2 #include "simdag/simdag.h"
3 #include "xbt/sysdep.h"
8 SD_task_t SD_task_create(const char *name, void *data, double amount) {
10 xbt_assert0(amount > 0, "amount must be positive");
12 SD_task_data_t sd_data = xbt_new0(s_SD_task_data_t, 1); /* task private data */
14 /* general information */
16 sd_data->name = xbt_strdup(name);
20 sd_data->state = SD_NOT_SCHEDULED;
21 sd_data->amount = amount;
22 sd_data->surf_action = NULL;
23 sd_data->watch_points = 0;
26 sd_data->tasks_before = xbt_dynar_new(sizeof(SD_dependency_t), NULL);
27 sd_data->tasks_after = xbt_dynar_new(sizeof(SD_dependency_t), NULL);
29 /* scheduling parameters */
30 sd_data->workstation_nb = 0;
31 sd_data->workstation_list = NULL;
32 sd_data->computation_amount = NULL;
33 sd_data->communication_amount = NULL;
36 SD_task_t task = xbt_new0(s_SD_task_t, 1);
37 task->sd_data = sd_data; /* private data */
38 task->data = data; /* user data */
44 * task: the task to schedule
45 * workstation_nb: number of workstations where the task will be executed
46 * workstation_list: workstations where the task will be executed
47 * computation_amount: computation amount for each workstation
48 * communication_amount: communication amount between each pair of workstations
49 * rate: task execution speed rate
51 void SD_task_schedule(SD_task_t task, int workstation_nb,
52 const SD_workstation_t *workstation_list, double *computation_amount,
53 double *communication_amount, double rate) {
55 xbt_assert0(task, "Invalid parameter");
56 xbt_assert1(SD_task_get_state(task) == SD_NOT_SCHEDULED, "Task '%s' has already been scheduled.", SD_task_get_name(task));
57 xbt_assert0(workstation_nb > 0, "workstation_nb must be positive");
59 SD_task_data_t sd_data = task->sd_data;
60 sd_data->workstation_nb = workstation_nb;
63 sd_data->computation_amount = xbt_new0(double, workstation_nb);
64 memcpy(sd_data->computation_amount, computation_amount, sizeof(double) * workstation_nb);
66 int communication_nb = workstation_nb * workstation_nb;
67 sd_data->communication_amount = xbt_new0(double, communication_nb);
68 memcpy(sd_data->communication_amount, communication_amount, sizeof(double) * communication_nb);
70 /* we have to create a Surf workstation array instead of the SimDag workstation array */
71 sd_data->workstation_list = xbt_new0(void*, workstation_nb);
73 for (i = 0; i < workstation_nb; i++) {
74 sd_data->workstation_list[i] = workstation_list[i]->sd_data->surf_workstation;
77 sd_data->state = SD_SCHEDULED;
80 /* Returns the data of a task.
82 void* SD_task_get_data(SD_task_t task) {
84 xbt_assert0(task != NULL, "Invalid parameter");
88 /* Sets the data of a task.
90 void SD_task_set_data(SD_task_t task, void *data) {
92 xbt_assert0(task != NULL, "Invalid parameter");
96 /* Returns the name of a task. The name can be NULL.
98 const char* SD_task_get_name(SD_task_t task) {
100 xbt_assert0(task != NULL, "Invalid parameter");
101 return task->sd_data->name;
104 /* Returns the computing amount of a task.
106 double SD_task_get_amount(SD_task_t task) {
107 SD_CHECK_INIT_DONE();
108 xbt_assert0(task != NULL, "Invalid parameter");
109 return task->sd_data->amount;
112 /* Returns the remaining computing amount of a task.
114 double SD_task_get_remaining_amount(SD_task_t task) {
115 SD_CHECK_INIT_DONE();
116 xbt_assert0(task != NULL, "Invalid parameter");
117 SD_task_data_t sd_data = task->sd_data;
118 if (sd_data->surf_action)
119 return sd_data->amount;
121 return sd_data->surf_action->remains;
124 /* temporary function for debbuging */
125 void __SD_print_dependencies(SD_task_t task) {
126 printf("The following tasks must be executed before %s:", SD_task_get_name(task));
127 xbt_dynar_t dynar = task->sd_data->tasks_before;
128 int length = xbt_dynar_length(dynar);
130 SD_dependency_t dependency;
131 for (i = 0; i < length; i++) {
132 xbt_dynar_get_cpy(dynar, i, &dependency);
133 printf(" %s", SD_task_get_name(dependency->src));
136 printf("\nThe following tasks must be executed after %s:", SD_task_get_name(task));
138 dynar = task->sd_data->tasks_after;
139 length = xbt_dynar_length(dynar);
140 for (i = 0; i < length; i++) {
141 xbt_dynar_get_ptr(dynar, i, &dependency);
142 printf(" %s", SD_task_get_name(dependency->dst));
144 printf("\n----------------------------\n");
147 /* Adds a dependency between two tasks.
