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>
12 #include <src/simix/smx_private.h>
14 #include "jmsg_process.h"
18 #include "jmsg_host.h"
19 #include "jmsg_storage.h"
20 #include "jmsg_task.h"
21 #include "jxbt_utilities.h"
25 #include "JavaContext.hpp"
27 /* Shut up some errors in eclipse online compiler. I wish such a pimple wouldn't be needed */
34 /* end of eclipse-mandated pimple */
39 int JAVA_STORAGE_LEVEL;
41 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
43 JavaVM *__java_vm = NULL;
45 JavaVM *get_java_VM(void)
50 JNIEnv *get_current_thread_env(void)
54 __java_vm->AttachCurrentThread((void **) &env, NULL);
58 void jmsg_throw_status(JNIEnv *env, msg_error_t status) {
61 jxbt_throw_time_out_failure(env,NULL);
63 case MSG_TRANSFER_FAILURE:
64 jxbt_throw_transfer_failure(env,NULL);
66 case MSG_HOST_FAILURE:
67 jxbt_throw_host_failure(env,NULL);
69 case MSG_TASK_CANCELED:
70 jxbt_throw_task_cancelled(env,NULL);
73 jxbt_throw_native(env,xbt_strdup("undefined message failed "
74 "(please see jmsg_throw_status function in jmsg.cpp)"));
79 /***************************************************************************************
80 * Unsortable functions *
81 ***************************************************************************************/
83 JNIEXPORT jdouble JNICALL
84 Java_org_simgrid_msg_Msg_getClock(JNIEnv * env, jclass cls)
86 return (jdouble) MSG_get_clock();
89 static void __JAVA_host_priv_free(void *host)
93 static void __JAVA_storage_priv_free(void *storage)
97 JNIEXPORT void JNICALL
98 Java_org_simgrid_msg_Msg_init(JNIEnv * env, jclass cls, jobjectArray jargs)
106 XBT_LOG_CONNECT(jmsg);
107 XBT_LOG_CONNECT(jtrace);
109 env->GetJavaVM(&__java_vm);
111 simgrid::simix::factory_initializer = simgrid::java::java_factory;
112 jthrowable exc = env->ExceptionOccurred();
114 env->ExceptionClear();
117 setlocale(LC_NUMERIC,"C");
120 argc = (int) env->GetArrayLength(jargs);
123 argv = xbt_new(char *, argc + 1);
124 argv[0] = xbt_strdup("java");
126 for (index = 0; index < argc - 1; index++) {
127 jval = (jstring) env->GetObjectArrayElement(jargs, index);
128 tmp = env->GetStringUTFChars(jval, 0);
129 argv[index + 1] = xbt_strdup(tmp);
130 env->ReleaseStringUTFChars(jval, tmp);
134 MSG_init(&argc, argv);
136 JAVA_HOST_LEVEL = simgrid::s4u::Host::extension_create(__JAVA_host_priv_free);
137 JAVA_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, __JAVA_storage_priv_free);
139 for (index = 0; index < argc; index++)
145 JNIEXPORT void JNICALL
146 JNICALL Java_org_simgrid_msg_Msg_run(JNIEnv * env, jclass cls)
149 XBT_DEBUG("Ready to run MSG_MAIN");
150 msg_error_t rv = MSG_main();
151 XBT_DEBUG("Done running MSG_MAIN");
152 jxbt_check_res("MSG_main()", rv, MSG_OK,
153 xbt_strdup("unexpected error : MSG_main() failed .. please report this bug "));
155 XBT_INFO("MSG_main finished; Cleaning up the simulation...");
156 /* Cleanup java hosts */
157 xbt_dynar_t hosts = MSG_hosts_as_dynar();
158 for (unsigned long index = 0; index < xbt_dynar_length(hosts) - 1; index++) {
159 msg_host_t msg_host = xbt_dynar_get_as(hosts,index,msg_host_t);
160 jobject jhost = (jobject) msg_host->extension(JAVA_HOST_LEVEL);
162 jhost_unref(env, jhost);
165 xbt_dynar_free(&hosts);
167 /* Cleanup java storages */
168 xbt_dynar_t storages = MSG_storages_as_dynar();
169 if(!xbt_dynar_is_empty(storages)){
170 for (unsigned long index = 0; index < xbt_dynar_length(storages) - 1; index++) {
171 jobject jstorage = (jobject) xbt_lib_get_level(xbt_dynar_get_as(storages,index,msg_storage_t), JAVA_STORAGE_LEVEL);
173 jstorage_unref(env, jstorage);
176 xbt_dynar_free(&storages);
180 JNIEXPORT void JNICALL
181 Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls,
182 jstring jplatformFile)
185 const char *platformFile =
186 env->GetStringUTFChars(jplatformFile, 0);
188 MSG_create_environment(platformFile);
190 env->ReleaseStringUTFChars(jplatformFile, platformFile);
193 JNIEXPORT jobject JNICALL
194 Java_org_simgrid_msg_Msg_environmentGetRoutingRoot(JNIEnv * env, jclass cls)
196 msg_as_t as = MSG_environment_get_routing_root();
197 jobject jas = jas_new_instance(env);
199 jxbt_throw_jni(env, "java As instantiation failed");
202 jas = jas_ref(env, jas);
204 jxbt_throw_jni(env, "new global ref allocation failed");
207 jas_bind(jas, as, env);
209 return (jobject) jas;
212 JNIEXPORT void JNICALL
213 Java_org_simgrid_msg_Msg_debug(JNIEnv * env, jclass cls, jstring js)
215 const char *s = env->GetStringUTFChars(js, 0);
217 env->ReleaseStringUTFChars(js, s);
219 JNIEXPORT void JNICALL
220 Java_org_simgrid_msg_Msg_verb(JNIEnv * env, jclass cls, jstring js)
222 const char *s = env->GetStringUTFChars(js, 0);
