1 /* Copyright (c) 2010, 2012-2015, 2017. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "src/internal_config.h"
10 #include "xbt/replay.hpp"
12 #include "xbt/sysdep.h"
14 #include <boost/algorithm/string.hpp>
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(replay,xbt,"Replay trace reader");
21 bool is_replay_active = false;
26 std::ifstream* action_fs = nullptr;
27 std::unordered_map<std::string, action_fun> action_funs;
29 static void read_and_trim_line(std::ifstream* fs, std::string* line)
31 std::getline(*fs, *line);
33 XBT_DEBUG("got from trace: %s", line->c_str());
44 explicit ReplayReader(const char* filename)
46 filename_ = xbt_strdup(filename);
47 fs = new std::ifstream(filename, std::ifstream::in);
54 bool get(ReplayAction* action);
57 bool ReplayReader::get(ReplayAction* action)
59 read_and_trim_line(fs, &line);
62 if (line.length() > 0 && line.find("#") == std::string::npos) {
63 boost::split(*action, line, boost::is_any_of(" \t"), boost::token_compress_on);
69 return this->get(action);
75 if (!is_replay_active) {
76 is_replay_active = true;
84 bool replay_is_active()
86 return is_replay_active;
89 static ReplayAction* get_action(char* name)
93 std::queue<ReplayAction*>* myqueue = nullptr;
94 if (action_queues.find(std::string(name)) != action_queues.end())
95 myqueue = action_queues.at(std::string(name));
96 if (myqueue == nullptr || myqueue->empty()) { // Nothing stored for me. Read the file further
97 if (action_fs == nullptr) { // File closed now. There's nothing more to read. I'm out of here
100 // Read lines until I reach something for me (which breaks in loop body) or end of file reached
101 while (!action_fs->eof()) {
102 std::string action_line;
103 read_and_trim_line(action_fs, &action_line);
104 if (action_line.length() > 0 && action_line.find("#") == std::string::npos) {
105 /* we cannot split in place here because we parse&store several lines for the colleagues... */
106 action = new ReplayAction();
107 boost::split(*action, action_line, boost::is_any_of(" \t"), boost::token_compress_on);
109 // if it's for me, I'm done
110 std::string evtname = action->front();
111 if (evtname.compare(name) == 0) {
114 // Else, I have to store it for the relevant colleague
115 std::queue<ReplayAction*>* otherqueue = nullptr;
116 if (action_queues.find(evtname) != action_queues.end())
117 otherqueue = action_queues.at(evtname);
118 if (otherqueue == nullptr) { // Damn. Create the queue of that guy
119 otherqueue = new std::queue<ReplayAction*>();
120 action_queues.insert({evtname, otherqueue});
122 otherqueue->push(action);
126 // end of file reached while searching in vain for more work
128 // Get something from my queue and return it
129 action = myqueue->front();
134 // All my actions in the file are done and either I or a colleague closed the file. Let's cleanup before leaving.
136 if (myqueue != nullptr) {
138 action_queues.erase(std::string(name));
143 static void handle_action(ReplayAction* action)
145 XBT_DEBUG("%s replays a %s action", action->at(0).c_str(), action->at(1).c_str());
146 char** c_action = new char*[action->size() + 1];
147 action_fun function = action_funs.at(action->at(1));
149 for (auto arg : *action) {
150 c_action[i] = xbt_strdup(arg.c_str());
153 c_action[i] = nullptr;
156 } catch (xbt_ex& e) {
157 for (unsigned int j = 0; j < action->size(); j++)
158 xbt_free(c_action[j]);
161 xbt_die("Replay error:\n %s", e.what());
163 for (unsigned int j = 0; j < action->size(); j++)
164 xbt_free(c_action[j]);
169 * \ingroup XBT_replay
170 * \brief function used internally to actually run the replay
175 int replay_runner(int argc, char* argv[])
177 if (simgrid::xbt::action_fs) { // A unique trace file
179 simgrid::xbt::ReplayAction* evt = simgrid::xbt::get_action(argv[0]);
182 simgrid::xbt::handle_action(evt);
185 } else { // Should have got my trace file in argument
186 simgrid::xbt::ReplayAction* evt = new simgrid::xbt::ReplayAction();
187 xbt_assert(argc >= 2, "No '%s' agent function provided, no simulation-wide trace file provided, "
188 "and no process-wide trace file provided in deployment file. Aborting.",
190 simgrid::xbt::ReplayReader* reader = new simgrid::xbt::ReplayReader(argv[1]);
191 while (reader->get(evt)) {
192 if (evt->at(0).compare(argv[0]) == 0) {
193 simgrid::xbt::handle_action(evt);
195 XBT_WARN("%s:%d: Ignore trace element not for me", reader->filename_, reader->linenum);
208 * \ingroup XBT_replay
209 * \brief Registers a function to handle a kind of action
211 * Registers a function to handle a kind of action
212 * This table is then used by \ref xbt_replay_action_runner
214 * The argument of the function is the line describing the action, fields separated by spaces.
216 * \param action_name the reference name of the action.
217 * \param function prototype given by the type: void...(const char** action)
219 void xbt_replay_action_register(const char* action_name, action_fun function)
221 if (!is_replay_active) // If the user registers a function before the start
222 simgrid::xbt::replay_init();
223 simgrid::xbt::action_funs.insert({std::string(action_name), function});