3 /* Copyright (c) 2005 Arnaud Legrand. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "surf_private.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_timer, surf,
13 "Logging specific to SURF (timer)");
15 typedef struct surf_action_timer {
16 s_surf_action_t generic_action;
17 } s_surf_action_timer_t, *surf_action_timer_t;
19 typedef struct command {
20 s_surf_resource_t generic_resource; /* Must remain first, since we add this to a trace */
23 s_xbt_swag_hookup_t command_set_hookup;
24 surf_action_timer_t action;
25 } s_command_t, *command_t;
28 surf_model_t surf_timer_model = NULL;
29 static tmgr_trace_t empty_trace = NULL;
30 static xbt_swag_t command_pending = NULL;
31 static xbt_swag_t command_to_run = NULL;
32 static xbt_heap_t timer_heap = NULL;
34 static command_t command_new(void *fun, void *args)
36 command_t command = xbt_new0(s_command_t, 1);
38 command->generic_resource.model = surf_timer_model;
39 command->function = fun;
41 xbt_swag_insert(command, command_pending);
43 surf_action_new(sizeof(s_surf_action_timer_t), 0, surf_timer_model, 0);
47 static void command_free(command_t command)
49 if (xbt_swag_belongs(command, command_to_run)) {
50 xbt_swag_remove(command, command_to_run);
51 } else if (xbt_swag_belongs(command, command_pending)) {
52 xbt_swag_remove(command, command_pending);
54 xbt_swag_remove(command->action,
55 surf_timer_model->states.running_action_set);
56 xbt_free(command->action);
57 surf_resource_free((surf_resource_t) command);
61 static void parse_timer(void)
65 static void parse_file(const char *file)
69 static int resource_used(void *resource_id)
74 static void timer_action_state_set(surf_action_t action,
75 e_surf_action_state_t state)
81 static double share_resources(double now)
83 if (xbt_heap_size(timer_heap)) {
84 DEBUG1("Share resoure returning %lf", xbt_heap_maxkey(timer_heap));
85 return (xbt_heap_maxkey(timer_heap));
90 static void update_actions_state(double now, double delta)
92 while ((xbt_heap_size(timer_heap)) > 0
93 && (xbt_heap_maxkey(timer_heap) <= now + delta))
94 xbt_heap_pop(timer_heap);
98 static void update_resource_state(void *id,
99 tmgr_trace_event_t event_type,
100 double value, double date)
102 command_t command = id;
104 /* Move this command to the list of commands to execute */
105 xbt_swag_remove(command, command_pending);
106 xbt_swag_insert(command, command_to_run);
107 tmgr_trace_event_free(event_type);
109 DEBUG1("Insert command on date %lf", date);
114 static void set(double date, void *function, void *arg)
116 command_t command = NULL;
118 command = command_new(function, arg);
120 tmgr_history_add_trace(history, empty_trace, date, 0, command);
121 xbt_heap_push(timer_heap, NULL, date);
123 DEBUG1("Putting value %lf on heap", date);
127 static int get(void **function, void **arg)
129 command_t command = NULL;
131 command = xbt_swag_extract(command_to_run);
133 *function = command->function;
134 *arg = command->args;
135 command_free(command);
142 static void action_suspend(surf_action_t action)
147 static void action_resume(surf_action_t action)
152 static int action_is_suspended(surf_action_t action)
158 static void finalize(void)
160 xbt_heap_free(timer_heap);
163 tmgr_trace_free(empty_trace);
166 xbt_swag_free(command_pending);
167 xbt_swag_free(command_to_run);
169 surf_model_exit(surf_timer_model);
170 surf_timer_model = NULL;
173 static void surf_timer_model_init_internal(void)
175 surf_timer_model = surf_model_init();
177 surf_timer_model->name = "TIMER";
178 surf_timer_model->action_state_set = timer_action_state_set;
180 surf_timer_model->model_private->resource_used = resource_used;
181 surf_timer_model->model_private->share_resources = share_resources;
182 surf_timer_model->model_private->update_actions_state =
183 update_actions_state;
184 surf_timer_model->model_private->update_resource_state =
185 update_resource_state;
186 surf_timer_model->model_private->finalize = finalize;
188 surf_timer_model->suspend = action_suspend;
189 surf_timer_model->resume = action_resume;
190 surf_timer_model->is_suspended = action_is_suspended;
192 surf_timer_model->extension.timer.set = set;
193 surf_timer_model->extension.timer.get = get;
197 command_pending = xbt_swag_new(xbt_swag_offset(var, command_set_hookup));
198 command_to_run = xbt_swag_new(xbt_swag_offset(var, command_set_hookup));
201 empty_trace = tmgr_empty_trace_new();
202 timer_heap = xbt_heap_new(8, NULL);
205 void surf_timer_model_init(const char *filename)
207 if (surf_timer_model)
209 surf_timer_model_init_internal();
210 xbt_dynar_push(model_list, &surf_timer_model);