-/* Copyright (c) 2009 The SimGrid team. All rights reserved. */
+/* Copyright (c) 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "msg/private.h"
+#include "simgrid_config.h" //For getline, keep that include first
+
+#include "msg_private.h"
#include "xbt/str.h"
#include "xbt/dynar.h"
+#include "xbt/replay_trace_reader.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_action, msg,
+ "MSG actions for trace driven simulation");
static xbt_dict_t action_funs;
-static xbt_dynar_t action_list;
+static xbt_dict_t action_queues;
+/* To split the file if a unique one is given (specific variable for the other case live in runner()) */
+static FILE *action_fp = NULL;
+static char *action_line = NULL;
+static size_t action_len = 0;
-/** \ingroup msg_actions
+static const char **action_get_action(char *name);
+
+/** \ingroup msg_trace_driven
* \brief Registers a function to handle a kind of action
*
* Registers a function to handle a kind of action
*
* The argument of the function is the line describing the action, splitted on spaces with xbt_str_split_quoted()
*
- * \param name the reference name of the action.
- * \param code the function; prototype given by the type: void...(xbt_dynar_t action)
+ * \param action_name the reference name of the action.
+ * \param function prototype given by the type: void...(xbt_dynar_t action)
*/
void MSG_action_register(const char *action_name, msg_action_fun function)
{
xbt_dict_set(action_funs, action_name, function, NULL);
}
-/** \ingroup msg_actions
+/** \ingroup msg_trace_driven
* \brief Unregisters a function, which handled a kind of action
*
- * \param name the reference name of the action.
+ * \param action_name the reference name of the action.
*/
void MSG_action_unregister(const char *action_name)
{
static int MSG_action_runner(int argc, char *argv[])
{
- xbt_dynar_t evt;
- unsigned int cursor;
+ const char **evt;
+ if (action_fp) { // A unique trace file
- xbt_dynar_foreach(action_list, cursor, evt) {
- if (!strcmp(xbt_dynar_get_as(evt, 0, char *), argv[0])) {
+ while ((evt = action_get_action(argv[0]))) {
msg_action_fun function =
- xbt_dict_get(action_funs, xbt_dynar_get_as(evt, 1, char *));
- (*function) (evt);
+ (msg_action_fun)xbt_dict_get(action_funs, evt[1]);
+ function(evt);
+ free(evt);
+ }
+ } else { // Should have got my trace file in argument
+ xbt_assert(argc >= 2,
+ "No '%s' agent function provided, no simulation-wide trace file provided to MSG_action_trace_run(), "
+ "and no process-wide trace file provided in deployment file. Aborting.",
+ argv[0]
+ );
+ xbt_replay_trace_reader_t reader = xbt_replay_trace_reader_new(argv[1]);
+ while ((evt=xbt_replay_trace_reader_get(reader))) {
+ if (!strcmp(argv[0],evt[0])) {
+ msg_action_fun function =
+ (msg_action_fun)xbt_dict_get(action_funs, evt[1]);
+ function(evt);
+ free(evt);
+ } else {
+ XBT_WARN("%s: Ignore trace element not for me",
+ xbt_replay_trace_reader_position(reader));
+ }
}
+ xbt_replay_trace_reader_free(&reader);
}
-
return 0;
}
void _MSG_action_init()
{
- action_funs = xbt_dict_new();
- action_list = xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
+ action_funs = xbt_dict_new_homogeneous(NULL);
+ action_queues = xbt_dict_new_homogeneous(NULL);
MSG_function_register_default(MSG_action_runner);
}
-/** \ingroup msg_actions
+void _MSG_action_exit()
+{
+ xbt_dict_free(&action_queues);
+ xbt_dict_free(&action_funs);
+}
+
+
+static const char **action_get_action(char *name)
+{
+ xbt_dynar_t evt = NULL;
