1// Copyright Antony Polukhin, 2015-2024
2//
3// Distributed under the Boost Software License, Version 1.0.
4// (See accompanying file LICENSE_1_0.txt
5// or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7// For more information, see http://www.boost.org
8
9#ifdef BOOST_TRAVISCI_BUILD
10
11int main() {
12 return 0;
13}
14
15#else // #ifdef BOOST_TRAVISCI_BUILD
16
17#include "../example/b2_workarounds.hpp"
18#include <boost/dll.hpp>
19#include <boost/filesystem/path.hpp>
20#include <boost/thread/thread.hpp>
21#include <boost/thread/barrier.hpp>
22#include <boost/core/lightweight_test.hpp>
23#include <boost/bind.hpp>
24#include <cctype>
25#include <vector>
26
27typedef std::vector<boost::dll::fs::path> paths_t;
28const std::size_t thread_count = 4;
29boost::barrier b(thread_count);
30
31
32// Disgusting workarounds for b2 on Windows platform
33inline paths_t generate_paths(int argc, char* argv[]) {
34 paths_t ret;
35 ret.reserve(n: argc - 1);
36
37 for (int i = 1; i < argc; ++i) {
38 boost::dll::fs::path p = argv[i];
39 if (b2_workarounds::is_shared_library(p)) {
40 ret.push_back(x: p);
41 }
42 }
43
44 return ret;
45}
46
47inline void load_unload(const paths_t& paths, std::size_t count) {
48 for (std::size_t j = 0; j < count; j += 2) {
49 for (std::size_t i = 0; i < paths.size(); ++i) {
50 boost::dll::shared_library lib(paths[i]);
51 BOOST_TEST(lib);
52 }
53 for (std::size_t i = 0; i < paths.size(); ++i) {
54 boost::dll::shared_library lib(paths[i]);
55 BOOST_TEST(lib.location() != "");
56 }
57
58 // Waiting for all threads to unload shared libraries
59 b.wait();
60 }
61}
62
63
64int main(int argc, char* argv[]) {
65 BOOST_TEST(argc >= 3);
66 paths_t paths = generate_paths(argc, argv);
67 BOOST_TEST(!paths.empty());
68
69 std::cout << "Libraries:\n\t";
70 std::copy(first: paths.begin(), last: paths.end(), result: std::ostream_iterator<boost::dll::fs::path>(std::cout, ", "));
71 std::cout << std::endl;
72
73 boost::thread_group threads;
74 for (std::size_t i = 0; i < thread_count; ++i) {
75 threads.create_thread(threadfunc: boost::bind(f: load_unload, a1: paths, a2: 1000));
76 }
77 threads.join_all();
78
79 return boost::report_errors();
80}
81
82#endif // #ifdef BOOST_TRAVISCI_BUILD
83

source code of boost/libs/dll/test/shared_library_concurrent_load_test.cpp