149 void SD_task_dependency_add(const char *name, void *data, SD_task_t src, SD_task_t dst) {
150 SD_CHECK_INIT_DONE();
151 xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
152 xbt_assert1(src != dst, "Cannot add a dependency between task '%s' and itself", SD_task_get_name(src));
154 xbt_dynar_t dynar = src->sd_data->tasks_after;
155 int length = xbt_dynar_length(dynar);
158 SD_dependency_t dependency;
159 for (i = 0; i < length && !found; i++) {
160 xbt_dynar_get_cpy(dynar, i, &dependency);
161 if (dependency->src == src && dependency->dst == dst) {
165 xbt_assert2(!found, "A dependency already exists between task '%s' and task '%s'", src->sd_data->name, dst->sd_data->name);
167 dependency = xbt_new0(s_SD_dependency_t, 1);
170 dependency->name = xbt_strdup(name);
171 dependency->data = data;
172 dependency->src = src;
173 dependency->dst = dst;
175 /* src must be executed before dst */
176 xbt_dynar_push(src->sd_data->tasks_after, &dependency);
177 xbt_dynar_push(dst->sd_data->tasks_before, &dependency);
179 /* __SD_print_dependencies(src);
180 __SD_print_dependencies(dst);*/
183 /* Removes a dependency between two tasks.
185 void SD_task_dependency_remove(SD_task_t src, SD_task_t dst) {
186 SD_CHECK_INIT_DONE();
187 xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
188 xbt_assert1(src != dst, "Cannot remove a dependency between task '%s' and itself", SD_task_get_name(src));
190 xbt_dynar_t dynar = src->sd_data->tasks_after;
191 int length = xbt_dynar_length(dynar);
194 SD_dependency_t dependency;
195 for (i = 0; i < length && !found; i++) {
196 xbt_dynar_get_cpy(dynar, i, &dependency);
197 if (dependency->src == src && dependency->dst == dst) {
198 xbt_dynar_remove_at(dynar, i, NULL);
202 xbt_assert4(found, "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
203 src->sd_data->name, dst->sd_data->name, dst->sd_data->name, src->sd_data->name);
205 dynar = dst->sd_data->tasks_before;
206 length = xbt_dynar_length(dynar);
209 for (i = 0; i < length && !found; i++) {
210 xbt_dynar_get_cpy(dynar, i, &dependency);
211 if (dependency->src == src && dependency->dst == dst) {
212 xbt_dynar_remove_at(dynar, i, NULL);
213 __SD_task_destroy_dependency(dependency);
217 xbt_assert4(found, "SimDag error: task '%s' is a successor of '%s' but task '%s' is not a predecessor of task '%s'",
218 dst->sd_data->name, src->sd_data->name, src->sd_data->name, dst->sd_data->name); /* should never happen... */
220 /* __SD_print_dependencies(src);
221 __SD_print_dependencies(dst);*/
224 /* Returns the state of a task: SD_NOT_SCHEDULED, SD_SCHEDULED, SD_RUNNING, SD_DONE or SD_FAILED.
226 SD_task_state_t SD_task_get_state(SD_task_t task) {
227 SD_CHECK_INIT_DONE();
228 xbt_assert0(task != NULL, "Invalid parameter");
229 return task->sd_data->state;
232 /* temporary function for debugging */
233 void __SD_print_watch_points(SD_task_t task) {
234 static const int state_masks[] = {SD_SCHEDULED, SD_RUNNING, SD_DONE, SD_FAILED};
235 static const char* state_names[] = {"scheduled", "running", "done", "failed"};
237 printf("Task '%s' watch points (%x): ", task->sd_data->name, task->sd_data->watch_points);
240 for (i = 0; i < 4; i++) {
241 if (task->sd_data->watch_points & state_masks[i])
242 printf("%s ", state_names[i]);
247 /* Adds a watch point to a task.
