1 /* Functions related to the java process instances. */
3 /* Copyright (c) 2007, 2008, 2009, 2010. 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. */
8 #include "jmsg_process.h"
11 #include "jmsg_host.h"
12 #include "jxbt_utilities.h"
14 #include "smx_context_java.h"
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
18 static jfieldID jprocess_field_Process_pid;
19 static jfieldID jprocess_field_Process_ppid;
20 static jfieldID jprocess_field_Process_host;
22 jobject native_to_java_process(m_process_t process)
24 return ((smx_ctx_java_t)MSG_process_get_smx_ctx(process))->jprocess;
27 jobject jprocess_new_global_ref(jobject jprocess, JNIEnv * env)
29 return (*env)->NewGlobalRef(env, jprocess);
32 void jprocess_delete_global_ref(jobject jprocess, JNIEnv * env)
34 (*env)->DeleteGlobalRef(env, jprocess);
37 jboolean jprocess_is_alive(jobject jprocess, JNIEnv * env)
40 jxbt_get_smethod(env, "org/simgrid/msg/Process", "isAlive", "()Z");
45 return (*env)->CallBooleanMethod(env, jprocess, id);
48 void jprocess_join(jobject jprocess, JNIEnv * env)
51 jxbt_get_smethod(env, "org/simgrid/msg/Process", "join", "()V");
56 (*env)->CallVoidMethod(env, jprocess, id);
59 void jprocess_exit(jobject jprocess, JNIEnv * env)
62 jxbt_get_smethod(env, "org/simgrid/msg/Process", "interrupt", "()V");
67 (*env)->CallVoidMethod(env, jprocess, id);
70 void jprocess_yield(jobject jprocess, JNIEnv * env)
73 jxbt_get_smethod(env, "org/simgrid/msg/Process", "switchProcess", "()V");
78 (*env)->CallVoidMethod(env, jprocess, id);
81 void jprocess_lock_mutex(jobject jprocess, JNIEnv * env)
84 jxbt_get_smethod(env, "org/simgrid/msg/Process", "lockMutex", "()V");
89 (*env)->CallVoidMethod(env, jprocess, id);
92 void jprocess_unlock_mutex(jobject jprocess, JNIEnv * env)
95 jxbt_get_smethod(env, "org/simgrid/msg/Process", "unlockMutex", "()V");
100 (*env)->CallVoidMethod(env, jprocess, id);
104 void jprocess_signal_cond(jobject jprocess, JNIEnv * env)
107 jxbt_get_smethod(env, "org/simgrid/msg/Process", "signalCond", "()V");
112 (*env)->CallVoidMethod(env, jprocess, id);
115 void jprocess_wait_cond(jobject jprocess, JNIEnv * env)
118 jxbt_get_smethod(env, "org/simgrid/msg/Process", "waitCond", "()V");
123 (*env)->CallVoidMethod(env, jprocess, id);
127 void jprocess_start(jobject jprocess, JNIEnv * env)
130 jxbt_get_smethod(env, "org/simgrid/msg/Process", "start", "()V");
135 XBT_DEBUG("jprocess_start(jproc=%p,env=%p)", jprocess, env);
136 (*env)->CallVoidMethod(env, jprocess, id);
137 XBT_DEBUG("jprocess started");
140 m_process_t jprocess_to_native_process(jobject jprocess, JNIEnv * env)
142 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J");
147 return (m_process_t) (long) (*env)->GetLongField(env, jprocess, id);
150 void jprocess_bind(jobject jprocess, m_process_t process, JNIEnv * env)
152 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J");
156 (*env)->SetLongField(env, jprocess, id, (jlong) (long) (process));
159 jlong jprocess_get_id(jobject jprocess, JNIEnv * env)
161 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "id", "J");
166 return (*env)->GetLongField(env, jprocess, id);
169 jstring jprocess_get_name(jobject jprocess, JNIEnv * env)
171 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "name",
172 "Ljava/lang/String;");
178 jname = (jstring) (*env)->GetObjectField(env, jprocess, id);
180 return (*env)->NewGlobalRef(env, jname);
184 jboolean jprocess_is_valid(jobject jprocess, JNIEnv * env)
186 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J");
191 return (*env)->GetLongField(env, jprocess, id) ? JNI_TRUE : JNI_FALSE;
194 void jprocess_schedule(smx_context_t context)
199 env = get_current_thread_env();
201 id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "schedule", "()V");
204 XBT_CRITICAL("Cannot find java method org/simgrid/msg/Process/schedule()V");
208 (*env)->CallVoidMethod(env, ((smx_ctx_java_t) context)->jprocess, id);
213 void jprocess_unschedule(smx_context_t context)
218 env = get_current_thread_env();
221 id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "unschedule", "()V");
226 (*env)->CallVoidMethod(env, ((smx_ctx_java_t) context)->jprocess, id);
228 JNIEXPORT void JNICALL
229 Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) {
230 jclass jprocess_class_Process = (*env)->FindClass(env, "org/simgrid/msg/Process");
232 jprocess_field_Process_pid = jxbt_get_sfield(env, "org/simgrid/msg/Process", "pid", "I");
233 jprocess_field_Process_ppid = jxbt_get_sfield(env, "org/simgrid/msg/Process", "ppid", "I");
234 jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;");
236 JNIEXPORT void JNICALL
237 Java_org_simgrid_msg_Process_create(JNIEnv * env,
238 jobject jprocess_arg,
243 jobject jprocess; /* the global reference to the java process instance */
244 jstring jname; /* the name of the java process instance */
245 const char *name; /* the C name of the process */
246 const char *hostname;
247 m_process_t process; /* the native process to create */
248 m_host_t host; /* Where that process lives */
250 hostname = (*env)->GetStringUTFChars(env, jhostname, 0);
252 XBT_DEBUG("Java_org_simgrid_msg_MsgNative_processCreate(env=%p,jproc=%p,host=%s)",
