1 /* Functions related to the java host instances. */
3 /* Copyright (c) 2007-2019. 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/plugins/load.h"
10 #include "simgrid/s4u/Host.hpp"
11 #include "simgrid/s4u/Storage.hpp"
13 #include "JavaContext.hpp"
15 #include "jmsg_host.h"
16 #include "jmsg_storage.h"
17 #include "jxbt_utilities.hpp"
19 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
21 static jmethodID jhost_method_Host_constructor;
22 static jfieldID jhost_field_Host_bind;
23 static jfieldID jhost_field_Host_name;
25 jobject jhost_new_instance(JNIEnv * env) {
26 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
27 return env->NewObject(cls, jhost_method_Host_constructor);
30 jobject jhost_ref(JNIEnv * env, jobject jhost) {
31 return env->NewGlobalRef(jhost);
34 void jhost_unref(JNIEnv * env, jobject jhost) {
35 env->DeleteGlobalRef(jhost);
38 void jhost_bind(jobject jhost, msg_host_t host, JNIEnv * env) {
39 env->SetLongField(jhost, jhost_field_Host_bind, (jlong) (uintptr_t) (host));
42 msg_host_t jhost_get_native(JNIEnv * env, jobject jhost) {
43 return (msg_host_t) (uintptr_t) env->GetLongField(jhost, jhost_field_Host_bind);
46 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_nativeInit(JNIEnv *env, jclass cls) {
47 jclass class_Host = env->FindClass("org/simgrid/msg/Host");
48 jhost_method_Host_constructor = env->GetMethodID(class_Host, "<init>", "()V");
49 jhost_field_Host_bind = jxbt_get_jfield(env,class_Host, "bind", "J");
50 jhost_field_Host_name = jxbt_get_jfield(env, class_Host, "name", "Ljava/lang/String;");
51 xbt_assert(class_Host && jhost_field_Host_name && jhost_method_Host_constructor && jhost_field_Host_bind,
52 "Native initialization of msg/Host failed. Please report that bug");
55 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls, jstring jname) {
57 /* get the C string from the java string */
58 if (jname == nullptr) {
59 jxbt_throw_null(env, "No host can have a null name");
62 const char *name = env->GetStringUTFChars(jname, 0);
63 /* get the host by name (the hosts are created during the grid resolution) */
64 msg_host_t host = MSG_host_by_name(name);
66 if (not host) { /* invalid name */
67 jxbt_throw_host_not_found(env, name);
68 env->ReleaseStringUTFChars(jname, name);
71 env->ReleaseStringUTFChars(jname, name);
73 if (not host->extension(JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
74 /* Instantiate a new java host */
75 jobject jhost = jhost_new_instance(env);
78 jxbt_throw_jni(env, "java host instantiation failed");
82 /* get a global reference to the newly created host */
83 jhost = jhost_ref(env, jhost);
86 jxbt_throw_jni(env, "new global ref allocation failed");
89 /* Sets the java host name */
90 env->SetObjectField(jhost, jhost_field_Host_name, jname);
91 /* bind the java host and the native host */
92 jhost_bind(jhost, host, env);
94 /* the native host data field is set with the global reference to the java host returned by this function */
95 host->extension_set(JAVA_HOST_LEVEL, (void *)jhost);
98 /* return the global reference to the java host instance */
99 return (jobject) host->extension(JAVA_HOST_LEVEL);
102 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
105 msg_host_t host = MSG_host_self();
107 if (not host->extension(JAVA_HOST_LEVEL)) {
108 /* the native host not yet associated with the java host instance */
110 /* instanciate a new java host instance */
111 jhost = jhost_new_instance(env);
114 jxbt_throw_jni(env, "java host instantiation failed");
118 /* get a global reference to the newly created host */
119 jhost = jhost_ref(env, jhost);
122 jxbt_throw_jni(env, "global ref allocation failed");
125 /* Sets the host name */
126 jobject jname = env->NewStringUTF(host->get_cname());
127 env->SetObjectField(jhost, jhost_field_Host_name, jname);
128 /* Bind & store it */
129 jhost_bind(jhost, host, env);
130 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
132 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
138 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
139 msg_host_t host = jhost_get_native(env, jhost);
143 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
144 msg_host_t host = jhost_get_native(env, jhost);
145 if (not simgrid::kernel::context::ForcefulKillException::try_n_catch([host]() { MSG_host_off(host); }))
146 jxbt_throw_by_name(env, "org/simgrid/msg/ProcessKilledError", "Host turned off");
149 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
150 xbt_dynar_t hosts = MSG_hosts_as_dynar();
151 int nb_host = xbt_dynar_length(hosts);
152 xbt_dynar_free(&hosts);
153 return (jint) nb_host;
156 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env, jobject jhost) {
157 msg_host_t host = jhost_get_native(env, jhost);
160 jxbt_throw_notbound(env, "host", jhost);
164 return (jdouble) MSG_host_get_speed(host);
167 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env, jobject jhost) {
168 msg_host_t host = jhost_get_native(env, jhost);
171 jxbt_throw_notbound(env, "host", jhost);
175 return (jdouble) MSG_host_get_core_number(host);
178 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
179 msg_host_t host = jhost_get_native(env, jhost);
182 jxbt_throw_notbound(env, "host", jhost);
185 const char *name = env->GetStringUTFChars((jstring) jname, 0);
187 const char *property = MSG_host_get_property_value(host, name);
192 jobject jproperty = env->NewStringUTF(property);
194 env->ReleaseStringUTFChars((jstring) jname, name);
199 JNIEXPORT void JNICALL
