X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d5cf915bd09762c921e587f376420993f216a239..4c753f8d4cabd4104f3f7109823f16be2ebdcce3:/src/bindings/java/jmsg_process.cpp diff --git a/src/bindings/java/jmsg_process.cpp b/src/bindings/java/jmsg_process.cpp index 4455dd927e..a561d17700 100644 --- a/src/bindings/java/jmsg_process.cpp +++ b/src/bindings/java/jmsg_process.cpp @@ -1,192 +1,126 @@ /* Functions related to the java process instances. */ -/* Copyright (c) 2007-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2007-2022. 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_process.h" -#include "jmsg.h" -#include "jmsg_host.h" -#include "jxbt_utilities.h" #include "JavaContext.hpp" +#include "jmsg.hpp" +#include "jmsg_host.h" +#include "jxbt_utilities.hpp" +#include "simgrid/Exception.hpp" +#include "simgrid/s4u/Actor.hpp" +#include "src/kernel/actor/ActorImpl.hpp" -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg); - -extern "C" { +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java); jfieldID jprocess_field_Process_bind; jfieldID jprocess_field_Process_host; jfieldID jprocess_field_Process_killTime; -jfieldID jprocess_field_Process_id; jfieldID jprocess_field_Process_name; jfieldID jprocess_field_Process_pid; jfieldID jprocess_field_Process_ppid; -JNIEXPORT void JNICALL -Java_org_simgrid_msg_Process_exit(JNIEnv *env, jobject jprocess) { - -} - -jobject native_to_java_process(msg_process_t process) +jobject jprocess_from_native(const_sg_actor_t actor) { - simgrid::java::JavaContext* context = (simgrid::java::JavaContext*) MSG_process_get_smx_ctx(process); - return context->jprocess; + const simgrid::kernel::context::JavaContext* context = + static_cast(actor->get_impl()->context_.get()); + return context->jprocess_; } -jobject jprocess_new_global_ref(jobject jprocess, JNIEnv * env) +jobject jprocess_ref(jobject jprocess, JNIEnv* env) { return env->NewGlobalRef(jprocess); } -void jprocess_delete_global_ref(jobject jprocess, JNIEnv * env) +void jprocess_unref(jobject jprocess, JNIEnv* env) { env->DeleteGlobalRef(jprocess); } -void jprocess_join(jobject jprocess, JNIEnv * env) -{ - msg_process_t process = jprocess_to_native_process(jprocess,env); - simgrid::java::JavaContext* context = (simgrid::java::JavaContext*) MSG_process_get_smx_ctx(process); - xbt_os_thread_join(context->thread,nullptr); -} - -msg_process_t jprocess_to_native_process(jobject jprocess, JNIEnv * env) -{ - return (msg_process_t)(intptr_t)env->GetLongField(jprocess, jprocess_field_Process_bind); -} - -void jprocess_bind(jobject jprocess, msg_process_t process, JNIEnv * env) -{ - env->SetLongField(jprocess, jprocess_field_Process_bind, (intptr_t)process); -} - -jlong jprocess_get_id(jobject jprocess, JNIEnv * env) -{ - return (intptr_t)env->GetLongField(jprocess, jprocess_field_Process_id); -} - -jstring jprocess_get_name(jobject jprocess, JNIEnv * env) +sg_actor_t jprocess_to_native(jobject jprocess, JNIEnv* env) { - jstring jname = (jstring) env->GetObjectField(jprocess, jprocess_field_Process_name); - return (jstring) env->NewGlobalRef(jname); + return (sg_actor_t)(intptr_t)env->GetLongField(jprocess, jprocess_field_Process_bind); } -jboolean jprocess_is_valid(jobject jprocess, JNIEnv * env) +void jprocess_bind(jobject jprocess, const_sg_actor_t actor, JNIEnv* env) { - jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J"); - - if (!id) - return JNI_FALSE; - - return env->GetLongField(jprocess, id) ? JNI_TRUE : JNI_FALSE; + env->SetLongField(jprocess, jprocess_field_Process_bind, (intptr_t)actor); } JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) { jclass jprocess_class_Process = env->FindClass("org/simgrid/msg/Process"); + xbt_assert(jprocess_class_Process, "Native initialization of msg/Process failed. Please report that bug"); jprocess_field_Process_name = jxbt_get_jfield(env, jprocess_class_Process, "name", "Ljava/lang/String;"); jprocess_field_Process_bind = jxbt_get_jfield(env, jprocess_class_Process, "bind", "J"); - jprocess_field_Process_id = jxbt_get_jfield(env, jprocess_class_Process, "id", "J"); jprocess_field_Process_pid = jxbt_get_jfield(env, jprocess_class_Process, "pid", "I"); jprocess_field_Process_ppid = jxbt_get_jfield(env, jprocess_class_Process, "ppid", "I"); jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;"); jprocess_field_Process_killTime = jxbt_get_jfield(env, jprocess_class_Process, "killTime", "D"); - if (!jprocess_class_Process || !jprocess_field_Process_id || !jprocess_field_Process_name || - !jprocess_field_Process_pid || !jprocess_field_Process_ppid || !jprocess_field_Process_host) { - jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug.")); - } + xbt_assert(jprocess_field_Process_name && jprocess_field_Process_pid && jprocess_field_Process_ppid && + jprocess_field_Process_host, + "Native initialization of msg/Process failed. Please report that bug"); } -JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_create(JNIEnv * env, jobject jprocess_arg, jobject jhostname) +JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_create(JNIEnv* env, jobject jprocess_arg, jobject jhost) { - jobject jprocess; /* the global reference to the java process instance */ - jstring jname; /* the name of the java process instance */ - const char *name; /* the C name of the process */ - const char *hostname; - msg_process_t process; /* the native process to create */ - msg_host_t host; /* Where that process lives */ - - hostname = env->GetStringUTFChars((jstring) jhostname, 0); - - /* get the name of the java process */ - jname = jprocess_get_name(jprocess_arg, env); - if (!jname) { - jxbt_throw_null(env, - xbt_strdup("Internal error: Process name cannot be nullptr")); - return; - } + /* create a global java process instance */ + jobject jprocess = jprocess_ref(jprocess_arg, env); - /* bind/retrieve the msg host */ - host = MSG_host_by_name(hostname); + /* Actually build the MSG process */ + auto jname = (jstring)env->GetObjectField(jprocess, jprocess_field_Process_name); + const char* name = env->GetStringUTFChars(jname, nullptr); + auto actor_code = [jprocess]() { simgrid::kernel::context::java_main_jprocess(jprocess); }; + auto self = simgrid::kernel::actor::ActorImpl::self(); + sg_host_t host = jhost_get_native(env, jhost); + auto* actor = simgrid::kernel::actor::simcall_answered([name, actor_code, host, self] { + return simgrid::kernel::actor::ActorImpl::create(std::move(name), std::move(actor_code), nullptr, host, self).get(); + }); + sg_actor_yield(); + + env->ReleaseStringUTFChars(jname, name); + + /* Retrieve the kill time from the actor */ + actor->get_ciface()->set_kill_time((double)env->GetDoubleField(jprocess, jprocess_field_Process_killTime)); + + /* sets the PID and the PPID of the actor */ + env->SetIntField(jprocess, jprocess_field_Process_pid, (jint)actor->get_ciface()->get_pid()); + env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint)actor->get_ciface()->get_ppid()); +} - if (!(host)) { /* not bound */ - jxbt_throw_host_not_found(env, hostname); - return; - } +JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_daemonize(JNIEnv* env, jobject jprocess) +{ + sg_actor_t actor = jprocess_to_native(jprocess, env); - /* create a global java process instance */ - jprocess = jprocess_new_global_ref(jprocess_arg, env); - if (!jprocess) { - jxbt_throw_jni(env, "Can't get a global ref to the java process"); + if (not actor) { + jxbt_throw_notbound(env, "process", jprocess); return; } - /* build the C name of the process */ - name = env->GetStringUTFChars(jname, 0); - name = xbt_strdup(name); - - /* Retrieve the kill time from the process */ - jdouble jkill = env->GetDoubleField(jprocess, jprocess_field_Process_killTime); - /* Actually build the MSG process */ - process = MSG_process_create_with_environment(name, [](int argc, char** argv) -> int { - smx_process_t process = SIMIX_process_self(); - // This is the jprocess passed as environment. - // It would be simplet if we could use a closure. - jobject jprocess = (jobject) MSG_process_get_data(process); - simgrid::java::java_main_jprocess(jprocess); - return 0; - }, jprocess, - host, - /*argc, argv, properties*/ - 0, nullptr, nullptr); - MSG_process_set_kill_time(process, (double)jkill); - /* bind the java process instance to the native process */ - jprocess_bind(jprocess, process, env); - - /* release our reference to the process name (variable name becomes invalid) */ - //FIXME : This line should be uncommented but with mac it doesn't work. BIG WARNING - //env->ReleaseStringUTFChars(jname, name); - env->ReleaseStringUTFChars((jstring) jhostname, hostname); - - /* sets the PID and the PPID of the process */ - env->SetIntField(jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process)); - env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process)); - /* sets the Host of the process */ - jobject jhost = Java_org_simgrid_msg_Host_getByName(env,nullptr, (jstring)jhostname); - - env->SetObjectField(jprocess, jprocess_field_Process_host, jhost); + actor->daemonize(); } -JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls, jint