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 xbt_assert(class_Host && jhost_field_Host_name && jhost_method_Host_constructor && jhost_field_Host_bind,
70 "Native initialization of msg/Host failed. Please report that bug");
73 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls, jstring jname) {
75 /* get the C string from the java string */
76 if (jname == nullptr) {
77 jxbt_throw_null(env,bprintf("No host can have a null name"));
80 const char *name = env->GetStringUTFChars(jname, 0);
81 /* get the host by name (the hosts are created during the grid resolution) */
82 msg_host_t host = MSG_host_by_name(name);
84 if (!host) { /* invalid name */
85 jxbt_throw_host_not_found(env, name);
86 env->ReleaseStringUTFChars(jname, name);
89 env->ReleaseStringUTFChars(jname, name);
91 if (!host->extension(JAVA_HOST_LEVEL)) { /* native host not associated yet with java host */
92 /* Instantiate a new java host */
93 jobject jhost = jhost_new_instance(env);
96 jxbt_throw_jni(env, "java host instantiation failed");
100 /* get a global reference to the newly created host */
101 jhost = jhost_ref(env, jhost);
104 jxbt_throw_jni(env, "new global ref allocation failed");
107 /* Sets the java host name */
108 env->SetObjectField(jhost, jhost_field_Host_name, jname);
109 /* bind the java host and the native host */
110 jhost_bind(jhost, host, env);
112 /* the native host data field is set with the global reference to the java host returned by this function */
113 host->extension_set(JAVA_HOST_LEVEL, (void *)jhost);
116 /* return the global reference to the java host instance */
117 return (jobject) host->extension(JAVA_HOST_LEVEL);
120 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
123 msg_host_t host = MSG_host_self();
125 if (!host->extension(JAVA_HOST_LEVEL)) {
126 /* the native host not yet associated with the java host instance */
128 /* instanciate a new java host instance */
129 jhost = jhost_new_instance(env);
132 jxbt_throw_jni(env, "java host instantiation failed");
136 /* get a global reference to the newly created host */
137 jhost = jhost_ref(env, jhost);
140 jxbt_throw_jni(env, "global ref allocation failed");
143 /* Sets the host name */
144 jobject jname = env->NewStringUTF(host->cname());
145 env->SetObjectField(jhost, jhost_field_Host_name, jname);
146 /* Bind & store it */
147 jhost_bind(jhost, host, env);
148 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
150 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
156 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_on(JNIEnv *env, jobject jhost) {
157 msg_host_t host = jhost_get_native(env, jhost);
161 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_off(JNIEnv *env, jobject jhost) {
162 msg_host_t host = jhost_get_native(env, jhost);
166 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
167 xbt_dynar_t hosts = MSG_hosts_as_dynar();
168 int nb_host = xbt_dynar_length(hosts);
169 xbt_dynar_free(&hosts);
170 return (jint) nb_host;
173 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env, jobject jhost) {
174 msg_host_t host = jhost_get_native(env, jhost);
177 jxbt_throw_notbound(env, "host", jhost);
181 return (jdouble) MSG_host_get_speed(host);
184 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCoreNumber(JNIEnv * env, jobject jhost) {
185 msg_host_t host = jhost_get_native(env, jhost);
188 jxbt_throw_notbound(env, "host", jhost);
192 return (jdouble) MSG_host_get_core_number(host);
195 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Host_getProperty(JNIEnv *env, jobject jhost, jobject jname) {
196 msg_host_t host = jhost_get_native(env, jhost);
199 jxbt_throw_notbound(env, "host", jhost);
202 const char *name = env->GetStringUTFChars((jstring) jname, 0);
204 const char *property = MSG_host_get_property_value(host, name);
209 jobject jproperty = env->NewStringUTF(property);
211 env->ReleaseStringUTFChars((jstring) jname, name);
216 JNIEXPORT void JNICALL
217 Java_org_simgrid_msg_Host_setProperty(JNIEnv *env, jobject jhost, jobject jname, jobject jvalue) {
218 msg_host_t host = jhost_get_native(env, jhost);
221 jxbt_throw_notbound(env, "host", jhost);
224 const char *name = env->GetStringUTFChars((jstring) jname, 0);
225 const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
226 char *value = xbt_strdup(value_java);
228 MSG_host_set_property_value(host, name, value);
230 env->ReleaseStringUTFChars((jstring) jvalue, value_java);
