1 /* Functions related to the java process instances. */
3 /* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "jmsg_process.h"
10 #include "JavaContext.hpp"
12 #include "jmsg_host.h"
13 #include "jxbt_utilities.hpp"
14 #include "simgrid/Exception.hpp"
15 #include "src/simix/ActorImpl.hpp"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
19 jfieldID jprocess_field_Process_bind;
20 jfieldID jprocess_field_Process_host;
21 jfieldID jprocess_field_Process_killTime;
22 jfieldID jprocess_field_Process_name;
23 jfieldID jprocess_field_Process_pid;
24 jfieldID jprocess_field_Process_ppid;
26 jobject jprocess_from_native(msg_process_t process)
28 simgrid::kernel::context::JavaContext* context =
29 (simgrid::kernel::context::JavaContext*)process->get_impl()->context_;
30 return context->jprocess_;
33 jobject jprocess_ref(jobject jprocess, JNIEnv* env)
35 return env->NewGlobalRef(jprocess);
38 void jprocess_unref(jobject jprocess, JNIEnv* env)
40 env->DeleteGlobalRef(jprocess);
43 msg_process_t jprocess_to_native(jobject jprocess, JNIEnv* env)
45 return (msg_process_t)(intptr_t)env->GetLongField(jprocess, jprocess_field_Process_bind);
48 void jprocess_bind(jobject jprocess, msg_process_t process, JNIEnv * env)
50 env->SetLongField(jprocess, jprocess_field_Process_bind, (intptr_t)process);
53 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) {
54 jclass jprocess_class_Process = env->FindClass("org/simgrid/msg/Process");
55 xbt_assert(jprocess_class_Process, "Native initialization of msg/Process failed. Please report that bug");
57 jprocess_field_Process_name = jxbt_get_jfield(env, jprocess_class_Process, "name", "Ljava/lang/String;");
58 jprocess_field_Process_bind = jxbt_get_jfield(env, jprocess_class_Process, "bind", "J");
59 jprocess_field_Process_pid = jxbt_get_jfield(env, jprocess_class_Process, "pid", "I");
60 jprocess_field_Process_ppid = jxbt_get_jfield(env, jprocess_class_Process, "ppid", "I");
61 jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;");
62 jprocess_field_Process_killTime = jxbt_get_jfield(env, jprocess_class_Process, "killTime", "D");
63 xbt_assert(jprocess_field_Process_name && jprocess_field_Process_pid && jprocess_field_Process_ppid &&
64 jprocess_field_Process_host,
65 "Native initialization of msg/Process failed. Please report that bug");
68 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_create(JNIEnv* env, jobject jprocess_arg, jobject jhost)
70 /* create a global java process instance */
71 jobject jprocess = jprocess_ref(jprocess_arg, env);
73 /* Actually build the MSG process */
74 jstring jname = (jstring)env->GetObjectField(jprocess, jprocess_field_Process_name);
75 const char* name = env->GetStringUTFChars(jname, 0);
76 simgrid::simix::ActorCode function = [jprocess]() { simgrid::kernel::context::java_main_jprocess(jprocess); };
78 simcall_process_create(name, function, /*data*/ nullptr, jhost_get_native(env, jhost), /* properties*/ nullptr);
81 env->ReleaseStringUTFChars(jname, name);
83 /* Retrieve the kill time from the process */
84 actor->ciface()->set_kill_time((double)env->GetDoubleField(jprocess, jprocess_field_Process_killTime));
86 /* sets the PID and the PPID of the process */
87 env->SetIntField(jprocess, jprocess_field_Process_pid, (jint)actor->ciface()->get_pid());
88 env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint)actor->ciface()->get_ppid());
91 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_daemonize(JNIEnv* env, jobject jprocess)
93 msg_process_t process = jprocess_to_native(jprocess, env);
96 jxbt_throw_notbound(env, "process", jprocess);
100 process->daemonize();
103 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_killAll(JNIEnv* env, jclass cls)
105 MSG_process_killall();
108 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls, jint pid)
110 msg_process_t process = MSG_process_from_PID(pid);
113 jxbt_throw_process_not_found(env, std::string("PID = ") + std::to_string(static_cast<int>(pid)));
117 jobject jprocess = jprocess_from_native(process);
120 jxbt_throw_jni(env, "get process failed");
127 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_nativeGetPID(JNIEnv* env, jobject jprocess)
129 msg_process_t process = jprocess_to_native(jprocess, env);