248 SD_simulate will stop as soon as the state of this task is the one given in argument.
249 Watch point is then automatically removed.
251 void SD_task_watch(SD_task_t task, SD_task_state_t state) {
252 SD_CHECK_INIT_DONE();
253 xbt_assert0(task != NULL, "Invalid parameter");
255 task->sd_data->watch_points = task->sd_data->watch_points | state;
256 __SD_print_watch_points(task);
259 /* Removes a watch point from a task.
261 void SD_task_unwatch(SD_task_t task, SD_task_state_t state) {
262 SD_CHECK_INIT_DONE();
263 xbt_assert0(task != NULL, "Invalid parameter");
265 task->sd_data->watch_points = task->sd_data->watch_points & ~state;
266 __SD_print_watch_points(task);
269 /* Unschedules a task. The state must be SD_SCHEDULED, SD_RUNNING or SD_FAILED.
270 * The task is reinitialised and its state becomes SD_NOT_SCHEDULED.
271 * Call SD_task_schedule to schedule it again.
273 void SD_task_unschedule(SD_task_t task) {
274 SD_CHECK_INIT_DONE();
275 xbt_assert0(task != NULL, "Invalid parameter");
276 xbt_assert1(task->sd_data->state == SD_SCHEDULED ||
277 task->sd_data->state == SD_RUNNING ||
278 task->sd_data->state == SD_FAILED,
279 "Task %s: the state must be SD_SCHEDULED, SD_RUNNING or SD_FAILED", task->sd_data->name);
281 if (task->sd_data->state == SD_SCHEDULED)
282 __SD_task_destroy_scheduling_data(task);
284 task->sd_data->state = SD_NOT_SCHEDULED;
287 /* Runs a task. This function is called by SD_simulate when a scheduled task can start
288 * (ie when its dependencies are satisfied).
290 void __SD_task_run(SD_task_t task) {
291 SD_CHECK_INIT_DONE();
292 xbt_assert0(task != NULL, "Invalid parameter");
294 SD_task_data_t sd_data = task->sd_data;
295 surf_workstation_resource->extension_public->
296 execute_parallel_task(sd_data->workstation_nb,
297 sd_data->workstation_list,
298 sd_data->computation_amount,
299 sd_data->communication_amount,
302 task->sd_data->state = SD_RUNNING;
304 __SD_task_destroy_scheduling_data(task); /* now the scheduling data are not useful anymore */
308 /* Destroys a task. The user data (if any) should have been destroyed first.
310 void SD_task_destroy(SD_task_t task) {
311 SD_CHECK_INIT_DONE();
312 xbt_assert0(task != NULL, "Invalid parameter");
314 /* printf("Destroying task %s...\n", SD_task_get_name(task));*/
316 /* we must destroy the dependencies carefuly (with SD_dependency_remove)
317 because each one is stored twice */
318 SD_dependency_t dependency;
319 while (xbt_dynar_length(task->sd_data->tasks_before) > 0) {
320 xbt_dynar_get_cpy(task->sd_data->tasks_before, 0, &dependency);
321 SD_task_dependency_remove(dependency->src, dependency->dst);
324 while (xbt_dynar_length(task->sd_data->tasks_after) > 0) {
325 xbt_dynar_get_cpy(task->sd_data->tasks_after, 0, &dependency);
326 SD_task_dependency_remove(dependency->src, dependency->dst);
329 if (task->sd_data->state == SD_SCHEDULED)
330 __SD_task_destroy_scheduling_data(task);
332 if (task->sd_data->name != NULL)
333 xbt_free(task->sd_data->name);
335 xbt_dynar_free(&task->sd_data->tasks_before);
336 xbt_dynar_free(&task->sd_data->tasks_after);
337 xbt_free(task->sd_data);
340 /*printf("Task destroyed.\n");*/
344 /* Destroys the data memorised by SD_task_schedule. Task state must be SD_SCHEDULED.
346 void __SD_task_destroy_scheduling_data(SD_task_t task) {
347 xbt_free(task->sd_data->workstation_list);
348 xbt_free(task->sd_data->computation_amount);
349 xbt_free(task->sd_data->communication_amount);
352 /* Destroys a dependency between two tasks.
354 void __SD_task_destroy_dependency(void *dependency) {
355 if (((SD_dependency_t) dependency)->name != NULL)
356 xbt_free(((SD_dependency_t) dependency)->name);
357 /*printf("destroying dependency between %s and %s\n", ((SD_dependency_t) dependency)->src->sd_data->name, ((SD_dependency_t) dependency)->dst->sd_data->name);*/
358 xbt_free(dependency);
359 /*printf("destroyed.\n");*/