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. */
11 #include <xbt/dynar.h>
13 #include <simgrid/s4u/host.hpp>
15 #include "simgrid/msg.h"
17 #include "jmsg_host.h"
18 #include "jxbt_utilities.h"
21 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
23 static jmethodID jas_method_As_constructor;
24 static jfieldID jas_field_As_bind;
26 jobject jas_new_instance(JNIEnv * env) {
27 jclass cls = jxbt_get_class(env, "org/simgrid/msg/As");
28 return env->NewObject(cls, jas_method_As_constructor);
31 jobject jas_ref(JNIEnv * env, jobject jas) {
32 return env->NewGlobalRef(jas);
35 void jas_unref(JNIEnv * env, jobject jas) {
36 env->DeleteGlobalRef(jas);
39 void jas_bind(jobject jas, msg_as_t as, JNIEnv * env) {
40 env->SetLongField(jas, jas_field_As_bind, (jlong) (uintptr_t) (as));
43 msg_as_t jas_get_native(JNIEnv * env, jobject jas) {
44 return (msg_as_t) (uintptr_t) env->GetLongField(jas, jas_field_As_bind);
47 JNIEXPORT void JNICALL Java_org_simgrid_msg_As_nativeInit(JNIEnv *env, jclass cls) {
48 jclass class_As = env->FindClass("org/simgrid/msg/As");
49 jas_method_As_constructor = env->GetMethodID(class_As, "<init>", "()V");
50 jas_field_As_bind = jxbt_get_jfield(env,class_As, "bind", "J");
51 if (!class_As || !jas_method_As_constructor || !jas_field_As_bind) {
52 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
56 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_As_getName(JNIEnv * env, jobject jas) {
57 msg_as_t as = jas_get_native(env, jas);
58 return env->NewStringUTF(MSG_environment_as_get_name(as));
61 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_As_getSons(JNIEnv * env, jobject jas) {
66 msg_as_t self_as = jas_get_native(env, jas);
68 xbt_dict_t dict = MSG_environment_as_get_routing_sons(self_as);
69 int count = xbt_dict_length(dict);
70 jclass cls = env->FindClass("org/simgrid/msg/As");
76 jtable = env->NewObjectArray(static_cast<jsize>(count), cls, nullptr);
79 jxbt_throw_jni(env, "Hosts table allocation failed");
83 xbt_dict_cursor_t cursor=nullptr;
86 xbt_dict_foreach(dict,cursor,key,tmp_as) {
87 tmp_jas = jas_new_instance(env);
89 jxbt_throw_jni(env, "java As instantiation failed");
92 tmp_jas = jas_ref(env, tmp_jas);
94 jxbt_throw_jni(env, "new global ref allocation failed");
97 jas_bind(tmp_jas, tmp_as, env);
99 env->SetObjectArrayElement(jtable, index, tmp_jas);
105 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_As_getProperty(JNIEnv *env, jobject jas, jobject jname) {
106 msg_as_t as = jas_get_native(env, jas);
109 jxbt_throw_notbound(env, "as", jas);
112 const char *name = env->GetStringUTFChars(static_cast<jstring>(jname), 0);
114 const char *property = MSG_environment_as_get_property_value(as, name);
119 jobject jproperty = env->NewStringUTF(property);
121 env->ReleaseStringUTFChars(static_cast<jstring>(jname), name);
126 JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_As_getHosts(JNIEnv * env, jobject jas)
133 msg_as_t as = jas_get_native(env, jas);
135 xbt_dynar_t table = MSG_environment_as_get_hosts(as);
136 int count = xbt_dynar_length(table);
138 jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
144 jtable = env->NewObjectArray(static_cast<jsize>(count), cls, nullptr);
147 jxbt_throw_jni(env, "Hosts table allocation failed");
151 for (index = 0; index < count; index++) {
152 host = xbt_dynar_get_as(table,index,msg_host_t);
154 jhost = static_cast<jobject>(host->extension(JAVA_HOST_LEVEL));
156 jname = env->NewStringUTF(MSG_host_get_name(host));
158 jhost = Java_org_simgrid_msg_Host_getByName(env, cls, jname);
160 /* FIXME: leak of jname ? */
163 env->SetObjectArrayElement(jtable, index, jhost);
165 xbt_dynar_free(&table);