1 /* Functions related to the java task instances. */
3 /* Copyright (c) 2007, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "smx_context_java.h"
13 #include "jmsg_host.h"
14 #include "jmsg_task.h"
16 #include "jxbt_utilities.h"
19 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
21 static jmethodID jtask_field_Comm_constructor;
23 static jfieldID jtask_field_Task_bind;
24 static jfieldID jtask_field_Comm_bind;
25 static jfieldID jtask_field_Comm_taskBind;
26 static jfieldID jtask_field_Comm_receiving;
28 void jtask_bind(jobject jtask, m_task_t task, JNIEnv * env)
30 (*env)->SetLongField(env, jtask, jtask_field_Task_bind, (jlong) (long) (task));
33 m_task_t jtask_to_native_task(jobject jtask, JNIEnv * env)
35 return (m_task_t) (long) (*env)->GetLongField(env, jtask, jtask_field_Task_bind);
38 jboolean jtask_is_valid(jobject jtask, JNIEnv * env)
40 return (*env)->GetLongField(env, jtask, jtask_field_Task_bind) ? JNI_TRUE : JNI_FALSE;
43 JNIEXPORT void JNICALL
44 Java_org_simgrid_msg_Task_nativeInit(JNIEnv *env, jclass cls) {
45 jclass jtask_class_Comm = (*env)->FindClass(env, "org/simgrid/msg/Comm");
47 jtask_field_Comm_constructor = (*env)->GetMethodID(env, jtask_class_Comm, "<init>", "()V");
48 //FIXME: Don't use jxbt_get_sfield directly, it is slower.
49 jtask_field_Task_bind = jxbt_get_sfield(env, "org/simgrid/msg/Task", "bind", "J");
50 jtask_field_Comm_bind = jxbt_get_sfield(env, "org/simgrid/msg/Comm", "bind", "J");
51 jtask_field_Comm_taskBind = jxbt_get_sfield(env, "org/simgrid/msg/Comm", "taskBind", "J");
52 jtask_field_Comm_receiving = jxbt_get_sfield(env, "org/simgrid/msg/Comm", "receiving", "Z");
53 if (!jtask_field_Task_bind || !jtask_field_Comm_bind || !jtask_field_Comm_taskBind ||
54 !jtask_field_Comm_receiving || !jtask_field_Comm_constructor) {
55 jxbt_throw_native(env,bprintf("Can't find some fields in Java class."));
59 JNIEXPORT void JNICALL
60 Java_org_simgrid_msg_Task_create(JNIEnv * env,
61 jobject jtask, jstring jname,
62 jdouble jcomputeDuration,
65 m_task_t task; /* the native task to create */
66 const char *name = NULL; /* the name of the task */
68 if (jcomputeDuration < 0) {
69 jxbt_throw_illegal(env,
71 ("Task ComputeDuration (%f) cannot be negative",
72 (double) jcomputeDuration));
76 if (jmessageSize < 0) {
77 jxbt_throw_illegal(env,
78 bprintf("Task MessageSize (%f) cannot be negative",
79 (double) jmessageSize));
84 /* get the C string from the java string */
85 name = (*env)->GetStringUTFChars(env, jname, 0);
91 MSG_task_create(name, (double) jcomputeDuration,
92 (double) jmessageSize, NULL);
94 (*env)->ReleaseStringUTFChars(env, jname, name);
96 /* bind & store the task */
97 jtask_bind(jtask, task, env);
98 MSG_task_set_data(task, jtask);
101 JNIEXPORT void JNICALL
102 Java_org_simgrid_msg_Task_parallelCreate(JNIEnv * env,
107 jcomputeDurations_arg,
111 m_task_t task; /* the native parallel task to create */
112 const char *name; /* the name of the task */
115 double *computeDurations;
116 double *messageSizes;
117 jdouble *jcomputeDurations;
118 jdouble *jmessageSizes;
124 if (!jcomputeDurations_arg) {
127 ("Parallel task compute durations cannot be null"));
131 if (!jmessageSizes_arg) {
134 ("Parallel task message sizes cannot be null"));
139 jxbt_throw_null(env, xbt_strdup("Parallel task name cannot be null"));
143 host_count = (int) (*env)->GetArrayLength(env, jhosts);
