-/* 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 "src/plugins/vm/VirtualMachineImpl.hpp"
+#include "xbt/ex.hpp"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
+SG_BEGIN_DECL()
+
+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) {
+JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jdouble bound)
+{
msg_vm_t vm = jvm_get_native(env,jvm);
- return (jint) MSG_vm_is_saved(vm);
+ MSG_vm_set_bound(vm, bound);
}
-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, jint load) {
-
- msg_vm_t vm = jvm_get_native(env,jvm);
- double bound = MSG_get_host_speed(vm) * load / 100;
- 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) {
-
+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)
+{
msg_host_t host = jhost_get_native(env, jhost);
- const char *name;
- name = env->GetStringUTFChars(jname, 0);
- name = xbt_strdup(name);
+ 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));
+ env->ReleaseStringUTFChars(jname, name);
+
+ 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();
- // 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 (!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 (!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);
+ auto vmList = &simgrid::vm::VirtualMachineImpl::allVms_;
+ vmList->erase(
+ 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);
- xbt_ex_t e;
- TRY{
- MSG_vm_migrate(vm,host);
- } CATCH(e){
- XBT_INFO("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) {
- 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 void JNICALL
-Java_org_simgrid_msg_VM_restore(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_restore(vm);
+ MSG_vm_resume(vm);
}
+JNIEXPORT jobject JNICALL Java_org_simgrid_msg_VM_getVMByName(JNIEnv* env, jclass cls, jstring jname)
+{
-
-JNIEXPORT jobject JNICALL
-Java_org_simgrid_msg_VM_get_pm(JNIEnv *env, jobject jvm) {
- jobject jhost;
- msg_vm_t vm = jvm_get_native(env,jvm);
- msg_host_t host = MSG_vm_get_pm(vm);
-
- if (!host->extension(JAVA_HOST_LEVEL)) {
- THROW_DEADCODE;
- /* 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;
- }
- /* Sets the host name */
- const char *name = MSG_host_get_name(host);
- jobject jname = env->NewStringUTF(name);
- env->SetObjectField(jhost, jxbt_get_jfield(env,
- env->FindClass("org/simgrid/msg/Host"), "name", "Ljava/lang/String;"),
- jname);
- /* Bind & store it */
- jhost_bind(jhost, host, env);
- host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
- } else {
- jhost = (jobject) host->extension(JAVA_HOST_LEVEL);
+ /* 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 (!host) { /* invalid name */
+ jxbt_throw_host_not_found(env, name);
+ env->ReleaseStringUTFChars(jname, name);
+ return nullptr;
}
+ env->ReleaseStringUTFChars(jname, name);
- return jhost;
+ return static_cast<jobject>(host->extension(JAVA_HOST_LEVEL));
}
+SG_END_DECL()
