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#include <aocommon/barrier.h>
#include <aocommon/parallelfor.h>
#include <iostream>
#include <cmath>
#include <mutex>
#include <unistd.h> // for sleep
#include <boost/test/unit_test.hpp>
using namespace aocommon;
BOOST_AUTO_TEST_SUITE(parallelfor)
void func() {}
BOOST_AUTO_TEST_CASE(barrier) {
BOOST_CHECK_NO_THROW(Barrier b(1, func); b.wait();
Barrier c(2, func); std::thread t([&]() { c.wait(); });
c.wait(); t.join(););
}
BOOST_AUTO_TEST_CASE(unused) { BOOST_CHECK_NO_THROW(ParallelFor<size_t>(4);); }
BOOST_AUTO_TEST_CASE(single_thread) {
ParallelFor<size_t> loop(1);
std::vector<size_t> counts(10, 0);
loop.Run(0, 10, [&](size_t iter) { counts[iter]++; });
const std::vector<size_t> ref(10, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
}
BOOST_AUTO_TEST_CASE(parallel_with_thread_id) {
ParallelFor<size_t> loop(4);
std::mutex mutex;
std::vector<size_t> counts(10, 0);
loop.Run(0, 10, [&](size_t iter, size_t thread_id) {
std::unique_lock<std::mutex> lock(mutex);
BOOST_CHECK_LT(thread_id, 4);
counts[iter]++;
});
const std::vector<size_t> ref(10, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
}
BOOST_AUTO_TEST_CASE(parallel_without_thread_id) {
ParallelFor<size_t> loop(4);
std::mutex mutex;
std::vector<size_t> counts(10, 0);
loop.Run(0, 10, [&](size_t iter) {
std::unique_lock<std::mutex> lock(mutex);
counts[iter]++;
});
const std::vector<size_t> ref(10, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
}
BOOST_AUTO_TEST_CASE(reuse_with_thread_id) {
std::vector<size_t> counts(20, 0);
std::mutex mutex;
ParallelFor<size_t> loop(4);
loop.Run(0, 10, [&](size_t iter, size_t thread_id) {
std::unique_lock<std::mutex> lock(mutex);
BOOST_CHECK_LT(thread_id, 4);
counts[iter]++;
});
std::vector<size_t> ref(20, 0);
std::fill(ref.begin(), ref.begin() + 10, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
loop.Run(10, 20, [&](size_t iter, size_t thread_id) {
std::unique_lock<std::mutex> lock(mutex);
BOOST_CHECK_LT(thread_id, 4);
counts[iter]++;
});
ref = std::vector<size_t>(20, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
}
BOOST_AUTO_TEST_CASE(reuse_without_thread_id) {
std::vector<size_t> counts(20, 0);
std::mutex mutex;
ParallelFor<size_t> loop(4);
loop.Run(0, 10, [&](size_t iter) {
std::unique_lock<std::mutex> lock(mutex);
counts[iter]++;
});
std::vector<size_t> ref(20, 0);
std::fill(ref.begin(), ref.begin() + 10, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
loop.Run(10, 20, [&](size_t iter) {
std::unique_lock<std::mutex> lock(mutex);
counts[iter]++;
});
ref = std::vector<size_t>(20, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
}
BOOST_AUTO_TEST_CASE(single_threaded_with_thread_id) {
ParallelFor<size_t> pFor(1);
std::vector<size_t> counts(10, 0);
pFor.Run(0, 10, [&](size_t iter, size_t) { counts[iter]++; });
std::vector<size_t> ref(10, 1);
BOOST_CHECK_EQUAL_COLLECTIONS(counts.begin(), counts.end(), ref.begin(),
ref.end());
}
BOOST_AUTO_TEST_SUITE_END()
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