146 hosts = xbt_new0(m_host_t, host_count);
147 computeDurations = xbt_new0(double, host_count);
148 messageSizes = xbt_new0(double, host_count * host_count);
151 (*env)->GetDoubleArrayElements(env, jcomputeDurations_arg, 0);
153 (*env)->GetDoubleArrayElements(env, jmessageSizes_arg, 0);
155 for (index = 0; index < host_count; index++) {
156 jhost = (*env)->GetObjectArrayElement(env, jhosts, index);
157 hosts[index] = jhost_get_native(env, jhost);
158 computeDurations[index] = jcomputeDurations[index];
160 for (index = 0; index < host_count * host_count; index++) {
161 messageSizes[index] = jmessageSizes[index];
164 (*env)->ReleaseDoubleArrayElements(env, jcomputeDurations_arg,
165 jcomputeDurations, 0);
166 (*env)->ReleaseDoubleArrayElements(env, jmessageSizes_arg, jmessageSizes,
170 /* get the C string from the java string */
171 name = (*env)->GetStringUTFChars(env, jname, 0);
174 MSG_parallel_task_create(name, host_count, hosts, computeDurations,
177 (*env)->ReleaseStringUTFChars(env, jname, name);
179 /* associate the java task object and the native task */
180 jtask_bind(jtask, task, env);
182 MSG_task_set_data(task, (void *) jtask);
184 if (!MSG_task_get_data(task))
185 jxbt_throw_jni(env, "global ref allocation failed");
188 JNIEXPORT void JNICALL
189 Java_org_simgrid_msg_Task_cancel(JNIEnv * env,
192 m_task_t ptask = jtask_to_native_task(jtask, env);
195 jxbt_throw_notbound(env, "task", jtask);
199 MSG_error_t rv = MSG_task_cancel(ptask);
201 jxbt_check_res("MSG_task_cancel()", rv, MSG_OK,
202 bprintf("unexpected error , please report this bug"));
205 JNIEXPORT void JNICALL
206 Java_org_simgrid_msg_Task_execute(JNIEnv * env,
209 m_task_t task = jtask_to_native_task(jtask, env);
212 jxbt_throw_notbound(env, "task", jtask);
216 MSG_error_t rv = MSG_task_execute(task);
218 jxbt_check_res("MSG_task_execute()", rv,
219 MSG_HOST_FAILURE | MSG_TASK_CANCELED,
220 bprintf("while executing task %s",
221 MSG_task_get_name(task)));
224 JNIEXPORT jstring JNICALL
225 Java_org_simgrid_msg_Task_getName(JNIEnv * env,
227 m_task_t task = jtask_to_native_task(jtask, env);
230 jxbt_throw_notbound(env, "task", jtask);
234 return (*env)->NewStringUTF(env, MSG_task_get_name(task));
237 JNIEXPORT jobject JNICALL
238 Java_org_simgrid_msg_Task_getSender(JNIEnv * env,
242 m_task_t task = jtask_to_native_task(jtask, env);
245 jxbt_throw_notbound(env, "task", jtask);
249 process = MSG_task_get_sender(task);
250 if (process == NULL) {
251 jxbt_throw_illegal(env,bprintf("Tried to get the sender of a task that hasn't been sent yet."));
254 return (jobject) native_to_java_process(process);
257 JNIEXPORT jobject JNICALL
258 Java_org_simgrid_msg_Task_getSource(JNIEnv * env,
262 m_task_t task = jtask_to_native_task(jtask, env);
265 jxbt_throw_notbound(env, "task", jtask);
269 host = MSG_task_get_source(task);
271 jxbt_throw_illegal(env,bprintf("Tried to get the source of a task that hasn't been sent yet."));
274 if (!MSG_host_get_data(host)) {
275 jxbt_throw_jni(env, "MSG_task_get_source() failed");
279 return (jobject) MSG_host_get_data(host);
282 JNIEXPORT jdouble JNICALL
283 Java_org_simgrid_msg_Task_getComputeDuration(JNIEnv * env,
286 m_task_t ptask = jtask_to_native_task(jtask, env);
289 jxbt_throw_notbound(env, "task", jtask);
292 return (jdouble) MSG_task_get_compute_duration(ptask);
295 JNIEXPORT jdouble JNICALL
