/*
* Instrumentation functions to trace MSG processes (msg_process_t)
*/
void TRACE_msg_process_change_host(msg_process_t process, msg_host_t old_host, msg_host_t new_host)
{
if (TRACE_msg_process_is_enabled()){
static long long int counter = 0;
char key[INSTR_DEFAULT_STR_SIZE];
snprintf (key, INSTR_DEFAULT_STR_SIZE, "%lld", counter++);
int len = INSTR_DEFAULT_STR_SIZE;
char str[INSTR_DEFAULT_STR_SIZE];
//start link
container_t msg = PJ_container_get (instr_process_id(process, str, len));
type_t type = PJ_type_get ("MSG_PROCESS_LINK", PJ_type_get_root());
new_pajeStartLink (MSG_get_clock(), PJ_container_get_root(), type, msg, "M", key);
//destroy existing container of this process
TRACE_msg_process_destroy (MSG_process_get_name (process), MSG_process_get_PID (process));
//create new container on the new_host location
TRACE_msg_process_create (MSG_process_get_name (process), MSG_process_get_PID (process), new_host);
//end link
msg = PJ_container_get(instr_process_id(process, str, len));
type = PJ_type_get ("MSG_PROCESS_LINK", PJ_type_get_root());
new_pajeEndLink (MSG_get_clock(), PJ_container_get_root(), type, msg, "M", key);
}
}
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);
}
static int client(int argc, char *argv[])
{
int my_pid = MSG_process_get_PID(MSG_process_self());
char *my_mailbox = xbt_strdup(argv[1]);
while(1){
XBT_INFO("Client (%s) asks the request", my_mailbox);
MSG_task_send(MSG_task_create("request", 0, 1000, my_mailbox), "coordinator");
msg_task_t answer = NULL;
MSG_task_receive(&answer, my_mailbox);
const char* kind = MSG_task_get_name(answer);
if (!strcmp(kind, "grant")) {
XBT_INFO("Client (%s) got the answer (grant). Sleep a bit and release it", my_mailbox);
if(!strcmp(my_mailbox, "1"))
cs = 1;
}else{
XBT_INFO("Client (%s) got the answer (not grant). Try again", my_mailbox);
}
MSG_task_destroy(answer);
kind = NULL;
MSG_process_sleep(my_pid);
}
return 0;
}
static void send_mrsg_data (msg_task_t msg)
{
char mailbox[MAILBOX_ALIAS_SIZE];
double data_size;
size_t my_id;
mrsg_task_info_t ti;
my_id = get_mrsg_worker_id (MSG_host_self ());
sprintf (mailbox, TASK_MRSG_MAILBOX,
get_mrsg_worker_id (MSG_task_get_source (msg)),
MSG_process_get_PID (MSG_task_get_sender (msg)));
if (mrsg_message_is (msg, SMS_GET_MRSG_CHUNK))
{
MSG_task_dsend (MSG_task_create ("DATA-C", 0.0, config_mrsg.mrsg_chunk_size, NULL), mailbox, NULL);
}
else if (mrsg_message_is (msg, SMS_GET_INTER_MRSG_PAIRS))
{
ti = (mrsg_task_info_t) MSG_task_get_data (msg);
data_size = job_mrsg.map_output[my_id][ti->mrsg_tid] - ti->map_output_copied[my_id];
MSG_task_dsend (MSG_task_create ("DATA-IP", 0.0, data_size, NULL), mailbox, NULL);
}
MSG_task_destroy (msg);
}
void TRACE_msg_process_kill(msg_process_t process)
{
if (TRACE_msg_process_is_enabled()){
//kill means that this process no longer exists, let's destroy it
TRACE_msg_process_destroy (MSG_process_get_name (process), MSG_process_get_PID (process), MSG_process_get_host (process));
}
}
static int client(int argc, char *argv[])
{
int my_pid = MSG_process_get_PID(MSG_process_self());
char *my_mailbox = xbt_strdup(argv[1]);
msg_task_t grant = NULL, release = NULL;
while(1){
XBT_INFO("Ask the request");
MSG_task_send(MSG_task_create("request", 0, 1000, my_mailbox), "coordinator");
if(strcmp(my_mailbox, "1") == 0){
r = 1;
cs = 0;
XBT_INFO("Propositions changed : r=1, cs=0");
}
MSG_task_receive(&grant, my_mailbox);
const char *kind = MSG_task_get_name(grant);
if((strcmp(my_mailbox, "1") == 0) && (strcmp("grant", kind) == 0)){
cs = 1;
r = 0;
XBT_INFO("Propositions changed : r=0, cs=1");
}
MSG_task_destroy(grant);
grant = NULL;
kind = NULL;
XBT_INFO("%s got the answer. Sleep a bit and release it", argv[1]);
MSG_process_sleep(1);
release = MSG_task_create("release", 0, 1000, NULL);
MSG_task_send(release, "coordinator");
release = NULL;
MSG_process_sleep(my_pid);
if(strcmp(my_mailbox, "1") == 0){
cs=0;
r=0;
XBT_INFO("Propositions changed : r=0, cs=0");
}
}
return 0;
}
/** \ingroup m_process_management
* \brief Creates and runs a new #m_process_t.
