examples/s4u/actions-storage/s4u-actions-storage.cpp

   1 /* Copyright (c) 2017. 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/s4u.hpp"
   7 #include <boost/algorithm/string/join.hpp>
   8 #include <xbt/replay.hpp>
   9 #include <xbt/str.h>
  10
  11 XBT_LOG_NEW_DEFAULT_CATEGORY(storage_actions, "Messages specific for this example");
  12
  13 static std::unordered_map<std::string, simgrid::s4u::File*> opened_files;
  14
  15 #define ACT_DEBUG(...)                                                                                                 \
  16   if (XBT_LOG_ISENABLED(storage_actions, xbt_log_priority_verbose)) {                                                  \
  17     char* NAME = xbt_str_join_array(action, " ");                                                                      \
  18     XBT_DEBUG(__VA_ARGS__);                                                                                            \
  19     xbt_free(NAME);                                                                                                    \
  20   } else                                                                                                               \
  21   ((void)0)
  22
  23 static void log_action(const char* const* action, double date)
  24 {
  25   if (XBT_LOG_ISENABLED(storage_actions, xbt_log_priority_verbose)) {
  26     char* name = xbt_str_join_array(action, " ");
  27     XBT_VERB("%s %f", name, date);
  28     xbt_free(name);
  29   }
  30 }
  31
  32 static simgrid::s4u::File* get_file_descriptor(std::string file_name)
  33 {
  34   std::string full_name = simgrid::s4u::this_actor::getName() + ":" + 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     int argc;
  44     char* argv[2];
  45     argv[0] = &args.at(0)[0];
  46     if (args.size() == 1) {
  47       argc = 1;
  48     } else {
  49       argc    = 2;
  50       argv[1] = &args.at(1)[0];
  51     }
  52     simgrid::xbt::replay_runner(argc, argv);
  53   }
  54
  55   void operator()()
  56   {
  57     // Nothing to do here
  58   }
  59
  60   /* My actions */
  61   static void open(const char* const* action)
  62   {
  63     std::string file_name = action[2];
  64     double clock          = simgrid::s4u::Engine::getClock();
  65     std::string full_name = simgrid::s4u::this_actor::getName() + ":" + file_name;
  66
  67     ACT_DEBUG("Entering Open: %s (filename: %s)", NAME, file_name.c_str());
  68     simgrid::s4u::File* file = new simgrid::s4u::File(file_name, NULL);
  69
  70     opened_files.insert({full_name, file});
  71
  72     log_action(action, simgrid::s4u::Engine::getClock() - clock);
  73   }
  74
  75   static void read(const char* const* action)
  76   {
  77     std::string file_name = action[2];
  78     sg_size_t size        = std::stoul(action[3]);
  79     double clock          = simgrid::s4u::Engine::getClock();
  80
  81     simgrid::s4u::File* file = get_file_descriptor(file_name);
  82
  83     ACT_DEBUG("Entering Read: %s (size: %llu)", NAME, size);
  84     file->read(size);
  85
  86     log_action(action, simgrid::s4u::Engine::getClock() - clock);
  87   }
  88
  89   static void close(const char* const* action)
  90   {
  91     std::string file_name = action[2];
  92     double clock          = simgrid::s4u::Engine::getClock();
  93
  94     simgrid::s4u::File* file = get_file_descriptor(file_name);
  95
  96     ACT_DEBUG("Entering Close: %s (filename: %s)", NAME, file_name.c_str());
  97     delete file;
  98
  99     log_action(action, simgrid::s4u::Engine::getClock() - clock);
 100   }
 101 };
 102
 103 int main(int argc, char* argv[])
 104 {
 105   simgrid::s4u::Engine e(&argc, argv);
 106
 107   xbt_assert(argc > 3, "Usage: %s platform_file deployment_file [action_files]\n"
 108                        "\texample: %s platform.xml deployment.xml actions # if all actions are in the same file\n"
 109                        "\t# if actions are in separate files, specified in deployment\n"
 110                        "\texample: %s platform.xml deployment.xml",
 111              argv[0], argv[0], argv[0]);
 112
 113   e.loadPlatform(argv[1]);
 114   e.registerDefault(&simgrid::xbt::replay_runner);
 115   e.registerFunction<Replayer>("p0");
 116   e.loadDeployment(argv[2]);
 117
 118   /*   Action registration */
 119   xbt_replay_action_register("open", Replayer::open);
 120   xbt_replay_action_register("read", Replayer::read);
 121   xbt_replay_action_register("close", Replayer::close);
 122
 123   if (argv[3]) {
 124     simgrid::xbt::action_fs = new std::ifstream(argv[3], std::ifstream::in);
 125   }
 126
 127   e.run();
 128
 129   if (argv[3]) {
 130     delete simgrid::xbt::action_fs;
 131     simgrid::xbt::action_fs = nullptr;
 132   }
 133
 134   XBT_INFO("Simulation time %g", e.getClock());
 135
 136   return 0;
 137 }