1 /* Functions related to the java host instances. */
3 /* Copyright (c) 2007-2015. 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 "simgrid/msg.h"
12 #include "jmsg_host.h"
13 #include "jxbt_utilities.h"
14 #include "jmsg_storage.h"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
19 static jmethodID jhost_method_Host_constructor;
20 static jfieldID jhost_field_Host_bind;
21 static jfieldID jhost_field_Host_name;
23 jobject jhost_new_instance(JNIEnv * env) {
24 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
25 return (*env)->NewObject(env, cls, jhost_method_Host_constructor);
28 jobject jhost_ref(JNIEnv * env, jobject jhost) {
29 return (*env)->NewGlobalRef(env, jhost);
32 void jhost_unref(JNIEnv * env, jobject jhost) {
33 (*env)->DeleteGlobalRef(env, jhost);
36 void jhost_bind(jobject jhost, msg_host_t host, JNIEnv * env) {
37 (*env)->SetLongField(env, jhost, jhost_field_Host_bind, (jlong) (uintptr_t) (host));
40 msg_host_t jhost_get_native(JNIEnv * env, jobject jhost) {
41 return (msg_host_t) (uintptr_t) (*env)->GetLongField(env, jhost, jhost_field_Host_bind);
44 const char *jhost_get_name(jobject jhost, JNIEnv * env) {
45 msg_host_t host = jhost_get_native(env, jhost);
46 return MSG_host_get_name(host);
49 jboolean jhost_is_valid(jobject jhost, JNIEnv * env) {
50 if ((*env)->GetLongField(env, jhost, jhost_field_Host_bind)) {
57 JNIEXPORT void JNICALL
58 Java_org_simgrid_msg_Host_nativeInit(JNIEnv *env, jclass cls) {
59 jclass class_Host = (*env)->FindClass(env, "org/simgrid/msg/Host");
60 jhost_method_Host_constructor = (*env)->GetMethodID(env, class_Host, "<init>", "()V");
61 jhost_field_Host_bind = jxbt_get_jfield(env,class_Host, "bind", "J");
62 jhost_field_Host_name = jxbt_get_jfield(env, class_Host, "name", "Ljava/lang/String;");
63 if (!class_Host || !jhost_field_Host_name || !jhost_method_Host_constructor || !jhost_field_Host_bind) {
64 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
67 JNIEXPORT jobject JNICALL
68 Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls,
70 msg_host_t host; /* native host */
71 jobject jhost; /* global reference to the java host instance returned */
73 /* get the C string from the java string */
75 jxbt_throw_null(env,bprintf("No host can have a null name"));
78 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
79 /* get the host by name (the hosts are created during the grid resolution) */
80 host = MSG_host_by_name(name);
82 if (!host) { /* invalid name */
83 jxbt_throw_host_not_found(env, name);
84 (*env)->ReleaseStringUTFChars(env, jname, name);
87 (*env)->ReleaseStringUTFChars(env, jname, name);
89 if (!xbt_lib_get_level(host, JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
91 /* Instantiate a new java host */
92 jhost = jhost_new_instance(env);
95 jxbt_throw_jni(env, "java host instantiation failed");
99 /* get a global reference to the newly created host */
100 jhost = jhost_ref(env, jhost);
103 jxbt_throw_jni(env, "new global ref allocation failed");
106 /* Sets the java host name */
107 (*env)->SetObjectField(env, jhost, jhost_field_Host_name, jname);
108 /* bind the java host and the native host */
109 jhost_bind(jhost, host, env);
111 /* the native host data field is set with the global reference to the
112 * java host returned by this function
114 xbt_lib_set(host_lib, host->key, JAVA_HOST_LEVEL, (void *) jhost);
117 /* return the global reference to the java host instance */
118 return (jobject) xbt_lib_get_level(host, JAVA_HOST_LEVEL);
121 JNIEXPORT jobject JNICALL
122 Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
125 msg_host_t host = MSG_host_self();
127 if (!xbt_lib_get_level(host, JAVA_HOST_LEVEL)) {
128 /* the native host not yet associated with the java host instance */
130 /* instanciate a new java host instance */
131 jhost = jhost_new_instance(env);
134 jxbt_throw_jni(env, "java host instantiation failed");
138 /* get a global reference to the newly created host */
139 jhost = jhost_ref(env, jhost);
142 jxbt_throw_jni(env, "global ref allocation failed");
145 /* Sets the host name */
146 const char *name = MSG_host_get_name(host);
147 jobject jname = (*env)->NewStringUTF(env,name);
148 (*env)->SetObjectField(env, jhost, jhost_field_Host_name, jname);
149 /* Bind & store it */
150 jhost_bind(jhost, host, env);
151 xbt_lib_set(host_lib, host->key, JAVA_HOST_LEVEL, (void *) jhost);
153 jhost = (jobject) xbt_lib_get_level(host, JAVA_HOST_LEVEL);
159 JNIEXPORT void JNICALL
160 Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
161 msg_host_t host = jhost_get_native(env, jhost);
165 JNIEXPORT void JNICALL
166 Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
167 msg_host_t host = jhost_get_native(env, jhost);
171 JNIEXPORT jint JNICALL
172 Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
