2 #include "simdag/simdag.h"
3 #include "xbt/sysdep.h"
7 SD_task_t SD_task_create(const char *name, void *data, double amount) {
9 xbt_assert0(amount > 0, "amount must be positive");
11 SD_task_data_t sd_data = xbt_new0(s_SD_task_data_t, 1); /* task private data */
13 /* general information */
15 sd_data->name = xbt_strdup(name);
19 sd_data->state = SD_NOT_SCHEDULED;
20 sd_data->amount = amount;
21 sd_data->surf_action = NULL;
22 sd_data->watch_points = 0;
25 sd_data->tasks_before = xbt_dynar_new(sizeof(SD_task_t), NULL);
26 sd_data->tasks_after = xbt_dynar_new(sizeof(SD_task_t), NULL);
28 /* scheduling parameters */
29 sd_data->workstation_nb = 0;
30 sd_data->workstation_list = NULL;
31 sd_data->computation_amount = NULL;
32 sd_data->communication_amount = NULL;
35 SD_task_t task = xbt_new0(s_SD_task_t, 1);
36 task->sd_data = sd_data; /* private data */
37 task->data = data; /* user data */
43 * task: the task to schedule
44 * workstation_nb: number of workstations where the task will be executed
45 * workstation_list: workstations where the task will be executed
46 * computation_amount: computation amount for each workstation
47 * communication_amount: communication amount between each pair of workstations
48 * rate: task execution speed rate
50 void SD_task_schedule(SD_task_t task, int workstation_nb,
51 const SD_workstation_t *workstation_list, double *computation_amount,
52 double *communication_amount, double rate) {
54 xbt_assert0(task, "Invalid parameter");
55 xbt_assert0(SD_task_get_state(task) == SD_NOT_SCHEDULED, "This task has already been scheduled.");
56 xbt_assert0(workstation_nb > 0, "workstation_nb must be positive");
58 SD_task_data_t sd_data = task->sd_data;
59 sd_data->workstation_nb = workstation_nb;
62 sd_data->computation_amount = xbt_new0(double, workstation_nb);
63 memcpy(sd_data->computation_amount, computation_amount, sizeof(double) * workstation_nb);
65 int communication_nb = workstation_nb * workstation_nb;
66 sd_data->communication_amount = xbt_new0(double, communication_nb);
67 memcpy(sd_data->communication_amount, communication_amount, sizeof(double) * communication_nb);
69 /* we have to create a Surf workstation array instead of the SimDag workstation array */
70 sd_data->workstation_list = xbt_new0(void*, workstation_nb);
72 for (i = 0; i < workstation_nb; i++) {
73 sd_data->workstation_list[i] = workstation_list[i]->sd_data->surf_workstation;
76 sd_data->state = SD_SCHEDULED;
79 /* Returns the data of a task.
81 void* SD_task_get_data(SD_task_t task) {
83 xbt_assert0(task, "Invalid parameter");
87 /* Sets the data of a task.
89 void SD_task_set_data(SD_task_t task, void *data) {
91 xbt_assert0(task, "Invalid parameter");
95 /* Returns the name of a task. The name can be NULL.
97 const char* SD_task_get_name(SD_task_t task) {
99 xbt_assert0(task, "Invalid parameter");
100 return task->sd_data->name;
103 /* Returns the computing amount of a task.
105 double SD_task_get_amount(SD_task_t task) {
106 SD_CHECK_INIT_DONE();
107 xbt_assert0(task, "Invalid parameter");
108 return task->sd_data->amount;
111 /* Returns the remaining computing amount of a task.
113 double SD_task_get_remaining_amount(SD_task_t task) {
114 SD_CHECK_INIT_DONE();
115 xbt_assert0(task, "Invalid parameter");
116 SD_task_data_t sd_data = task->sd_data;
117 if (sd_data->surf_action)
118 return sd_data->amount;
120 return sd_data->surf_action->remains;
123 /* Adds a dependency between two tasks.
125 void SD_task_dependency_add(const char *name, void *data, SD_task_t src, SD_task_t dst) {
126 SD_CHECK_INIT_DONE();
127 xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
131 /* Removes a dependency between two tasks.
