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_cpy(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 found = (dependency->dst == dst);
163 xbt_assert2(!found, "A dependency already exists between task '%s' and task '%s'", src->sd_data->name, dst->sd_data->name);
165 dependency = xbt_new0(s_SD_dependency_t, 1);
168 dependency->name = xbt_strdup(name);
169 dependency->data = data;
170 dependency->src = src;
171 dependency->dst = dst;
173 /* src must be executed before dst */
174 xbt_dynar_push(src->sd_data->tasks_after, &dependency);
175 xbt_dynar_push(dst->sd_data->tasks_before, &dependency);
177 /* __SD_print_dependencies(src);
178 __SD_print_dependencies(dst); */
181 /* Removes a dependency between two tasks.
183 void SD_task_dependency_remove(SD_task_t src, SD_task_t dst) {
184 SD_CHECK_INIT_DONE();
185 xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
186 xbt_assert1(src != dst, "Cannot remove a dependency between task '%s' and itself", SD_task_get_name(src));
188 xbt_dynar_t dynar = src->sd_data->tasks_after;
189 int length = xbt_dynar_length(dynar);
192 SD_dependency_t dependency;
193 for (i = 0; i < length && !found; i++) {
194 xbt_dynar_get_cpy(dynar, i, &dependency);
195 if (dependency->dst == dst) {
196 xbt_dynar_remove_at(dynar, i, NULL);
200 xbt_assert4(found, "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
201 src->sd_data->name, dst->sd_data->name, dst->sd_data->name, src->sd_data->name);
203 dynar = dst->sd_data->tasks_before;
204 length = xbt_dynar_length(dynar);
207 for (i = 0; i < length && !found; i++) {
208 xbt_dynar_get_cpy(dynar, i, &dependency);
209 if (dependency->src == src) {
210 xbt_dynar_remove_at(dynar, i, NULL);
211 __SD_task_destroy_dependency(dependency);
215 xbt_assert4(found, "SimDag error: task '%s' is a successor of '%s' but task '%s' is not a predecessor of task '%s'",
216 dst->sd_data->name, src->sd_data->name, src->sd_data->name, dst->sd_data->name); /* should never happen... */
218 /* __SD_print_dependencies(src);
219 __SD_print_dependencies(dst); */
222 /* Returns the data associated to a dependency between two tasks. This data can be NULL.
224 void *SD_task_dependency_get_data(SD_task_t src, SD_task_t dst) {
225 SD_CHECK_INIT_DONE();
226 xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
227 xbt_assert1(src != dst, "Cannot have a dependency between task '%s' and itself", SD_task_get_name(src));
229 xbt_dynar_t dynar = src->sd_data->tasks_after;
230 int length = xbt_dynar_length(dynar);
233 SD_dependency_t dependency;
234 for (i = 0; i < length && !found; i++) {
235 xbt_dynar_get_cpy(dynar, i, &dependency);
236 found = (dependency->dst == dst);
238 xbt_assert4(found, "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
239 src->sd_data->name, dst->sd_data->name, dst->sd_data->name, src->sd_data->name);
240 return dependency->data;
243 /* Returns the state of a task: SD_NOT_SCHEDULED, SD_SCHEDULED, SD_RUNNING, SD_DONE or SD_FAILED.
245 SD_task_state_t SD_task_get_state(SD_task_t task) {
246 SD_CHECK_INIT_DONE();
247 xbt_assert0(task != NULL, "Invalid parameter");
248 return task->sd_data->state;
251 /* temporary function for debugging */
252 void __SD_print_watch_points(SD_task_t task) {
253 static const int state_masks[] = {SD_SCHEDULED, SD_RUNNING, SD_DONE, SD_FAILED};
254 static const char* state_names[] = {"scheduled", "running", "done", "failed"};
256 printf("Task '%s' watch points (%x): ", task->sd_data->name, task->sd_data->watch_points);
259 for (i = 0; i < 4; i++) {
260 if (task->sd_data->watch_points & state_masks[i])
261 printf("%s ", state_names[i]);
266 /* Adds a watch point to a task.
267 SD_simulate will stop as soon as the state of this task is the one given in argument.
268 Watch point is then automatically removed.
270 void SD_task_watch(SD_task_t task, SD_task_state_t state) {
271 SD_CHECK_INIT_DONE();
272 xbt_assert0(task != NULL, "Invalid parameter");
274 task->sd_data->watch_points = task->sd_data->watch_points | state;
275 __SD_print_watch_points(task);
278 /* Removes a watch point from a task.
