1 /* Functions related to the java process instances. */
3 /* Copyright (c) 2007-2014. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "jmsg_process.h"
12 #include "jmsg_host.h"
13 #include "jxbt_utilities.h"
14 #include "smx_context_java.h"
15 #include "smx_context_cojava.h"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
19 jfieldID jprocess_field_Process_bind;
20 jfieldID jprocess_field_Process_host;
21 jfieldID jprocess_field_Process_killTime;
22 jfieldID jprocess_field_Process_id;
23 jfieldID jprocess_field_Process_name;
24 jfieldID jprocess_field_Process_pid;
25 jfieldID jprocess_field_Process_ppid;
27 JNIEXPORT void JNICALL
28 Java_org_simgrid_msg_Process_exit(JNIEnv *env, jobject jprocess) {
29 if (smx_factory_initializer_to_use == SIMIX_ctx_cojava_factory_init) {
30 msg_process_t process = jprocess_to_native_process(jprocess, env);
31 smx_context_t context = MSG_process_get_smx_ctx(process);
32 smx_ctx_cojava_stop(context);
36 jobject native_to_java_process(msg_process_t process)
38 return ((smx_ctx_java_t)MSG_process_get_smx_ctx(process))->jprocess;
41 jobject jprocess_new_global_ref(jobject jprocess, JNIEnv * env)
43 return (*env)->NewGlobalRef(env, jprocess);
46 void jprocess_delete_global_ref(jobject jprocess, JNIEnv * env)
48 (*env)->DeleteGlobalRef(env, jprocess);
51 void jprocess_join(jobject jprocess, JNIEnv * env)
53 msg_process_t process = jprocess_to_native_process(jprocess,env);
54 smx_ctx_java_t context = (smx_ctx_java_t)MSG_process_get_smx_ctx(process);
55 xbt_os_thread_join(context->thread,NULL);
58 msg_process_t jprocess_to_native_process(jobject jprocess, JNIEnv * env)
61 (msg_process_t)(intptr_t)(*env)->GetLongField(env, jprocess,
62 jprocess_field_Process_bind);
65 void jprocess_bind(jobject jprocess, msg_process_t process, JNIEnv * env)
67 (*env)->SetLongField(env, jprocess, jprocess_field_Process_bind,
71 jlong jprocess_get_id(jobject jprocess, JNIEnv * env)
74 (intptr_t)(*env)->GetLongField(env, jprocess, jprocess_field_Process_id);
77 jstring jprocess_get_name(jobject jprocess, JNIEnv * env)
79 jstring jname = (jstring) (*env)->GetObjectField(env, jprocess, jprocess_field_Process_name);
80 return (*env)->NewGlobalRef(env, jname);
84 jboolean jprocess_is_valid(jobject jprocess, JNIEnv * env)
86 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J");
91 return (*env)->GetLongField(env, jprocess, id) ? JNI_TRUE : JNI_FALSE;
93 JNIEXPORT void JNICALL
94 Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) {
95 jclass jprocess_class_Process = (*env)->FindClass(env, "org/simgrid/msg/Process");
97 jprocess_field_Process_name = jxbt_get_jfield(env, jprocess_class_Process, "name", "Ljava/lang/String;");
98 jprocess_field_Process_bind = jxbt_get_jfield(env, jprocess_class_Process, "bind", "J");
99 jprocess_field_Process_id = jxbt_get_jfield(env, jprocess_class_Process, "id", "J");
100 jprocess_field_Process_pid = jxbt_get_jfield(env, jprocess_class_Process, "pid", "I");
101 jprocess_field_Process_ppid = jxbt_get_jfield(env, jprocess_class_Process, "ppid", "I");
102 jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;");
103 jprocess_field_Process_killTime = jxbt_get_jfield(env, jprocess_class_Process, "killTime", "D");
104 if (!jprocess_class_Process || !jprocess_field_Process_id || !jprocess_field_Process_name || !jprocess_field_Process_pid ||
105 !jprocess_field_Process_ppid || !jprocess_field_Process_host) {
106 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
109 JNIEXPORT void JNICALL
110 Java_org_simgrid_msg_Process_create(JNIEnv * env,
111 jobject jprocess_arg,
116 jobject jprocess; /* the global reference to the java process instance */
