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"
15 #include <surf/surf_routing.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(cls, jhost_method_Host_constructor);
28 jobject jhost_ref(JNIEnv * env, jobject jhost) {
29 return env->NewGlobalRef(jhost);
32 void jhost_unref(JNIEnv * env, jobject jhost) {
33 env->DeleteGlobalRef(jhost);
36 void jhost_bind(jobject jhost, msg_host_t host, JNIEnv * env) {
37 env->SetLongField(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(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(jhost, jhost_field_Host_bind)) {
57 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_nativeInit(JNIEnv *env, jclass cls) {
58 jclass class_Host = env->FindClass("org/simgrid/msg/Host");
59 jhost_method_Host_constructor = env->GetMethodID(class_Host, "<init>", "()V");
60 jhost_field_Host_bind = jxbt_get_jfield(env,class_Host, "bind", "J");
61 jhost_field_Host_name = jxbt_get_jfield(env, class_Host, "name", "Ljava/lang/String;");
62 if (!class_Host || !jhost_field_Host_name || !jhost_method_Host_constructor || !jhost_field_Host_bind) {
63 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
67 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls, jstring jname) {
68 msg_host_t host; /* native host */
69 jobject jhost; /* global reference to the java host instance returned */
71 /* get the C string from the java string */
72 if (jname == nullptr) {
73 jxbt_throw_null(env,bprintf("No host can have a null name"));
76 const char *name = env->GetStringUTFChars(jname, 0);
77 /* get the host by name (the hosts are created during the grid resolution) */
78 host = MSG_host_by_name(name);
80 if (!host) { /* invalid name */
81 jxbt_throw_host_not_found(env, name);
82 env->ReleaseStringUTFChars(jname, name);
85 env->ReleaseStringUTFChars(jname, name);
87 if (!host->extension(JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
88 /* Instantiate a new java host */
89 jhost = jhost_new_instance(env);
92 jxbt_throw_jni(env, "java host instantiation failed");
96 /* get a global reference to the newly created host */
97 jhost = jhost_ref(env, jhost);
100 jxbt_throw_jni(env, "new global ref allocation failed");
103 /* Sets the java host name */
104 env->SetObjectField(jhost, jhost_field_Host_name, jname);
105 /* bind the java host and the native host */
106 jhost_bind(jhost, host, env);
108 /* the native host data field is set with the global reference to the java host returned by this function */
109 host->extension_set(JAVA_HOST_LEVEL, (void *)jhost);
112 /* return the global reference to the java host instance */
113 return (jobject) host->extension(JAVA_HOST_LEVEL);
116 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
119 msg_host_t host = MSG_host_self();
121 if (!host->extension(JAVA_HOST_LEVEL)) {
122 /* the native host not yet associated with the java host instance */
124 /* instanciate a new java host instance */
125 jhost = jhost_new_instance(env);
128 jxbt_throw_jni(env, "java host instantiation failed");
132 /* get a global reference to the newly created host */
133 jhost = jhost_ref(env, jhost);
136 jxbt_throw_jni(env, "global ref allocation failed");
139 /* Sets the host name */
140 const char *name = MSG_host_get_name(host);
141 jobject jname = env->NewStringUTF(name);
142 env->SetObjectField(jhost, jhost_field_Host_name, jname);
143 /* Bind & store it */
144 jhost_bind(jhost, host, env);
145 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
147 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
153 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
154 msg_host_t host = jhost_get_native(env, jhost);
158 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
159 msg_host_t host = jhost_get_native(env, jhost);
163 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
164 xbt_dynar_t hosts = MSG_hosts_as_dynar();
165 int nb_host = xbt_dynar_length(hosts);
166 xbt_dynar_free(&hosts);
167 return (jint) nb_host;
170 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env, jobject jhost) {
171 msg_host_t host = jhost_get_native(env, jhost);
174 jxbt_throw_notbound(env, "host", jhost);
178 return (jdouble) MSG_host_get_speed(host);