jresetPID) +JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_killAll(JNIEnv* env, jclass cls) { - return (jint) MSG_process_killall((int) jresetPID); + sg_actor_kill_all(); } -JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls, jint PID) +JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls, jint pid) { - msg_process_t process = MSG_process_from_PID(PID); + auto const* actor = sg_actor_by_pid(pid); - if (!process) { - jxbt_throw_process_not_found(env, bprintf("PID = %d",(int) PID)); + if (not actor) { + jxbt_throw_process_not_found(env, "PID = " + std::to_string(static_cast(pid))); return nullptr; } - jobject jprocess = native_to_java_process(process); + jobject jprocess = jprocess_from_native(actor); - if (!jprocess) { + if (not jprocess) { jxbt_throw_jni(env, "get process failed"); return nullptr; } @@ -194,40 +128,34 @@ JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jcl return jprocess; } +JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_nativeGetPID(JNIEnv* env, jobject jprocess) +{ + const_sg_actor_t actor = jprocess_to_native(jprocess, env); + return sg_actor_get_pid(actor); +} + JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getProperty(JNIEnv *env, jobject jprocess, jobject jname) { - msg_process_t process = jprocess_to_native_process(jprocess, env); + const_sg_actor_t actor = jprocess_to_native(jprocess, env); - if (!process) { + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return nullptr; } - const char *name = env->GetStringUTFChars((jstring)jname, 0); + jstring_wrapper name(env, (jstring)jname); - const char *property = MSG_process_get_property_value(process, name); - if (!property) { + const char* property = actor->get_property(name); + if (not property) return nullptr; - } jobject jproperty = env->NewStringUTF(property); - env->ReleaseStringUTFChars((jstring)jname, name); - return jproperty; } JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getCurrentProcess(JNIEnv * env, jclass cls) { - msg_process_t process = MSG_process_self(); - jobject jprocess; - - if (!process) { - jxbt_throw_jni(env, xbt_strdup("MSG_process_self() failed")); - return nullptr; - } - - jprocess = native_to_java_process(process); - - if (!jprocess) + jobject jprocess = jprocess_from_native(sg_actor_self()); + if (not jprocess) jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed")); return jprocess; @@ -235,106 +163,86 @@ JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getCurrentProcess(JNIEnv JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_suspend(JNIEnv * env, jobject jprocess) { - msg_process_t process = jprocess_to_native_process(jprocess, env); + sg_actor_t actor = jprocess_to_native(jprocess, env); - if (!process) { + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return; } - /* try to suspend the process */ - msg_error_t rv = MSG_process_suspend(process); - - jxbt_check_res("MSG_process_suspend()", rv, MSG_OK, bprintf("unexpected error , please report this bug")); + /* suspend the process */ + actor->suspend(); } JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_resume(JNIEnv * env, jobject jprocess) { - msg_process_t process = jprocess_to_native_process(jprocess, env); + sg_actor_t actor = jprocess_to_native(jprocess, env); - if (!process) { + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return; } - /* try to resume the process */ - msg_error_t rv = MSG_process_resume(process); - - jxbt_check_res("MSG_process_resume()", rv, MSG_OK, bprintf("unexpected error , please report this bug")); + /* resume the process */ + actor->resume(); } -JNIEXPORT void -JNICALL Java_org_simgrid_msg_Process_setAutoRestart (JNIEnv *env, jobject jprocess, jboolean jauto_restart) { - msg_process_t process = jprocess_to_native_process(jprocess, env); - xbt_ex_t e; - - int auto_restart = jauto_restart == JNI_TRUE ? 