296 Java_org_simgrid_msg_Task_getRemainingDuration(JNIEnv * env, jobject jtask)
298 m_task_t ptask = jtask_to_native_task(jtask, env);
301 jxbt_throw_notbound(env, "task", jtask);
304 return (jdouble) MSG_task_get_remaining_computation(ptask);
307 JNIEXPORT void JNICALL
308 Java_org_simgrid_msg_Task_setPriority(JNIEnv * env,
309 jobject jtask, jdouble priority)
311 m_task_t task = jtask_to_native_task(jtask, env);
314 jxbt_throw_notbound(env, "task", jtask);
317 MSG_task_set_priority(task, (double) priority);
319 JNIEXPORT void JNICALL
320 Java_org_simgrid_msg_Task_send(JNIEnv * env,jobject jtask,
325 const char *alias = (*env)->GetStringUTFChars(env, jalias, 0);
327 m_task_t task = jtask_to_native_task(jtask, env);
331 (*env)->ReleaseStringUTFChars(env, jalias, alias);
332 jxbt_throw_notbound(env, "task", jtask);
336 /* Pass a global ref to the Jtask into the Ctask so that the receiver can use it */
337 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
338 rv = MSG_task_send_with_timeout(task, alias, (double) jtimeout);
340 (*env)->ReleaseStringUTFChars(env, jalias, alias);
342 jxbt_check_res("MSG_task_send_with_timeout()", rv,
343 MSG_HOST_FAILURE | MSG_TRANSFER_FAILURE | MSG_TIMEOUT,
344 bprintf("while sending task %s to mailbox %s",
345 MSG_task_get_name(task), alias));
348 JNIEXPORT void JNICALL
349 Java_org_simgrid_msg_Task_sendBounded(JNIEnv * env, jobject jtask,
353 m_task_t task = jtask_to_native_task(jtask, env);
358 jxbt_throw_notbound(env, "task", jtask);
362 alias = (*env)->GetStringUTFChars(env, jalias, 0);
364 /* Pass a global ref to the Jtask into the Ctask so that the receiver can use it */
365 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
366 rv = MSG_task_send_bounded(task, alias, (double) jmaxRate);
368 (*env)->ReleaseStringUTFChars(env, jalias, alias);
370 jxbt_check_res("MSG_task_send_bounded()", rv,
371 MSG_HOST_FAILURE | MSG_TRANSFER_FAILURE | MSG_TIMEOUT,
373 ("while sending task %s to mailbox %s with max rate %f",
374 MSG_task_get_name(task), alias, (double) jmaxRate));
379 JNIEXPORT jobject JNICALL
380 Java_org_simgrid_msg_Task_receive(JNIEnv * env, jclass cls,
381 jstring jalias, jdouble jtimeout,
385 m_task_t task = NULL;
386 m_host_t host = NULL;
387 jobject jtask_global, jtask_local;
391 host = jhost_get_native(env, jhost);
394 jxbt_throw_notbound(env, "host", jhost);
399 alias = (*env)->GetStringUTFChars(env, jalias, 0);
401 rv = MSG_task_receive_ext(&task, alias, (double) jtimeout, host);
405 jxbt_throw_time_out_failure(env,NULL);
407 case MSG_TRANSFER_FAILURE:
408 jxbt_throw_transfer_failure(env,NULL);
410 case MSG_HOST_FAILURE:
411 jxbt_throw_host_failure(env,NULL);
414 jxbt_throw_native(env,bprintf("receive failed"));
418 jtask_global = MSG_task_get_data(task);
420 /* Convert the global ref into a local ref so that the JVM can free the stuff */
421 jtask_local = (*env)->NewLocalRef(env, jtask_global);
422 (*env)->DeleteGlobalRef(env, jtask_global);
423 MSG_task_set_data(task, NULL);
425 (*env)->ReleaseStringUTFChars(env, jalias, alias);
427 jxbt_check_res("MSG_task_receive_ext()", rv,
428 MSG_HOST_FAILURE | MSG_TRANSFER_FAILURE | MSG_TIMEOUT,
429 bprintf("while receiving from mailbox %s", alias));
431 return (jobject) jtask_local;
435 JNIEXPORT jobject JNICALL
436 Java_org_simgrid_msg_Task_irecv(JNIEnv * env, jclass cls, jstring jmailbox) {
440 //pointer to store the task object pointer.
