1 /* Java Wrappers to the MSG API. */
3 /* Copyright (c) 2007-2015. 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. */
9 #include <simgrid/msg.h>
10 #include <simgrid/simix.h>
11 #include <surf/surfxml_parse.h>
13 #include <src/simix/smx_private.h>
15 #include "jmsg_process.h"
19 #include "jmsg_host.h"
20 #include "jmsg_storage.h"
21 #include "jmsg_task.h"
22 #include "jxbt_utilities.h"
26 #include "JavaContext.hpp"
28 /* Shut up some errors in eclipse online compiler. I wish such a pimple wouldn't be needed */
35 /* end of eclipse-mandated pimple */
40 int JAVA_STORAGE_LEVEL;
42 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
44 JavaVM *__java_vm = NULL;
46 JavaVM *get_java_VM(void)
51 JNIEnv *get_current_thread_env(void)
55 __java_vm->AttachCurrentThread((void **) &env, NULL);
59 void jmsg_throw_status(JNIEnv *env, msg_error_t status) {
62 jxbt_throw_time_out_failure(env,NULL);
64 case MSG_TRANSFER_FAILURE:
65 jxbt_throw_transfer_failure(env,NULL);
67 case MSG_HOST_FAILURE:
68 jxbt_throw_host_failure(env,NULL);
70 case MSG_TASK_CANCELED:
71 jxbt_throw_task_cancelled(env,NULL);
74 jxbt_throw_native(env,xbt_strdup("undefined message failed "
75 "(please see jmsg_throw_status function in jmsg.cpp)"));
80 /***************************************************************************************
81 * Unsortable functions *
82 ***************************************************************************************/
84 JNIEXPORT jdouble JNICALL
85 Java_org_simgrid_msg_Msg_getClock(JNIEnv * env, jclass cls)
87 return (jdouble) MSG_get_clock();
90 static void __JAVA_host_priv_free(void *host)
94 static void __JAVA_storage_priv_free(void *storage)
98 JNIEXPORT void JNICALL
99 Java_org_simgrid_msg_Msg_init(JNIEnv * env, jclass cls, jobjectArray jargs)
107 XBT_LOG_CONNECT(jmsg);
108 XBT_LOG_CONNECT(jtrace);
110 env->GetJavaVM(&__java_vm);
112 simgrid::simix::factory_initializer = simgrid::java::java_factory;
113 jthrowable exc = env->ExceptionOccurred();
115 env->ExceptionClear();
118 setlocale(LC_NUMERIC,"C");
121 argc = (int) env->GetArrayLength(jargs);
124 argv = xbt_new(char *, argc + 1);
125 argv[0] = xbt_strdup("java");
127 for (index = 0; index < argc - 1; index++) {
128 jval = (jstring) env->GetObjectArrayElement(jargs, index);
129 tmp = env->GetStringUTFChars(jval, 0);
130 argv[index + 1] = xbt_strdup(tmp);
131 env->ReleaseStringUTFChars(jval, tmp);
135 MSG_init(&argc, argv);
137 JAVA_HOST_LEVEL = simgrid::Host::add_level(__JAVA_host_priv_free);
138 JAVA_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, __JAVA_storage_priv_free);
140 for (index = 0; index < argc; index++)
146 JNIEXPORT void JNICALL
147 JNICALL Java_org_simgrid_msg_Msg_run(JNIEnv * env, jclass cls)
150 XBT_DEBUG("Ready to run MSG_MAIN");
151 msg_error_t rv = MSG_main();
152 XBT_DEBUG("Done running MSG_MAIN");
153 jxbt_check_res("MSG_main()", rv, MSG_OK,
154 xbt_strdup("unexpected error : MSG_main() failed .. please report this bug "));
156 XBT_INFO("MSG_main finished; Cleaning up the simulation...");
157 /* Cleanup java hosts */
158 xbt_dynar_t hosts = MSG_hosts_as_dynar();
159 for (unsigned long index = 0; index < xbt_dynar_length(hosts) - 1; index++) {
160 msg_host_t msg_host = xbt_dynar_get_as(hosts,index,msg_host_t);
161 jobject jhost = (jobject) msg_host->facet(JAVA_HOST_LEVEL);
163 jhost_unref(env, jhost);
166 xbt_dynar_free(&hosts);
168 /* Cleanup java storages */
169 xbt_dynar_t storages = MSG_storages_as_dynar();
170 if(!xbt_dynar_is_empty(storages)){
171 for (unsigned long index = 0; index < xbt_dynar_length(storages) - 1; index++) {
172 jobject jstorage = (jobject) xbt_lib_get_level(xbt_dynar_get_as(storages,index,msg_storage_t), JAVA_STORAGE_LEVEL);
174 jstorage_unref(env, jstorage);
177 xbt_dynar_free(&storages);
181 JNIEXPORT void JNICALL
182 Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls,
183 jstring jplatformFile)
186 const char *platformFile =
187 env->GetStringUTFChars(jplatformFile, 0);
189 MSG_create_environment(platformFile);
191 env->ReleaseStringUTFChars(jplatformFile, platformFile);
194 JNIEXPORT jobject JNICALL
195 Java_org_simgrid_msg_Msg_environmentGetRoutingRoot(JNIEnv * env, jclass cls)
197 msg_as_t as = MSG_environment_get_routing_root();
198 jobject jas = jas_new_instance(env);
200 jxbt_throw_jni(env, "java As instantiation failed");
203 jas = jas_ref(env, jas);
205 jxbt_throw_jni(env, "new global ref allocation failed");
208 jas_bind(jas, as, env);
210 return (jobject) jas;
213 JNIEXPORT void JNICALL
214 Java_org_simgrid_msg_Msg_debug(JNIEnv * env, jclass cls, jstring js)
216 const char *s = env->GetStringUTFChars(js, 0);
218 env->ReleaseStringUTFChars(js, s);
220 JNIEXPORT void JNICALL
