X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/daa8c0fb5c83ce31b6ae805d255d412d8f0a01a3..5ed37babb2fa9097abe82df299c0aa259ed84d5a:/src/bindings/java/jmsg_vm.cpp diff --git a/src/bindings/java/jmsg_vm.cpp b/src/bindings/java/jmsg_vm.cpp index 3eb6c151d6..a9174bacfa 100644 --- a/src/bindings/java/jmsg_vm.cpp +++ b/src/bindings/java/jmsg_vm.cpp @@ -1,203 +1,186 @@ -/* 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) 2012-2023. 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 +#include "jxbt_utilities.hpp" +#include "simgrid/Exception.hpp" +#include "simgrid/plugins/live_migration.h" +#include "src/kernel/resource/VirtualMachineImpl.hpp" -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg); +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java); +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, sg_vm_t vm) +{ env->SetLongField(jvm, jvm_field_bind, (intptr_t)vm); } -msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) { - return (msg_vm_t)(intptr_t)env->GetLongField(jvm, jvm_field_bind); + +sg_vm_t jvm_get_native(JNIEnv* env, jobject jvm) +{ + return (sg_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.")); - } -} - -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); + xbt_assert(jvm_field_bind, "Native initialization of msg/VM failed. Please report that bug"); } -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 jboolean JNICALL Java_org_simgrid_msg_VM_isCreated(JNIEnv* env, jobject jvm) +{ + const_sg_vm_t vm = jvm_get_native(env, jvm); + return sg_vm_is_created(vm); } -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 jboolean JNICALL Java_org_simgrid_msg_VM_isRunning(JNIEnv* env, jobject jvm) +{ + const_sg_vm_t vm = jvm_get_native(env, jvm); + return sg_vm_is_running(vm); } -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 jboolean JNICALL Java_org_simgrid_msg_VM_isMigrating(JNIEnv* env, jobject jvm) +{ + const_sg_vm_t vm = jvm_get_native(env, jvm); + return sg_vm_is_migrating(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 jboolean JNICALL Java_org_simgrid_msg_VM_isSuspended(JNIEnv* env, jobject jvm) +{ + const_sg_vm_t vm = jvm_get_native(env, jvm); + return sg_vm_is_suspended(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 void JNICALL Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jdouble bound) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + sg_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_create(JNIEnv* env, jobject jVm, jobject jHost, jstring jname, + jint coreAmount, jint jramsize, jint jmig_netspeed, + jint jdp_intensity) +{ + sg_host_t host = jhost_get_native(env, jHost); -JNIEXPORT void JNICALL -Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jint load) { + jstring_wrapper name(env, jname); + sg_vm_t vm = sg_vm_create_migratable(host, name, static_cast(coreAmount), static_cast(jramsize), + static_cast(jmig_netspeed), static_cast(jdp_intensity)); - msg_vm_t vm = jvm_get_native(env,jvm); - double bound = MSG_get_host_speed(vm) * load / 100; - MSG_vm_set_bound(vm, bound); + 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, jVm); } -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 jobjectArray JNICALL Java_org_simgrid_msg_VM_all(JNIEnv* env, jclass cls_arg) +{ + sg_host_t* hosts = sg_host_list(); + size_t host_count = sg_host_count(); + std::vector vms; - msg_host_t host = jhost_get_native(env, jhost); + for (size_t i = 0; i < host_count; i++) { + const auto* vm = dynamic_cast(hosts[i]); + if (vm != nullptr && vm->get_state() != simgrid::s4u::VirtualMachine::State::DESTROYED) { + auto jvm = static_cast(vm->extension(JAVA_HOST_LEVEL)); + vms.push_back(jvm); + } + } + xbt_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) { - msg_vm_t vm = jvm_get_native(env,jvm); - MSG_vm_destroy(vm); +JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_nativeFinalize(JNIEnv *env, jobject jvm) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + sg_vm_destroy(vm); } -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_start(JNIEnv *env, jobject jvm) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + sg_vm_start(vm); } -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); +JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + if (vm) + sg_vm_shutdown(vm); } -JNIEXPORT void JNICALL -Java_org_simgrid_msg_VM_internalmig(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); - jxbt_throw_host_failure(env, (char*)"during migration"); - } +JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_destroy(JNIEnv* env, jobject jvm) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + if (vm) { + sg_vm_destroy(vm); + auto* vmList = &simgrid::kernel::resource::VirtualMachineImpl::allVms_; + vmList->erase(std::remove(vmList->begin(), vmList->end(), vm), vmList->end()); + } } -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_nativeMigration(JNIEnv* env, jobject jvm, jobject jhost) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + sg_host_t host = jhost_get_native(env, jhost); + if (not simgrid::ForcefulKillException::try_n_catch([&vm, &host]() { sg_vm_migrate(vm, host); })) { + XBT_VERB("Caught exception during migration"); + jxbt_throw_host_failure(env, " during migration"); + } } -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) { - msg_vm_t vm = jvm_get_native(env,jvm); - MSG_vm_restore(vm); +JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + sg_vm_suspend(vm); } +JNIEXPORT void JNICALL Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) +{ + sg_vm_t vm = jvm_get_native(env, jvm); + sg_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, "No VM can have a null name"); + return nullptr; + } + jstring_wrapper name(env, jname); + /* get the VM by name (VMs are just special hosts, unfortunately) */ + auto const* host = sg_host_by_name(name); -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); + if (not host) { /* invalid name */ + jxbt_throw_host_not_found(env, name); + return nullptr; } - return jhost; + return static_cast(host->extension(JAVA_HOST_LEVEL)); }