Use std::thread in tests (#88)

example/tutorial5/load_all.cpp

@@ -13,16 +13,17 @@
 #include <boost/dll/runtime_symbol_info.hpp> // for program_location()
 #include <boost/dll/shared_library.hpp>
 #include <boost/make_shared.hpp>
-#include <boost/container/map.hpp>
 #include <boost/filesystem.hpp>
+
+#include <map>
 #include <iostream>
 
 //[plugcpp_plugins_collector_def
 namespace dll = boost::dll;
 
 class plugins_collector {
     // Name => plugin
-    using plugins_t = boost::container::map<std::string, dll::shared_library>;
+    using plugins_t = std::map<std::string, dll::shared_library>;
 
     boost::dll::fs::path            plugins_directory_;
     plugins_t                       plugins_;

test/Jamfile.v2

@@ -97,7 +97,7 @@ project
         [ run ../example/tutorial9/tutorial9.cpp ]
         # test for shared libraries
         [ compile-fail section_name_too_big.cpp ]
-        [ run shared_library_concurrent_load_test.cpp /boost/thread//boost_thread : : library1 library2 my_plugin_aggregator refcounting_plugin : <link>shared ]
+        [ run shared_library_concurrent_load_test.cpp : : library1 library2 my_plugin_aggregator refcounting_plugin : <link>shared ]
         [ run cpp_mangle_test.cpp : : cpp_plugin ]
         [ run cpp_mangling.cpp ]
         [ compile-fail cpp_mangling1_cf.cpp ]

test/shared_library_concurrent_load_test.cpp

@@ -6,28 +6,53 @@
 
 // For more information, see http://www.boost.org
 
-#ifdef BOOST_TRAVISCI_BUILD
-
-int main() {
-    return 0;
-}
-
-#else // #ifdef BOOST_TRAVISCI_BUILD
 
 #include "../example/b2_workarounds.hpp"
+
 #include <boost/dll.hpp>
-#include <boost/filesystem/path.hpp>
-#include <boost/thread/thread.hpp>
-#include <boost/thread/barrier.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/bind.hpp>
+
 #include <cctype>
+#include <condition_variable>
+#include <functional>
+#include <mutex>
+#include <thread>
 #include <vector>
 
+#include <boost/filesystem/path.hpp>
+
+#include <boost/core/lightweight_test.hpp>
+
+namespace {
+
 typedef std::vector<boost::dll::fs::path> paths_t;
-const std::size_t thread_count = 4;
-boost::barrier b(thread_count);
 
+class simple_barrier {
+    std::mutex mutex_;
+    std::condition_variable cv_;
+    std::size_t generation_{0};
+    const std::size_t initial_count_;
+    std::size_t count_{initial_count_};
+
+public:
+    explicit simple_barrier(std::size_t count) : initial_count_(count) {}
+    simple_barrier(simple_barrier&&) = delete;
+    simple_barrier(const simple_barrier&) = delete;
+
+    void wait() {
+        std::unique_lock<std::mutex> lock{mutex_};
+        const auto gen_snapshot = generation_;
+
+        if (--count_ == 0) {
+            ++generation_;
+            count_ = initial_count_;
+            cv_.notify_all();
+        } else {
+            cv_.wait(lock, [this, gen_snapshot] {
+                return gen_snapshot != generation_;
+            });
+        }
+    }
+};
 
 // Disgusting workarounds for b2 on Windows platform
 inline paths_t generate_paths(int argc, char* argv[]) {
@@ -44,7 +69,7 @@ inline paths_t generate_paths(int argc, char* argv[]) {
     return ret;
 }
 
-inline void load_unload(const paths_t& paths, std::size_t count) {
+inline void load_unload(const paths_t& paths, std::size_t count, simple_barrier& b) {
     for (std::size_t j = 0; j < count; j += 2) {
         for (std::size_t i = 0; i < paths.size(); ++i) {
             boost::dll::shared_library lib(paths[i]);
@@ -60,6 +85,8 @@ inline void load_unload(const paths_t& paths, std::size_t count) {
     }
 }
 
+}  // namespace
+
 
 int main(int argc, char* argv[]) {
     BOOST_TEST(argc >= 3);
@@ -70,13 +97,23 @@ int main(int argc, char* argv[]) {
     std::copy(paths.begin(), paths.end(), std::ostream_iterator<boost::dll::fs::path>(std::cout, ", "));
     std::cout << std::endl;
 
-    boost::thread_group threads;
-    for (std::size_t i = 0; i < thread_count; ++i) {
-        threads.create_thread(boost::bind(load_unload, paths, 1000));
+    constexpr std::size_t threads_count =
+#ifdef BOOST_TRAVISCI_BUILD
+        1
+#else
+        4
+#endif
+    ;
+
+    simple_barrier barrier{threads_count};
+    std::thread threads[threads_count];
+    for (auto& t: threads) {
+        t = std::thread(load_unload, paths, 1000, std::ref(barrier));
     }
-    threads.join_all();
 
+    for (auto& t: threads) {
+        t.join();
+    }
     return boost::report_errors();
 }
 
-#endif // #ifdef BOOST_TRAVISCI_BUILD