221 Java_org_simgrid_msg_Msg_verb(JNIEnv * env, jclass cls, jstring js)
223 const char *s = env->GetStringUTFChars(js, 0);
225 env->ReleaseStringUTFChars(js, s);
227 JNIEXPORT void JNICALL
228 Java_org_simgrid_msg_Msg_info(JNIEnv * env, jclass cls, jstring js)
230 const char *s = env->GetStringUTFChars(js, 0);
232 env->ReleaseStringUTFChars(js, s);
234 JNIEXPORT void JNICALL
235 Java_org_simgrid_msg_Msg_warn(JNIEnv * env, jclass cls, jstring js)
237 const char *s = env->GetStringUTFChars(js, 0);
239 env->ReleaseStringUTFChars(js, s);
241 JNIEXPORT void JNICALL
242 Java_org_simgrid_msg_Msg_error(JNIEnv * env, jclass cls, jstring js)
244 const char *s = env->GetStringUTFChars(js, 0);
246 env->ReleaseStringUTFChars(js, s);
248 JNIEXPORT void JNICALL
249 Java_org_simgrid_msg_Msg_critical(JNIEnv * env, jclass cls, jstring js)
251 const char *s = env->GetStringUTFChars(js, 0);
252 XBT_CRITICAL("%s", s);
253 env->ReleaseStringUTFChars(js, s);
256 static int java_main(int argc, char *argv[]);
258 JNIEXPORT void JNICALL
259 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls,
260 jstring jdeploymentFile)
263 const char *deploymentFile =
264 env->GetStringUTFChars(jdeploymentFile, 0);
266 SIMIX_function_register_default(java_main);
267 MSG_launch_application(deploymentFile);
272 /** Run a Java org.simgrid.msg.Process
274 * If needed, this waits for the process starting time.
275 * Then it calls the Process.run() method.
277 static void run_jprocess(JNIEnv *env, jobject jprocess)
279 xbt_assert(jprocess != nullptr, "Process not created...");
280 //wait for the process to be able to begin
282 jfieldID jprocess_field_Process_startTime = jxbt_get_sfield(env, "org/simgrid/msg/Process", "startTime", "D");
283 jdouble startTime = env->GetDoubleField(jprocess, jprocess_field_Process_startTime);
284 if (startTime > MSG_get_clock())
285 MSG_process_sleep(startTime - MSG_get_clock());
286 //Execution of the "run" method.
287 jmethodID id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "run", "()V");
288 xbt_assert( (id != nullptr), "Method not found...");
289 env->CallVoidMethod(jprocess, id);
292 /** Create a Java org.simgrid.msg.Process with the arguments and run it */
293 static int java_main(int argc, char *argv[])
295 JNIEnv *env = get_current_thread_env();
296 simgrid::java::JavaContext* context =
297 (simgrid::java::JavaContext*) SIMIX_context_self();
299 //Change the "." in class name for "/".
300 xbt_str_subst(argv[0],'.','/',0);
301 jclass class_Process = env->FindClass(argv[0]);
302 xbt_str_subst(argv[0],'/','.',0);
303 //Retrieve the methodID for the constructor
304 xbt_assert((class_Process != NULL), "Class not found (%s). The deployment file must use the fully qualified class name, including the package. The case is important.", argv[0]);
305 jmethodID constructor_Process = env->GetMethodID(class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
306 xbt_assert((constructor_Process != NULL), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
308 //Retrieve the name of the process.
309 jstring jname = env->NewStringUTF(argv[0]);
310 //Build the arguments
311 jobjectArray args = (jobjectArray)env->NewObjectArray(argc - 1,
312 env->FindClass("java/lang/String"),
313 env->NewStringUTF(""));
315 for (i = 1; i < argc; i++)
316 env->SetObjectArrayElement(args,i - 1,
317 env->NewStringUTF(argv[i]));
318 //Retrieve the host for the process.
319 jstring jhostName = env->NewStringUTF(MSG_host_get_name(MSG_host_self()));
320 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, NULL, jhostName);
321 //creates the process
322 jobject jprocess = env->NewObject(class_Process, constructor_Process, jhost, jname, args);
323 xbt_assert((jprocess != NULL), "Process allocation failed.");
324 jprocess = env->NewGlobalRef(jprocess);
325 //bind the process to the context
326 msg_process_t process = MSG_process_self();
328 context->jprocess = jprocess;
329 /* sets the PID and the PPID of the process */
330 env->SetIntField(jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
331 env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
332 jprocess_bind(jprocess, process, env);
334 run_jprocess(env, context->jprocess);
341 /** Run the Java org.simgrid.msg.Process */
342 void java_main_jprocess(jobject jprocess)
344 JNIEnv *env = get_current_thread_env();
345 simgrid::java::JavaContext* context =
346 (simgrid::java::JavaContext*) SIMIX_context_self();
347 context->jprocess = jprocess;
348 smx_process_t process = SIMIX_process_self();
349 jprocess_bind(context->jprocess, process, env);
351 // Adrien, ugly path, just to bypass creation of context at low levels
352 // (i.e such as for the VM migration for instance)
353 if (context->jprocess == nullptr)
356 run_jprocess(env, context->jprocess);