-/* Functions related to the MSG VM API. */
+/* Functions related to the Virtual Machines. */
-/* Copyright (c) 2012-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2012-2017. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "jmsg.h"
#include "jmsg_vm.h"
#include "jmsg_host.h"
-#include "jmsg_process.h"
-#include "jxbt_utilities.h"
-#include "simgrid/msg.h"
-#include <surf/surf_routing.h>
+#include "jxbt_utilities.hpp"
+#include "simgrid/plugins/live_migration.h"
+#include "src/plugins/vm/VirtualMachineImpl.hpp"
+#include "xbt/ex.hpp"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
+extern "C" {
+
+extern int JAVA_HOST_LEVEL;
static jfieldID jvm_field_bind;
-void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm) {
+void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm)
+{
env->SetLongField(jvm, jvm_field_bind, (intptr_t)vm);
}
-msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) {
+
+msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm)
+{
return (msg_vm_t)(intptr_t)env->GetLongField(jvm, jvm_field_bind);
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls) {
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls)
+{
jclass jprocess_class_VM = env->FindClass("org/simgrid/msg/VM");
jvm_field_bind = jxbt_get_jfield(env, jprocess_class_VM, "bind", "J");
- if (!jvm_field_bind ) {
- jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
- }
+ xbt_assert(jvm_field_bind, "Native initialization of msg/VM failed. Please report that bug");
}
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm) {
+JNIEXPORT jint JNICALL Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
- return (jint) MSG_vm_is_created(vm);
+ return MSG_vm_is_created(vm);
}
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm) {
+JNIEXPORT jint JNICALL Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
return (jint) MSG_vm_is_running(vm);
}
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm) {
+JNIEXPORT jint JNICALL Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
return (jint) MSG_vm_is_migrating(vm);
}
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm) {
+JNIEXPORT jint JNICALL Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
return (jint) MSG_vm_is_suspended(vm);
}
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isSaving(JNIEnv * env, jobject jvm) {
- msg_vm_t vm = jvm_get_native(env,jvm);
- return (jint) MSG_vm_is_saving(vm);
-}
-
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isSaved(JNIEnv * env, jobject jvm) {
- msg_vm_t vm = jvm_get_native(env,jvm);
- return (jint) MSG_vm_is_saved(vm);
-}
-
-JNIEXPORT jint JNICALL
-Java_org_simgrid_msg_VM_isRestoring(JNIEnv * env, jobject jvm) {
- msg_vm_t vm = jvm_get_native(env,jvm);
- return (jint) MSG_vm_is_restoring(vm);
-}
-
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jdouble bound) {
-
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jdouble bound)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
MSG_vm_set_bound(vm, bound);
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_create(JNIEnv *env, jobject jvm, jobject jhost, jstring jname,
- jint jncore, jint jramsize, jint jnetcap, jstring jdiskpath, jint jdisksize, jint jmig_netspeed, jint jdp_intensity) {
-
- msg_host_t host = jhost_get_native(env, jhost);
+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);
+
+ const char* name = env->GetStringUTFChars(jname, 0);
+ msg_vm_t vm = MSG_vm_create_migratable(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 = env->NewGlobalRef(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);
- const char *name;
- name = env->GetStringUTFChars(jname, 0);
- name = xbt_strdup(name);
+ vms.shrink_to_fit();
+ int count = vms.size();
- // TODO disk concerns are not taken into account yet
- // const char *diskpath;
- // disk_path = (*env)->GetStringUTFChars(env, jdiskpath, 0);
- // disk_path = xbt_strdup(disk_path);
+ jclass cls = jxbt_get_class(env, "org/simgrid/msg/VM");
+ if (not cls)
+ return nullptr;
- msg_vm_t vm = MSG_vm_create(host, name, (int) jncore, (int) jramsize,
- (int) jnetcap, NULL, (int) jdisksize, (int) jmig_netspeed, (int) jdp_intensity);
+ jobjectArray jtable = env->NewObjectArray((jsize)count, cls, nullptr);
+ if (not jtable) {
+ jxbt_throw_jni(env, "Hosts table allocation failed");
+ return nullptr;
+ }
- jvm_bind(env,jvm,vm);
+ 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) {
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_nativeFinalize(JNIEnv *env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
MSG_vm_destroy(vm);
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm) {
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
MSG_vm_start(vm);
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) {
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
- MSG_vm_shutdown(vm);
+ if (vm)
+ MSG_vm_shutdown(vm);
+}
+
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_destroy(JNIEnv* env, jobject jvm)
+{
+ msg_vm_t vm = jvm_get_native(env, jvm);
+ if (vm) {
+ MSG_vm_destroy(vm);
+ auto vmList = &simgrid::vm::VirtualMachineImpl::allVms_;
+ vmList->erase(std::remove(vmList->begin(), vmList->end(), vm), 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);
- xbt_ex_t e;
- TRY{
- MSG_vm_migrate(vm,host);
- } CATCH(e){
- XBT_VERB("CATCH EXCEPTION MIGRATION %s",e.msg);
- xbt_ex_free(e);
+ try {
+ MSG_vm_migrate(vm,host);
+ }
+ catch(xbt_ex& e){
+ XBT_VERB("CATCH EXCEPTION MIGRATION %s",e.what());
jxbt_throw_host_failure(env, (char*)"during migration");
- }
+ }
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) {
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
MSG_vm_suspend(vm);
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) {
+
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
MSG_vm_resume(vm);
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_save(JNIEnv *env, jobject jvm) {
- msg_vm_t vm = jvm_get_native(env,jvm);
- MSG_vm_save(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, "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));
}
-JNIEXPORT void JNICALL
-Java_org_simgrid_msg_VM_restore(JNIEnv *env, jobject jvm) {
- msg_vm_t vm = jvm_get_native(env,jvm);
- MSG_vm_restore(vm);
}