* A constructor for #m_process_t taking four arguments and returning the
* corresponding object. The structure (and the corresponding thread) is
* created, and put in the list of ready process.
* \param name a name for the object. It is for user-level information
and can be NULL.
* \param code is a function describing the behavior of the agent. It
should then only use functions described in \ref
m_process_management (to create a new #m_process_t for example),
in \ref m_host_management (only the read-only functions i.e. whose
name contains the word get), in \ref m_task_management (to create
or destroy some #m_task_t for example) and in \ref
msg_gos_functions (to handle file transfers and task processing).
* \param data a pointer to any data one may want to attach to the new
object. It is for user-level information and can be NULL. It can
be retrieved with the function \ref MSG_process_get_data.
* \param host the location where the new agent is executed.
* \param argc first argument passed to \a code
* \param argv second argument passed to \a code
* \param properties list a properties defined for this process
* \see m_process_t
* \return The new corresponding object.
*/
m_process_t MSG_process_create_with_environment(const char *name,
xbt_main_func_t code,
void *data, m_host_t host,
int argc, char **argv,
xbt_dict_t properties)
{
xbt_assert(code != NULL && host != NULL, "Invalid parameters");
simdata_process_t simdata = xbt_new0(s_simdata_process_t, 1);
m_process_t process;
/* Simulator data for MSG */
simdata->PID = msg_global->PID++;
simdata->waiting_action = NULL;
simdata->waiting_task = NULL;
simdata->m_host = host;
simdata->argc = argc;
simdata->argv = argv;
simdata->data = data;
simdata->last_errno = MSG_OK;
if (SIMIX_process_self()) {
simdata->PPID = MSG_process_get_PID(MSG_process_self());
} else {
simdata->PPID = -1;
}
/* Let's create the process: SIMIX may decide to start it right now,
* even before returning the flow control to us */
SIMIX_req_process_create(&process, name, code, simdata, host->name,
argc, argv, properties);
#ifdef HAVE_TRACING
TRACE_msg_process_create(process);
#endif
if (!process) {
/* Undo everything we have just changed */
msg_global->PID--;
xbt_free(simdata);
return NULL;
}
return 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;
}
int client(int argc, char *argv[])
{
int my_pid = MSG_process_get_PID(MSG_process_self());
// use my pid as name of mailbox to contact me
char *my_mailbox = bprintf("%d", my_pid);
// request the CS 3 times, sleeping a bit in between
int i;
for (i = 0; i < CS_PER_PROCESS; i++) {
XBT_INFO("Ask the request");
MSG_task_send(MSG_task_create("request", 0, 1000, my_mailbox),
"coordinator");
// wait the answer
msg_task_t grant = NULL;
MSG_task_receive(&grant, my_mailbox);
MSG_task_destroy(grant);
XBT_INFO("got the answer. Sleep a bit and release it");
MSG_process_sleep(1);
MSG_task_send(MSG_task_create("release", 0, 1000, NULL),
"coordinator");
MSG_process_sleep(my_pid);
}
XBT_INFO("Got all the CS I wanted, quit now");
return 0;
}
/** \ingroup m_process_management
* \brief Return the PID of the current process.
*
* This function returns the PID of the currently running #msg_process_t.
*/
int MSG_process_self_PID()
{
return MSG_process_get_PID(MSG_process_self());
}
{
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);
}
process = MSG_process_create("slave from master",
slave, NULL, MSG_host_self());
MSG_process_sleep(2);
XBT_INFO("Suspend Process(pid=%d)", MSG_process_get_PID(process));
MSG_process_suspend(process);
XBT_INFO("Process(pid=%d) is %ssuspended",
MSG_process_get_PID(process),
(MSG_process_is_suspended(process)) ? "" : "not ");
MSG_process_sleep(2);
XBT_INFO("Resume Process(pid=%d)", MSG_process_get_PID(process));
MSG_process_resume(process);
XBT_INFO("Process(pid=%d) is %ssuspended",
MSG_process_get_PID(process),
(MSG_process_is_suspended(process)) ? "" : "not ");
MSG_process_sleep(2);
MSG_process_kill(process);
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);
}
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);
}
process = MSG_process_create("slave from master", slave, NULL, MSG_host_self());
MSG_process_sleep(2);
XBT_INFO("Suspend Process(pid=%d)", MSG_process_get_PID(process));
MSG_process_suspend(process);
XBT_INFO("Process(pid=%d) is %ssuspended", MSG_process_get_PID(process),
(MSG_process_is_suspended(process)) ? "" : "not ");
MSG_process_sleep(2);
XBT_INFO("Resume Process(pid=%d)", MSG_process_get_PID(process));
MSG_process_resume(process);
XBT_INFO("Process(pid=%d) is %ssuspended", MSG_process_get_PID(process),
(MSG_process_is_suspended(process)) ? "" : "not ");
MSG_process_sleep(2);
MSG_process_kill(process);
XBT_INFO("Goodbye now!");
