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.
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");
55 JNIEXPORT void JNICALL
56 Java_org_simgrid_msg_Task_create(JNIEnv * env,
57 jobject jtask, jstring jname,
58 jdouble jcomputeDuration,
61 m_task_t task; /* the native task to create */
62 const char *name = NULL; /* the name of the task */
64 if (jcomputeDuration < 0) {
65 jxbt_throw_illegal(env,
67 ("Task ComputeDuration (%f) cannot be negative",
68 (double) jcomputeDuration));
72 if (jmessageSize < 0) {
73 jxbt_throw_illegal(env,
74 bprintf("Task MessageSize (%f) cannot be negative",
75 (double) jmessageSize));
80 /* get the C string from the java string */
81 name = (*env)->GetStringUTFChars(env, jname, 0);
87 MSG_task_create(name, (double) jcomputeDuration,
88 (double) jmessageSize, NULL);
90 (*env)->ReleaseStringUTFChars(env, jname, name);
92 /* bind & store the task */
93 jtask_bind(jtask, task, env);
94 MSG_task_set_data(task, jtask);
97 JNIEXPORT void JNICALL
98 Java_org_simgrid_msg_Task_parallelCreate(JNIEnv * env,
103 jcomputeDurations_arg,
107 m_task_t task; /* the native parallel task to create */
108 const char *name; /* the name of the task */
111 double *computeDurations;
112 double *messageSizes;
113 jdouble *jcomputeDurations;
114 jdouble *jmessageSizes;
120 if (!jcomputeDurations_arg) {
123 ("Parallel task compute durations cannot be null"));
127 if (!jmessageSizes_arg) {
130 ("Parallel task message sizes cannot be null"));
135 jxbt_throw_null(env, xbt_strdup("Parallel task name cannot be null"));
139 host_count = (int) (*env)->GetArrayLength(env, jhosts);
142 hosts = xbt_new0(m_host_t, host_count);
143 computeDurations = xbt_new0(double, host_count);
144 messageSizes = xbt_new0(double, host_count * host_count);
147 (*env)->GetDoubleArrayElements(env, jcomputeDurations_arg, 0);
149 (*env)->GetDoubleArrayElements(env, jmessageSizes_arg, 0);
151 for (index = 0; index < host_count; index++) {
152 jhost = (*env)->GetObjectArrayElement(env, jhosts, index);
153 hosts[index] = jhost_get_native(env, jhost);
154 computeDurations[index] = jcomputeDurations[index];
156 for (index = 0; index < host_count * host_count; index++) {
157 messageSizes[index] = jmessageSizes[index];
160 (*env)->ReleaseDoubleArrayElements(env, jcomputeDurations_arg,
161 jcomputeDurations, 0);
162 (*env)->ReleaseDoubleArrayElements(env, jmessageSizes_arg, jmessageSizes,
166 /* get the C string from the java string */
167 name = (*env)->GetStringUTFChars(env, jname, 0);
170 MSG_parallel_task_create(name, host_count, hosts, computeDurations,
173 (*env)->ReleaseStringUTFChars(env, jname, name);
175 /* associate the java task object and the native task */
176 jtask_bind(jtask, task, env);
178 MSG_task_set_data(task, (void *) jtask);
180 if (!MSG_task_get_data(task))
181 jxbt_throw_jni(env, "global ref allocation failed");
184 JNIEXPORT jstring JNICALL
185 Java_org_simgrid_msg_Task_getName(JNIEnv * env,
187 m_task_t task = jtask_to_native_task(jtask, env);
190 jxbt_throw_notbound(env, "task", jtask);
194 return (*env)->NewStringUTF(env, MSG_task_get_name(task));
197 JNIEXPORT jobject JNICALL
198 Java_org_simgrid_msg_Task_getSender(JNIEnv * env,
202 m_task_t task = jtask_to_native_task(jtask, env);
205 jxbt_throw_notbound(env, "task", jtask);
209 process = MSG_task_get_sender(task);
210 return (jobject) native_to_java_process(process);
213 JNIEXPORT jobject JNICALL
214 Java_org_simgrid_msg_Task_irecv(JNIEnv * env, jclass cls, jstring jmailbox) {
218 //pointer to store the task object pointer.