130 return MSG_process_get_PID(process);
133 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getProperty(JNIEnv *env, jobject jprocess, jobject jname) {
134 msg_process_t process = jprocess_to_native(jprocess, env);
137 jxbt_throw_notbound(env, "process", jprocess);
140 const char *name = env->GetStringUTFChars((jstring)jname, 0);
142 const char *property = MSG_process_get_property_value(process, name);
146 jobject jproperty = env->NewStringUTF(property);
148 env->ReleaseStringUTFChars((jstring)jname, name);
153 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getCurrentProcess(JNIEnv * env, jclass cls)
155 jobject jprocess = jprocess_from_native(MSG_process_self());
157 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
162 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_suspend(JNIEnv * env, jobject jprocess)
164 msg_process_t process = jprocess_to_native(jprocess, env);
167 jxbt_throw_notbound(env, "process", jprocess);
171 /* suspend the process */
175 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_resume(JNIEnv * env, jobject jprocess)
177 msg_process_t process = jprocess_to_native(jprocess, env);
180 jxbt_throw_notbound(env, "process", jprocess);
184 /* resume the process */
189 JNICALL Java_org_simgrid_msg_Process_setAutoRestart (JNIEnv *env, jobject jprocess, jboolean jauto_restart) {
191 msg_process_t process = jprocess_to_native(jprocess, env);
193 jxbt_throw_notbound(env, "process", jprocess);
197 process->set_auto_restart(jauto_restart == JNI_TRUE);
200 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_restart (JNIEnv *env, jobject jprocess) {
201 msg_process_t process = jprocess_to_native(jprocess, env);
204 jxbt_throw_notbound(env, "process", jprocess);
211 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env, jobject jprocess)
213 msg_process_t process = jprocess_to_native(jprocess, env);
216 jxbt_throw_notbound(env, "process", jprocess);
220 /* true is the process is suspended, false otherwise */
221 return (jboolean)process->is_suspended();
224 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_sleep(JNIEnv *env, jclass cls, jlong jmillis, jint jnanos)
226 double time = ((double)jmillis) / 1000 + ((double)jnanos) / 1000000000;
229 rv = MSG_process_sleep(time);
230 } catch (simgrid::kernel::context::Context::StopRequest const&) {
231 rv = MSG_HOST_FAILURE;
234 XBT_DEBUG("Something during the MSG_process_sleep invocation was wrong, trigger a HostFailureException");
236 jxbt_throw_host_failure(env, "");
240 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess, jdouble jseconds)
243 rv = MSG_process_sleep((double)jseconds);
244 if (env->ExceptionOccurred())
247 XBT_DEBUG("Status NOK");
248 jmsg_throw_status(env,rv);
252 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_kill(JNIEnv * env, jobject jprocess)
254 /* get the native instances from the java ones */
255 msg_process_t process = jprocess_to_native(jprocess, env);
257 jxbt_throw_notbound(env, "process", jprocess);
261 MSG_process_kill(process);
262 } catch (xbt_ex& ex) {
263 XBT_VERB("Process %s just committed a suicide", MSG_process_get_name(process));
264 xbt_assert(process == MSG_process_self(),
265 "Killing a process should not raise an exception if it's not a suicide. Please report that bug.");
269 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_migrate(JNIEnv * env, jobject jprocess, jobject jhost)
271 msg_process_t process = jprocess_to_native(jprocess, env);
274 jxbt_throw_notbound(env, "process", jprocess);
278 msg_host_t host = jhost_get_native(env, jhost);
281 jxbt_throw_notbound(env, "host", jhost);
285 /* change the host of the process */
286 process->migrate(host);
288 /* change the host java side */
289 env->SetObjectField(jprocess, jprocess_field_Process_host, jhost);
292 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_yield(JNIEnv* env, jclass cls)
297 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) {
298 msg_process_t process = jprocess_to_native(jprocess, env);
299 MSG_process_set_kill_time(process, (double)jkilltime);
302 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_getCount(JNIEnv * env, jclass cls) {
303 return (jint) MSG_process_get_number();