1 /* Copyright (c) 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. */
6 #include "simgrid_config.h" //For getline, keep that include first
8 #include "gras_config.h"
10 #include "xbt/sysdep.h"
13 #include "xbt/replay.h"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(replay,xbt,"Replay trace reader");
17 typedef struct s_replay_reader {
21 char *position; /* stable storage */
22 char *filename; int linenum;
23 } s_xbt_replay_reader_t;
25 static char *action_line = NULL;
26 static size_t action_len = 0;
29 static const char **action_get_action(char *name);
31 xbt_replay_reader_t xbt_replay_reader_new(const char *filename)
33 xbt_replay_reader_t res = xbt_new0(s_xbt_replay_reader_t,1);
34 res->fp = fopen(filename, "r");
35 xbt_assert(res->fp != NULL, "Cannot open %s: %s", filename,
37 res->filename = xbt_strdup(filename);
41 const char *xbt_replay_reader_position(xbt_replay_reader_t reader)
43 free(reader->position);
44 reader->position = bprintf("%s:%d",reader->filename,reader->linenum);
45 return reader->position;
48 const char **xbt_replay_reader_get(xbt_replay_reader_t reader)
52 read = getline(&reader->line, &reader->line_len, reader->fp);
53 //XBT_INFO("got from trace: %s",reader->line);
56 return NULL; /* end of file */
57 char *comment = strchr(reader->line, '#');
60 xbt_str_trim(reader->line, NULL);
61 if (reader->line[0] == '\0')
62 return xbt_replay_reader_get(reader); /* Get next line */
64 d=xbt_str_split_quoted_in_place(reader->line);
65 if (xbt_dynar_is_empty(d)) {
67 return xbt_replay_reader_get(reader); /* Get next line */
69 return xbt_dynar_to_array(d);
72 void xbt_replay_reader_free(xbt_replay_reader_t *reader)
74 free((*reader)->filename);
75 free((*reader)->position);
76 fclose((*reader)->fp);
77 free((*reader)->line);
82 /** \ingroup xbt_replay
83 * \brief Registers a function to handle a kind of action
85 * Registers a function to handle a kind of action
86 * This table is then used by #xbt_replay_action_run
88 * The argument of the function is the line describing the action, splitted on spaces with xbt_str_split_quoted()
90 * \param action_name the reference name of the action.
91 * \param function prototype given by the type: void...(xbt_dynar_t action)
93 void xbt_replay_action_register(const char *action_name, action_fun function)
95 xbt_dict_set(action_funs, action_name, function, NULL);
98 /** \ingroup xbt_replay
99 * \brief Unregisters a function, which handled a kind of action
101 * \param action_name the reference name of the action.
103 void xbt_replay_action_unregister(const char *action_name)
105 xbt_dict_remove(action_funs, action_name);
108 void _xbt_replay_action_init(void)
110 action_funs = xbt_dict_new_homogeneous(NULL);
111 action_queues = xbt_dict_new_homogeneous(NULL);
114 void _xbt_replay_action_exit(void)
116 xbt_dict_free(&action_queues);
117 xbt_dict_free(&action_funs);
121 int xbt_replay_action_runner(int argc, char *argv[])
124 if (action_fp) { // A unique trace file
126 while ((evt = action_get_action(argv[0]))) {
127 action_fun function =
128 (action_fun)xbt_dict_get(action_funs, evt[1]);
132 } else { // Should have got my trace file in argument
133 xbt_assert(argc >= 2,
134 "No '%s' agent function provided, no simulation-wide trace file provided, "
135 "and no process-wide trace file provided in deployment file. Aborting.",
138 xbt_replay_reader_t reader = xbt_replay_reader_new(argv[1]);
139 while ((evt=xbt_replay_reader_get(reader))) {
140 if (!strcmp(argv[0],evt[0])) {
141 action_fun function =
142 (action_fun)xbt_dict_get(action_funs, evt[1]);
146 XBT_WARN("%s: Ignore trace element not for me",
147 xbt_replay_reader_position(reader));
150 xbt_replay_reader_free(&reader);
156 static const char **action_get_action(char *name)
158 xbt_dynar_t evt = NULL;
159 char *evtname = NULL;
161 xbt_dynar_t myqueue = xbt_dict_get_or_null(action_queues, name);
162 if (myqueue == NULL || xbt_dynar_is_empty(myqueue)) { // nothing stored for me. Read the file further
164 if (action_fp == NULL) { // File closed now. There's nothing more to read. I'm out of here
167 // Read lines until I reach something for me (which breaks in loop body)
168 // or end of file reached
169 while (getline(&action_line, &action_len, action_fp) != -1) {
170 // cleanup and split the string I just read
171 char *comment = strchr(action_line, '#');
174 xbt_str_trim(action_line, NULL);
175 if (action_line[0] == '\0')
177 /* we cannot split in place here because we parse&store several lines for
178 * the colleagues... */
179 evt = xbt_str_split_quoted(action_line);
181 // if it's for me, I'm done
182 evtname = xbt_dynar_get_as(evt, 0, char *);
183 if (!strcmp(name, evtname)) {
184 return xbt_dynar_to_array(evt);
186 // Else, I have to store it for the relevant colleague
187 xbt_dynar_t otherqueue =
188 xbt_dict_get_or_null(action_queues, evtname);
189 if (otherqueue == NULL) { // Damn. Create the queue of that guy
191 xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
192 xbt_dict_set(action_queues, evtname, otherqueue, NULL);
194 xbt_dynar_push(otherqueue, &evt);
197 goto todo_done; // end of file reached while searching in vain for more work
199 // Get something from my queue and return it
200 xbt_dynar_shift(myqueue, &evt);
201 return xbt_dynar_to_array(evt);
205 // I did all my actions for me in the file (either I closed the file, or a colleague did)
206 // Let's cleanup before leaving
208 if (myqueue != NULL) {
209 xbt_dynar_free(&myqueue);
210 xbt_dict_remove(action_queues, name);