3 /* Copyright (c) 2004 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. */
8 #include "surf_private.h"
9 #include "surf/random_mgr.h"
14 typedef struct surf_action_network_Constant {
15 s_surf_action_t generic_action;
19 } s_surf_action_network_Constant_t, *surf_action_network_Constant_t;
21 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
22 static random_data_t random_latency = NULL;
23 static int host_number = 0;
25 static void count_hosts(void)
30 static void define_callbacks(const char *file)
32 /* Figuring out the network links */
33 surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
36 static int resource_used(void *resource_id)
41 static int action_unref(surf_action_t action)
44 if (!action->refcount) {
45 xbt_swag_remove(action, action->state_set);
52 static void action_cancel(surf_action_t action)
57 static void action_recycle(surf_action_t action)
62 static double share_resources(double now)
64 surf_action_network_Constant_t action = NULL;
65 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
68 xbt_swag_foreach(action, running_actions) {
69 if (action->latency > 0) {
71 min = action->latency;
72 else if (action->latency < min)
73 min = action->latency;
80 static void update_actions_state(double now, double delta)
82 surf_action_network_Constant_t action = NULL;
83 surf_action_network_Constant_t next_action = NULL;
84 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
86 xbt_swag_foreach_safe(action, next_action, running_actions) {
87 if (action->latency > 0) {
88 if (action->latency > delta) {
89 double_update(&(action->latency), delta);
91 action->latency = 0.0;
94 double_update(&(action->generic_action.remains),
95 action->generic_action.cost * delta / action->lat_init);
96 if (action->generic_action.max_duration != NO_MAX_DURATION)
97 double_update(&(action->generic_action.max_duration), delta);
99 if (action->generic_action.remains <= 0) {
100 action->generic_action.finish = surf_get_clock();
101 surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
102 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
103 (action->generic_action.max_duration <= 0)) {
104 action->generic_action.finish = surf_get_clock();
105 surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
110 static void update_resource_state(void *id,
111 tmgr_trace_event_t event_type,
112 double value, double time)
117 static surf_action_t communicate(const char *src_name,const char *dst_name,int src, int dst, double size,
120 surf_action_network_Constant_t action = NULL;
122 XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
124 action = surf_action_new(sizeof(s_surf_action_network_Constant_t),size,surf_network_model,0);
126 action->suspended = 0;
128 action->latency = 1;//random_generate(random_latency);
129 action->lat_init = action->latency;
131 if (action->latency <= 0.0) {
132 action->generic_action.state_set =
133 surf_network_model->states.done_action_set;
134 xbt_swag_insert(action, action->generic_action.state_set);
139 return (surf_action_t) action;
142 /* returns an array of link_Constant_t */
143 static xbt_dynar_t get_route(void *src, void *dst)
145 xbt_die("Calling this function does not make any sense");
148 static double get_link_bandwidth(const void *link)
153 static double get_link_latency(const void *link)
158 static int link_shared(const void *link)
163 static void action_suspend(surf_action_t action)
165 ((surf_action_network_Constant_t) action)->suspended = 1;
168 static void action_resume(surf_action_t action)
170 if (((surf_action_network_Constant_t) action)->suspended)
171 ((surf_action_network_Constant_t) action)->suspended = 0;
174 static int action_is_suspended(surf_action_t action)
176 return ((surf_action_network_Constant_t) action)->suspended;
179 static void action_set_max_duration(surf_action_t action, double duration)
181 action->max_duration = duration;
184 static void finalize(void)
186 surf_model_exit(surf_network_model);
187 surf_network_model = NULL;
192 void surf_network_model_init_Constant(const char *filename)
194 xbt_assert(surf_network_model == NULL);
195 if (surf_network_model)
197 surf_network_model = surf_model_init();
200 surf_network_model->name = "constant time network";
201 surf_network_model->action_unref = action_unref;
202 surf_network_model->action_cancel = action_cancel;
203 surf_network_model->action_recycle = action_recycle;
205 surf_network_model->model_private->resource_used = resource_used;
206 surf_network_model->model_private->share_resources = share_resources;
207 surf_network_model->model_private->update_actions_state =
208 update_actions_state;
209 surf_network_model->model_private->update_resource_state =
210 update_resource_state;
211 surf_network_model->model_private->finalize = finalize;
213 surf_network_model->suspend = action_suspend;
214 surf_network_model->resume = action_resume;
215 surf_network_model->is_suspended = action_is_suspended;
216 surf_cpu_model->set_max_duration = action_set_max_duration;
218 surf_network_model->extension.network.communicate = communicate;
219 surf_network_model->extension.network.get_link_bandwidth =
221 surf_network_model->extension.network.get_link_latency = get_link_latency;
222 surf_network_model->extension.network.link_shared = link_shared;
225 random_latency = random_new(RAND, 100, 0.0, 1.0, .125, .034);
226 define_callbacks(filename);
227 xbt_dynar_push(model_list, &surf_network_model);
229 update_model_description(surf_network_model_description,
230 "Constant", surf_network_model);
232 xbt_cfg_set_string(_surf_cfg_set,"routing","none");
233 routing_model_create(sizeof(double),NULL);