117 jstring jname; /* the name of the java process instance */
118 const char *name; /* the C name of the process */
119 const char *hostname;
120 msg_process_t process; /* the native process to create */
121 msg_host_t host; /* Where that process lives */
123 hostname = (*env)->GetStringUTFChars(env, jhostname, 0);
125 /* get the name of the java process */
126 jname = jprocess_get_name(jprocess_arg, env);
129 xbt_strdup("Internal error: Process name cannot be NULL"));
133 /* bind/retrieve the msg host */
134 host = MSG_get_host_by_name(hostname);
136 if (!(host)) { /* not bound */
137 jxbt_throw_host_not_found(env, hostname);
141 /* create a global java process instance */
142 jprocess = jprocess_new_global_ref(jprocess_arg, env);
144 jxbt_throw_jni(env, "Can't get a global ref to the java process");
148 /* build the C name of the process */
149 name = (*env)->GetStringUTFChars(env, jname, 0);
150 name = xbt_strdup(name);
152 /* Retrieve the kill time from the process */
153 jdouble jkill = (*env)->GetDoubleField(env, jprocess, jprocess_field_Process_killTime);
154 /* Actually build the MSG process */
155 process = MSG_process_create_with_environment(name,
156 (xbt_main_func_t) jprocess,
159 /*argc, argv, properties*/
161 MSG_process_set_kill_time(process, (double)jkill);
162 /* bind the java process instance to the native process */
163 jprocess_bind(jprocess, process, env);
165 /* release our reference to the process name (variable name becomes invalid) */
166 //FIXME : This line should be uncommented but with mac it doesn't work. BIG WARNING
167 //(*env)->ReleaseStringUTFChars(env, jname, name);
168 (*env)->ReleaseStringUTFChars(env, jhostname, hostname);
170 /* sets the PID and the PPID of the process */
171 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
172 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
173 /* sets the Host of the process */
174 jobject jhost = Java_org_simgrid_msg_Host_getByName(env,NULL,jhostname);
176 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
179 JNIEXPORT jint JNICALL
180 Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls,
183 return (jint) MSG_process_killall((int) jresetPID);
186 JNIEXPORT jobject JNICALL
187 Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls,
190 msg_process_t process = MSG_process_from_PID(PID);
193 jxbt_throw_process_not_found(env, bprintf("PID = %d",(int) PID));
197 jobject jprocess = native_to_java_process(process);
200 jxbt_throw_jni(env, "get process failed");
206 JNIEXPORT jobject JNICALL
207 Java_org_simgrid_msg_Process_getProperty(JNIEnv *env, jobject jprocess, jobject jname) {
208 msg_process_t process = jprocess_to_native_process(jprocess, env);
211 jxbt_throw_notbound(env, "process", jprocess);
214 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
216 const char *property = MSG_process_get_property_value(process, name);
221 jobject jproperty = (*env)->NewStringUTF(env, property);
223 (*env)->ReleaseStringUTFChars(env, jname, name);
227 JNIEXPORT jobject JNICALL
228 Java_org_simgrid_msg_Process_currentProcess(JNIEnv * env, jclass cls)
230 msg_process_t process = MSG_process_self();
234 jxbt_throw_jni(env, xbt_strdup("MSG_process_self() failed"));
238 jprocess = native_to_java_process(process);
241 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
246 JNIEXPORT void JNICALL
247 Java_org_simgrid_msg_Process_suspend(JNIEnv * env,
250 msg_process_t process = jprocess_to_native_process(jprocess, env);
253 jxbt_throw_notbound(env, "process", jprocess);
257 /* try to suspend the process */
258 msg_error_t rv = MSG_process_suspend(process);
260 jxbt_check_res("MSG_process_suspend()", rv, MSG_OK,
