osrm-backend/third_party/libosmium/test/t/thread/test_pool.cpp
Daniel J. Hofmann d516e1c736 Update in-tree libosmium dependency to 2.5.4
The latest releases have some critical fixes, see the changelog:
https://github.com/osmcode/libosmium/blob/v2.5.4/CHANGELOG.md

Merge commit 'afdf8e7b21fbaf597e91d9d8a7542635e60ee9a1' into use_libosmium_2_5_4
2016-01-05 12:01:06 +01:00

73 lines
2.3 KiB
C++

#include "catch.hpp"
#include <chrono>
#include <stdexcept>
#include <thread>
#include <osmium/thread/pool.hpp>
#include <osmium/util/compatibility.hpp>
struct test_job_with_result {
int operator()() const {
return 42;
}
};
struct test_job_throw {
OSMIUM_NORETURN void operator()() const {
throw std::runtime_error("exception in pool thread");
}
};
TEST_CASE("number of threads in pool") {
// hardcoded setting
REQUIRE(osmium::thread::detail::get_pool_size( 1, 0, 2) == 1);
REQUIRE(osmium::thread::detail::get_pool_size( 4, 0, 2) == 4);
REQUIRE(osmium::thread::detail::get_pool_size( 4, 0, 4) == 4);
REQUIRE(osmium::thread::detail::get_pool_size(16, 0, 4) == 16);
REQUIRE(osmium::thread::detail::get_pool_size(16, 0, 16) == 16);
REQUIRE(osmium::thread::detail::get_pool_size( 8, 4, 2) == 8);
REQUIRE(osmium::thread::detail::get_pool_size( 8, 16, 2) == 8);
REQUIRE(osmium::thread::detail::get_pool_size(-2, 16, 2) == 1);
REQUIRE(osmium::thread::detail::get_pool_size(-2, 16, 8) == 6);
// user decides through OSMIUM_POOL_THREADS env variable
REQUIRE(osmium::thread::detail::get_pool_size( 0, 0, 2) == 1);
REQUIRE(osmium::thread::detail::get_pool_size( 0, -2, 4) == 2);
REQUIRE(osmium::thread::detail::get_pool_size( 0, -1, 8) == 7);
REQUIRE(osmium::thread::detail::get_pool_size( 0, 0, 16) == 14);
REQUIRE(osmium::thread::detail::get_pool_size( 0, 1, 16) == 1);
REQUIRE(osmium::thread::detail::get_pool_size( 0, 2, 16) == 2);
REQUIRE(osmium::thread::detail::get_pool_size( 0, 4, 16) == 4);
REQUIRE(osmium::thread::detail::get_pool_size( 0, 8, 16) == 8);
// outliers
REQUIRE(osmium::thread::detail::get_pool_size(-100, 0, 16) == 1);
REQUIRE(osmium::thread::detail::get_pool_size(1000, 0, 16) == 256);
}
TEST_CASE("thread") {
auto& pool = osmium::thread::Pool::instance();
SECTION("can get access to thread pool") {
REQUIRE(pool.queue_empty());
}
SECTION("can send job to thread pool") {
auto future = pool.submit(test_job_with_result {});
REQUIRE(future.get() == 42);
}
SECTION("can throw from job in thread pool") {
auto future = pool.submit(test_job_throw {});
REQUIRE_THROWS_AS(future.get(), std::runtime_error);
}
}