231 env->ReleaseStringUTFChars((jstring) jname, name);
234 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Host_isOn(JNIEnv * env, jobject jhost)
236 msg_host_t host = jhost_get_native(env, jhost);
239 jxbt_throw_notbound(env, "host", jhost);
243 return (jboolean) MSG_host_is_on(host);
246 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getMountedStorage(JNIEnv * env, jobject jhost)
248 msg_host_t host = jhost_get_native(env, jhost);
253 jxbt_throw_notbound(env, "host", jhost);
259 xbt_dict_t dict = MSG_host_get_mounted_storage_list(host);
260 int count = xbt_dict_length(dict);
261 jclass cls = env->FindClass("org/simgrid/msg/Storage");
263 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
266 jxbt_throw_jni(env, "Storages table allocation failed");
270 xbt_dict_cursor_t cursor=nullptr;
271 const char* mount_name;
272 const char* storage_name;
274 xbt_dict_foreach(dict,cursor,mount_name,storage_name) {
275 jname = env->NewStringUTF(storage_name);
276 jstorage = Java_org_simgrid_msg_Storage_getByName(env,cls,jname);
277 env->SetObjectArrayElement(jtable, index, jstorage);
280 xbt_dict_free(&dict);
284 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getAttachedStorage(JNIEnv * env, jobject jhost)
286 msg_host_t host = jhost_get_native(env, jhost);
289 jxbt_throw_notbound(env, "host", jhost);
294 xbt_dynar_t dyn = MSG_host_get_attached_storage_list(host);
295 int count = xbt_dynar_length(dyn);
296 jclass cls = jxbt_get_class(env, "java/lang/String");
297 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
300 jstring jstorage_name;
301 for (index = 0; index < count; index++) {
302 storage_name = xbt_dynar_get_as(dyn,index,char*);
303 jstorage_name = env->NewStringUTF(storage_name);
304 env->SetObjectArrayElement(jtable, index, jstorage_name);
310 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_getStorageContent(JNIEnv * env, jobject jhost)
312 msg_host_t host = jhost_get_native(env, jhost);
315 jxbt_throw_notbound(env, "host", jhost);
318 return (jobjectArray)MSG_host_get_storage_content(host);
321 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_Host_all(JNIEnv * env, jclass cls_arg)
329 xbt_dynar_t table = MSG_hosts_as_dynar();
330 int count = xbt_dynar_length(table);
332 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
338 jtable = env->NewObjectArray((jsize) count, cls, nullptr);
341 jxbt_throw_jni(env, "Hosts table allocation failed");
345 for (index = 0; index < count; index++) {
346 host = xbt_dynar_get_as(table,index,msg_host_t);
347 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
350 jname = env->NewStringUTF(host->cname());
352 jhost = Java_org_simgrid_msg_Host_getByName(env, cls_arg, jname);
353 /* FIXME: leak of jname ? */
356 env->SetObjectArrayElement(jtable, index, jhost);
358 xbt_dynar_free(&table);
362 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setAsyncMailbox(JNIEnv * env, jclass cls_arg, jobject jname)
364 const char *name = env->GetStringUTFChars((jstring) jname, 0);
365 MSG_mailbox_set_async(name);
366 env->ReleaseStringUTFChars((jstring) jname, name);
369 #include "simgrid/plugins/energy.h"
370 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getConsumedEnergy (JNIEnv *env, jobject jhost)
372 msg_host_t host = jhost_get_native(env, jhost);
375 jxbt_throw_notbound(env, "host", jhost);
379 return MSG_host_get_consumed_energy(host);
382 JNIEXPORT void JNICALL Java_org_simgrid_msg_Host_setPstate(JNIEnv* env, jobject jhost, jint pstate)
384 msg_host_t host = jhost_get_native(env, jhost);
385 MSG_host_set_pstate(host, pstate);
387 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstate(JNIEnv* env, jobject jhost)
389 msg_host_t host = jhost_get_native(env, jhost);
390 return MSG_host_get_pstate(host);
392 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Host_getPstatesCount(JNIEnv* env, jobject jhost)
394 msg_host_t host = jhost_get_native(env, jhost);
395 return MSG_host_get_nb_pstates(host);
397 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getCurrentPowerPeak(JNIEnv* env, jobject jhost)
399 msg_host_t host = jhost_get_native(env, jhost);
400 return MSG_host_get_current_power_peak(host);
402 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Host_getPowerPeakAt(JNIEnv* env, jobject jhost, jint pstate)
404 msg_host_t host = jhost_get_native(env, jhost);
405 return MSG_host_get_power_peak_at(host, pstate);