261 bprintf("unexpected error , please report this bug"));
265 JNIEXPORT void JNICALL
266 Java_org_simgrid_msg_Process_resume(JNIEnv * env,
269 msg_process_t process = jprocess_to_native_process(jprocess, env);
272 jxbt_throw_notbound(env, "process", jprocess);
276 /* try to resume the process */
277 msg_error_t rv = MSG_process_resume(process);
279 jxbt_check_res("MSG_process_resume()", rv, MSG_OK,
280 bprintf("unexpected error , please report this bug"));
282 JNIEXPORT void JNICALL
283 Java_org_simgrid_msg_Process_setAutoRestart
284 (JNIEnv *env, jobject jprocess, jboolean jauto_restart) {
285 msg_process_t process = jprocess_to_native_process(jprocess, env);
288 int auto_restart = jauto_restart == JNI_TRUE ? 1 : 0;
291 jxbt_throw_notbound(env, "process", jprocess);
296 MSG_process_auto_restart_set(process,auto_restart);
302 JNIEXPORT void JNICALL
303 Java_org_simgrid_msg_Process_restart
304 (JNIEnv *env, jobject jprocess) {
305 msg_process_t process = jprocess_to_native_process(jprocess, env);
309 jxbt_throw_notbound(env, "process", jprocess);
314 MSG_process_restart(process);
321 JNIEXPORT jboolean JNICALL
322 Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env,
325 msg_process_t process = jprocess_to_native_process(jprocess, env);
328 jxbt_throw_notbound(env, "process", jprocess);
332 /* true is the process is suspended, false otherwise */
333 return (jboolean) MSG_process_is_suspended(process);
336 JNIEXPORT void JNICALL
337 Java_org_simgrid_msg_Process_sleep(JNIEnv *env, jclass cls, jlong jmillis, jint jnanos)
339 double time = ((double)jmillis) / 1000 + ((double)jnanos) / 1000000000;
341 rv = MSG_process_sleep(time);
343 XBT_DEBUG("Something during the MSG_process_sleep invocation was wrong, trigger a HostFailureException");
345 //jmsg_throw_status(env,rv);
347 // adsein, the code above as been replaced by the code below. Indeed, according to the documentation, a sleep can only
348 // trigger a host_failure exception. When the sleep crashes due to a host shutdown, the exception thrown by smx_context_java.c
349 // 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
350 // function msg_error_t MSG_process_sleep(double nb_sec)
352 jxbt_throw_host_failure(env,NULL);
355 JNIEXPORT void JNICALL
356 Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess,
360 rv = MSG_process_sleep((double)jseconds);
361 if ((*env)->ExceptionOccurred(env))
364 XBT_DEBUG("Status NOK");
365 jmsg_throw_status(env,rv);
369 JNIEXPORT void JNICALL
370 Java_org_simgrid_msg_Process_kill(JNIEnv * env,
373 /* get the native instances from the java ones */
374 msg_process_t process = jprocess_to_native_process(jprocess, env);
376 jxbt_throw_notbound(env, "process", jprocess);
380 MSG_process_kill(process);
382 JNIEXPORT void JNICALL
383 Java_org_simgrid_msg_Process_migrate(JNIEnv * env,
384 jobject jprocess, jobject jhost)
386 msg_process_t process = jprocess_to_native_process(jprocess, env);
389 jxbt_throw_notbound(env, "process", jprocess);
393 msg_host_t host = jhost_get_native(env, jhost);
396 jxbt_throw_notbound(env, "host", jhost);
400 /* try to change the host of the process */
401 msg_error_t rv = MSG_process_migrate(process, host);
403 jmsg_throw_status(env,rv);
406 /* change the host java side */
407 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
409 JNIEXPORT void JNICALL
410 Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) {
411 msg_process_t process = jprocess_to_native_process(jprocess, env);
412 MSG_process_set_kill_time(process, (double)jkilltime);
415 JNIEXPORT jint JNICALL
416 Java_org_simgrid_msg_Process_getCount(JNIEnv * env, jclass cls) {
417 return (jint) MSG_process_get_number();