441 m_task_t *task = xbt_new(m_task_t,1);
443 /* There should be a cache here */
444 comm_class = (*env)->FindClass(env, "org/simgrid/msg/Comm");
447 jxbt_throw_native(env,bprintf("fieldID or methodID or class not found."));
451 jobject jcomm = (*env)->NewObject(env, comm_class, jtask_field_Comm_constructor);
453 jxbt_throw_native(env,bprintf("Can't create a Comm object."));
457 mailbox = (*env)->GetStringUTFChars(env, jmailbox, 0);
459 comm = MSG_task_irecv(task,mailbox);
461 (*env)->SetLongField(env, jcomm, jtask_field_Comm_bind, (jlong) (long)(comm));
462 (*env)->SetLongField(env, jcomm, jtask_field_Comm_taskBind, (jlong) (long)(task));
463 (*env)->SetBooleanField(env, jcomm, jtask_field_Comm_receiving, JNI_TRUE);
465 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
470 JNIEXPORT jobject JNICALL
471 Java_org_simgrid_msg_Task_isend(JNIEnv *env, jobject jtask, jstring jmailbox) {
481 comm_class = (*env)->FindClass(env, "org/simgrid/msg/Comm");
483 if (!comm_class) return NULL;
485 jcomm = (*env)->NewObject(env, comm_class, jtask_field_Comm_constructor);
486 mailbox = (*env)->GetStringUTFChars(env, jmailbox, 0);
488 task = jtask_to_native_task(jtask, env);
491 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
492 (*env)->DeleteLocalRef(env, jcomm);
493 jxbt_throw_notbound(env, "task", jtask);
497 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
498 comm = MSG_task_isend(task,mailbox);
500 (*env)->SetLongField(env, jcomm, jtask_field_Comm_bind, (jlong) (long)(comm));
501 (*env)->SetLongField(env, jcomm, jtask_field_Comm_taskBind, (jlong) (long)(NULL));
502 (*env)->SetBooleanField(env, jcomm, jtask_field_Comm_receiving, JNI_FALSE);
504 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
509 static void msg_task_cancel_on_failed_dsend(void*t) {
511 JNIEnv *env =get_current_thread_env();
512 jobject jtask_global = MSG_task_get_data(task);
514 /* Destroy the global ref so that the JVM can free the stuff */
515 (*env)->DeleteGlobalRef(env, jtask_global);
516 MSG_task_set_data(task, NULL);
517 MSG_task_destroy(task);
520 JNIEXPORT void JNICALL
521 Java_org_simgrid_msg_Task_dsend(JNIEnv * env, jobject jtask,
524 const char *alias = (*env)->GetStringUTFChars(env, jalias, 0);
526 m_task_t task = jtask_to_native_task(jtask, env);
530 (*env)->ReleaseStringUTFChars(env, jalias, alias);
531 jxbt_throw_notbound(env, "task", jtask);
535 /* Pass a global ref to the Jtask into the Ctask so that the receiver can use it */
536 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
537 MSG_task_dsend(task, alias, msg_task_cancel_on_failed_dsend);
539 (*env)->ReleaseStringUTFChars(env, jalias, alias);
542 JNIEXPORT jboolean JNICALL
543 Java_org_simgrid_msg_Task_listen(JNIEnv * env, jclass cls,
549 alias = (*env)->GetStringUTFChars(env, jalias, 0);
551 rv = MSG_task_listen(alias);
553 (*env)->ReleaseStringUTFChars(env, jalias, alias);
555 return (jboolean) rv;
558 JNIEXPORT jint JNICALL
559 Java_org_simgrid_msg_Task_listenFromHost(JNIEnv * env, jclass cls,
565 m_host_t host = jhost_get_native(env, jhost);
568 jxbt_throw_notbound(env, "host", jhost);
571 alias = (*env)->GetStringUTFChars(env, jalias, 0);
573 rv = MSG_task_listen_from_host(alias, host);
575 (*env)->ReleaseStringUTFChars(env, jalias, alias);
581 JNIEXPORT jint JNICALL
582 Java_org_simgrid_msg_Task_listenFrom(JNIEnv * env, jclass cls,
586 const char *alias = (*env)->GetStringUTFChars(env, jalias, 0);
588 rv = MSG_task_listen_from(alias);
590 (*env)->ReleaseStringUTFChars(env, jalias, alias);