1 /* Functions related to the java process instances. */
3 /* Copyright (c) 2007-2012. 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"
13 #include "smx_context_java.h"
14 #include "smx_context_cojava.h"
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
18 jfieldID jprocess_field_Process_bind;
19 jfieldID jprocess_field_Process_host;
20 jfieldID jprocess_field_Process_killTime;
21 jfieldID jprocess_field_Process_id;
22 jfieldID jprocess_field_Process_name;
23 jfieldID jprocess_field_Process_pid;
24 jfieldID jprocess_field_Process_ppid;
26 JNIEXPORT void JNICALL
27 Java_org_simgrid_msg_Process_exit(JNIEnv *env, jobject jprocess) {
28 if (smx_factory_initializer_to_use == SIMIX_ctx_cojava_factory_init) {
29 msg_process_t process = jprocess_to_native_process(jprocess, env);
30 smx_context_t context = MSG_process_get_smx_ctx(process);
31 smx_ctx_cojava_stop(context);
35 jobject native_to_java_process(msg_process_t process)
37 return ((smx_ctx_java_t)MSG_process_get_smx_ctx(process))->jprocess;
40 jobject jprocess_new_global_ref(jobject jprocess, JNIEnv * env)
42 return (*env)->NewGlobalRef(env, jprocess);
45 void jprocess_delete_global_ref(jobject jprocess, JNIEnv * env)
47 (*env)->DeleteGlobalRef(env, jprocess);
50 void jprocess_join(jobject jprocess, JNIEnv * env)
52 msg_process_t process = jprocess_to_native_process(jprocess,env);
53 smx_ctx_java_t context = (smx_ctx_java_t)MSG_process_get_smx_ctx(process);
54 xbt_os_thread_join(context->thread,NULL);
57 msg_process_t jprocess_to_native_process(jobject jprocess, JNIEnv * env)
60 (msg_process_t)(intptr_t)(*env)->GetLongField(env, jprocess,
61 jprocess_field_Process_bind);
64 void jprocess_bind(jobject jprocess, msg_process_t process, JNIEnv * env)
66 (*env)->SetLongField(env, jprocess, jprocess_field_Process_bind,
70 jlong jprocess_get_id(jobject jprocess, JNIEnv * env)
73 (intptr_t)(*env)->GetLongField(env, jprocess, jprocess_field_Process_id);
76 jstring jprocess_get_name(jobject jprocess, JNIEnv * env)
78 jstring jname = (jstring) (*env)->GetObjectField(env, jprocess, jprocess_field_Process_name);
79 return (*env)->NewGlobalRef(env, jname);
83 jboolean jprocess_is_valid(jobject jprocess, JNIEnv * env)
85 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J");
90 return (*env)->GetLongField(env, jprocess, id) ? JNI_TRUE : JNI_FALSE;
92 JNIEXPORT void JNICALL
93 Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) {
94 jclass jprocess_class_Process = (*env)->FindClass(env, "org/simgrid/msg/Process");
96 jprocess_field_Process_name = jxbt_get_jfield(env, jprocess_class_Process, "name", "Ljava/lang/String;");
97 jprocess_field_Process_bind = jxbt_get_jfield(env, jprocess_class_Process, "bind", "J");
98 jprocess_field_Process_id = jxbt_get_jfield(env, jprocess_class_Process, "id", "J");
99 jprocess_field_Process_pid = jxbt_get_jfield(env, jprocess_class_Process, "pid", "I");
100 jprocess_field_Process_ppid = jxbt_get_jfield(env, jprocess_class_Process, "ppid", "I");
101 jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;");
102 jprocess_field_Process_killTime = jxbt_get_jfield(env, jprocess_class_Process, "killTime", "D");
103 if (!jprocess_class_Process || !jprocess_field_Process_id || !jprocess_field_Process_name || !jprocess_field_Process_pid ||
104 !jprocess_field_Process_ppid || !jprocess_field_Process_host) {
105 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
108 JNIEXPORT void JNICALL
109 Java_org_simgrid_msg_Process_create(JNIEnv * env,
110 jobject jprocess_arg,
115 jobject jprocess; /* the global reference to the java process instance */
