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. */
10 #include "jmsg_task.h"
11 #include "jxbt_utilities.h"
12 #include "jmsg_host.h"
15 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
17 static jmethodID jtask_field_Comm_constructor;
19 static jfieldID jtask_field_Task_bind;
20 static jfieldID jtask_field_Comm_bind;
21 static jfieldID jtask_field_Comm_taskBind;
22 static jfieldID jtask_field_Comm_receiving;
24 void jtask_bind(jobject jtask, m_task_t task, JNIEnv * env)
26 (*env)->SetLongField(env, jtask, jtask_field_Task_bind, (jlong) (long) (task));
29 m_task_t jtask_to_native_task(jobject jtask, JNIEnv * env)
31 return (m_task_t) (long) (*env)->GetLongField(env, jtask, jtask_field_Task_bind);
34 jboolean jtask_is_valid(jobject jtask, JNIEnv * env)
36 return (*env)->GetLongField(env, jtask, jtask_field_Task_bind) ? JNI_TRUE : JNI_FALSE;
39 JNIEXPORT void JNICALL
40 Java_org_simgrid_msg_Task_nativeInit(JNIEnv *env, jclass cls) {
41 jclass jtask_class_Comm = (*env)->FindClass(env, "org/simgrid/msg/Comm");
43 jtask_field_Comm_constructor = (*env)->GetMethodID(env, jtask_class_Comm, "<init>", "()V");
44 //FIXME: Don't use jxbt_get_sfield directly.
45 jtask_field_Task_bind = jxbt_get_sfield(env, "org/simgrid/msg/Task", "bind", "J");
46 jtask_field_Comm_bind = jxbt_get_sfield(env, "org/simgrid/msg/Comm", "bind", "J");
47 jtask_field_Comm_taskBind = jxbt_get_sfield(env, "org/simgrid/msg/Comm", "taskBind", "J");
48 jtask_field_Comm_receiving = jxbt_get_sfield(env, "org/simgrid/msg/Comm", "receiving", "Z");
51 JNIEXPORT void JNICALL
52 Java_org_simgrid_msg_Task_create(JNIEnv * env,
53 jobject jtask, jstring jname,
54 jdouble jcomputeDuration,
57 m_task_t task; /* the native task to create */
58 const char *name = NULL; /* the name of the task */
60 if (jcomputeDuration < 0) {
61 jxbt_throw_illegal(env,
63 ("Task ComputeDuration (%f) cannot be negative",
64 (double) jcomputeDuration));
68 if (jmessageSize < 0) {
69 jxbt_throw_illegal(env,
70 bprintf("Task MessageSize (%f) cannot be negative",
71 (double) jmessageSize));
76 /* get the C string from the java string */
77 name = (*env)->GetStringUTFChars(env, jname, 0);
83 MSG_task_create(name, (double) jcomputeDuration,
84 (double) jmessageSize, NULL);
86 (*env)->ReleaseStringUTFChars(env, jname, name);
88 /* bind & store the task */
89 jtask_bind(jtask, task, env);
90 MSG_task_set_data(task, jtask);
93 JNIEXPORT void JNICALL
94 Java_org_simgrid_msg_Task_parallelCreate(JNIEnv * env,
99 jcomputeDurations_arg,
103 m_task_t task; /* the native parallel task to create */
104 const char *name; /* the name of the task */
107 double *computeDurations;
108 double *messageSizes;
109 jdouble *jcomputeDurations;
110 jdouble *jmessageSizes;
116 if (!jcomputeDurations_arg) {
119 ("Parallel task compute durations cannot be null"));
123 if (!jmessageSizes_arg) {
126 ("Parallel task message sizes cannot be null"));
131 jxbt_throw_null(env, xbt_strdup("Parallel task name cannot be null"));
135 host_count = (int) (*env)->GetArrayLength(env, jhosts);
138 hosts = xbt_new0(m_host_t, host_count);
139 computeDurations = xbt_new0(double, host_count);
140 messageSizes = xbt_new0(double, host_count * host_count);
