1 /* Functions related to the java process instances. */
3 /* Copyright (c) 2007-2017. 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. */
10 #include "jmsg_process.h"
12 #include "JavaContext.hpp"
14 #include "jmsg_host.h"
15 #include "jxbt_utilities.hpp"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
21 jfieldID jprocess_field_Process_bind;
22 jfieldID jprocess_field_Process_host;
23 jfieldID jprocess_field_Process_killTime;
24 jfieldID jprocess_field_Process_name;
25 jfieldID jprocess_field_Process_pid;
26 jfieldID jprocess_field_Process_ppid;
28 jobject jprocess_from_native(msg_process_t process)
30 simgrid::kernel::context::JavaContext* context = (simgrid::kernel::context::JavaContext*) MSG_process_get_smx_ctx(process);
31 return context->jprocess;
34 jobject jprocess_ref(jobject jprocess, JNIEnv* env)
36 return env->NewGlobalRef(jprocess);
39 void jprocess_unref(jobject jprocess, JNIEnv* env)
41 env->DeleteGlobalRef(jprocess);
44 msg_process_t jprocess_to_native(jobject jprocess, JNIEnv* env)
46 return (msg_process_t)(intptr_t)env->GetLongField(jprocess, jprocess_field_Process_bind);
49 void jprocess_bind(jobject jprocess, msg_process_t process, JNIEnv * env)
51 env->SetLongField(jprocess, jprocess_field_Process_bind, (intptr_t)process);
54 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_nativeInit(JNIEnv *env, jclass cls) {
55 jclass jprocess_class_Process = env->FindClass("org/simgrid/msg/Process");
56 xbt_assert(jprocess_class_Process, "Native initialization of msg/Process failed. Please report that bug");
58 jprocess_field_Process_name = jxbt_get_jfield(env, jprocess_class_Process, "name", "Ljava/lang/String;");
59 jprocess_field_Process_bind = jxbt_get_jfield(env, jprocess_class_Process, "bind", "J");
60 jprocess_field_Process_pid = jxbt_get_jfield(env, jprocess_class_Process, "pid", "I");
61 jprocess_field_Process_ppid = jxbt_get_jfield(env, jprocess_class_Process, "ppid", "I");
62 jprocess_field_Process_host = jxbt_get_jfield(env, jprocess_class_Process, "host", "Lorg/simgrid/msg/Host;");
63 jprocess_field_Process_killTime = jxbt_get_jfield(env, jprocess_class_Process, "killTime", "D");
64 xbt_assert(jprocess_field_Process_name && jprocess_field_Process_pid && jprocess_field_Process_ppid &&
65 jprocess_field_Process_host,
66 "Native initialization of msg/Process failed. Please report that bug");
69 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_create(JNIEnv* env, jobject jprocess_arg, jobject jhost)
71 /* create a global java process instance */
72 jobject jprocess = jprocess_ref(jprocess_arg, env);
74 /* Actually build the MSG process */
75 jstring jname = (jstring)env->GetObjectField(jprocess, jprocess_field_Process_name);
76 const char* name = env->GetStringUTFChars(jname, 0);
77 msg_process_t process =
78 MSG_process_create_from_stdfunc(name, [jprocess]() { simgrid::kernel::context::java_main_jprocess(jprocess); },
79 /*data*/ nullptr, jhost_get_native(env, jhost), /* properties*/ nullptr);
80 env->ReleaseStringUTFChars(jname, name);
82 /* bind the java process instance to the native process */
83 jprocess_bind(jprocess, process, env);
85 /* Retrieve the kill time from the process */
86 jdouble jkill = env->GetDoubleField(jprocess, jprocess_field_Process_killTime);
87 MSG_process_set_kill_time(process, (double)jkill);
89 /* sets the PID and the PPID of the process */
90 env->SetIntField(jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
91 env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
94 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_daemonize(JNIEnv* env, jobject jprocess)
96 msg_process_t process = jprocess_to_native(jprocess, env);
99 jxbt_throw_notbound(env, "process", jprocess);
103 MSG_process_daemonize(process);
106 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_killAll(JNIEnv * env, jclass cls, jint jresetPID)
108 return (jint) MSG_process_killall((int) jresetPID);
111 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_fromPID(JNIEnv * env, jclass cls, jint pid)
113 msg_process_t process = MSG_process_from_PID(pid);
116 jxbt_throw_process_not_found(env, std::string("PID = ") + std::to_string(static_cast<int>(pid)));
120 jobject jprocess = jprocess_from_native(process);
123 jxbt_throw_jni(env, "get process failed");
130 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_nativeGetPID(JNIEnv* env, jobject jprocess)
132 msg_process_t process = jprocess_to_native(jprocess, env);
133 return MSG_process_get_PID(process);
136 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getProperty(JNIEnv *env, jobject jprocess, jobject jname) {