219 m_task_t *task = xbt_new(m_task_t,1);
221 /* There should be a cache here */
222 comm_class = (*env)->FindClass(env, "org/simgrid/msg/Comm");
225 jxbt_throw_native(env,bprintf("fieldID or methodID or class not found."));
229 jobject jcomm = (*env)->NewObject(env, comm_class, jtask_field_Comm_constructor);
231 jxbt_throw_native(env,bprintf("Can't create a Comm object."));
235 mailbox = (*env)->GetStringUTFChars(env, jmailbox, 0);
237 comm = MSG_task_irecv(task,mailbox);
239 (*env)->SetLongField(env, jcomm, jtask_field_Comm_bind, (jlong) (long)(comm));
240 (*env)->SetLongField(env, jcomm, jtask_field_Comm_taskBind, (jlong) (long)(task));
241 (*env)->SetBooleanField(env, jcomm, jtask_field_Comm_receiving, JNI_TRUE);
243 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
248 JNIEXPORT jobject JNICALL
249 Java_org_simgrid_msg_Task_isend(JNIEnv *env, jobject jtask, jstring jmailbox) {
259 comm_class = (*env)->FindClass(env, "org/simgrid/msg/Comm");
261 if (!comm_class) return NULL;
263 jcomm = (*env)->NewObject(env, comm_class, jtask_field_Comm_constructor);
264 mailbox = (*env)->GetStringUTFChars(env, jmailbox, 0);
266 task = jtask_to_native_task(jtask, env);
269 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
270 (*env)->DeleteLocalRef(env, jcomm);
271 jxbt_throw_notbound(env, "task", jtask);
275 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
276 comm = MSG_task_isend(task,mailbox);
278 (*env)->SetLongField(env, jcomm, jtask_field_Comm_bind, (jlong) (long)(comm));
279 (*env)->SetLongField(env, jcomm, jtask_field_Comm_taskBind, (jlong) (long)(NULL));
280 (*env)->SetBooleanField(env, jcomm, jtask_field_Comm_receiving, JNI_FALSE);
282 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
287 static void msg_task_cancel_on_failed_dsend(void*t) {
289 JNIEnv *env =get_current_thread_env();
290 jobject jtask_global = MSG_task_get_data(task);
292 /* Destroy the global ref so that the JVM can free the stuff */
293 (*env)->DeleteGlobalRef(env, jtask_global);
294 MSG_task_set_data(task, NULL);
295 MSG_task_destroy(task);
298 JNIEXPORT void JNICALL
299 Java_org_simgrid_msg_Task_dsend(JNIEnv * env, jobject jtask,
302 const char *alias = (*env)->GetStringUTFChars(env, jalias, 0);
304 m_task_t task = jtask_to_native_task(jtask, env);
308 (*env)->ReleaseStringUTFChars(env, jalias, alias);
309 jxbt_throw_notbound(env, "task", jtask);
313 /* Pass a global ref to the Jtask into the Ctask so that the receiver can use it */
314 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
315 MSG_task_dsend(task, alias, msg_task_cancel_on_failed_dsend);
317 (*env)->ReleaseStringUTFChars(env, jalias, alias);
320 JNIEXPORT jboolean JNICALL
321 Java_org_simgrid_msg_Task_listen(JNIEnv * env, jclass cls,
327 alias = (*env)->GetStringUTFChars(env, jalias, 0);
329 rv = MSG_task_listen(alias);
331 (*env)->ReleaseStringUTFChars(env, jalias, alias);
333 return (jboolean) rv;
336 JNIEXPORT jint JNICALL
337 Java_org_simgrid_msg_Task_listenFromHost(JNIEnv * env, jclass cls,
343 m_host_t host = jhost_get_native(env, jhost);
346 jxbt_throw_notbound(env, "host", jhost);
349 alias = (*env)->GetStringUTFChars(env, jalias, 0);
351 rv = MSG_task_listen_from_host(alias, host);
353 (*env)->ReleaseStringUTFChars(env, jalias, alias);
359 JNIEXPORT jint JNICALL
360 Java_org_simgrid_msg_Task_listenFrom(JNIEnv * env, jclass cls,
364 const char *alias = (*env)->GetStringUTFChars(env, jalias, 0);
366 rv = MSG_task_listen_from(alias);
368 (*env)->ReleaseStringUTFChars(env, jalias, alias);