1 : 0; - if (!process) { +JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_setAutoRestart(JNIEnv* env, jobject jprocess, + jboolean jauto_restart) +{ + sg_actor_t actor = jprocess_to_native(jprocess, env); + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return; } - TRY { - MSG_process_auto_restart_set(process,auto_restart); - } - CATCH (e) { - xbt_ex_free(e); - } + actor->set_auto_restart(jauto_restart == JNI_TRUE); } JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_restart (JNIEnv *env, jobject jprocess) { - msg_process_t process = jprocess_to_native_process(jprocess, env); - xbt_ex_t e; + sg_actor_t actor = jprocess_to_native(jprocess, env); - if (!process) { + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return; } - TRY { - MSG_process_restart(process); - } - CATCH (e) { - xbt_ex_free(e); - } - + actor->restart(); } + JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env, jobject jprocess) { - msg_process_t process = jprocess_to_native_process(jprocess, env); + sg_actor_t actor = jprocess_to_native(jprocess, env); - if (!process) { + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return 0; } - /* true is the process is suspended, false otherwise */ - return (jboolean) MSG_process_is_suspended(process); + /* true is the actor is suspended, false otherwise */ + return (jboolean)actor->is_suspended(); } JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_sleep(JNIEnv *env, jclass cls, jlong jmillis, jint jnanos) { double time = ((double)jmillis) / 1000 + ((double)jnanos) / 1000000000; - msg_error_t rv; - rv = MSG_process_sleep(time); + msg_error_t rv = MSG_OK; + if (not simgrid::ForcefulKillException::try_n_catch([&time]() { simgrid::s4u::this_actor::sleep_for(time); })) { + rv = MSG_HOST_FAILURE; + } if (rv != MSG_OK) { - XBT_DEBUG("Something during the MSG_process_sleep invocation was wrong, trigger a HostFailureException"); - - //jmsg_throw_status(env,rv); - - // adsein, the code above as been replaced by the code below. Indeed, according to the documentation, a sleep can only - // trigger a host_failure exception. When the sleep crashes due to a host shutdown, the exception thrown by smx_context_java.c - // is a cancelled_error, see bindings/java/smx_context_java.c, function void smx_ctx_java_stop(smx_context_t context) and src/msg/msg_gos.c - // function msg_error_t MSG_process_sleep(double nb_sec) - - jxbt_throw_host_failure(env,nullptr); + jmsg_throw_status(env, rv); } } JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess, jdouble jseconds) { - msg_error_t rv; - rv = MSG_process_sleep((double)jseconds); + msg_error_t rv = MSG_OK; + if (not simgrid::ForcefulKillException::try_n_catch( + [&jseconds]() { simgrid::s4u::this_actor::sleep_for((double)jseconds); })) { + rv = MSG_HOST_FAILURE; + jxbt_throw_by_name(env, "org/simgrid/msg/ProcessKilledError", "Process killed"); + } if (env->ExceptionOccurred()) return; if (rv != MSG_OK) { @@ -346,48 +254,48 @@ JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobjec JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_kill(JNIEnv * env, jobject jprocess) { /* get the native instances from the java ones */ - msg_process_t process = jprocess_to_native_process(jprocess, env); - if (!process) { + sg_actor_t actor = jprocess_to_native(jprocess, env); + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return; } - - MSG_process_kill(process); + if (not simgrid::ForcefulKillException::try_n_catch([&actor]() { actor->kill(); })) { + jxbt_throw_by_name(env, "org/simgrid/msg/ProcessKilledError", "Process killed"); + } } JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_migrate(JNIEnv * env, jobject jprocess, jobject jhost) { - msg_process_t process = jprocess_to_native_process(jprocess, env); + sg_actor_t actor = jprocess_to_native(jprocess, env); - if (!process) { + if (not actor) { jxbt_throw_notbound(env, "process", jprocess); return; } - msg_host_t host = jhost_get_native(env, jhost); + sg_host_t host = jhost_get_native(env, jhost); - if (!host) { + if (not host) { jxbt_throw_notbound(env, "host", jhost); return; } - /* try to change the host of the process */ - msg_error_t rv = MSG_process_migrate(process, host); - if (rv != MSG_OK) { - jmsg_throw_status(env,rv); - return; - } + /* change the host of the actor */ + actor->set_host(host); + /* change the host java side */ env->SetObjectField(jprocess, jprocess_field_Process_host, jhost); } -JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) { - msg_process_t process = jprocess_to_native_process(jprocess, env); - MSG_process_set_kill_time(process, (double)jkilltime); +JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_yield(JNIEnv* env, jclass cls) +{ + simgrid::s4u::this_actor::yield(); } -JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_getCount(JNIEnv * env, jclass cls) { - return (jint) MSG_process_get_number(); +JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) { + jprocess_to_native(jprocess, env)->set_kill_time((double)jkilltime); } +JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_getCount(JNIEnv * env, jclass cls) { + return (jint)sg_actor_count(); }