1 /* Copyright (c) 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "surf_private.h"
8 #include "surf/random_mgr.h"
13 typedef struct surf_action_network_Constant {
14 s_surf_action_t generic_action;
18 } s_surf_action_network_Constant_t, *surf_action_network_Constant_t;
20 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
21 static random_data_t random_latency = NULL;
22 static int host_number_int = 0;
24 static void netcste_count_hosts(void)
29 static void netcste_define_callbacks(const char *file)
31 surfxml_add_callback(STag_surfxml_host_cb_list, &netcste_count_hosts);
34 static int netcste_resource_used(void *resource_id)
39 static int netcste_action_unref(surf_action_t action)
42 if (!action->refcount) {
43 xbt_swag_remove(action, action->state_set);
50 static void netcste_action_cancel(surf_action_t action)
55 static double netcste_share_resources(double now)
57 surf_action_network_Constant_t action = NULL;
58 xbt_swag_t running_actions =
59 surf_network_model->states.running_action_set;
62 xbt_swag_foreach(action, running_actions) {
63 if (action->latency > 0) {
65 min = action->latency;
66 else if (action->latency < min)
67 min = action->latency;
74 static void netcste_update_actions_state(double now, double delta)
76 surf_action_network_Constant_t action = NULL;
77 surf_action_network_Constant_t next_action = NULL;
78 xbt_swag_t running_actions =
79 surf_network_model->states.running_action_set;
81 xbt_swag_foreach_safe(action, next_action, running_actions) {
82 if (action->latency > 0) {
83 if (action->latency > delta) {
84 double_update(&(action->latency), delta);
86 action->latency = 0.0;
89 double_update(&(action->generic_action.remains),
90 action->generic_action.cost * delta / action->lat_init);
91 if (action->generic_action.max_duration != NO_MAX_DURATION)
92 double_update(&(action->generic_action.max_duration), delta);
94 if (action->generic_action.remains <= 0) {
95 action->generic_action.finish = surf_get_clock();
96 surf_network_model->action_state_set((surf_action_t) action,
98 } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
99 && (action->generic_action.max_duration <= 0)) {
100 action->generic_action.finish = surf_get_clock();
101 surf_network_model->action_state_set((surf_action_t) action,
107 static void netcste_update_resource_state(void *id,
108 tmgr_trace_event_t event_type,
109 double value, double time)
114 static surf_action_t netcste_communicate(const char *src_name,
115 const char *dst_name, double size,
118 surf_action_network_Constant_t action = NULL;
120 XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
123 surf_action_new(sizeof(s_surf_action_network_Constant_t), size,
124 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 netcste_get_route(void *src, void *dst)
145 xbt_die("Calling this function does not make any sense");
148 static double netcste_get_link_bandwidth(const void *link)
153 static double netcste_get_link_latency(const void *link)
158 static int link_shared(const void *link)
163 static void netcste_action_suspend(surf_action_t action)
165 ((surf_action_network_Constant_t) action)->suspended = 1;
168 static void netcste_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 netcste_action_is_suspended(surf_action_t action)
176 return ((surf_action_network_Constant_t) action)->suspended;
179 static void netcste_finalize(void)
181 surf_model_exit(surf_network_model);
182 surf_network_model = NULL;
187 void surf_network_model_init_Constant(const char *filename)
189 xbt_assert(surf_network_model == NULL);
190 if (surf_network_model)
192 surf_network_model = surf_model_init();
194 surf_network_model->name = "constant time network";
195 surf_network_model->action_unref = netcste_action_unref;
196 surf_network_model->action_cancel = netcste_action_cancel;
197 surf_network_model->action_recycle = net_action_recycle;
198 surf_network_model->get_remains = net_action_get_remains;
199 #ifdef HAVE_LATENCY_BOUND_TRACKING
200 surf_network_model->get_latency_limited = net_get_link_latency_limited;
203 surf_network_model->model_private->resource_used = netcste_resource_used;
204 surf_network_model->model_private->share_resources =
205 netcste_share_resources;
206 surf_network_model->model_private->update_actions_state =
207 netcste_update_actions_state;
208 surf_network_model->model_private->update_resource_state =
209 netcste_update_resource_state;
210 surf_network_model->model_private->finalize = netcste_finalize;
212 surf_network_model->suspend = netcste_action_suspend;
213 surf_network_model->resume = netcste_action_resume;
214 surf_network_model->is_suspended = netcste_action_is_suspended;
215 surf_cpu_model->set_max_duration = net_action_set_max_duration;
217 surf_network_model->extension.network.communicate = netcste_communicate;
218 surf_network_model->extension.network.get_link_bandwidth =
219 netcste_get_link_bandwidth;
220 surf_network_model->extension.network.get_link_latency =
221 netcste_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 netcste_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, netcste_get_link_latency);