181 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env, jobject jhost) {
182 msg_host_t host = jhost_get_native(env, jhost);
185 jxbt_throw_notbound(env, "host", jhost);
189 return (jdouble) MSG_host_get_core_number(host);
192 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
193 msg_host_t host = jhost_get_native(env, jhost);
196 jxbt_throw_notbound(env, "host", jhost);
199 const char *name = env->GetStringUTFChars((jstring) jname, 0);
201 const char *property = MSG_host_get_property_value(host, name);
206 jobject jproperty = env->NewStringUTF(property);
208 env->ReleaseStringUTFChars((jstring) jname, name);
213 JNIEXPORT void JNICALL
214 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
215 msg_host_t host = jhost_get_native(env, jhost);
218 jxbt_throw_notbound(env, "host", jhost);
221 const char *name = env->GetStringUTFChars((jstring) jname, 0);
222 const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
223 char *value = xbt_strdup(value_java);
225 MSG_host_set_property_value(host, name, value, xbt_free_f);
227 env->ReleaseStringUTFChars((jstring) jvalue, value_java);
228 env->ReleaseStringUTFChars((jstring) jname, name);
231 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost)
233 msg_host_t host = jhost_get_native(env, jhost);
236 jxbt_throw_notbound(env, "host", jhost);
240 return (jboolean) MSG_host_is_on(host);
243 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost)
245 msg_host_t host = jhost_get_native(env, jhost);
250 jxbt_throw_notbound(env, "host", jhost);
256 xbt_dict_t dict = MSG_host_get_mounted_storage_list(host);
257 int count = xbt_dict_length(dict);
258 jclass cls = env->FindClass("org/simgrid/msg/Storage");
260 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
263 jxbt_throw_jni(env, "Storages table allocation failed");
267 xbt_dict_cursor_t cursor=nullptr;
268 const char* mount_name;
269 const char* storage_name;
271 xbt_dict_foreach(dict,cursor,mount_name,storage_name) {
272 jname = env->NewStringUTF(storage_name);
273 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
274 env->SetObjectArrayElement(jtable, index, jstorage);
277 xbt_dict_free(&dict);
281 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost)
283 msg_host_t host = jhost_get_native(env, jhost);
286 jxbt_throw_notbound(env, "host", jhost);
291 xbt_dynar_t dyn = MSG_host_get_attached_storage_list(host);
292 int count = xbt_dynar_length(dyn);
293 jclass cls = jxbt_get_class(env, "java/lang/String");
294 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
297 jstring jstorage_name;
298 for (index = 0; index < count; index++) {
299 storage_name = xbt_dynar_get_as(dyn,index,char*);
300 jstorage_name = env->NewStringUTF(storage_name);
301 env->SetObjectArrayElement(jtable, index, jstorage_name);
307 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost)
309 msg_host_t host = jhost_get_native(env, jhost);
312 jxbt_throw_notbound(env, "host", jhost);
315 return (jobjectArray)MSG_host_get_storage_content(host);
318 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
326 xbt_dynar_t table = MSG_hosts_as_dynar();
327 int count = xbt_dynar_length(table);
329 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
335 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
338 jxbt_throw_jni(env, "Hosts table allocation failed");
342 for (index = 0; index < count; index++) {
343 host = xbt_dynar_get_as(table,index,msg_host_t);
344 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
347 jname = env->NewStringUTF(MSG_host_get_name(host));
349 jhost = Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
350 /* FIXME: leak of jname ? */
353 env->SetObjectArrayElement(jtable, index, jhost);
355 xbt_dynar_free(&table);
359 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname)
361 const char *name = env->GetStringUTFChars((jstring) jname, 0);
362 MSG_mailbox_set_async(name);
363 env->ReleaseStringUTFChars((jstring) jname, name);
366 #include "simgrid/plugins/energy.h"
367 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getConsumedEnergy (JNIEnv *env, jobject jhost)
369 msg_host_t host = jhost_get_native(env, jhost);
372 jxbt_throw_notbound(env, "host", jhost);
376 return MSG_host_get_consumed_energy(host);