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 <xbt/dynar.h>
14 #include <surf/surf_routing.h>
16 #include <simgrid/s4u/host.hpp>
18 #include "simgrid/msg.h"
20 #include "jmsg_host.h"
21 #include "jxbt_utilities.h"
22 #include "jmsg_storage.h"
24 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
26 static jmethodID jhost_method_Host_constructor;
27 static jfieldID jhost_field_Host_bind;
28 static jfieldID jhost_field_Host_name;
30 jobject jhost_new_instance(JNIEnv * env) {
31 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
32 return env->NewObject(cls, jhost_method_Host_constructor);
35 jobject jhost_ref(JNIEnv * env, jobject jhost) {
36 return env->NewGlobalRef(jhost);
39 void jhost_unref(JNIEnv * env, jobject jhost) {
40 env->DeleteGlobalRef(jhost);
43 void jhost_bind(jobject jhost, msg_host_t host, JNIEnv * env) {
44 env->SetLongField(jhost, jhost_field_Host_bind, (jlong) (uintptr_t) (host));
47 msg_host_t jhost_get_native(JNIEnv * env, jobject jhost) {
48 return (msg_host_t) (uintptr_t) env->GetLongField(jhost, jhost_field_Host_bind);
51 const char *jhost_get_name(jobject jhost, JNIEnv * env) {
52 msg_host_t host = jhost_get_native(env, jhost);
56 jboolean jhost_is_valid(jobject jhost, JNIEnv * env) {
57 if (env->GetLongField(jhost, jhost_field_Host_bind)) {
64 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_nativeInit(JNIEnv *env, jclass cls) {
65 jclass class_Host = env->FindClass("org/simgrid/msg/Host");
66 jhost_method_Host_constructor = env->GetMethodID(class_Host, "<init>", "()V");
67 jhost_field_Host_bind = jxbt_get_jfield(env,class_Host, "bind", "J");
68 jhost_field_Host_name = jxbt_get_jfield(env, class_Host, "name", "Ljava/lang/String;");
69 if (!class_Host || !jhost_field_Host_name || !jhost_method_Host_constructor || !jhost_field_Host_bind) {
70 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
74 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls, jstring jname) {
76 /* get the C string from the java string */
77 if (jname == nullptr) {
78 jxbt_throw_null(env,bprintf("No host can have a null name"));
81 const char *name = env->GetStringUTFChars(jname, 0);
82 /* get the host by name (the hosts are created during the grid resolution) */
83 msg_host_t host = MSG_host_by_name(name);
85 if (!host) { /* invalid name */
86 jxbt_throw_host_not_found(env, name);
87 env->ReleaseStringUTFChars(jname, name);
90 env->ReleaseStringUTFChars(jname, name);
92 if (!host->extension(JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
93 /* Instantiate a new java host */
94 jobject jhost = jhost_new_instance(env);
97 jxbt_throw_jni(env, "java host instantiation failed");
101 /* get a global reference to the newly created host */
102 jhost = jhost_ref(env, jhost);
105 jxbt_throw_jni(env, "new global ref allocation failed");
108 /* Sets the java host name */
109 env->SetObjectField(jhost, jhost_field_Host_name, jname);
110 /* bind the java host and the native host */
111 jhost_bind(jhost, host, env);
113 /* the native host data field is set with the global reference to the java host returned by this function */
114 host->extension_set(JAVA_HOST_LEVEL, (void *)jhost);
117 /* return the global reference to the java host instance */
118 return (jobject) host->extension(JAVA_HOST_LEVEL);
121 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
124 msg_host_t host = MSG_host_self();
126 if (!host->extension(JAVA_HOST_LEVEL)) {
127 /* the native host not yet associated with the java host instance */
129 /* instanciate a new java host instance */
130 jhost = jhost_new_instance(env);
133 jxbt_throw_jni(env, "java host instantiation failed");
137 /* get a global reference to the newly created host */
138 jhost = jhost_ref(env, jhost);
141 jxbt_throw_jni(env, "global ref allocation failed");
144 /* Sets the host name */
145 jobject jname = env->NewStringUTF(host->cname());
146 env->SetObjectField(jhost, jhost_field_Host_name, jname);
147 /* Bind & store it */
148 jhost_bind(jhost, host, env);
149 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
151 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
157 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
158 msg_host_t host = jhost_get_native(env, jhost);
162 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
163 msg_host_t host = jhost_get_native(env, jhost);
167 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
168 xbt_dynar_t hosts = MSG_hosts_as_dynar();
169 int nb_host = xbt_dynar_length(hosts);