280 void SD_task_unwatch(SD_task_t task, SD_task_state_t state) {
281 SD_CHECK_INIT_DONE();
282 xbt_assert0(task != NULL, "Invalid parameter");
284 task->sd_data->watch_points = task->sd_data->watch_points & ~state;
285 __SD_print_watch_points(task);
288 /* Unschedules a task. The state must be SD_SCHEDULED, SD_RUNNING or SD_FAILED.
289 * The task is reinitialised and its state becomes SD_NOT_SCHEDULED.
290 * Call SD_task_schedule to schedule it again.
292 void SD_task_unschedule(SD_task_t task) {
293 SD_CHECK_INIT_DONE();
294 xbt_assert0(task != NULL, "Invalid parameter");
295 xbt_assert1(task->sd_data->state == SD_SCHEDULED ||
296 task->sd_data->state == SD_RUNNING ||
297 task->sd_data->state == SD_FAILED,
298 "Task %s: the state must be SD_SCHEDULED, SD_RUNNING or SD_FAILED", task->sd_data->name);
300 if (task->sd_data->state == SD_SCHEDULED)
301 __SD_task_destroy_scheduling_data(task);
303 task->sd_data->state = SD_NOT_SCHEDULED;
306 /* Runs a task. This function is called by SD_simulate when a scheduled task can start
307 * (ie when its dependencies are satisfied).
309 void __SD_task_run(SD_task_t task) {
310 SD_CHECK_INIT_DONE();
311 xbt_assert0(task != NULL, "Invalid parameter");
313 SD_task_data_t sd_data = task->sd_data;
314 surf_workstation_resource->extension_public->
315 execute_parallel_task(sd_data->workstation_nb,
316 sd_data->workstation_list,
317 sd_data->computation_amount,
318 sd_data->communication_amount,
321 task->sd_data->state = SD_RUNNING;
323 __SD_task_destroy_scheduling_data(task); /* now the scheduling data are not useful anymore */
327 /* Destroys a task. The user data (if any) should have been destroyed first.
329 void SD_task_destroy(SD_task_t task) {
330 SD_CHECK_INIT_DONE();
331 xbt_assert0(task != NULL, "Invalid parameter");
333 /* printf("Destroying task %s...\n", SD_task_get_name(task));*/
335 /* we must destroy the dependencies carefuly (with SD_dependency_remove)
336 because each one is stored twice */
337 SD_dependency_t dependency;
338 while (xbt_dynar_length(task->sd_data->tasks_before) > 0) {
339 xbt_dynar_get_cpy(task->sd_data->tasks_before, 0, &dependency);
340 SD_task_dependency_remove(dependency->src, dependency->dst);
343 while (xbt_dynar_length(task->sd_data->tasks_after) > 0) {
344 xbt_dynar_get_cpy(task->sd_data->tasks_after, 0, &dependency);
345 SD_task_dependency_remove(dependency->src, dependency->dst);
348 if (task->sd_data->state == SD_SCHEDULED)
349 __SD_task_destroy_scheduling_data(task);
351 if (task->sd_data->name != NULL)
352 xbt_free(task->sd_data->name);
354 xbt_dynar_free(&task->sd_data->tasks_before);
355 xbt_dynar_free(&task->sd_data->tasks_after);
356 xbt_free(task->sd_data);
359 /*printf("Task destroyed.\n");*/
363 /* Destroys the data memorised by SD_task_schedule. Task state must be SD_SCHEDULED.
365 void __SD_task_destroy_scheduling_data(SD_task_t task) {
366 xbt_free(task->sd_data->workstation_list);
367 xbt_free(task->sd_data->computation_amount);
368 xbt_free(task->sd_data->communication_amount);
371 /* Destroys a dependency between two tasks.
373 void __SD_task_destroy_dependency(void *dependency) {
374 if (((SD_dependency_t) dependency)->name != NULL)
375 xbt_free(((SD_dependency_t) dependency)->name);
376 /*printf("destroying dependency between %s and %s\n", ((SD_dependency_t) dependency)->src->sd_data->name, ((SD_dependency_t) dependency)->dst->sd_data->name);*/
377 xbt_free(dependency);
378 /*printf("destroyed.\n");*/