253 env, jprocess_arg, hostname);
256 /* get the name of the java process */
257 jname = jprocess_get_name(jprocess_arg, env);
260 xbt_strdup("Internal error: Process name cannot be NULL"));
264 /* bind/retrieve the msg host */
265 host = MSG_get_host_by_name(hostname);
267 if (!(host)) { /* not binded */
268 jxbt_throw_host_not_found(env, hostname);
272 /* create a global java process instance */
273 jprocess = jprocess_new_global_ref(jprocess_arg, env);
275 jxbt_throw_jni(env, "Can't get a global ref to the java process");
279 /* build the C name of the process */
280 name = (*env)->GetStringUTFChars(env, jname, 0);
281 name = xbt_strdup(name);
283 /* Actually build the MSG process */
284 process = MSG_process_create_with_environment(name,
285 (xbt_main_func_t) jprocess,
289 /*argc, argv, properties*/
292 MSG_process_set_data(process,&process);
294 /* release our reference to the process name (variable name becomes invalid) */
295 //FIXME : This line should be uncommented but with mac it doesn't work. BIG WARNING
296 //(*env)->ReleaseStringUTFChars(env, jname, name);
297 (*env)->ReleaseStringUTFChars(env, jhostname, hostname);
299 /* bind the java process instance to the native process */
300 jprocess_bind(jprocess, process, env);
302 /* sets the PID and the PPID of the process */
303 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
304 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
305 /* sets the Host of the process */
306 jobject jhost = Java_org_simgrid_msg_Host_getByName(env,NULL,jhostname);
308 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
311 JNIEXPORT jint JNICALL
312 Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls,
315 return (jint) MSG_process_killall((int) jresetPID);
318 JNIEXPORT jobject JNICALL
319 Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls,
322 m_process_t process = MSG_process_from_PID(PID);
325 jxbt_throw_process_not_found(env, bprintf("PID = %d",(int) PID));
329 jobject jprocess = native_to_java_process(process);
332 jxbt_throw_jni(env, "SIMIX_process_get_jprocess() failed");
339 JNIEXPORT jobject JNICALL
340 Java_org_simgrid_msg_Process_currentProcess(JNIEnv * env, jclass cls)
342 m_process_t process = MSG_process_self();
346 jxbt_throw_jni(env, xbt_strdup("MSG_process_self() failed"));
350 jprocess = native_to_java_process(process);
353 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
358 JNIEXPORT void JNICALL
359 Java_org_simgrid_msg_Process_pause(JNIEnv * env,
362 m_process_t process = jprocess_to_native_process(jprocess, env);
365 jxbt_throw_notbound(env, "process", jprocess);
369 /* try to suspend the process */
370 MSG_error_t rv = MSG_process_suspend(process);
372 jxbt_check_res("MSG_process_suspend()", rv, MSG_OK,
373 bprintf("unexpected error , please report this bug"));
376 JNIEXPORT void JNICALL
377 Java_org_simgrid_msg_Process_restart(JNIEnv * env,
380 m_process_t process = jprocess_to_native_process(jprocess, env);
383 jxbt_throw_notbound(env, "process", jprocess);
387 /* try to resume the process */
388 MSG_error_t rv = MSG_process_resume(process);
390 jxbt_check_res("MSG_process_resume()", rv, MSG_OK,
391 bprintf("unexpected error , please report this bug"));
393 JNIEXPORT jboolean JNICALL
394 Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env,
397 m_process_t process = jprocess_to_native_process(jprocess, env);
400 jxbt_throw_notbound(env, "process", jprocess);
404 /* true is the process is suspended, false otherwise */
405 return (jboolean) MSG_process_is_suspended(process);
407 JNIEXPORT void JNICALL
408 Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess,
411 m_process_t process = jprocess_to_native_process(jprocess, env);
414 jxbt_throw_notbound(env, "process", jprocess);
417 MSG_error_t rv = MSG_process_sleep((double)jseconds);
419 jxbt_check_res("MSG_process_sleep()", rv, MSG_OK,
420 bprintf("unexpected error , please report this bug"));
424 JNIEXPORT void JNICALL
425 Java_org_simgrid_msg_Process_exit(JNIEnv * env,
429 m_process_t process = jprocess_to_native_process(jprocess, env);
432 jxbt_throw_notbound(env, "process", jprocess);
436 smx_ctx_java_stop(MSG_process_get_smx_ctx(process));
439 JNIEXPORT void JNICALL
440 Java_org_simgrid_msg_Process_kill(JNIEnv * env, jclass cls,
443 /* get the native instances from the java ones */
444 m_process_t process = jprocess_to_native_process(jprocess, env);
447 jxbt_throw_notbound(env, "process", jprocess);
451 /* kill the native process (this wrapper is call by the destructor of the java
454 MSG_process_kill(process);
456 JNIEXPORT void JNICALL
457 Java_org_simgrid_msg_Process_migrate(JNIEnv * env,
458 jobject jprocess, jobject jhost)
460 m_process_t process = jprocess_to_native_process(jprocess, env);
463 jxbt_throw_notbound(env, "process", jprocess);
467 m_host_t host = jhost_get_native(env, jhost);
470 jxbt_throw_notbound(env, "host", jhost);
474 /* try to change the host of the process */
475 MSG_error_t rv = MSG_process_migrate(process, host);
476 jxbt_check_res("MSG_process_migrate()", rv, MSG_OK,
477 bprintf("unexpected error , please report this bug"));
478 /* change the host java side */
479 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);