1 /* Functions related to the java host instances. */
3 /* Copyright (c) 2007-2018. 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"
10 #include "simgrid/s4u/Storage.hpp"
13 #include "jmsg_host.h"
14 #include "jmsg_storage.h"
15 #include "jxbt_utilities.hpp"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
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 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_nativeInit(JNIEnv *env, jclass cls) {
45 jclass class_Host = env->FindClass("org/simgrid/msg/Host");
46 jhost_method_Host_constructor = env->GetMethodID(class_Host, "<init>", "()V");
47 jhost_field_Host_bind = jxbt_get_jfield(env,class_Host, "bind", "J");
48 jhost_field_Host_name = jxbt_get_jfield(env, class_Host, "name", "Ljava/lang/String;");
49 xbt_assert(class_Host && jhost_field_Host_name && jhost_method_Host_constructor && jhost_field_Host_bind,
50 "Native initialization of msg/Host failed. Please report that bug");
53 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls, jstring jname) {
55 /* get the C string from the java string */
56 if (jname == nullptr) {
57 jxbt_throw_null(env, "No host can have a null name");
60 const char *name = env->GetStringUTFChars(jname, 0);
61 /* get the host by name (the hosts are created during the grid resolution) */
62 msg_host_t host = MSG_host_by_name(name);
64 if (not host) { /* invalid name */
65 jxbt_throw_host_not_found(env, name);
66 env->ReleaseStringUTFChars(jname, name);
69 env->ReleaseStringUTFChars(jname, name);
71 if (not host->extension(JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
72 /* Instantiate a new java host */
73 jobject jhost = jhost_new_instance(env);
76 jxbt_throw_jni(env, "java host instantiation failed");
80 /* get a global reference to the newly created host */
81 jhost = jhost_ref(env, jhost);
84 jxbt_throw_jni(env, "new global ref allocation failed");
87 /* Sets the java host name */
88 env->SetObjectField(jhost, jhost_field_Host_name, jname);
89 /* bind the java host and the native host */
90 jhost_bind(jhost, host, env);
92 /* the native host data field is set with the global reference to the java host returned by this function */
93 host->extension_set(JAVA_HOST_LEVEL, (void *)jhost);
96 /* return the global reference to the java host instance */
97 return (jobject) host->extension(JAVA_HOST_LEVEL);
100 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
103 msg_host_t host = MSG_host_self();
105 if (not host->extension(JAVA_HOST_LEVEL)) {
106 /* the native host not yet associated with the java host instance */
108 /* instanciate a new java host instance */
109 jhost = jhost_new_instance(env);
112 jxbt_throw_jni(env, "java host instantiation failed");
116 /* get a global reference to the newly created host */
117 jhost = jhost_ref(env, jhost);
120 jxbt_throw_jni(env, "global ref allocation failed");
123 /* Sets the host name */
124 jobject jname = env->NewStringUTF(host->get_cname());
125 env->SetObjectField(jhost, jhost_field_Host_name, jname);
126 /* Bind & store it */
127 jhost_bind(jhost, host, env);
128 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
130 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
136 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
137 msg_host_t host = jhost_get_native(env, jhost);
141 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
142 msg_host_t host = jhost_get_native(env, jhost);
146 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
147 xbt_dynar_t hosts = MSG_hosts_as_dynar();
148 int nb_host = xbt_dynar_length(hosts);
149 xbt_dynar_free(&hosts);
150 return (jint) nb_host;
153 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env, jobject jhost) {
154 msg_host_t host = jhost_get_native(env, jhost);
157 jxbt_throw_notbound(env, "host", jhost);
161 return (jdouble) MSG_host_get_speed(host);
164 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env, jobject jhost) {
165 msg_host_t host = jhost_get_native(env, jhost);
168 jxbt_throw_notbound(env, "host", jhost);
172 return (jdouble) MSG_host_get_core_number(host);
175 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
176 msg_host_t host = jhost_get_native(env, jhost);
179 jxbt_throw_notbound(env, "host", jhost);
182 const char *name = env->GetStringUTFChars((jstring) jname, 0);
184 const char *property = MSG_host_get_property_value(host, name);
189 jobject jproperty = env->NewStringUTF(property);
191 env->ReleaseStringUTFChars((jstring) jname, name);
196 JNIEXPORT void JNICALL
197 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