143 (*env)->GetDoubleArrayElements(env, jcomputeDurations_arg, 0);
145 (*env)->GetDoubleArrayElements(env, jmessageSizes_arg, 0);
147 for (index = 0; index < host_count; index++) {
148 jhost = (*env)->GetObjectArrayElement(env, jhosts, index);
149 hosts[index] = jhost_get_native(env, jhost);
150 computeDurations[index] = jcomputeDurations[index];
152 for (index = 0; index < host_count * host_count; index++) {
153 messageSizes[index] = jmessageSizes[index];
156 (*env)->ReleaseDoubleArrayElements(env, jcomputeDurations_arg,
157 jcomputeDurations, 0);
158 (*env)->ReleaseDoubleArrayElements(env, jmessageSizes_arg, jmessageSizes,
162 /* get the C string from the java string */
163 name = (*env)->GetStringUTFChars(env, jname, 0);
166 MSG_parallel_task_create(name, host_count, hosts, computeDurations,
169 (*env)->ReleaseStringUTFChars(env, jname, name);
171 /* associate the java task object and the native task */
172 jtask_bind(jtask, task, env);
174 MSG_task_set_data(task, (void *) jtask);
176 if (!MSG_task_get_data(task))
177 jxbt_throw_jni(env, "global ref allocation failed");
180 JNIEXPORT jstring JNICALL
181 Java_org_simgrid_msg_Task_getName(JNIEnv * env,
183 m_task_t task = jtask_to_native_task(jtask, env);
186 jxbt_throw_notbound(env, "task", jtask);
190 return (*env)->NewStringUTF(env, MSG_task_get_name(task));
193 JNIEXPORT jobject JNICALL
194 Java_org_simgrid_msg_Task_irecv(JNIEnv * env, jclass cls, jstring jmailbox) {
198 //pointer to store the task object pointer.
199 m_task_t *task = xbt_new(m_task_t,1);
201 /* There should be a cache here */
202 comm_class = (*env)->FindClass(env, "org/simgrid/msg/Comm");
205 jxbt_throw_native(env,bprintf("fieldID or methodID or class not found."));
209 jobject jcomm = (*env)->NewObject(env, comm_class, jtask_field_Comm_constructor);
211 jxbt_throw_native(env,bprintf("Can't create a Comm object."));
215 mailbox = (*env)->GetStringUTFChars(env, jmailbox, 0);
217 comm = MSG_task_irecv(task,mailbox);
219 (*env)->SetLongField(env, jcomm, jtask_field_Comm_bind, (jlong) (long)(comm));
220 (*env)->SetLongField(env, jcomm, jtask_field_Comm_taskBind, (jlong) (long)(task));
221 (*env)->SetBooleanField(env, jcomm, jtask_field_Comm_receiving, JNI_TRUE);
223 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
228 JNIEXPORT jobject JNICALL
229 Java_org_simgrid_msg_Task_isend(JNIEnv *env, jobject jtask, jstring jmailbox) {
239 comm_class = (*env)->FindClass(env, "org/simgrid/msg/Comm");
241 if (!comm_class) return NULL;
243 jcomm = (*env)->NewObject(env, comm_class, jtask_field_Comm_constructor);
244 mailbox = (*env)->GetStringUTFChars(env, jmailbox, 0);
246 task = jtask_to_native_task(jtask, env);
249 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);
250 (*env)->DeleteLocalRef(env, jcomm);
251 jxbt_throw_notbound(env, "task", jtask);
255 MSG_task_set_data(task, (void *) (*env)->NewGlobalRef(env, jtask));
256 comm = MSG_task_isend(task,mailbox);
258 (*env)->SetLongField(env, jcomm, jtask_field_Comm_bind, (jlong) (long)(comm));
259 (*env)->SetLongField(env, jcomm, jtask_field_Comm_taskBind, (jlong) (long)(NULL));
260 (*env)->SetBooleanField(env, jcomm, jtask_field_Comm_receiving, JNI_FALSE);
262 (*env)->ReleaseStringUTFChars(env, jmailbox, mailbox);