static int master(int argc, char *argv[])
{
xbt_swag_t process_list = MSG_host_get_process_list(MSG_host_self());
msg_process_t process = NULL;
MSG_process_sleep(1);
xbt_swag_foreach(process, process_list) {
XBT_INFO("Process(pid=%d, ppid=%d, name=%s)", MSG_process_get_PID(process), MSG_process_get_PPID(process),
MSG_process_get_name(process));
if (MSG_process_self_PID() != MSG_process_get_PID(process))
MSG_process_kill(process);
}
/** Create a Java org.simgrid.msg.Process with the arguments and run it */
static int java_main(int argc, char *argv[])
{
JNIEnv *env = get_current_thread_env();
simgrid::java::JavaContext* context = (simgrid::java::JavaContext*) SIMIX_context_self();
//Change the "." in class name for "/".
xbt_str_subst(argv[0],'.','/',0);
jclass class_Process = env->FindClass(argv[0]);
xbt_str_subst(argv[0],'/','.',0);
//Retrieve the methodID for the constructor
xbt_assert((class_Process != nullptr), "Class not found (%s). The deployment file must use the fully qualified class name, including the package. The case is important.", argv[0]);
jmethodID constructor_Process = env->GetMethodID(class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
xbt_assert((constructor_Process != nullptr), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
//Retrieve the name of the process.
jstring jname = env->NewStringUTF(argv[0]);
//Build the arguments
jobjectArray args = (jobjectArray)env->NewObjectArray(argc - 1,
env->FindClass("java/lang/String"),
env->NewStringUTF(""));
int i;
for (i = 1; i < argc; i++)
env->SetObjectArrayElement(args,i - 1, env->NewStringUTF(argv[i]));
//Retrieve the host for the process.
jstring jhostName = env->NewStringUTF(MSG_host_get_name(MSG_host_self()));
jobject jhost = Java_org_simgrid_msg_Host_getByName(env, nullptr, jhostName);
//creates the process
jobject jprocess = env->NewObject(class_Process, constructor_Process, jhost, jname, args);
xbt_assert((jprocess != nullptr), "Process allocation failed.");
jprocess = env->NewGlobalRef(jprocess);
//bind the process to the context
msg_process_t process = MSG_process_self();
context->jprocess = jprocess;
/* 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));
jprocess_bind(jprocess, process, env);
run_jprocess(env, context->jprocess);
return 0;
}
/** \ingroup m_process_management
* \brief Return the PPID of the current process.
*
* This function returns the PID of the parent of the currently running #msg_process_t.
*/
int MSG_process_self_PPID()
{
return MSG_process_get_PPID(MSG_process_self());
}
JNIEXPORT void JNICALL
Java_org_simgrid_msg_Process_create(JNIEnv * env,
jobject jprocess_arg,
jobject jhostname)
{
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(env, 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 NULL"));
return;
}
/* bind/retrieve the msg host */
host = MSG_host_by_name(hostname);
if (!(host)) { /* not bound */
jxbt_throw_host_not_found(env, hostname);
return;
}
/* 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");
return;
}
/* build the C name of the process */
name = (*env)->GetStringUTFChars(env, jname, 0);
name = xbt_strdup(name);
/* Retrieve the kill time from the process */
jdouble jkill = (*env)->GetDoubleField(env, jprocess, jprocess_field_Process_killTime);
/* Actually build the MSG process */
process = MSG_process_create_with_environment(name,
(xbt_main_func_t) jprocess,
/*data*/ jprocess,
host,
/*argc, argv, properties*/
0,NULL,NULL);
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(env, jname, name);
(*env)->ReleaseStringUTFChars(env, jhostname, hostname);
/* sets the PID and the PPID of the process */
(*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
(*env)->SetIntField(env, 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,NULL,jhostname);
(*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
}