224 env->ReleaseStringUTFChars(js, s);
226 JNIEXPORT void JNICALL
227 Java_org_simgrid_msg_Msg_info(JNIEnv * env, jclass cls, jstring js)
229 const char *s = env->GetStringUTFChars(js, 0);
231 env->ReleaseStringUTFChars(js, s);
233 JNIEXPORT void JNICALL
234 Java_org_simgrid_msg_Msg_warn(JNIEnv * env, jclass cls, jstring js)
236 const char *s = env->GetStringUTFChars(js, 0);
238 env->ReleaseStringUTFChars(js, s);
240 JNIEXPORT void JNICALL
241 Java_org_simgrid_msg_Msg_error(JNIEnv * env, jclass cls, jstring js)
243 const char *s = env->GetStringUTFChars(js, 0);
245 env->ReleaseStringUTFChars(js, s);
247 JNIEXPORT void JNICALL
248 Java_org_simgrid_msg_Msg_critical(JNIEnv * env, jclass cls, jstring js)
250 const char *s = env->GetStringUTFChars(js, 0);
251 XBT_CRITICAL("%s", s);
252 env->ReleaseStringUTFChars(js, s);
255 static int java_main(int argc, char *argv[]);
257 JNIEXPORT void JNICALL
258 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls,
259 jstring jdeploymentFile)
262 const char *deploymentFile =
263 env->GetStringUTFChars(jdeploymentFile, 0);
265 SIMIX_function_register_default(java_main);
266 MSG_launch_application(deploymentFile);
271 /** Run a Java org.simgrid.msg.Process
273 * If needed, this waits for the process starting time.
274 * Then it calls the Process.run() method.
276 static void run_jprocess(JNIEnv *env, jobject jprocess)
278 xbt_assert(jprocess != nullptr, "Process not created...");
279 //wait for the process to be able to begin
281 jfieldID jprocess_field_Process_startTime = jxbt_get_sfield(env, "org/simgrid/msg/Process", "startTime", "D");
282 jdouble startTime = env->GetDoubleField(jprocess, jprocess_field_Process_startTime);
283 if (startTime > MSG_get_clock())
284 MSG_process_sleep(startTime - MSG_get_clock());
285 //Execution of the "run" method.
286 jmethodID id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "run", "()V");
287 xbt_assert( (id != nullptr), "Method not found...");
288 env->CallVoidMethod(jprocess, id);
291 /** Create a Java org.simgrid.msg.Process with the arguments and run it */
292 static int java_main(int argc, char *argv[])
294 JNIEnv *env = get_current_thread_env();
295 simgrid::java::JavaContext* context =
296 (simgrid::java::JavaContext*) SIMIX_context_self();
298 //Change the "." in class name for "/".
299 xbt_str_subst(argv[0],'.','/',0);
300 jclass class_Process = env->FindClass(argv[0]);
301 xbt_str_subst(argv[0],'/','.',0);
302 //Retrieve the methodID for the constructor
303 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]);
304 jmethodID constructor_Process = env->GetMethodID(class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
305 xbt_assert((constructor_Process != NULL), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
307 //Retrieve the name of the process.
308 jstring jname = env->NewStringUTF(argv[0]);
309 //Build the arguments
310 jobjectArray args = (jobjectArray)env->NewObjectArray(argc - 1,
311 env->FindClass("java/lang/String"),
312 env->NewStringUTF(""));
314 for (i = 1; i < argc; i++)
315 env->SetObjectArrayElement(args,i - 1,
316 env->NewStringUTF(argv[i]));
317 //Retrieve the host for the process.
318 jstring jhostName = env->NewStringUTF(MSG_host_get_name(MSG_host_self()));
319 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, NULL, jhostName);
320 //creates the process
321 jobject jprocess = env->NewObject(class_Process, constructor_Process, jhost, jname, args);
322 xbt_assert((jprocess != NULL), "Process allocation failed.");
323 jprocess = env->NewGlobalRef(jprocess);
324 //bind the process to the context
325 msg_process_t process = MSG_process_self();
327 context->jprocess = jprocess;
328 /* sets the PID and the PPID of the process */
329 env->SetIntField(jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
330 env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
331 jprocess_bind(jprocess, process, env);
333 run_jprocess(env, context->jprocess);
340 /** Run the Java org.simgrid.msg.Process */
341 void java_main_jprocess(jobject jprocess)
343 JNIEnv *env = get_current_thread_env();
344 simgrid::java::JavaContext* context =
345 (simgrid::java::JavaContext*) SIMIX_context_self();
346 context->jprocess = jprocess;
347 smx_process_t process = SIMIX_process_self();
348 jprocess_bind(context->jprocess, process, env);
350 // Adrien, ugly path, just to bypass creation of context at low levels
351 // (i.e such as for the VM migration for instance)
352 if (context->jprocess == nullptr)
355 run_jprocess(env, context->jprocess);
363 #include "simgrid/plugins/energy.h"
364 JNIEXPORT void JNICALL
365 Java_org_simgrid_msg_Msg_energyInit(void) {
366 sg_energy_plugin_init();