/* 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 "simgrid_config.h" /* getline */
#include "msg/private.h"
#include "xbt/str.h"
#include "xbt/dynar.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;
+static xbt_dynar_t action_get_action(char *name);
/** \ingroup msg_actions
* \brief Registers a function to handle a kind of action
* \param name the reference name of the action.
* \param code the 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);
+void MSG_action_register(const char *action_name, msg_action_fun function)
+{
+ xbt_dict_set(action_funs, action_name, function, NULL);
}
+
/** \ingroup msg_actions
* \brief Unregisters a function, which handled a kind of action
*
* \param name the reference name of the action.
*/
-void MSG_action_unregister(const char*action_name) {
- xbt_dict_remove(action_funs,action_name);
+void MSG_action_unregister(const char *action_name)
+{
+ xbt_dict_remove(action_funs, action_name);
}
-static int MSG_action_runner(int argc, char* argv[]) {
- xbt_dynar_t evt;
- unsigned int cursor;
+static int MSG_action_runner(int argc, char *argv[]) {
+ xbt_dynar_t evt=NULL;
+ if (action_fp) { // A unique trace file
+
+ 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);
+ xbt_dynar_free(&evt);
+ }
+ } else { // Should have got my trace file in argument
+ xbt_assert0(argc>=2,
+ "No simulation-wide trace file provided to MSG_action_trace_run(), "
+ "and no process-wide trace file provided in deployment file. Aborting."
+ );
+
+ char *line = NULL;
+ size_t line_len = 0;
+ FILE *fp = fopen(argv[1], "r");
+ xbt_assert2(fp != NULL, "Cannot open %s: %s", argv[1], strerror(errno));
- xbt_dynar_foreach(action_list,cursor,evt) {
- if (!strcmp(xbt_dynar_get_as(evt,0,char*),argv[0])) {
- msg_action_fun function = xbt_dict_get(action_funs,xbt_dynar_get_as(evt,1,char*));
- (*function)(evt);
- }
- }
+ ssize_t read;
+ // Read lines and execute them until I reach the end of file
+ while ((read = getline(&line, &line_len, fp)) != -1) {
+ // cleanup and split the string I just read
+ 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);
+
+ char *evtname = xbt_dynar_get_as(evt, 0, char *);
+ if (!strcmp(argv[0],evtname)) {
+ msg_action_fun function =
+ xbt_dict_get(action_funs, xbt_dynar_get_as(evt, 1, char *));
+ (*function) (evt);
+ } else {
+ WARN1("Ignore trace element not for me: %s",xbt_str_join(evt," "));
+ }
+ xbt_dynar_free(&evt);
+ }
- return 0;
+ }
+ return 0;
}
-void _MSG_action_init() {
- action_funs = xbt_dict_new();
- action_list = xbt_dynar_new(sizeof(xbt_dynar_t),xbt_dynar_free_voidp);
- MSG_function_register_default(MSG_action_runner);
+void _MSG_action_init()
+{
+ action_funs = xbt_dict_new();
+ action_queues = xbt_dict_new();
+ MSG_function_register_default(MSG_action_runner);
}
-/** \ingroup msg_actions
- * \brief A trace loader
- *
- * Load a trace file containing actions, and execute them.
- */
-MSG_error_t MSG_action_trace_run(char*path) {
- MSG_error_t res;
+void _MSG_action_exit() {
+ xbt_dict_free(&action_queues);
+ xbt_dict_free(&action_funs);
+}
- FILE * fp;
- char * line = NULL;
- size_t len = 0;
- ssize_t read;
- xbt_dynar_t evt;
+static xbt_dynar_t action_get_action(char *name) {
+ ssize_t read;
+ xbt_dynar_t evt=NULL;
+
- fp = fopen(path, "r");
- xbt_assert2(fp != NULL,"Cannot open %s: %s",path,strerror(errno));
+ xbt_dynar_t myqueue = xbt_dict_get_or_null(action_queues,name);
+ if (myqueue==NULL || xbt_dynar_length(myqueue)==0) { // nothing stored for me. Read the file further
- 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);
+ if (action_fp==NULL) { // File closed now. There's nothing more to read. I'm out of here
+ goto todo_done;
}
- if (line)
- free(line);
- fclose(fp);
+ // Read lines until I reach something for me (which breaks in loop body)
+ // or end of file reached
+ while ((read = 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;
+ evt = xbt_str_split_quoted(action_line);
+
+ // if it's for me, I'm done
+ char *evtname = xbt_dynar_get_as(evt, 0, char *);
+ if (!strcmp(name,evtname)) {
+ return 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 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_actions
+ * \brief A trace loader
+ *
+ * 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;
+
+ if (path) {
+ action_fp = fopen(path, "r");
+ xbt_assert2(action_fp != NULL, "Cannot open %s: %s", path, strerror(errno));
+ }
+ res = MSG_main();
+
+ if (xbt_dict_size(action_queues)) {
+ WARN0("Not all actions got consumed. If the simulation ended successfully (without deadlock), you may want to add new processes to your deployment file.");
+ xbt_dict_cursor_t cursor;
+ char *name;
+ xbt_dynar_t todo;
+
+ xbt_dict_foreach(action_queues,cursor,name,todo) {
+ WARN2("Still %lu actions for %s",xbt_dynar_length(todo),name);
+ }
+ }
- res = MSG_main();
- xbt_dynar_free(&action_list);
- action_list = xbt_dynar_new(sizeof(xbt_dynar_t),xbt_dynar_free_voidp);
+ if (action_line)
+ free(action_line);
+ if (path)
+ fclose(action_fp);
+ xbt_dict_free(&action_queues);
+ action_queues = xbt_dict_new();
- return res;
+ return res;
}
