT(flags[i][j] == (j < i ? iter+1 : 0));
}
clearFlags(flags);
for (int iter = 0; iter < 100; ++iter) {
int count = 0;
SetFlagTask task(flags, count);
executor.execute(task, Parallel2DExecutor::HalfPlusDiagonal);
ASSERT(count == numFlags*(numFlags+1)/2);
for (int i = 0; i < numFlags; ++i)
for (int j = 0; j < numFlags; ++j)
ASSERT(flags[i][j] == (j <= i ? iter+1 : 0));
}
}
void testSingleThreadedExecution() {
int numFlags = 100;
Parallel2DExecutor executor(numFlags, 1);
Array_<Array_<int> > flags(numFlags);
int count = 0;
SetFlagTask task(flags, count);
clearFlags(flags);
executor.execute(task, Parallel2DExecutor::FullMatrix);
ASSERT(count == numFlags*numFlags);
for (int i = 0; i < numFlags; ++i)
for (int j = 0; j < numFlags; ++j)
ASSERT(flags[i][j] == 1);
count = 0;
clearFlags(flags);
executor.execute(task, Parallel2DExecutor::HalfMatrix);
ASSERT(count == numFlags*(numFlags-1)/2);
for (int i = 0; i < numFlags; ++i)
for (int j = 0; j < numFlags; ++j)
ASSERT(flags[i][j] == (j < i ? 1 : 0));
count = 0;
clearFlags(flags);
executor.execute(task, Parallel2DExecutor::HalfPlusDiagonal);
ASSERT(count == numFlags*(numFlags+1)/2);
for (int i = 0; i < numFlags; ++i)
for (int j = 0; j < numFlags; ++j)
ASSERT(flags[i][j] == (j <= i ? 1 : 0));
}
int main() {
try {
testParallelExecution();
testSingleThreadedExecution();
} catch(const std::exception& e) {
cout << "exception: " << e.what() << endl;
return 1;
}
cout << "Done" << endl;
return 0;
}
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