1 /* Functions related to the java host instances. */
3 /* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "simgrid/plugins/energy.h"
9 #include "simgrid/s4u/host.hpp"
12 #include "jmsg_host.h"
13 #include "jxbt_utilities.h"
14 #include "jmsg_storage.h"
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
20 static jmethodID jhost_method_Host_constructor;
21 static jfieldID jhost_field_Host_bind;
22 static jfieldID jhost_field_Host_name;
24 jobject jhost_new_instance(JNIEnv * env) {
25 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
26 return env->NewObject(cls, jhost_method_Host_constructor);
29 jobject jhost_ref(JNIEnv * env, jobject jhost) {
30 return env->NewGlobalRef(jhost);
33 void jhost_unref(JNIEnv * env, jobject jhost) {
34 env->DeleteGlobalRef(jhost);
37 void jhost_bind(jobject jhost, msg_host_t host, JNIEnv * env) {
38 env->SetLongField(jhost, jhost_field_Host_bind, (jlong) (uintptr_t) (host));
41 msg_host_t jhost_get_native(JNIEnv * env, jobject jhost) {
42 return (msg_host_t) (uintptr_t) env->GetLongField(jhost, jhost_field_Host_bind);
45 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_nativeInit(JNIEnv *env, jclass cls) {
46 jclass class_Host = env->FindClass("org/simgrid/msg/Host");
47 jhost_method_Host_constructor = env->GetMethodID(class_Host, "<init>", "()V");
48 jhost_field_Host_bind = jxbt_get_jfield(env,class_Host, "bind", "J");
49 jhost_field_Host_name = jxbt_get_jfield(env, class_Host, "name", "Ljava/lang/String;");
50 xbt_assert(class_Host && jhost_field_Host_name && jhost_method_Host_constructor && jhost_field_Host_bind,
51 "Native initialization of msg/Host failed. Please report that bug");
54 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls, jstring jname) {
56 /* get the C string from the java string */
57 if (jname == nullptr) {
58 jxbt_throw_null(env,bprintf("No host can have a null name"));
61 const char *name = env->GetStringUTFChars(jname, 0);
62 /* get the host by name (the hosts are created during the grid resolution) */
63 msg_host_t host = MSG_host_by_name(name);
65 if (!host) { /* invalid name */
66 jxbt_throw_host_not_found(env, name);
67 env->ReleaseStringUTFChars(jname, name);
70 env->ReleaseStringUTFChars(jname, name);
72 if (!host->extension(JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
73 /* Instantiate a new java host */
74 jobject jhost = jhost_new_instance(env);
77 jxbt_throw_jni(env, "java host instantiation failed");
81 /* get a global reference to the newly created host */
82 jhost = jhost_ref(env, jhost);
85 jxbt_throw_jni(env, "new global ref allocation failed");
88 /* Sets the java host name */
89 env->SetObjectField(jhost, jhost_field_Host_name, jname);
90 /* bind the java host and the native host */
91 jhost_bind(jhost, host, env);
93 /* the native host data field is set with the global reference to the java host returned by this function */
94 host->extension_set(JAVA_HOST_LEVEL, (void *)jhost);
97 /* return the global reference to the java host instance */
98 return (jobject) host->extension(JAVA_HOST_LEVEL);
101 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
104 msg_host_t host = MSG_host_self();
106 if (!host->extension(JAVA_HOST_LEVEL)) {
107 /* the native host not yet associated with the java host instance */
109 /* instanciate a new java host instance */
110 jhost = jhost_new_instance(env);
113 jxbt_throw_jni(env, "java host instantiation failed");
117 /* get a global reference to the newly created host */
118 jhost = jhost_ref(env, jhost);
121 jxbt_throw_jni(env, "global ref allocation failed");
124 /* Sets the host name */
125 jobject jname = env->NewStringUTF(host->cname());
126 env->SetObjectField(jhost, jhost_field_Host_name, jname);
127 /* Bind & store it */
128 jhost_bind(jhost, host, env);
129 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
131 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
137 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
138 msg_host_t host = jhost_get_native(env, jhost);
142 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
143 msg_host_t host = jhost_get_native(env, jhost);
147 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
148 xbt_dynar_t hosts = MSG_hosts_as_dynar();
149 int nb_host = xbt_dynar_length(hosts);
150 xbt_dynar_free(&hosts);
151 return (jint) nb_host;
154 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env, jobject jhost) {
155 msg_host_t host = jhost_get_native(env, jhost);
158 jxbt_throw_notbound(env, "host", jhost);
162 return (jdouble) MSG_host_get_speed(host);
165 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env, jobject jhost) {
166 msg_host_t host = jhost_get_native(env, jhost);
169 jxbt_throw_notbound(env, "host", jhost);
173 return (jdouble) MSG_host_get_core_number(host);
176 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
