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 "network_common.h"
10 #include "surf/random_mgr.h"
15 typedef struct surf_action_network_Constant {
16 s_surf_action_t generic_action;
20 } s_surf_action_network_Constant_t, *surf_action_network_Constant_t;
22 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
23 static random_data_t random_latency = NULL;
24 static int card_number = 0;
25 static int host_number = 0;
27 static void count_hosts(void)
32 static void define_callbacks(const char *file)
34 /* Figuring out the network links */
35 surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
38 static int resource_used(void *resource_id)
43 static int action_unref(surf_action_t action)
46 if (!action->refcount) {
47 xbt_swag_remove(action, action->state_set);
54 static void action_cancel(surf_action_t action)
59 static void action_recycle(surf_action_t action)
64 static double share_resources(double now)
66 surf_action_network_Constant_t action = NULL;
67 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
70 xbt_swag_foreach(action, running_actions) {
71 if (action->latency > 0) {
73 min = action->latency;
74 else if (action->latency < min)
75 min = action->latency;
82 static void update_actions_state(double now, double delta)
84 surf_action_network_Constant_t action = NULL;
85 surf_action_network_Constant_t next_action = NULL;
86 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
88 xbt_swag_foreach_safe(action, next_action, running_actions) {
89 if (action->latency > 0) {
90 if (action->latency > delta) {
91 double_update(&(action->latency), delta);
93 action->latency = 0.0;
96 double_update(&(action->generic_action.remains),
97 action->generic_action.cost * delta / action->lat_init);
98 if (action->generic_action.max_duration != NO_MAX_DURATION)
99 double_update(&(action->generic_action.max_duration), delta);
101 if (action->generic_action.remains <= 0) {
102 action->generic_action.finish = surf_get_clock();
103 surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
104 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
105 (action->generic_action.max_duration <= 0)) {
106 action->generic_action.finish = surf_get_clock();
107 surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
112 static void update_resource_state(void *id,
113 tmgr_trace_event_t event_type,
114 double value, double time)
119 static surf_action_t communicate(const char *src_name,const char *dst_name,int src, int dst, double size,
122 surf_action_network_Constant_t action = NULL;
124 XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
126 action = surf_action_new(sizeof(s_surf_action_network_Constant_t),size,surf_network_model,0);
128 action->suspended = 0;
130 action->latency = random_generate(random_latency);
131 action->lat_init = action->latency;
133 if (action->latency <= 0.0) {
134 action->generic_action.state_set =
135 surf_network_model->states.done_action_set;
136 xbt_swag_insert(action, action->generic_action.state_set);
141 return (surf_action_t) action;
144 /* returns an array of link_Constant_t */
145 static xbt_dynar_t get_route(void *src, void *dst)
147 xbt_die("Calling this function does not make any sense");
150 static double get_link_bandwidth(const void *link)
155 static double get_link_latency(const void *link)
160 static int link_shared(const void *link)
165 static void action_suspend(surf_action_t action)
167 ((surf_action_network_Constant_t) action)->suspended = 1;
170 static void action_resume(surf_action_t action)
172 if (((surf_action_network_Constant_t) action)->suspended)
173 ((surf_action_network_Constant_t) action)->suspended = 0;
176 static int action_is_suspended(surf_action_t action)
178 return ((surf_action_network_Constant_t) action)->suspended;
181 static void action_set_max_duration(surf_action_t action, double duration)
183 action->max_duration = duration;
186 static void finalize(void)
188 surf_model_exit(surf_network_model);
189 surf_network_model = NULL;
194 static void surf_network_model_init_internal(void)
196 surf_network_model = surf_model_init();
198 surf_network_model->name = "network constant";
199 surf_network_model->action_unref = action_unref;
200 surf_network_model->action_cancel = action_cancel;
201 surf_network_model->action_recycle = action_recycle;
203 surf_network_model->model_private->resource_used = resource_used;
204 surf_network_model->model_private->share_resources = share_resources;
205 surf_network_model->model_private->update_actions_state =
206 update_actions_state;
207 surf_network_model->model_private->update_resource_state =
208 update_resource_state;
209 surf_network_model->model_private->finalize = finalize;
211 surf_network_model->suspend = action_suspend;
212 surf_network_model->resume = action_resume;
213 surf_network_model->is_suspended = action_is_suspended;
214 surf_cpu_model->set_max_duration = action_set_max_duration;
216 surf_network_model->extension.network.communicate = communicate;
217 surf_network_model->extension.network.get_link_bandwidth =
219 surf_network_model->extension.network.get_link_latency = get_link_latency;
220 surf_network_model->extension.network.link_shared = link_shared;
223 random_latency = random_new(RAND, 100, 0.0, 1.0, .125, .034);
226 void surf_network_model_init_Constant(const char *filename)
229 if (surf_network_model)
231 surf_network_model_init_internal();
232 define_callbacks(filename);
233 xbt_dynar_push(model_list, &surf_network_model);
235 update_model_description(surf_network_model_description,
236 "Constant", surf_network_model);