taskflow/unittests/test_compositions.cpp at master · ModuleWorks/taskflow · GitHub

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#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN

#include <doctest.h>

#include <taskflow/taskflow.hpp>

// --------------------------------------------------------

// Testcase: Composition

// --------------------------------------------------------

TEST_CASE("Composition-1" * doctest::timeout(300)) {

for(unsigned w=1; w<=8; ++w) {

tf::Executor executor(w);

tf::Taskflow f0;

int cnt {0};

auto A = f0.emplace([&cnt](){ ++cnt; });

auto B = f0.emplace([&cnt](){ ++cnt; });

auto C = f0.emplace([&cnt](){ ++cnt; });

auto D = f0.emplace([&cnt](){ ++cnt; });

auto E = f0.emplace([&cnt](){ ++cnt; });

A.precede(B);

B.precede(C);

C.precede(D);

D.precede(E);

tf::Taskflow f1;

// module 1

std::tie(A, B, C, D, E) = f1.emplace(

[&cnt] () { ++cnt; },

[&cnt] () { ++cnt; }

);

A.precede(B);

B.precede(C);

C.precede(D);

D.precede(E);

auto m1_1 = f1.composed_of(f0);

E.precede(m1_1);

executor.run(f1).get();

REQUIRE(cnt == 10);

cnt = 0;

executor.run_n(f1, 100).get();

REQUIRE(cnt == 10 * 100);

auto m1_2 = f1.composed_of(f0);

m1_1.precede(m1_2);

for(int n=0; n<100; n++) {

cnt = 0;

executor.run_n(f1, n).get();

REQUIRE(cnt == 15*n);

}

cnt = 0;

for(int n=0; n<100; n++) {

executor.run(f1);

}

executor.wait_for_all();

REQUIRE(cnt == 1500);

}

// TESTCASE: composition-2

TEST_CASE("Composition-2" * doctest::timeout(300)) {

for(unsigned w=1; w<=8; ++w) {

tf::Executor executor(w);

int cnt {0};

// level 0 (+5)

tf::Taskflow f0;

auto A = f0.emplace([&cnt](){ ++cnt; }).name("f0A");

auto B = f0.emplace([&cnt](){ ++cnt; }).name("f0B");

auto C = f0.emplace([&cnt](){ ++cnt; }).name("f0C");

auto D = f0.emplace([&cnt](){ ++cnt; }).name("f0D");

auto E = f0.emplace([&cnt](){ ++cnt; }).name("f0E");

A.precede(B);

B.precede(C);

C.precede(D);

D.precede(E);

// level 1 (+10)

tf::Taskflow f1;

auto m1_1 = f1.composed_of(f0).name("m1_1");

auto m1_2 = f1.composed_of(f0).name("m1_2");

m1_1.precede(m1_2);

// level 2 (+20)

tf::Taskflow f2;

auto m2_1 = f2.composed_of(f1).name("m2_1");

auto m2_2 = f2.composed_of(f1).name("m2_2");

m2_1.precede(m2_2);

//f2.dump(std::cout);

// synchronous run

for(int n=0; n<100; n++) {

cnt = 0;

executor.run_n(f2, n).get();

REQUIRE(cnt == 20*n);

}

// asynchronous run

cnt = 0;

for(int n=0; n<100; n++) {

executor.run(f2);

}

executor.wait_for_all();

REQUIRE(cnt == 100*20);

}

// TESTCASE: composition-3

TEST_CASE("Composition-3" * doctest::timeout(300)) {

for(unsigned w=1; w<=8; ++w) {

tf::Executor executor(w);

int cnt {0};

// level 0 (+2)

tf::Taskflow f0;

auto A = f0.emplace([&cnt](){ ++cnt; });

auto B = f0.emplace([&cnt](){ ++cnt; });

A.precede(B);

// level 1 (+4)

tf::Taskflow f1;

auto m1_1 = f1.composed_of(f0);

auto m1_2 = f1.composed_of(f0);

m1_1.precede(m1_2);

// level 2 (+8)

tf::Taskflow f2;

auto m2_1 = f2.composed_of(f1);

auto m2_2 = f2.composed_of(f1);

m2_1.precede(m2_2);

// level 3 (+16)

tf::Taskflow f3;

auto m3_1 = f3.composed_of(f2);

auto m3_2 = f3.composed_of(f2);

m3_1.precede(m3_2);

// synchronous run

for(int n=0; n<100; n++) {

cnt = 0;

executor.run_n(f3, n).get();

REQUIRE(cnt == 16*n);

}

// asynchronous run

cnt = 0;

for(int n=0; n<100; n++) {

executor.run(f3);

}

executor.wait_for_all();

REQUIRE(cnt == 16*100);

}

// ----------------------------------------------------------------------------

// ParallelCompositions

// ----------------------------------------------------------------------------

TEST_CASE("ParallelCompositions") {

std::vector<tf::Taskflow> taskflows(100);

tf::Executor executor(4);

tf::Taskflow taskflow;

std::atomic<int> counter{0};

for(auto& tf : taskflows) {

for(size_t n=0; n<100; n++) {

auto [A, B, C, D, E, F, G, H] = tf.emplace(

[&](){ counter.fetch_add(1, std::memory_order_relaxed); },

[&](){ counter.fetch_add(1, std::memory_order_relaxed); }

);

A.precede(B);

A.precede(C);

D.precede(E);

D.precede(F);

}

taskflow.composed_of(tf);

}

executor.run(taskflow).wait();

REQUIRE(counter == 80000);

}

taskflow/unittests/test_compositions.cpp at master · ModuleWorks/taskflow · GitHub

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