133 void SD_task_dependency_remove(SD_task_t src, SD_task_t dst) {
134 SD_CHECK_INIT_DONE();
135 xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
139 /* Returns the state of a task: SD_NOT_SCHEDULED, SD_SCHEDULED, SD_RUNNING, SD_DONE or SD_FAILED.
141 SD_task_state_t SD_task_get_state(SD_task_t task) {
142 SD_CHECK_INIT_DONE();
143 xbt_assert0(task, "Invalid parameter");
144 return task->sd_data->state;
147 /* temporary function for debugging */
148 void __SD_print_watch_points(SD_task_t task) {
149 static const int state_masks[] = {SD_SCHEDULED, SD_RUNNING, SD_DONE, SD_FAILED};
150 static const char* state_names[] = {"scheduled", "running", "done", "failed"};
152 printf("Task '%s' watch points (%x): ", task->sd_data->name, task->sd_data->watch_points);
155 for (i = 0; i < 4; i++) {
156 if (task->sd_data->watch_points & state_masks[i])
157 printf("%s ", state_names[i]);
162 /* Adds a watch point to a task.
163 SD_simulate will stop as soon as the state of this task is the one given in argument.
164 Watch point is then automatically removed.
166 void SD_task_watch(SD_task_t task, SD_task_state_t state) {
167 SD_CHECK_INIT_DONE();
168 xbt_assert0(task, "Invalid parameter");
170 task->sd_data->watch_points = task->sd_data->watch_points | state;
171 __SD_print_watch_points(task);
174 /* Removes a watch point from a task.
176 void SD_task_unwatch(SD_task_t task, SD_task_state_t state) {
177 SD_CHECK_INIT_DONE();
178 xbt_assert0(task, "Invalid parameter");
180 task->sd_data->watch_points = task->sd_data->watch_points & ~state;
181 __SD_print_watch_points(task);
184 /* Unschedules a task. The state must be SD_SCHEDULED, SD_RUNNING or SD_FAILED.
185 * The task is reinitialised and its state becomes SD_NOT_SCHEDULED.
186 * Call SD_task_schedule to schedule it again.
188 void SD_task_unschedule(SD_task_t task) {
189 SD_CHECK_INIT_DONE();
190 xbt_assert0(task, "Invalid parameter");
191 xbt_assert1(task->sd_data->state == SD_SCHEDULED ||
192 task->sd_data->state == SD_RUNNING ||
193 task->sd_data->state == SD_FAILED,
194 "Task %s: the state must be SD_SCHEDULED, SD_RUNNING or SD_FAILED", task->sd_data->name);
196 if (task->sd_data->state == SD_SCHEDULED)
197 __SD_task_destroy_scheduling_data(task);
199 task->sd_data->state = SD_NOT_SCHEDULED;
202 /* Runs a task. This function is called by SD_simulate when a scheduled task can start
203 * (ie when its dependencies are satisfied).
205 void __SD_task_run(SD_task_t task) {
206 SD_CHECK_INIT_DONE();
207 xbt_assert0(task, "Invalid parameter");
209 SD_task_data_t sd_data = task->sd_data;
210 surf_workstation_resource->extension_public->
211 execute_parallel_task(sd_data->workstation_nb,
212 sd_data->workstation_list,
213 sd_data->computation_amount,
214 sd_data->communication_amount,
217 task->sd_data->state = SD_RUNNING;
219 __SD_task_destroy_scheduling_data(task); /* now the scheduling data are not useful anymore */
223 /* Destroys a task. The user data (if any) should have been destroyed first.
225 void SD_task_destroy(SD_task_t task) {
226 SD_CHECK_INIT_DONE();
227 xbt_assert0(task, "Invalid parameter");
229 if (task->sd_data->state == SD_SCHEDULED)
230 __SD_task_destroy_scheduling_data(task);
232 if (task->sd_data->name != NULL)
233 xbt_free(task->sd_data->name);
235 xbt_dynar_free(&task->sd_data->tasks_before);
236 xbt_dynar_free(&task->sd_data->tasks_after);
237 xbt_free(task->sd_data);
241 /* Destroys the data memorised by SD_task_schedule. Task state must be SD_SCHEDULED.
243 void __SD_task_destroy_scheduling_data(SD_task_t task) {
244 xbt_free(task->sd_data->workstation_list);
245 xbt_free(task->sd_data->computation_amount);
246 xbt_free(task->sd_data->communication_amount);