198 msg_host_t host = jhost_get_native(env, jhost);
201 jxbt_throw_notbound(env, "host", jhost);
204 const char *name = env->GetStringUTFChars((jstring) jname, 0);
205 const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
206 char *value = xbt_strdup(value_java);
208 MSG_host_set_property_value(host, name, value);
210 env->ReleaseStringUTFChars((jstring) jvalue, value_java);
211 env->ReleaseStringUTFChars((jstring) jname, name);
214 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost)
216 msg_host_t host = jhost_get_native(env, jhost);
219 jxbt_throw_notbound(env, "host", jhost);
223 return (jboolean) MSG_host_is_on(host);
226 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost)
228 msg_host_t host = jhost_get_native(env, jhost);
233 jxbt_throw_notbound(env, "host", jhost);
239 std::unordered_map<std::string, msg_storage_t> mounted_storages = host->get_mounted_storages();
240 int count = mounted_storages.size();
241 jclass cls = env->FindClass("org/simgrid/msg/Storage");
243 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
246 jxbt_throw_jni(env, "Storages table allocation failed");
250 for (auto const& elm : mounted_storages) {
251 jname = env->NewStringUTF(elm.second->get_cname());
252 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
253 env->SetObjectArrayElement(jtable, index, jstorage);
259 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost)
261 msg_host_t host = jhost_get_native(env, jhost);
264 jxbt_throw_notbound(env, "host", jhost);
269 xbt_dynar_t dyn = sg_host_get_attached_storage_list(host);
270 jclass cls = jxbt_get_class(env, "java/lang/String");
271 jtable = env->NewObjectArray(static_cast<jsize>(xbt_dynar_length(dyn)), cls, nullptr);
273 const char* storage_name;
274 jstring jstorage_name;
275 xbt_dynar_foreach (dyn, index, storage_name) {
276 jstorage_name = env->NewStringUTF(storage_name);
277 env->SetObjectArrayElement(jtable, index, jstorage_name);
279 xbt_dynar_free_container(&dyn);
283 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost)
285 msg_host_t host = jhost_get_native(env, jhost);
288 jxbt_throw_notbound(env, "host", jhost);
291 return (jobjectArray)MSG_host_get_storage_content(host);
294 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
297 xbt_dynar_t table = MSG_hosts_as_dynar();
298 int count = xbt_dynar_length(table);
300 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
304 jobjectArray jtable = env->NewObjectArray((jsize)count, cls, nullptr);
307 jxbt_throw_jni(env, "Hosts table allocation failed");
311 for (int index = 0; index < count; index++) {
312 msg_host_t host = xbt_dynar_get_as(table, index, msg_host_t);
313 jobject jhost = static_cast<jobject>(host->extension(JAVA_HOST_LEVEL));
316 jstring jname = env->NewStringUTF(host->get_cname());
317 jhost = Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
320 env->SetObjectArrayElement(jtable, index, jhost);
322 xbt_dynar_free(&table);
326 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname)
328 const char *name = env->GetStringUTFChars((jstring) jname, 0);
329 sg_mailbox_set_receiver(name);
330 env->ReleaseStringUTFChars((jstring) jname, name);
333 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_updateAllEnergyConsumptions(JNIEnv* env, jclass cls)
335 sg_host_energy_update_all();
338 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getConsumedEnergy (JNIEnv *env, jobject jhost)
340 msg_host_t host = jhost_get_native(env, jhost);
343 jxbt_throw_notbound(env, "host", jhost);
347 return MSG_host_get_consumed_energy(host);
350 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setPstate(JNIEnv* env, jobject jhost, jint pstate)
352 msg_host_t host = jhost_get_native(env, jhost);
353 MSG_host_set_pstate(host, pstate);
355 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstate(JNIEnv* env, jobject jhost)
357 msg_host_t host = jhost_get_native(env, jhost);
358 return MSG_host_get_pstate(host);
360 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstatesCount(JNIEnv* env, jobject jhost)
362 msg_host_t host = jhost_get_native(env, jhost);
363 return MSG_host_get_nb_pstates(host);
365 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCurrentPowerPeak(JNIEnv* env, jobject jhost)
367 msg_host_t host = jhost_get_native(env, jhost);
368 return MSG_host_get_speed(host);
370 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getPowerPeakAt(JNIEnv* env, jobject jhost, jint pstate)
372 msg_host_t host = jhost_get_native(env, jhost);
373 return MSG_host_get_power_peak_at(host, pstate);