200 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
201 msg_host_t host = jhost_get_native(env, jhost);
204 jxbt_throw_notbound(env, "host", jhost);
207 const char *name = env->GetStringUTFChars((jstring) jname, 0);
208 const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
209 char *value = xbt_strdup(value_java);
211 MSG_host_set_property_value(host, name, value);
213 env->ReleaseStringUTFChars((jstring) jvalue, value_java);
214 env->ReleaseStringUTFChars((jstring) jname, name);
217 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost)
219 msg_host_t host = jhost_get_native(env, jhost);
222 jxbt_throw_notbound(env, "host", jhost);
226 return (jboolean) MSG_host_is_on(host);
229 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost)
231 msg_host_t host = jhost_get_native(env, jhost);
236 jxbt_throw_notbound(env, "host", jhost);
242 std::unordered_map<std::string, msg_storage_t> mounted_storages = host->get_mounted_storages();
243 int count = mounted_storages.size();
244 jclass cls = env->FindClass("org/simgrid/msg/Storage");
246 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
249 jxbt_throw_jni(env, "Storages table allocation failed");
253 for (auto const& elm : mounted_storages) {
254 jname = env->NewStringUTF(elm.second->get_cname());
255 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
256 env->SetObjectArrayElement(jtable, index, jstorage);
262 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost)
264 msg_host_t host = jhost_get_native(env, jhost);
267 jxbt_throw_notbound(env, "host", jhost);
272 xbt_dynar_t dyn = sg_host_get_attached_storage_list(host);
273 jclass cls = jxbt_get_class(env, "java/lang/String");
274 jtable = env->NewObjectArray(static_cast<jsize>(xbt_dynar_length(dyn)), cls, nullptr);
276 const char* storage_name;
277 jstring jstorage_name;
278 xbt_dynar_foreach (dyn, index, storage_name) {
279 jstorage_name = env->NewStringUTF(storage_name);
280 env->SetObjectArrayElement(jtable, index, jstorage_name);
282 xbt_dynar_free_container(&dyn);
286 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost)
288 msg_host_t host = jhost_get_native(env, jhost);
291 jxbt_throw_notbound(env, "host", jhost);
294 return (jobjectArray)MSG_host_get_storage_content(host);
297 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
300 xbt_dynar_t table = MSG_hosts_as_dynar();
301 int count = xbt_dynar_length(table);
303 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
307 jobjectArray jtable = env->NewObjectArray((jsize)count, cls, nullptr);
310 jxbt_throw_jni(env, "Hosts table allocation failed");
314 for (int index = 0; index < count; index++) {
315 msg_host_t host = xbt_dynar_get_as(table, index, msg_host_t);
316 jobject jhost = static_cast<jobject>(host->extension(JAVA_HOST_LEVEL));
319 jstring jname = env->NewStringUTF(host->get_cname());
320 jhost = Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
323 env->SetObjectArrayElement(jtable, index, jhost);
325 xbt_dynar_free(&table);
329 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname)
331 const char *name = env->GetStringUTFChars((jstring) jname, 0);
332 sg_mailbox_set_receiver(name);
333 env->ReleaseStringUTFChars((jstring) jname, name);
336 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_updateAllEnergyConsumptions(JNIEnv* env, jclass cls)
338 sg_host_energy_update_all();
341 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getConsumedEnergy (JNIEnv *env, jobject jhost)
343 msg_host_t host = jhost_get_native(env, jhost);
346 jxbt_throw_notbound(env, "host", jhost);
350 return MSG_host_get_consumed_energy(host);
353 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setPstate(JNIEnv* env, jobject jhost, jint pstate)
355 msg_host_t host = jhost_get_native(env, jhost);
356 MSG_host_set_pstate(host, pstate);
358 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstate(JNIEnv* env, jobject jhost)
360 msg_host_t host = jhost_get_native(env, jhost);
361 return MSG_host_get_pstate(host);
363 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstatesCount(JNIEnv* env, jobject jhost)
365 msg_host_t host = jhost_get_native(env, jhost);
366 return MSG_host_get_nb_pstates(host);
368 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCurrentPowerPeak(JNIEnv* env, jobject jhost)
370 msg_host_t host = jhost_get_native(env, jhost);
371 return MSG_host_get_speed(host);
373 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getPowerPeakAt(JNIEnv* env, jobject jhost, jint pstate)
375 msg_host_t host = jhost_get_native(env, jhost);
376 return MSG_host_get_power_peak_at(host, pstate);
379 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getLoad(JNIEnv* env, jobject jhost)
381 msg_host_t host = jhost_get_native(env, jhost);
382 return MSG_host_get_load(host);
385 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCurrentLoad (JNIEnv *env, jobject jhost)
387 msg_host_t host = jhost_get_native(env, jhost);
390 jxbt_throw_notbound(env, "host", jhost);
394 return MSG_host_get_current_load(host);
397 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getComputedFlops (JNIEnv *env, jobject jhost)
399 msg_host_t host = jhost_get_native(env, jhost);
402 jxbt_throw_notbound(env, "host", jhost);
406 return MSG_host_get_computed_flops(host);
409 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getAvgLoad (JNIEnv *env, jobject jhost)
411 msg_host_t host = jhost_get_native(env, jhost);
414 jxbt_throw_notbound(env, "host", jhost);
418 return MSG_host_get_avg_load(host);