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 JNIEXPORT void JNICALL
19 Java_org_simgrid_msg_Process_exit(JNIEnv *env, jobject jprocess) {
20 if (smx_factory_initializer_to_use == SIMIX_ctx_cojava_factory_init) {
21 msg_process_t process = jprocess_to_native_process(jprocess, env);
22 smx_context_t context = MSG_process_get_smx_ctx(process);
23 smx_ctx_cojava_stop(context);
27 jobject native_to_java_process(msg_process_t process)
29 return ((smx_ctx_java_t)MSG_process_get_smx_ctx(process))->jprocess;
32 jobject jprocess_new_global_ref(jobject jprocess, JNIEnv * env)
34 return (*env)->NewGlobalRef(env, jprocess);
37 void jprocess_delete_global_ref(jobject jprocess, JNIEnv * env)
39 (*env)->DeleteGlobalRef(env, jprocess);
42 void jprocess_join(jobject jprocess, JNIEnv * env)
44 msg_process_t process = jprocess_to_native_process(jprocess,env);
45 smx_ctx_java_t context = (smx_ctx_java_t)MSG_process_get_smx_ctx(process);
46 xbt_os_thread_join(context->thread,NULL);
49 msg_process_t jprocess_to_native_process(jobject jprocess, JNIEnv * env)
51 return (msg_process_t) (long) (*env)->GetLongField(env, jprocess, jprocess_field_Process_bind);
54 void jprocess_bind(jobject jprocess, msg_process_t process, JNIEnv * env)
56 (*env)->SetLongField(env, jprocess, jprocess_field_Process_bind, (jlong)(process));
59 jlong jprocess_get_id(jobject jprocess, JNIEnv * env)
61 return (*env)->GetLongField(env, jprocess, jprocess_field_Process_id);
64 jstring jprocess_get_name(jobject jprocess, JNIEnv * env)
66 jstring jname = (jstring) (*env)->GetObjectField(env, jprocess, jprocess_field_Process_name);
67 return (*env)->NewGlobalRef(env, jname);
71 jboolean jprocess_is_valid(jobject jprocess, JNIEnv * env)
73 jfieldID id = jxbt_get_sfield(env, "org/simgrid/msg/Process", "bind", "J");
78 return (*env)->GetLongField(env, jprocess, id) ? JNI_TRUE : JNI_FALSE;
80 JNIEXPORT void JNICALL
81 Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) {
82 jclass jprocess_class_Process = (*env)->FindClass(env, "org/simgrid/msg/Process");
84 jprocess_field_Process_name = jxbt_get_jfield(env, jprocess_class_Process, "name", "Ljava/lang/String;");
85 jprocess_field_Process_bind = jxbt_get_jfield(env, jprocess_class_Process, "bind", "J");
86 jprocess_field_Process_id = jxbt_get_jfield(env, jprocess_class_Process, "id", "J");
87 jprocess_field_Process_pid = jxbt_get_jfield(env, jprocess_class_Process, "pid", "I");
88 jprocess_field_Process_ppid = jxbt_get_jfield(env, jprocess_class_Process, "ppid", "I");
89 jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;");
90 jprocess_field_Process_killTime = jxbt_get_jfield(env, jprocess_class_Process, "killTime", "D");
91 if (!jprocess_class_Process || !jprocess_field_Process_id || !jprocess_field_Process_name || !jprocess_field_Process_pid ||
92 !jprocess_field_Process_ppid || !jprocess_field_Process_host) {
93 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
96 JNIEXPORT void JNICALL
97 Java_org_simgrid_msg_Process_create(JNIEnv * env,
103 jobject jprocess; /* the global reference to the java process instance */
104 jstring jname; /* the name of the java process instance */
105 const char *name; /* the C name of the process */
106 const char *hostname;
107 msg_process_t process; /* the native process to create */
108 msg_host_t host; /* Where that process lives */
110 hostname = (*env)->GetStringUTFChars(env, jhostname, 0);
112 /* get the name of the java process */
113 jname = jprocess_get_name(jprocess_arg, env);
116 xbt_strdup("Internal error: Process name cannot be NULL"));
120 /* bind/retrieve the msg host */
121 host = MSG_get_host_by_name(hostname);
123 if (!(host)) { /* not binded */
124 jxbt_throw_host_not_found(env, hostname);
128 /* create a global java process instance */
129 jprocess = jprocess_new_global_ref(jprocess_arg, env);
131 jxbt_throw_jni(env, "Can't get a global ref to the java process");
135 /* build the C name of the process */
136 name = (*env)->GetStringUTFChars(env, jname, 0);
137 name = xbt_strdup(name);
139 /* Retrieve the kill time from the process */
140 jdouble jkill = (*env)->GetDoubleField(env, jprocess, jprocess_field_Process_killTime);
141 /* Actually build the MSG process */
142 process = MSG_process_create_with_environment(name,
143 (xbt_main_func_t) jprocess,
146 /*argc, argv, properties*/
148 MSG_process_set_kill_time(process, (double)jkill);
149 /* bind the java process instance to the native process */
150 jprocess_bind(jprocess, process, env);
152 /* release our reference to the process name (variable name becomes invalid) */
153 //FIXME : This line should be uncommented but with mac it doesn't work. BIG WARNING
154 //(*env)->ReleaseStringUTFChars(env, jname, name);