170 xbt_dynar_free(&hosts);
171 return (jint) nb_host;
174 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env, jobject jhost) {
175 msg_host_t host = jhost_get_native(env, jhost);
178 jxbt_throw_notbound(env, "host", jhost);
182 return (jdouble) MSG_host_get_speed(host);
185 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env, jobject jhost) {
186 msg_host_t host = jhost_get_native(env, jhost);
189 jxbt_throw_notbound(env, "host", jhost);
193 return (jdouble) MSG_host_get_core_number(host);
196 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
197 msg_host_t host = jhost_get_native(env, jhost);
200 jxbt_throw_notbound(env, "host", jhost);
203 const char *name = env->GetStringUTFChars((jstring) jname, 0);
205 const char *property = MSG_host_get_property_value(host, name);
210 jobject jproperty = env->NewStringUTF(property);
212 env->ReleaseStringUTFChars((jstring) jname, name);
217 JNIEXPORT void JNICALL
218 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
219 msg_host_t host = jhost_get_native(env, jhost);
222 jxbt_throw_notbound(env, "host", jhost);
225 const char *name = env->GetStringUTFChars((jstring) jname, 0);
226 const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
227 char *value = xbt_strdup(value_java);
229 MSG_host_set_property_value(host, name, value);
231 env->ReleaseStringUTFChars((jstring) jvalue, value_java);
232 env->ReleaseStringUTFChars((jstring) jname, name);
235 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost)
237 msg_host_t host = jhost_get_native(env, jhost);
240 jxbt_throw_notbound(env, "host", jhost);
244 return (jboolean) MSG_host_is_on(host);
247 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost)
249 msg_host_t host = jhost_get_native(env, jhost);
254 jxbt_throw_notbound(env, "host", jhost);
260 xbt_dict_t dict = MSG_host_get_mounted_storage_list(host);
261 int count = xbt_dict_length(dict);
262 jclass cls = env->FindClass("org/simgrid/msg/Storage");
264 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
267 jxbt_throw_jni(env, "Storages table allocation failed");
271 xbt_dict_cursor_t cursor=nullptr;
272 const char* mount_name;
273 const char* storage_name;
275 xbt_dict_foreach(dict,cursor,mount_name,storage_name) {
276 jname = env->NewStringUTF(storage_name);
277 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
278 env->SetObjectArrayElement(jtable, index, jstorage);
281 xbt_dict_free(&dict);
285 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost)
287 msg_host_t host = jhost_get_native(env, jhost);
290 jxbt_throw_notbound(env, "host", jhost);
295 xbt_dynar_t dyn = MSG_host_get_attached_storage_list(host);
296 int count = xbt_dynar_length(dyn);
297 jclass cls = jxbt_get_class(env, "java/lang/String");
298 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
301 jstring jstorage_name;
302 for (index = 0; index < count; index++) {
303 storage_name = xbt_dynar_get_as(dyn,index,char*);
304 jstorage_name = env->NewStringUTF(storage_name);
305 env->SetObjectArrayElement(jtable, index, jstorage_name);
311 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost)
313 msg_host_t host = jhost_get_native(env, jhost);
316 jxbt_throw_notbound(env, "host", jhost);
319 return (jobjectArray)MSG_host_get_storage_content(host);
322 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
330 xbt_dynar_t table = MSG_hosts_as_dynar();
331 int count = xbt_dynar_length(table);
333 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
339 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
342 jxbt_throw_jni(env, "Hosts table allocation failed");
346 for (index = 0; index < count; index++) {
347 host = xbt_dynar_get_as(table,index,msg_host_t);
348 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
351 jname = env->NewStringUTF(host->cname());
353 jhost = Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
354 /* FIXME: leak of jname ? */
357 env->SetObjectArrayElement(jtable, index, jhost);
359 xbt_dynar_free(&table);
363 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname)
365 const char *name = env->GetStringUTFChars((jstring) jname, 0);
366 MSG_mailbox_set_async(name);
367 env->ReleaseStringUTFChars((jstring) jname, name);
370 #include "simgrid/plugins/energy.h"
371 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getConsumedEnergy (JNIEnv *env, jobject jhost)
373 msg_host_t host = jhost_get_native(env, jhost);
376 jxbt_throw_notbound(env, "host", jhost);
380 return MSG_host_get_consumed_energy(host);