SG_BEGIN_DECL()
+extern int JAVA_HOST_LEVEL;
static jfieldID jvm_field_bind;
void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm)
MSG_vm_set_bound(vm, bound);
}
-JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_create(JNIEnv* env, jobject jvm, jobject jhost, jstring jname,
- jint jramsize, jint jmig_netspeed, jint jdp_intensity)
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_create(JNIEnv* env, jobject jVm, jobject jHost, jstring jname,
+ jint coreAmount, jint jramsize, jint jmig_netspeed,
+ jint jdp_intensity)
{
- msg_host_t host = jhost_get_native(env, jhost);
+ msg_host_t host = jhost_get_native(env, jHost);
const char* name = env->GetStringUTFChars(jname, 0);
- msg_vm_t vm = MSG_vm_create(host, name, static_cast<int>(jramsize), static_cast<int>(jmig_netspeed),
- static_cast<int>(jdp_intensity));
+ msg_vm_t vm = MSG_vm_create(host, name, static_cast<int>(coreAmount), static_cast<int>(jramsize),
+ static_cast<int>(jmig_netspeed), static_cast<int>(jdp_intensity));
env->ReleaseStringUTFChars(jname, name);
- jvm_bind(env, jvm, vm);
+ jvm_bind(env, jVm, vm);
+ jVm = env->NewWeakGlobalRef(jVm);
+ // We use the extension level of the host, even if that's somehow disturbing
+ vm->extension_set(JAVA_HOST_LEVEL, (void*)jVm);
+}
+
+JNIEXPORT jobjectArray JNICALL Java_org_simgrid_msg_VM_all(JNIEnv* env, jclass cls_arg)
+{
+ xbt_dynar_t hosts = MSG_hosts_as_dynar();
+ std::vector<jobject> vms;
+
+ unsigned int it;
+ msg_host_t h;
+ xbt_dynar_foreach (hosts, it, h) {
+ simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(h);
+ if (vm != nullptr && vm->getState() != SURF_VM_STATE_DESTROYED) {
+ jobject jvm = static_cast<jobject>(vm->extension(JAVA_HOST_LEVEL));
+ vms.push_back(jvm);
+ }
+ }
+ xbt_dynar_free(&hosts);
+
+ vms.shrink_to_fit();
+ int count = vms.size();
+
+ jclass cls = jxbt_get_class(env, "org/simgrid/msg/VM");
+ if (not cls)
+ return nullptr;
+
+ jobjectArray jtable = env->NewObjectArray((jsize)count, cls, nullptr);
+ if (not jtable) {
+ jxbt_throw_jni(env, "Hosts table allocation failed");
+ return nullptr;
+ }
+
+ for (int index = 0; index < count; index++) {
+ jobject jhost = vms.at(index);
+ env->SetObjectArrayElement(jtable, index, jhost);
+ }
+ return jtable;
}
JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_nativeFinalize(JNIEnv *env, jobject jvm)
MSG_vm_shutdown(vm);
auto vmList = &simgrid::vm::VirtualMachineImpl::allVms_;
vmList->erase(
- std::remove_if(vmList->begin(), vmList->end(), [vm](simgrid::s4u::VirtualMachine* it) { return vm == it; }),
+ std::remove_if(vmList->begin(), vmList->end(), [vm](simgrid::s4u::VirtualMachine* it) {
+ return vm == it;
+ }),
vmList->end());
}
}
-JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_internalmig(JNIEnv *env, jobject jvm, jobject jhost)
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_nativeMigration(JNIEnv* env, jobject jvm, jobject jhost)
{
msg_vm_t vm = jvm_get_native(env,jvm);
msg_host_t host = jhost_get_native(env, jhost);
MSG_vm_resume(vm);
}
+JNIEXPORT jobject JNICALL Java_org_simgrid_msg_VM_getVMByName(JNIEnv* env, jclass cls, jstring jname)
+{
+
+ /* get the C string from the java string */
+ if (jname == nullptr) {
+ jxbt_throw_null(env, bprintf("No VM can have a null name"));
+ return nullptr;
+ }
+ const char* name = env->GetStringUTFChars(jname, 0);
+ /* get the VM by name (VMs are just special hosts, unfortunately) */
+ msg_host_t host = MSG_host_by_name(name);
+
+ if (not host) { /* invalid name */
+ jxbt_throw_host_not_found(env, name);
+ env->ReleaseStringUTFChars(jname, name);
+ return nullptr;
+ }
+ env->ReleaseStringUTFChars(jname, name);
+
+ return static_cast<jobject>(host->extension(JAVA_HOST_LEVEL));
+}
SG_END_DECL()