1 /* Copyright (c) 2009 The SimGrid team. All rights reserved. */
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. */
6 #include "simgrid_config.h" /* getline */
7 #include "msg/private.h"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_action,msg,"MSG actions for trace driven simulation");
13 static xbt_dict_t action_funs;
14 static xbt_dict_t action_queues;
16 /* To split the file if a unique one is given (specific variable for the other case live in runner()) */
17 static FILE *action_fp=NULL;
18 static char *action_line = NULL;
19 static size_t action_len = 0;
21 static xbt_dynar_t action_get_action(char *name);
23 /** \ingroup msg_actions
24 * \brief Registers a function to handle a kind of action
26 * Registers a function to handle a kind of action
27 * This table is then used by #MSG_action_trace_run
29 * The argument of the function is the line describing the action, splitted on spaces with xbt_str_split_quoted()
31 * \param name the reference name of the action.
32 * \param code the function; prototype given by the type: void...(xbt_dynar_t action)
34 void MSG_action_register(const char *action_name, msg_action_fun function)
36 xbt_dict_set(action_funs, action_name, function, NULL);
39 /** \ingroup msg_actions
40 * \brief Unregisters a function, which handled a kind of action
42 * \param name the reference name of the action.
44 void MSG_action_unregister(const char *action_name)
46 xbt_dict_remove(action_funs, action_name);
49 static int MSG_action_runner(int argc, char *argv[]) {
51 if (action_fp) { // A unique trace file
53 while ((evt = action_get_action(argv[0]))) {
54 msg_action_fun function =
55 xbt_dict_get(action_funs, xbt_dynar_get_as(evt, 1, char *));
59 } else { // Should have got my trace file in argument
61 "No simulation-wide trace file provided to MSG_action_trace_run(), "
62 "and no process-wide trace file provided in deployment file. Aborting."
67 FILE *fp = fopen(argv[1], "r");
68 xbt_assert2(fp != NULL, "Cannot open %s: %s", argv[1], strerror(errno));
71 // Read lines and execute them until I reach the end of file
72 while ((read = getline(&line, &line_len, fp)) != -1) {
73 // cleanup and split the string I just read
74 char *comment = strchr(line, '#');
77 xbt_str_trim(line, NULL);
80 evt = xbt_str_split_quoted(line);
82 char *evtname = xbt_dynar_get_as(evt, 0, char *);
83 if (!strcmp(argv[0],evtname)) {
84 msg_action_fun function =
85 xbt_dict_get(action_funs, xbt_dynar_get_as(evt, 1, char *));
88 WARN1("Ignore trace element not for me: %s",xbt_str_join(evt," "));
97 void _MSG_action_init()
99 action_funs = xbt_dict_new();
100 action_queues = xbt_dict_new();
101 MSG_function_register_default(MSG_action_runner);
104 void _MSG_action_exit() {
105 xbt_dict_free(&action_queues);
106 xbt_dict_free(&action_funs);
110 static xbt_dynar_t action_get_action(char *name) {
112 xbt_dynar_t evt=NULL;
115 xbt_dynar_t myqueue = xbt_dict_get_or_null(action_queues,name);
116 if (myqueue==NULL || xbt_dynar_length(myqueue)==0) { // nothing stored for me. Read the file further
118 if (action_fp==NULL) { // File closed now. There's nothing more to read. I'm out of here
122 // Read lines until I reach something for me (which breaks in loop body)
123 // or end of file reached
124 while ((read = getline(&action_line, &action_len, action_fp)) != -1) {
125 // cleanup and split the string I just read
126 char *comment = strchr(action_line, '#');
129 xbt_str_trim(action_line, NULL);
130 if (action_line[0] == '\0')
132 evt = xbt_str_split_quoted(action_line);
134 // if it's for me, I'm done
135 char *evtname = xbt_dynar_get_as(evt, 0, char *);
136 if (!strcmp(name,evtname)) {
139 // Else, I have to store it for the relevant colleague
140 xbt_dynar_t otherqueue = xbt_dict_get_or_null(action_queues,evtname);
141 if (otherqueue == NULL) { // Damn. Create the queue of that guy
142 otherqueue = xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
143 xbt_dict_set(action_queues ,evtname, otherqueue, NULL);
145 xbt_dynar_push(otherqueue,&evt);
148 goto todo_done; // end of file reached while searching in vain for more work
150 // Get something from my queue and return it
151 xbt_dynar_shift(myqueue,&evt);
156 // I did all my actions for me in the file (either I closed the file, or a colleague did)
157 // Let's cleanup before leaving
159 if (myqueue != NULL) {
160 xbt_dynar_free(&myqueue);
161 xbt_dict_remove(action_queues,name);
166 /** \ingroup msg_actions
167 * \brief A trace loader
169 * If path!=NULL, load a trace file containing actions, and execute them.
170 * Else, assume that each process gets the path in its deployment file
172 MSG_error_t MSG_action_trace_run(char *path)
177 action_fp = fopen(path, "r");
178 xbt_assert2(action_fp != NULL, "Cannot open %s: %s", path, strerror(errno));
182 if (xbt_dict_size(action_queues)) {
183 WARN0("Not all actions got consumed. If the simulation ended successfully (without deadlock), you may want to add new processes to your deployment file.");
184 xbt_dict_cursor_t cursor;
188 xbt_dict_foreach(action_queues,cursor,name,todo) {
189 WARN2("Still %lu actions for %s",xbt_dynar_length(todo),name);
197 xbt_dict_free(&action_queues);
198 action_queues = xbt_dict_new();