ceph/src/boost/libs/dll/test/shared_library_concurrent_load_test.cpp

   1 // Copyright 2015-2020 Antony Polukhin
   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
  11 int 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
  27 typedef std::vector<boost::dll::fs::path> paths_t;
  28 const std::size_t thread_count = 4;
  29 boost::barrier b(thread_count);
  30
  31
  32 // Disgusting workarounds for b2 on Windows platform
  33 inline paths_t generate_paths(int argc, char* argv[]) {
  34     paths_t ret;
  35     ret.reserve(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(p);
  41         }
  42     }
  43
  44     return ret;
  45 }
  46
  47 inline 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
  64 int 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(paths.begin(), paths.end(), 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(boost::bind(load_unload, paths, 1000));
  76     }
  77     threads.join_all();
  78
  79     return boost::report_errors();
  80 }
  81
  82 #endif // #ifdef BOOST_TRAVISCI_BUILD