173 xbt_dynar_t hosts = MSG_hosts_as_dynar();
174 int nb_host = xbt_dynar_length(hosts);
175 xbt_dynar_free(&hosts);
176 return (jint) nb_host;
179 JNIEXPORT jdouble JNICALL
180 Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env,
182 msg_host_t host = jhost_get_native(env, jhost);
185 jxbt_throw_notbound(env, "host", jhost);
189 return (jdouble) MSG_get_host_speed(host);
192 JNIEXPORT jdouble JNICALL
193 Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env,
195 msg_host_t host = jhost_get_native(env, jhost);
198 jxbt_throw_notbound(env, "host", jhost);
202 return (jdouble) MSG_host_get_core_number(host);
205 JNIEXPORT jint JNICALL
206 Java_org_simgrid_msg_Host_getLoad(JNIEnv * env, jobject jhost) {
207 msg_host_t host = jhost_get_native(env, jhost);
210 jxbt_throw_notbound(env, "host", jhost);
214 return (jint) MSG_get_host_msgload(host);
216 JNIEXPORT jobject JNICALL
217 Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
218 msg_host_t host = jhost_get_native(env, jhost);
221 jxbt_throw_notbound(env, "host", jhost);
224 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
226 const char *property = MSG_host_get_property_value(host, name);
231 jobject jproperty = (*env)->NewStringUTF(env, property);
233 (*env)->ReleaseStringUTFChars(env, jname, name);
238 JNIEXPORT void JNICALL
239 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
240 msg_host_t host = jhost_get_native(env, jhost);
243 jxbt_throw_notbound(env, "host", jhost);
246 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
247 const char *value_java = (*env)->GetStringUTFChars(env, jvalue, 0);
248 char *value = xbt_strdup(value_java);
250 MSG_host_set_property_value(host, name, value, xbt_free_f);
252 (*env)->ReleaseStringUTFChars(env, jvalue, value);
253 (*env)->ReleaseStringUTFChars(env, jname, name);
256 JNIEXPORT jboolean JNICALL
257 Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost) {
258 msg_host_t host = jhost_get_native(env, jhost);
261 jxbt_throw_notbound(env, "host", jhost);
265 return (jboolean) MSG_host_is_on(host);
268 JNIEXPORT jobjectArray JNICALL
269 Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost){
271 msg_host_t host = jhost_get_native(env, jhost);
276 jxbt_throw_notbound(env, "host", jhost);
282 xbt_dict_t dict = MSG_host_get_mounted_storage_list(host);
283 int count = xbt_dict_length(dict);
284 jclass cls = (*env)->FindClass(env, "org/simgrid/msg/Storage");
286 jtable = (*env)->NewObjectArray(env, (jsize) count, cls, NULL);
289 jxbt_throw_jni(env, "Storages table allocation failed");
293 xbt_dict_cursor_t cursor=NULL;
294 const char *mount_name, *storage_name;
296 xbt_dict_foreach(dict,cursor,mount_name,storage_name) {
297 jname = (*env)->NewStringUTF(env, storage_name);
298 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
299 (*env)->SetObjectArrayElement(env, jtable, index, jstorage);
302 xbt_dict_free(&dict);
306 JNIEXPORT jobjectArray JNICALL
307 Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost){
308 msg_host_t host = jhost_get_native(env, jhost);
311 jxbt_throw_notbound(env, "host", jhost);
316 xbt_dynar_t dyn = MSG_host_get_attached_storage_list(host);
317 int count = xbt_dynar_length(dyn);
318 jclass cls = jxbt_get_class(env, "java/lang/String");
319 jtable = (*env)->NewObjectArray(env, (jsize) count, cls, NULL);
322 jstring jstorage_name;
323 for (index = 0; index < count; index++) {
324 storage_name = xbt_dynar_get_as(dyn,index,char*);
325 jstorage_name = (*env)->NewStringUTF(env,storage_name);
326 (*env)->SetObjectArrayElement(env, jtable, index, jstorage_name);
332 JNIEXPORT jobjectArray JNICALL
333 Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost){
334 msg_host_t host = jhost_get_native(env, jhost);
337 jxbt_throw_notbound(env, "host", jhost);
340 return (jobjectArray)MSG_host_get_storage_content(host);
344 JNIEXPORT jobjectArray JNICALL
345 Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
353 xbt_dynar_t table = MSG_hosts_as_dynar();
354 int count = xbt_dynar_length(table);
356 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
362 jtable = (*env)->NewObjectArray(env, (jsize) count, cls, NULL);
365 jxbt_throw_jni(env, "Hosts table allocation failed");
369 for (index = 0; index < count; index++) {
370 host = xbt_dynar_get_as(table,index,msg_host_t);
371 jhost = (jobject) (xbt_lib_get_level(host, JAVA_HOST_LEVEL));
374 jname = (*env)->NewStringUTF(env, MSG_host_get_name(host));
377 Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
378 /* FIXME: leak of jname ? */
381 (*env)->SetObjectArrayElement(env, jtable, index, jhost);
383 xbt_dynar_free(&table);
387 JNIEXPORT void JNICALL
388 Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname){
390 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
391 MSG_mailbox_set_async(name);
392 (*env)->ReleaseStringUTFChars(env, jname, name);