155 (*env)->ReleaseStringUTFChars(env, jhostname, hostname);
157 /* sets the PID and the PPID of the process */
158 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
159 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
160 /* sets the Host of the process */
161 jobject jhost = Java_org_simgrid_msg_Host_getByName(env,NULL,jhostname);
163 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
166 JNIEXPORT jint JNICALL
167 Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls,
170 return (jint) MSG_process_killall((int) jresetPID);
173 JNIEXPORT jobject JNICALL
174 Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls,
177 msg_process_t process = MSG_process_from_PID(PID);
180 jxbt_throw_process_not_found(env, bprintf("PID = %d",(int) PID));
184 jobject jprocess = native_to_java_process(process);
187 jxbt_throw_jni(env, "get process failed");
193 JNIEXPORT jobject JNICALL
194 Java_org_simgrid_msg_Process_getProperty(JNIEnv *env, jobject jprocess, jobject jname) {
195 msg_process_t process = jprocess_to_native_process(jprocess, env);
198 jxbt_throw_notbound(env, "process", jprocess);
201 const char *name = (*env)->GetStringUTFChars(env, jname, 0);
203 const char *property = MSG_process_get_property_value(process, name);
208 jobject jproperty = (*env)->NewStringUTF(env, property);
210 (*env)->ReleaseStringUTFChars(env, jname, name);
214 JNIEXPORT jobject JNICALL
215 Java_org_simgrid_msg_Process_currentProcess(JNIEnv * env, jclass cls)
217 msg_process_t process = MSG_process_self();
221 jxbt_throw_jni(env, xbt_strdup("MSG_process_self() failed"));
225 jprocess = native_to_java_process(process);
228 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
233 JNIEXPORT void JNICALL
234 Java_org_simgrid_msg_Process_suspend(JNIEnv * env,
237 msg_process_t process = jprocess_to_native_process(jprocess, env);
240 jxbt_throw_notbound(env, "process", jprocess);
244 /* try to suspend the process */
245 msg_error_t rv = MSG_process_suspend(process);
247 jxbt_check_res("MSG_process_suspend()", rv, MSG_OK,
248 bprintf("unexpected error , please report this bug"));
252 JNIEXPORT void JNICALL
253 Java_org_simgrid_msg_Process_resume(JNIEnv * env,
256 msg_process_t process = jprocess_to_native_process(jprocess, env);
259 jxbt_throw_notbound(env, "process", jprocess);
263 /* try to resume the process */
264 msg_error_t rv = MSG_process_resume(process);
266 jxbt_check_res("MSG_process_resume()", rv, MSG_OK,
267 bprintf("unexpected error , please report this bug"));
269 JNIEXPORT void JNICALL
270 Java_org_simgrid_msg_Process_setAutoRestart
271 (JNIEnv *env, jobject jprocess, jboolean jauto_restart) {
272 msg_process_t process = jprocess_to_native_process(jprocess, env);
275 int auto_restart = jauto_restart == JNI_TRUE ? 1 : 0;
278 jxbt_throw_notbound(env, "process", jprocess);
283 MSG_process_auto_restart_set(process,auto_restart);
289 JNIEXPORT void JNICALL
290 Java_org_simgrid_msg_Process_restart
291 (JNIEnv *env, jobject jprocess) {
292 msg_process_t process = jprocess_to_native_process(jprocess, env);
296 jxbt_throw_notbound(env, "process", jprocess);
301 MSG_process_restart(process);
308 JNIEXPORT jboolean JNICALL
309 Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env,
312 msg_process_t process = jprocess_to_native_process(jprocess, env);
315 jxbt_throw_notbound(env, "process", jprocess);
319 /* true is the process is suspended, false otherwise */
320 return (jboolean) MSG_process_is_suspended(process);
323 JNIEXPORT void JNICALL
324 Java_org_simgrid_msg_Process_sleep
325 (JNIEnv *env, jclass cls, jlong jmillis, jint jnanos) {
327 double time = jmillis / 1000 + jnanos / 1000;
331 rv = MSG_process_sleep(time);
338 jmsg_throw_status(env,rv);
341 JNIEXPORT void JNICALL
342 Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess,
348 rv = MSG_process_sleep((double)jseconds);
355 XBT_INFO("Status NOK");
356 jmsg_throw_status(env,rv);
360 JNIEXPORT void JNICALL
361 Java_org_simgrid_msg_Process_kill(JNIEnv * env,
364 /* get the native instances from the java ones */
365 msg_process_t process = jprocess_to_native_process(jprocess, env);
367 jxbt_throw_notbound(env, "process", jprocess);
371 MSG_process_kill(process);
373 JNIEXPORT void JNICALL
374 Java_org_simgrid_msg_Process_migrate(JNIEnv * env,
375 jobject jprocess, jobject jhost)
377 msg_process_t process = jprocess_to_native_process(jprocess, env);
380 jxbt_throw_notbound(env, "process", jprocess);
384 msg_host_t host = jhost_get_native(env, jhost);
387 jxbt_throw_notbound(env, "host", jhost);
391 /* try to change the host of the process */
392 msg_error_t rv = MSG_process_migrate(process, host);
394 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();