#include "jmsg_host.h"
#include "jxbt_utilities.h"
-jobject jhost_new_instance(JNIEnv * env)
-{
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
+
+jobject jhost_new_instance(JNIEnv * env) {
jclass cls = jxbt_get_class(env, "org/simgrid/msg/Host");
jmethodID constructor = jxbt_get_jmethod(env, cls, "<init>", "()V");
return (*env)->NewObject(env, cls, constructor);
}
-jobject jhost_ref(JNIEnv * env, jobject jhost)
-{
+jobject jhost_ref(JNIEnv * env, jobject jhost) {
return (*env)->NewGlobalRef(env, jhost);
}
-void jhost_unref(JNIEnv * env, jobject jhost)
-{
+void jhost_unref(JNIEnv * env, jobject jhost) {
(*env)->DeleteGlobalRef(env, jhost);
}
-void jhost_bind(jobject jhost, m_host_t host, JNIEnv * env)
-{
+void jhost_bind(jobject jhost, m_host_t host, JNIEnv * env) {
jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Host", "bind", "J");
if (!id)
(*env)->SetLongField(env, jhost, id, (jlong) (long) (host));
}
-m_host_t jhost_get_native(JNIEnv * env, jobject jhost)
-{
+m_host_t jhost_get_native(JNIEnv * env, jobject jhost) {
jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Host", "bind", "J");
if (!id)
return (m_host_t) (long) (*env)->GetLongField(env, jhost, id);
}
-const char *jhost_get_name(jobject jhost, JNIEnv * env)
-{
- m_host_t host = jhost_get_native(env, jhost);
- return (const char *) host->name;
-}
-
-void jhost_set_name(jobject jhost, jstring jname, JNIEnv * env)
-{
- const char *name;
+const char *jhost_get_name(jobject jhost, JNIEnv * env) {
m_host_t host = jhost_get_native(env, jhost);
-
- name = (*env)->GetStringUTFChars(env, jname, 0);
-
- if (host->name)
- free(host->name);
-
- host->name = xbt_strdup(name);
- (*env)->ReleaseStringUTFChars(env, jname, name);
+ return MSG_host_get_name(host);
}
-jboolean jhost_is_valid(jobject jhost, JNIEnv * env)
-{
+jboolean jhost_is_valid(jobject jhost, JNIEnv * env) {
jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Host", "bind", "J");
if (!id)
return JNI_FALSE;
}
}
+
+JNIEXPORT jobject JNICALL
+Java_org_simgrid_msg_Host_getByName(JNIEnv * env, jclass cls,
+ jstring jname) {
+ m_host_t host; /* native host */
+ jobject jhost; /* global reference to the java host instance returned */
+
+ /* get the C string from the java string */
+ const char *name = (*env)->GetStringUTFChars(env, jname, 0);
+ if (name == NULL) {
+ jxbt_throw_null(env,bprintf("No host can have a null name"));
+ return NULL;
+ }
+ XBT_DEBUG("Looking for host '%s'",name);
+ /* get the host by name (the hosts are created during the grid resolution) */
+ host = MSG_get_host_by_name(name);
+ XBT_DEBUG("MSG gave %p as native host", host);
+
+ if (!host) { /* invalid name */
+ jxbt_throw_host_not_found(env, name);
+ (*env)->ReleaseStringUTFChars(env, jname, name);
+ return NULL;
+ }
+ (*env)->ReleaseStringUTFChars(env, jname, name);
+
+ if (!MSG_host_get_data(host)) { /* native host not associated yet with java host */
+
+ /* Instantiate a new java host */
+ jhost = jhost_new_instance(env);
+
+ if (!jhost) {
+ jxbt_throw_jni(env, "java host instantiation failed");
+ return NULL;
+ }
+
+ /* get a global reference to the newly created host */
+ jhost = jhost_ref(env, jhost);
+
+ if (!jhost) {
+ jxbt_throw_jni(env, "new global ref allocation failed");
+ return NULL;
+ }
+
+ /* bind the java host and the native host */
+ jhost_bind(jhost, host, env);
+
+ /* the native host data field is set with the global reference to the
+ * java host returned by this function
+ */
+ MSG_host_set_data(host, (void *) jhost);
+ }
+
+ /* return the global reference to the java host instance */
+ return (jobject) MSG_host_get_data(host);
+}
+
+JNIEXPORT jobject JNICALL
+Java_org_simgrid_msg_Host_currentHost(JNIEnv * env, jclass cls) {
+ jobject jhost;
+
+ m_host_t host = MSG_host_self();
+
+ if (!MSG_host_get_data(host)) {
+ /* the native host not yet associated with the java host instance */
+
+ /* instanciate a new java host instance */
+ jhost = jhost_new_instance(env);
+
+ if (!jhost) {
+ jxbt_throw_jni(env, "java host instantiation failed");
+ return NULL;
+ }
+
+ /* get a global reference to the newly created host */
+ jhost = jhost_ref(env, jhost);
+
+ if (!jhost) {
+ jxbt_throw_jni(env, "global ref allocation failed");
+ return NULL;
+ }
+
+ /* Bind & store it */
+ jhost_bind(jhost, host, env);
+ MSG_host_set_data(host, (void *) jhost);
+ } else {
+ jhost = (jobject) MSG_host_get_data(host);
+ }
+
+ return jhost;
+}
+
+JNIEXPORT jstring JNICALL
+Java_org_simgrid_msg_Host_getName(JNIEnv * env,
+ jobject jhost) {
+ m_host_t host = jhost_get_native(env, jhost);
+ const char* name;
+
+ if (!host) {
+ jxbt_throw_notbound(env, "host", jhost);
+ return NULL;
+ }
+
+ name = MSG_host_get_name(host);
+ if (!name)
+ xbt_die("This host has no name...");
+
+ return (*env)->NewStringUTF(env, name);
+}
+
+JNIEXPORT jint JNICALL
+Java_org_simgrid_msg_Host_getCount(JNIEnv * env, jclass cls) {
+ xbt_dynar_t hosts = MSG_hosts_as_dynar();
+ int nb_host = xbt_dynar_length(hosts);
+ xbt_dynar_free(&hosts);
+ return (jint) nb_host;
+}
+
+JNIEXPORT jdouble JNICALL
+Java_org_simgrid_msg_Host_getSpeed(JNIEnv * env,
+ jobject jhost) {
+ m_host_t host = jhost_get_native(env, jhost);
+
+ if (!host) {
+ jxbt_throw_notbound(env, "host", jhost);
+ return -1;
+ }
+
+ return (jdouble) MSG_get_host_speed(host);
+}
+JNIEXPORT jint JNICALL
+Java_org_simgrid_msg_Host_getLoad(JNIEnv * env, jobject jhost) {
+ m_host_t host = jhost_get_native(env, jhost);
+
+ if (!host) {
+ jxbt_throw_notbound(env, "host", jhost);
+ return -1;
+ }
+
+ return (jint) MSG_get_host_msgload(host);
+}
+JNIEXPORT jboolean JNICALL
+Java_org_simgrid_msg_Host_isAvail(JNIEnv * env, jobject jhost) {
+ m_host_t host = jhost_get_native(env, jhost);
+
+ if (!host) {
+ jxbt_throw_notbound(env, "host", jhost);
+ return 0;
+ }
+
+ return (jboolean) MSG_host_is_avail(host);
+}
