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"
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 m_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(m_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 m_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 m_process_t jprocess_to_native_process(jobject jprocess, JNIEnv * env)
51 return (m_process_t) (long) (*env)->GetLongField(env, jprocess, jprocess_field_Process_bind);
54 void jprocess_bind(jobject jprocess, m_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 m_process_t process; /* the native process to create */
108 m_host_t host; /* Where that process lives */
110 hostname = (*env)->GetStringUTFChars(env, jhostname, 0);
112 XBT_DEBUG("Java_org_simgrid_msg_MsgNative_processCreate(env=%p,jproc=%p,host=%s)",
113 env, jprocess_arg, hostname);
116 /* get the name of the java process */
117 jname = jprocess_get_name(jprocess_arg, env);
120 xbt_strdup("Internal error: Process name cannot be NULL"));
124 /* bind/retrieve the msg host */
125 host = MSG_get_host_by_name(hostname);
127 if (!(host)) { /* not binded */
128 jxbt_throw_host_not_found(env, hostname);
132 /* create a global java process instance */
133 jprocess = jprocess_new_global_ref(jprocess_arg, env);
135 jxbt_throw_jni(env, "Can't get a global ref to the java process");
139 /* build the C name of the process */
140 name = (*env)->GetStringUTFChars(env, jname, 0);
141 name = xbt_strdup(name);
143 /* Retrieve the kill time from the process */
144 jdouble jkill = (*env)->GetDoubleField(env, jprocess, jprocess_field_Process_killTime);
145 /* Actually build the MSG process */
146 process = MSG_process_create_with_environment(name,
147 (xbt_main_func_t) jprocess,
150 /*argc, argv, properties*/
152 MSG_process_set_kill_time(process, (double)jkill);
153 MSG_process_set_data(process,&process);
154 /* bind the java process instance to the native process */
155 jprocess_bind(jprocess, process, env);
157 /* release our reference to the process name (variable name becomes invalid) */
158 //FIXME : This line should be uncommented but with mac it doesn't work. BIG WARNING
159 //(*env)->ReleaseStringUTFChars(env, jname, name);
160 (*env)->ReleaseStringUTFChars(env, jhostname, hostname);
162 /* sets the PID and the PPID of the process */
163 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
164 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
165 /* sets the Host of the process */
166 jobject jhost = Java_org_simgrid_msg_Host_getByName(env,NULL,jhostname);
168 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
171 JNIEXPORT jint JNICALL
172 Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls,
175 return (jint) MSG_process_killall((int) jresetPID);
178 JNIEXPORT jobject JNICALL
179 Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls,
182 m_process_t process = MSG_process_from_PID(PID);
185 jxbt_throw_process_not_found(env, bprintf("PID = %d",(int) PID));
189 jobject jprocess = native_to_java_process(process);
192 jxbt_throw_jni(env, "SIMIX_process_get_jprocess() failed");
199 JNIEXPORT jobject JNICALL
200 Java_org_simgrid_msg_Process_currentProcess(JNIEnv * env, jclass cls)
202 m_process_t process = MSG_process_self();
206 jxbt_throw_jni(env, xbt_strdup("MSG_process_self() failed"));
210 jprocess = native_to_java_process(process);
213 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
218 JNIEXPORT void JNICALL
219 Java_org_simgrid_msg_Process_pause(JNIEnv * env,
222 m_process_t process = jprocess_to_native_process(jprocess, env);
225 jxbt_throw_notbound(env, "process", jprocess);
229 /* try to suspend the process */
230 MSG_error_t rv = MSG_process_suspend(process);
232 jxbt_check_res("MSG_process_suspend()", rv, MSG_OK,
233 bprintf("unexpected error , please report this bug"));
236 JNIEXPORT void JNICALL
237 Java_org_simgrid_msg_Process_restart(JNIEnv * env,
240 m_process_t process = jprocess_to_native_process(jprocess, env);
243 jxbt_throw_notbound(env, "process", jprocess);
247 /* try to resume the process */
248 MSG_error_t rv = MSG_process_resume(process);
250 jxbt_check_res("MSG_process_resume()", rv, MSG_OK,
251 bprintf("unexpected error , please report this bug"));
253 JNIEXPORT jboolean JNICALL
254 Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env,
257 m_process_t process = jprocess_to_native_process(jprocess, env);
260 jxbt_throw_notbound(env, "process", jprocess);
264 /* true is the process is suspended, false otherwise */
265 return (jboolean) MSG_process_is_suspended(process);
268 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_sleep
269 (JNIEnv *env, jclass cls, jlong jmillis, jint jnanos) {
271 double time = jmillis / 1000 + jnanos / 1000;
274 rv = MSG_process_sleep(time);
280 jmsg_throw_status(env,rv);
283 JNIEXPORT void JNICALL
284 Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess,
289 rv = MSG_process_sleep((double)jseconds);
295 XBT_INFO("Status NOK");
296 jmsg_throw_status(env,rv);
300 JNIEXPORT void JNICALL
301 Java_org_simgrid_msg_Process_kill(JNIEnv * env,
304 /* get the native instances from the java ones */
305 m_process_t process = jprocess_to_native_process(jprocess, env);
307 jxbt_throw_notbound(env, "process", jprocess);
311 MSG_process_kill(process);
313 JNIEXPORT void JNICALL
314 Java_org_simgrid_msg_Process_migrate(JNIEnv * env,
315 jobject jprocess, jobject jhost)
317 m_process_t process = jprocess_to_native_process(jprocess, env);
320 jxbt_throw_notbound(env, "process", jprocess);
324 m_host_t host = jhost_get_native(env, jhost);
327 jxbt_throw_notbound(env, "host", jhost);
331 /* try to change the host of the process */
332 MSG_error_t rv = MSG_process_migrate(process, host);
333 jxbt_check_res("MSG_process_migrate()", rv, MSG_OK,
334 bprintf("unexpected error , please report this bug"));
335 /* change the host java side */
336 (*env)->SetObjectField(env, jprocess, jprocess_field_Process_host, jhost);
338 JNIEXPORT void JNICALL
339 Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) {
340 m_process_t process = jprocess_to_native_process(jprocess, env);
341 MSG_process_set_kill_time(process, (double)jkilltime);