1 /* Copyright (c) 2009, 2010. 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 "simgrid_config.h" /* getline */
8 #include "msg/private.h"
10 #include "xbt/dynar.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_action, msg,
13 "MSG actions for trace driven simulation");
15 static xbt_dict_t action_funs;
16 static xbt_dict_t action_queues;
18 /* To split the file if a unique one is given (specific variable for the other case live in runner()) */
19 static FILE *action_fp = NULL;
20 static char *action_line = NULL;
21 static size_t action_len = 0;
23 static xbt_dynar_t action_get_action(char *name);
25 /** \ingroup msg_actions
26 * \brief Registers a function to handle a kind of action
28 * Registers a function to handle a kind of action
29 * This table is then used by #MSG_action_trace_run
31 * The argument of the function is the line describing the action, splitted on spaces with xbt_str_split_quoted()
33 * \param name the reference name of the action.
34 * \param code the function; prototype given by the type: void...(xbt_dynar_t action)
36 void MSG_action_register(const char *action_name, msg_action_fun function)
38 xbt_dict_set(action_funs, action_name, function, NULL);
41 /** \ingroup msg_actions
42 * \brief Unregisters a function, which handled a kind of action
44 * \param name the reference name of the action.
46 void MSG_action_unregister(const char *action_name)
48 xbt_dict_remove(action_funs, action_name);
51 static int MSG_action_runner(int argc, char *argv[])
53 xbt_dynar_t evt = NULL;
60 if (action_fp) { // A unique trace file
62 while ((evt = action_get_action(argv[0]))) {
63 msg_action_fun function =
64 xbt_dict_get(action_funs, xbt_dynar_get_as(evt, 1, char *));
68 } else { // Should have got my trace file in argument
69 xbt_assert1(argc >= 2,
70 "No '%s' agent function provided, no simulation-wide trace file provided to MSG_action_trace_run(), "
71 "and no process-wide trace file provided in deployment file. Aborting.",
75 fp = fopen(argv[1], "r");
76 xbt_assert2(fp != NULL, "Cannot open %s: %s", argv[1],
79 // Read lines and execute them until I reach the end of file
80 while ((read = getline(&line, &line_len, fp)) != -1) {
81 // cleanup and split the string I just read
82 comment = strchr(line, '#');
85 xbt_str_trim(line, NULL);
88 evt = xbt_str_split_quoted(line);
90 evtname = xbt_dynar_get_as(evt, 0, char *);
91 if (!strcmp(argv[0], evtname)) {
92 msg_action_fun function =
93 xbt_dict_get(action_funs, xbt_dynar_get_as(evt, 1, char *));
96 WARN1("Ignore trace element not for me: %s",
97 xbt_str_join(evt, " "));
106 void _MSG_action_init()
108 action_funs = xbt_dict_new();
109 action_queues = xbt_dict_new();
110 MSG_function_register_default(MSG_action_runner);
113 void _MSG_action_exit()
115 xbt_dict_free(&action_queues);
116 xbt_dict_free(&action_funs);
120 static xbt_dynar_t action_get_action(char *name)
123 xbt_dynar_t evt = NULL;
124 char *evtname = NULL;
126 xbt_dynar_t myqueue = xbt_dict_get_or_null(action_queues, name);
127 if (myqueue == NULL || xbt_dynar_length(myqueue) == 0) { // nothing stored for me. Read the file further
129 if (action_fp == NULL) { // File closed now. There's nothing more to read. I'm out of here
132 // Read lines until I reach something for me (which breaks in loop body)
133 // or end of file reached
134 while ((read = getline(&action_line, &action_len, action_fp)) != -1) {
135 // cleanup and split the string I just read
136 char *comment = strchr(action_line, '#');
139 xbt_str_trim(action_line, NULL);
140 if (action_line[0] == '\0')
142 evt = xbt_str_split_quoted(action_line);
144 // if it's for me, I'm done
145 evtname = xbt_dynar_get_as(evt, 0, char *);
146 if (!strcmp(name, evtname)) {
149 // Else, I have to store it for the relevant colleague
150 xbt_dynar_t otherqueue =
151 xbt_dict_get_or_null(action_queues, evtname);
152 if (otherqueue == NULL) { // Damn. Create the queue of that guy
154 xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
155 xbt_dict_set(action_queues, evtname, otherqueue, NULL);
157 xbt_dynar_push(otherqueue, &evt);
160 goto todo_done; // end of file reached while searching in vain for more work
162 // Get something from my queue and return it
163 xbt_dynar_shift(myqueue, &evt);
168 // I did all my actions for me in the file (either I closed the file, or a colleague did)
169 // Let's cleanup before leaving
171 if (myqueue != NULL) {
172 xbt_dynar_free(&myqueue);
173 xbt_dict_remove(action_queues, name);
178 /** \ingroup msg_actions
179 * \brief A trace loader
181 * If path!=NULL, load a trace file containing actions, and execute them.
182 * Else, assume that each process gets the path in its deployment file
184 MSG_error_t MSG_action_trace_run(char *path)
189 xbt_dict_cursor_t cursor;
192 action_fp = fopen(path, "r");
193 xbt_assert2(action_fp != NULL, "Cannot open %s: %s", path,
198 if (xbt_dict_size(action_queues)) {
200 ("Not all actions got consumed. If the simulation ended successfully (without deadlock), you may want to add new processes to your deployment file.");
203 xbt_dict_foreach(action_queues, cursor, name, todo) {
204 WARN2("Still %lu actions for %s", xbt_dynar_length(todo), name);
212 xbt_dict_free(&action_queues);
213 action_queues = xbt_dict_new();