116 jstring jname; /* the name of the java process instance */
117 const char *name; /* the C name of the process */
118 const char *hostname;
119 msg_process_t process; /* the native process to create */
120 msg_host_t host; /* Where that process lives */
122 hostname = (*env)->GetStringUTFChars(env, jhostname, 0);
124 /* get the name of the java process */
125 jname = jprocess_get_name(jprocess_arg, env);
128 xbt_strdup("Internal error: Process name cannot be NULL"));
132 /* bind/retrieve the msg host */
133 host = MSG_get_host_by_name(hostname);
135 if (!(host)) { /* not bound */
136 jxbt_throw_host_not_found(env, hostname);
140 /* create a global java process instance */
141 jprocess = jprocess_new_global_ref(jprocess_arg, env);
143 jxbt_throw_jni(env, "Can't get a global ref to the java process");
147 /* build the C name of the process */
148 name = (*env)->GetStringUTFChars(env, jname, 0);
149 name = xbt_strdup(name);
151 /* Retrieve the kill time from the process */
152 jdouble jkill = (*env)->GetDoubleField(env, jprocess, jprocess_field_Process_killTime);
153 /* Actually build the MSG process */
154 process = MSG_process_create_with_environment(name,
155 (xbt_main_func_t) jprocess,
158 /*argc, argv, properties*/
160 MSG_process_set_kill_time(process, (double)jkill);
161 /* bind the java process instance to the native process */
162 jprocess_bind(jprocess, process, env);
164 /* release our reference to the process name (variable name becomes invalid) */
165 //FIXME : This line should be uncommented but with mac it doesn't work. BIG WARNING
166 //(*env)->ReleaseStringUTFChars(env, jname, name);
167 (*env)->ReleaseStringUTFChars(env, jhostname, hostname);
169 /* sets the PID and the PPID of the process */
170 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
171 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
172 /* sets the Host of the process */
173 jobject jhost = Java_org_simgrid_msg_Host_getByName(env,NULL,jhostname);
175 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
178 JNIEXPORT jint JNICALL
179 Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls,
182 return (jint) MSG_process_killall((int) jresetPID);
185 JNIEXPORT jobject JNICALL
186 Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls,
189 msg_process_t process = MSG_process_from_PID(PID);
192 jxbt_throw_process_not_found(env, bprintf("PID = %d",(int) PID));
196 jobject jprocess = native_to_java_process(process);
199 jxbt_throw_jni(env, "get process failed");
205 JNIEXPORT jobject JNICALL
206 Java_org_simgrid_msg_Process_getProperty(JNIEnv *env, jobject jprocess, jobject jname) {
207 msg_process_t process = jprocess_to_native_process(jprocess, env);
210 jxbt_throw_notbound(env, "process", jprocess);
213 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
215 const char *property = MSG_process_get_property_value(process, name);
220 jobject jproperty = (*env)->NewStringUTF(env, property);
222 (*env)->ReleaseStringUTFChars(env, jname, name);
226 JNIEXPORT jobject JNICALL
227 Java_org_simgrid_msg_Process_currentProcess(JNIEnv * env, jclass cls)
229 msg_process_t process = MSG_process_self();
233 jxbt_throw_jni(env, xbt_strdup("MSG_process_self() failed"));
237 jprocess = native_to_java_process(process);
240 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
245 JNIEXPORT void JNICALL
246 Java_org_simgrid_msg_Process_suspend(JNIEnv * env,
249 msg_process_t process = jprocess_to_native_process(jprocess, env);
252 jxbt_throw_notbound(env, "process", jprocess);
256 /* try to suspend the process */