177 msg_host_t host = jhost_get_native(env, jhost);
180 jxbt_throw_notbound(env, "host", jhost);
183 const char *name = env->GetStringUTFChars((jstring) jname, 0);
185 const char *property = MSG_host_get_property_value(host, name);
190 jobject jproperty = env->NewStringUTF(property);
192 env->ReleaseStringUTFChars((jstring) jname, name);
197 JNIEXPORT void JNICALL
198 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
199 msg_host_t host = jhost_get_native(env, jhost);
202 jxbt_throw_notbound(env, "host", jhost);
205 const char *name = env->GetStringUTFChars((jstring) jname, 0);
206 const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
207 char *value = xbt_strdup(value_java);
209 MSG_host_set_property_value(host, name, value);
211 env->ReleaseStringUTFChars((jstring) jvalue, value_java);
212 env->ReleaseStringUTFChars((jstring) jname, name);
215 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost)
217 msg_host_t host = jhost_get_native(env, jhost);
220 jxbt_throw_notbound(env, "host", jhost);
224 return (jboolean) MSG_host_is_on(host);
227 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost)
229 msg_host_t host = jhost_get_native(env, jhost);
234 jxbt_throw_notbound(env, "host", jhost);
240 xbt_dict_t dict = MSG_host_get_mounted_storage_list(host);
241 int count = xbt_dict_length(dict);
242 jclass cls = env->FindClass("org/simgrid/msg/Storage");
244 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
247 jxbt_throw_jni(env, "Storages table allocation failed");
251 xbt_dict_cursor_t cursor=nullptr;
252 const char* mount_name;
253 const char* storage_name;
255 xbt_dict_foreach(dict,cursor,mount_name,storage_name) {
256 jname = env->NewStringUTF(storage_name);
257 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
258 env->SetObjectArrayElement(jtable, index, jstorage);
261 xbt_dict_free(&dict);
265 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost)
267 msg_host_t host = jhost_get_native(env, jhost);
270 jxbt_throw_notbound(env, "host", jhost);
275 xbt_dynar_t dyn = sg_host_get_attached_storage_list(host);
276 jclass cls = jxbt_get_class(env, "java/lang/String");
277 jtable = env->NewObjectArray(static_cast<jsize>(xbt_dynar_length(dyn)), cls, nullptr);
279 const char* storage_name;
280 jstring jstorage_name;
281 xbt_dynar_foreach (dyn, index, storage_name) {
282 jstorage_name = env->NewStringUTF(storage_name);
283 env->SetObjectArrayElement(jtable, index, jstorage_name);
289 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost)
291 msg_host_t host = jhost_get_native(env, jhost);
294 jxbt_throw_notbound(env, "host", jhost);
297 return (jobjectArray)MSG_host_get_storage_content(host);
300 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
308 xbt_dynar_t table = MSG_hosts_as_dynar();
309 int count = xbt_dynar_length(table);
311 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
317 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
320 jxbt_throw_jni(env, "Hosts table allocation failed");
324 for (index = 0; index < count; index++) {
325 host = xbt_dynar_get_as(table,index,msg_host_t);
326 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
329 jname = env->NewStringUTF(host->cname());
331 jhost = Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
332 /* FIXME: leak of jname ? */
335 env->SetObjectArrayElement(jtable, index, jhost);
337 xbt_dynar_free(&table);
341 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname)
343 const char *name = env->GetStringUTFChars((jstring) jname, 0);
344 MSG_mailbox_set_async(name);
345 env->ReleaseStringUTFChars((jstring) jname, name);
348 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getConsumedEnergy (JNIEnv *env, jobject jhost)
350 msg_host_t host = jhost_get_native(env, jhost);
353 jxbt_throw_notbound(env, "host", jhost);
357 return MSG_host_get_consumed_energy(host);
360 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setPstate(JNIEnv* env, jobject jhost, jint pstate)
362 msg_host_t host = jhost_get_native(env, jhost);
363 MSG_host_set_pstate(host, pstate);
365 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstate(JNIEnv* env, jobject jhost)
367 msg_host_t host = jhost_get_native(env, jhost);
368 return MSG_host_get_pstate(host);
370 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstatesCount(JNIEnv* env, jobject jhost)
372 msg_host_t host = jhost_get_native(env, jhost);
373 return MSG_host_get_nb_pstates(host);
375 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCurrentPowerPeak(JNIEnv* env, jobject jhost)
377 msg_host_t host = jhost_get_native(env, jhost);
378 return MSG_host_get_current_power_peak(host);
380 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getPowerPeakAt(JNIEnv* env, jobject jhost, jint pstate)
382 msg_host_t host = jhost_get_native(env, jhost);
383 return MSG_host_get_power_peak_at(host, pstate);