137 msg_process_t process = jprocess_to_native(jprocess, env);
140 jxbt_throw_notbound(env, "process", jprocess);
143 const char *name = env->GetStringUTFChars((jstring)jname, 0);
145 const char *property = MSG_process_get_property_value(process, name);
149 jobject jproperty = env->NewStringUTF(property);
151 env->ReleaseStringUTFChars((jstring)jname, name);
156 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Process_getCurrentProcess(JNIEnv * env, jclass cls)
158 jobject jprocess = jprocess_from_native(MSG_process_self());
160 jxbt_throw_jni(env, xbt_strdup("SIMIX_process_get_jprocess() failed"));
165 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_suspend(JNIEnv * env, jobject jprocess)
167 msg_process_t process = jprocess_to_native(jprocess, env);
170 jxbt_throw_notbound(env, "process", jprocess);
174 /* try to suspend the process */
175 msg_error_t rv = MSG_process_suspend(process);
177 jxbt_check_res("MSG_process_suspend()", rv, MSG_OK, "unexpected error , please report this bug");
180 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_resume(JNIEnv * env, jobject jprocess)
182 msg_process_t process = jprocess_to_native(jprocess, env);
185 jxbt_throw_notbound(env, "process", jprocess);
189 /* try to resume the process */
190 msg_error_t res = MSG_process_resume(process);
191 jxbt_check_res("MSG_process_resume()", res, MSG_OK, "unexpected error , please report this bug");
195 JNICALL Java_org_simgrid_msg_Process_setAutoRestart (JNIEnv *env, jobject jprocess, jboolean jauto_restart) {
197 msg_process_t process = jprocess_to_native(jprocess, env);
199 jxbt_throw_notbound(env, "process", jprocess);
203 process->setAutoRestart(jauto_restart == JNI_TRUE);
206 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_restart (JNIEnv *env, jobject jprocess) {
207 msg_process_t process = jprocess_to_native(jprocess, env);
210 jxbt_throw_notbound(env, "process", jprocess);
214 MSG_process_restart(process);
217 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Process_isSuspended(JNIEnv * env, jobject jprocess)
219 msg_process_t process = jprocess_to_native(jprocess, env);
222 jxbt_throw_notbound(env, "process", jprocess);
226 /* true is the process is suspended, false otherwise */
227 return (jboolean) MSG_process_is_suspended(process);
230 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_sleep(JNIEnv *env, jclass cls, jlong jmillis, jint jnanos)
232 double time = ((double)jmillis) / 1000 + ((double)jnanos) / 1000000000;
234 rv = MSG_process_sleep(time);
236 XBT_DEBUG("Something during the MSG_process_sleep invocation was wrong, trigger a HostFailureException");
238 jxbt_throw_host_failure(env, "");
242 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_waitFor(JNIEnv * env, jobject jprocess, jdouble jseconds)
245 rv = MSG_process_sleep((double)jseconds);
246 if (env->ExceptionOccurred())
249 XBT_DEBUG("Status NOK");
250 jmsg_throw_status(env,rv);
254 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_kill(JNIEnv * env, jobject jprocess)
256 /* get the native instances from the java ones */
257 msg_process_t process = jprocess_to_native(jprocess, env);
259 jxbt_throw_notbound(env, "process", jprocess);
263 MSG_process_kill(process);
264 } catch (xbt_ex& ex) {
265 XBT_VERB("Process %s just committed a suicide", MSG_process_get_name(process));
266 xbt_assert(process == MSG_process_self(),
267 "Killing a process should not raise an exception if it's not a suicide. Please report that bug.");
271 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_migrate(JNIEnv * env, jobject jprocess, jobject jhost)
273 msg_process_t process = jprocess_to_native(jprocess, env);
276 jxbt_throw_notbound(env, "process", jprocess);
280 msg_host_t host = jhost_get_native(env, jhost);
283 jxbt_throw_notbound(env, "host", jhost);
287 /* try to change the host of the process */
288 msg_error_t rv = MSG_process_migrate(process, host);
290 jmsg_throw_status(env,rv);
293 /* change the host java side */
294 env->SetObjectField(jprocess, jprocess_field_Process_host, jhost);
297 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_yield(JNIEnv* env, jclass cls)
302 JNIEXPORT void JNICALL Java_org_simgrid_msg_Process_setKillTime (JNIEnv *env , jobject jprocess, jdouble jkilltime) {
303 msg_process_t process = jprocess_to_native(jprocess, env);
304 MSG_process_set_kill_time(process, (double)jkilltime);
307 JNIEXPORT jint JNICALL Java_org_simgrid_msg_Process_getCount(JNIEnv * env, jclass cls) {
308 return (jint) MSG_process_get_number();