+ char *evtname = NULL;
+
+ xbt_dynar_t myqueue = xbt_dict_get_or_null(action_queues, name);
+ if (myqueue == NULL || xbt_dynar_is_empty(myqueue)) { // nothing stored for me. Read the file further
+
+ if (action_fp == NULL) { // File closed now. There's nothing more to read. I'm out of here
+ goto todo_done;
+ }
+ // Read lines until I reach something for me (which breaks in loop body)
+ // or end of file reached
+ while (getline(&action_line, &action_len, action_fp) != -1) {
+ // cleanup and split the string I just read
+ char *comment = strchr(action_line, '#');
+ if (comment != NULL)
+ *comment = '\0';
+ xbt_str_trim(action_line, NULL);
+ if (action_line[0] == '\0')
+ continue;
+ /* we cannot split in place here because we parse&store several lines for
+ * the colleagues... */
+ evt = xbt_str_split_quoted(action_line);
+
+ // if it's for me, I'm done
+ evtname = xbt_dynar_get_as(evt, 0, char *);
+ if (!strcmp(name, evtname)) {
+ return xbt_dynar_to_array(evt);
+ } else {
+ // Else, I have to store it for the relevant colleague
+ xbt_dynar_t otherqueue =
+ xbt_dict_get_or_null(action_queues, evtname);
+ if (otherqueue == NULL) { // Damn. Create the queue of that guy
+ otherqueue =
+ xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
+ xbt_dict_set(action_queues, evtname, otherqueue, NULL);
+ }
+ xbt_dynar_push(otherqueue, &evt);
+ }
+ }
+ goto todo_done; // end of file reached while searching in vain for more work
+ } else {
+ // Get something from my queue and return it
+ xbt_dynar_shift(myqueue, &evt);
+ return xbt_dynar_to_array(evt);
+ }
+
+
+ // I did all my actions for me in the file (either I closed the file, or a colleague did)
+ // Let's cleanup before leaving
+todo_done:
+ if (myqueue != NULL) {
+ xbt_dynar_free(&myqueue);
+ xbt_dict_remove(action_queues, name);
+ }
+ return NULL;
+}
+
+/** \ingroup msg_trace_driven
* \brief A trace loader
*
- * Load a trace file containing actions, and execute them.
+ * If path!=NULL, load a trace file containing actions, and execute them.
+ * Else, assume that each process gets the path in its deployment file
*/
MSG_error_t MSG_action_trace_run(char *path)
{
MSG_error_t res;
-
- FILE *fp;
- char *line = NULL;
- size_t len = 0;
- ssize_t read;
-
- xbt_dynar_t evt;
-
- fp = fopen(path, "r");
- xbt_assert2(fp != NULL, "Cannot open %s: %s", path, strerror(errno));
-
- while ((read = getline(&line, &len, fp)) != -1) {
- char *comment = strchr(line, '#');
- if (comment != NULL)
- *comment = '\0';
- xbt_str_trim(line, NULL);
- if (line[0] == '\0')
- continue;
- evt = xbt_str_split_quoted(line);
- xbt_dynar_push(action_list, &evt);
+ char *name;
+ xbt_dynar_t todo;
+ xbt_dict_cursor_t cursor;
+
+ if (path) {
+ action_fp = fopen(path, "r");
+ xbt_assert(action_fp != NULL, "Cannot open %s: %s", path,
+ strerror(errno));
}
+ res = MSG_main();
- if (line)
- free(line);
- fclose(fp);
+ if (!xbt_dict_is_empty(action_queues)) {
+ XBT_WARN
+ ("Not all actions got consumed. If the simulation ended successfully (without deadlock), you may want to add new processes to your deployment file.");
- res = MSG_main();
- xbt_dynar_free(&action_list);
- action_list = xbt_dynar_new(sizeof(xbt_dynar_t), xbt_dynar_free_voidp);
+
+ xbt_dict_foreach(action_queues, cursor, name, todo) {
+ XBT_WARN("Still %lu actions for %s", xbt_dynar_length(todo), name);
+ }
+ }
+
+ free(action_line);
+ if (path)
+ fclose(action_fp);
+ xbt_dict_free(&action_queues);
+ action_queues = xbt_dict_new_homogeneous(NULL);
return res;
}