examples/s4u/replay-storage/s4u-replay-storage.cpp

   1 /* Copyright (c) 2017-2019. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include <simgrid/plugins/file_system.h>
   7 #include <simgrid/s4u.hpp>
   8 #include <xbt/replay.hpp>
   9 #include <xbt/str.h>
  10
  11 #include <boost/algorithm/string/join.hpp>
  12
  13 XBT_LOG_NEW_DEFAULT_CATEGORY(replay_storage, "Messages specific for this example");
  14
  15 static std::unordered_map<std::string, simgrid::s4u::File*> opened_files;
  16
  17 #define ACT_DEBUG(...)                                                                                                 \
  18   if (XBT_LOG_ISENABLED(replay_storage, xbt_log_priority_verbose)) {                                                   \
  19     std::string NAME = boost::algorithm::join(action, " ");                                                            \
  20     XBT_DEBUG(__VA_ARGS__);                                                                                            \
  21   } else                                                                                                               \
  22   ((void)0)
  23
  24 static void log_action(simgrid::xbt::ReplayAction& action, double date)
  25 {
  26   if (XBT_LOG_ISENABLED(replay_storage, xbt_log_priority_verbose)) {
  27     std::string s = boost::algorithm::join(action, " ");
  28     XBT_VERB("%s %f", s.c_str(), date);
  29   }
  30 }
  31
  32 static simgrid::s4u::File* get_file_descriptor(const std::string& file_name)
  33 {
  34   std::string full_name = simgrid::s4u::this_actor::get_name() + ":" + file_name;
  35
  36   return opened_files.at(full_name);
  37 }
  38
  39 class Replayer {
  40 public:
  41   explicit Replayer(std::vector<std::string> args)
  42   {
  43     const char* actor_name = args[0].c_str();
  44     simgrid::xbt::replay_runner(actor_name, nullptr);
  45   }
  46
  47   void operator()()
  48   {
  49     // Nothing to do here
  50   }
  51
  52   /* My actions */
  53   static void open(simgrid::xbt::ReplayAction& action)
  54   {
  55     std::string file_name = action[2];
  56     double clock          = simgrid::s4u::Engine::get_clock();
  57     std::string full_name = simgrid::s4u::this_actor::get_name() + ":" + file_name;
  58
  59     ACT_DEBUG("Entering Open: %s (filename: %s)", NAME.c_str(), file_name.c_str());
  60     simgrid::s4u::File* file = new simgrid::s4u::File(file_name, NULL);
  61
  62     opened_files.insert({full_name, file});
  63
  64     log_action(action, simgrid::s4u::Engine::get_clock() - clock);
  65   }
  66
  67   static void read(simgrid::xbt::ReplayAction& action)
  68   {
  69     std::string file_name = action[2];
  70     sg_size_t size        = std::stoul(action[3]);
  71     double clock          = simgrid::s4u::Engine::get_clock();
  72
  73     simgrid::s4u::File* file = get_file_descriptor(file_name);
  74
  75     ACT_DEBUG("Entering Read: %s (size: %llu)", NAME.c_str(), size);
  76     file->read(size);
  77
  78     log_action(action, simgrid::s4u::Engine::get_clock() - clock);
  79   }
  80
  81   static void close(simgrid::xbt::ReplayAction& action)
  82   {
  83     std::string file_name = action[2];
  84     double clock          = simgrid::s4u::Engine::get_clock();
  85
  86     simgrid::s4u::File* file = get_file_descriptor(file_name);
  87
  88     ACT_DEBUG("Entering Close: %s (filename: %s)", NAME.c_str(), file_name.c_str());
  89     delete file;
  90
  91     log_action(action, simgrid::s4u::Engine::get_clock() - clock);
  92   }
  93 };
  94
  95 int main(int argc, char* argv[])
  96 {
  97   simgrid::s4u::Engine e(&argc, argv);
  98   sg_storage_file_system_init();
  99
 100   xbt_assert(argc > 3, "Usage: %s platform_file deployment_file [action_files]\n"
 101                        "\texample: %s platform.xml deployment.xml actions # if all actions are in the same file\n"
 102                        "\t# if actions are in separate files, specified in deployment\n"
 103                        "\texample: %s platform.xml deployment.xml",
 104              argv[0], argv[0], argv[0]);
 105
 106   e.load_platform(argv[1]);
 107   e.register_actor<Replayer>("p0");
 108   e.load_deployment(argv[2]);
 109
 110   /*   Action registration */
 111   xbt_replay_action_register("open", Replayer::open);
 112   xbt_replay_action_register("read", Replayer::read);
 113   xbt_replay_action_register("close", Replayer::close);
 114
 115   if (argv[3]) {
 116     simgrid::xbt::action_fs = new std::ifstream(argv[3], std::ifstream::in);
 117   }
 118
 119   e.run();
 120
 121   if (argv[3]) {
 122     delete simgrid::xbt::action_fs;
 123     simgrid::xbt::action_fs = nullptr;
 124   }
 125
 126   XBT_INFO("Simulation time %g", e.get_clock());
 127
 128   return 0;
 129 }