257 msg_error_t rv = MSG_process_suspend(process);
259 jxbt_check_res("MSG_process_suspend()", rv, MSG_OK,
260 bprintf("unexpected error , please report this bug"));
264 JNIEXPORT void JNICALL
265 Java_org_simgrid_msg_Process_resume(JNIEnv * env,
268 msg_process_t process = jprocess_to_native_process(jprocess, env);
271 jxbt_throw_notbound(env, "process", jprocess);
275 /* try to resume the process */
276 msg_error_t rv = MSG_process_resume(process);
278 jxbt_check_res("MSG_process_resume()", rv, MSG_OK,
279 bprintf("unexpected error , please report this bug"));
281 JNIEXPORT void JNICALL
282 Java_org_simgrid_msg_Process_setAutoRestart
283 (JNIEnv *env, jobject jprocess, jboolean jauto_restart) {
284 msg_process_t process = jprocess_to_native_process(jprocess, env);
287 int auto_restart = jauto_restart == JNI_TRUE ? 1 : 0;
290 jxbt_throw_notbound(env, "process", jprocess);
295 MSG_process_auto_restart_set(process,auto_restart);
301 JNIEXPORT void JNICALL
302 Java_org_simgrid_msg_Process_restart
303 (JNIEnv *env, jobject jprocess) {
304 msg_process_t process = jprocess_to_native_process(jprocess, env);
308 jxbt_throw_notbound(env, "process", jprocess);
313 MSG_process_restart(process);
320 JNIEXPORT jboolean JNICALL
321 Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env,
324 msg_process_t process = jprocess_to_native_process(jprocess, env);
327 jxbt_throw_notbound(env, "process", jprocess);
331 /* true is the process is suspended, false otherwise */
332 return (jboolean) MSG_process_is_suspended(process);
335 JNIEXPORT void JNICALL
336 Java_org_simgrid_msg_Process_sleep(JNIEnv *env, jclass cls, jlong jmillis, jint jnanos)
338 double time = jmillis / 1000 + jnanos / 1000;
340 rv = MSG_process_sleep(time);
342 jmsg_throw_status(env,rv);
345 JNIEXPORT void JNICALL
346 Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess,
350 rv = MSG_process_sleep((double)jseconds);
351 if ((*env)->ExceptionOccurred(env))
354 XBT_DEBUG("Status NOK");
355 jmsg_throw_status(env,rv);
359 JNIEXPORT void JNICALL
360 Java_org_simgrid_msg_Process_kill(JNIEnv * env,
363 /* get the native instances from the java ones */
364 msg_process_t process = jprocess_to_native_process(jprocess, env);
366 jxbt_throw_notbound(env, "process", jprocess);
370 MSG_process_kill(process);
372 JNIEXPORT void JNICALL
373 Java_org_simgrid_msg_Process_migrate(JNIEnv * env,
374 jobject jprocess, jobject jhost)
376 msg_process_t process = jprocess_to_native_process(jprocess, env);
379 jxbt_throw_notbound(env, "process", jprocess);
383 msg_host_t host = jhost_get_native(env, jhost);
386 jxbt_throw_notbound(env, "host", jhost);
390 /* try to change the host of the process */
391 msg_error_t rv = MSG_process_migrate(process, host);
393 jmsg_throw_status(env,rv);
396 /* change the host java side */
397 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
399 JNIEXPORT void JNICALL
400 Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) {
401 msg_process_t process = jprocess_to_native_process(jprocess, env);
402 MSG_process_set_kill_time(process, (double)jkilltime);
405 JNIEXPORT jint JNICALL
406 Java_org_simgrid_msg_Process_getCount(JNIEnv * env, jclass cls) {
407 /* FIXME: the next test on SimGrid version is to ensure that this still compiles with SG 3.8 while the C function were added in SG 3.9 only.
408 * This kind of pimple becomes mandatory when you get so slow to release the java version that it begins evolving further after the C release date.
410 #if SIMGRID_VERSION >= 30900
411 return (jint) MSG_process_get_number();