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 "src/plugins/file_system/FileSystem.hpp"
   8 #include <boost/algorithm/string/join.hpp>
   9 #include <simgrid/plugins/file_system.h>
  10 #include <xbt/replay.hpp>
  11 #include <xbt/str.h>
  12
  13 XBT_LOG_NEW_DEFAULT_CATEGORY(storage_actions, "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(storage_actions, xbt_log_priority_verbose)) {                                                  \
  19     char* NAME = xbt_str_join_array(action, " ");                                                                      \
  20     XBT_DEBUG(__VA_ARGS__);                                                                                            \
  21     xbt_free(NAME);                                                                                                    \
  22   } else                                                                                                               \
  23   ((void)0)
  24
  25 static void log_action(const char* const* action, double date)
  26 {
  27   if (XBT_LOG_ISENABLED(storage_actions, xbt_log_priority_verbose)) {
  28     char* name = xbt_str_join_array(action, " ");
  29     XBT_VERB("%s %f", name, date);
  30     xbt_free(name);
  31   }
  32 }
  33
  34 static simgrid::s4u::File* get_file_descriptor(std::string file_name)
  35 {
  36   std::string full_name = simgrid::s4u::this_actor::getName() + ":" + file_name;
  37
  38   return opened_files.at(full_name);
  39 }
  40
  41 class Replayer {
  42 public:
  43   explicit Replayer(std::vector<std::string> args)
  44   {
  45     int argc;
  46     char* argv[2];
  47     argv[0] = &args.at(0)[0];
  48     if (args.size() == 1) {
  49       argc = 1;
  50     } else {
  51       argc    = 2;
  52       argv[1] = &args.at(1)[0];
  53     }
  54     simgrid::xbt::replay_runner(argc, argv);
  55   }
  56
  57   void operator()()
  58   {
  59     // Nothing to do here
  60   }
  61
  62   /* My actions */
  63   static void open(const char* const* action)
  64   {
  65     std::string file_name = action[2];
  66     double clock          = simgrid::s4u::Engine::getClock();
  67     std::string full_name = simgrid::s4u::this_actor::getName() + ":" + file_name;
  68
  69     ACT_DEBUG("Entering Open: %s (filename: %s)", NAME, file_name.c_str());
  70     simgrid::s4u::File* file = new simgrid::s4u::File(file_name, NULL);
  71
  72     opened_files.insert({full_name, file});
  73
  74     log_action(action, simgrid::s4u::Engine::getClock() - clock);
  75   }
  76
  77   static void read(const char* const* action)
  78   {
  79     std::string file_name = action[2];
  80     sg_size_t size        = std::stoul(action[3]);
  81     double clock          = simgrid::s4u::Engine::getClock();
  82
  83     simgrid::s4u::File* file = get_file_descriptor(file_name);
  84
  85     ACT_DEBUG("Entering Read: %s (size: %llu)", NAME, size);
  86     file->read(size);
  87
  88     log_action(action, simgrid::s4u::Engine::getClock() - clock);
  89   }
  90
  91   static void close(const char* const* action)
  92   {
  93     std::string file_name = action[2];
  94     double clock          = simgrid::s4u::Engine::getClock();
  95
  96     simgrid::s4u::File* file = get_file_descriptor(file_name);
  97
  98     ACT_DEBUG("Entering Close: %s (filename: %s)", NAME, file_name.c_str());
  99     delete file;
 100
 101     log_action(action, simgrid::s4u::Engine::getClock() - clock);
 102   }
 103 };
 104
 105 int main(int argc, char* argv[])
 106 {
 107   simgrid::s4u::Engine e(&argc, argv);
 108   sg_storage_file_system_init();
 109
 110   xbt_assert(argc > 3, "Usage: %s platform_file deployment_file [action_files]\n"
 111                        "\texample: %s platform.xml deployment.xml actions # if all actions are in the same file\n"
 112                        "\t# if actions are in separate files, specified in deployment\n"
 113                        "\texample: %s platform.xml deployment.xml",
 114              argv[0], argv[0], argv[0]);
 115
 116   e.loadPlatform(argv[1]);
 117   e.registerDefault(&simgrid::xbt::replay_runner);
 118   e.registerFunction<Replayer>("p0");
 119   e.loadDeployment(argv[2]);
 120
 121   /*   Action registration */
 122   xbt_replay_action_register("open", Replayer::open);
 123   xbt_replay_action_register("read", Replayer::read);
 124   xbt_replay_action_register("close", Replayer::close);
 125
 126   if (argv[3]) {
 127     simgrid::xbt::action_fs = new std::ifstream(argv[3], std::ifstream::in);
 128   }
 129
 130   e.run();
 131
 132   if (argv[3]) {
 133     delete simgrid::xbt::action_fs;
 134     simgrid::xbt::action_fs = nullptr;
 135   }
 136
 137   XBT_INFO("Simulation time %g", e.getClock());
 138
 139   return 0;
 140 }