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"
16 #include "jmsg_host.h"
17 #include "jmsg_storage.h"
18 #include "jmsg_task.h"
19 #include "jxbt_utilities.h"
22 #include "JavaContext.hpp"
24 /* Shut up some errors in eclipse online compiler. I wish such a pimple wouldn't be needed */
31 /* end of eclipse-mandated pimple */
35 int JAVA_HOST_LEVEL = -1;
36 int JAVA_STORAGE_LEVEL = -1;
38 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
40 JavaVM *__java_vm = NULL;
42 JavaVM *get_java_VM(void)
47 JNIEnv *get_current_thread_env(void)
51 __java_vm->AttachCurrentThread((void **) &env, NULL);
55 void jmsg_throw_status(JNIEnv *env, msg_error_t status) {
58 jxbt_throw_time_out_failure(env,NULL);
60 case MSG_TRANSFER_FAILURE:
61 jxbt_throw_transfer_failure(env,NULL);
63 case MSG_HOST_FAILURE:
64 jxbt_throw_host_failure(env,NULL);
66 case MSG_TASK_CANCELED:
67 jxbt_throw_task_cancelled(env,NULL);
70 jxbt_throw_native(env,xbt_strdup("undefined message failed "
71 "(please see jmsg_throw_status function in jmsg.cpp)"));
75 /***************************************************************************************
76 * Unsortable functions *
77 ***************************************************************************************/
79 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Msg_getClock(JNIEnv * env, jclass cls)
81 return (jdouble) MSG_get_clock();
84 static void __JAVA_host_priv_free(void *host)
88 static void __JAVA_storage_priv_free(void *storage)
92 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_init(JNIEnv * env, jclass cls, jobjectArray jargs)
100 XBT_LOG_CONNECT(jmsg);
101 XBT_LOG_CONNECT(jtrace);
103 env->GetJavaVM(&__java_vm);
105 simgrid::simix::factory_initializer = simgrid::java::java_factory;
106 jthrowable exc = env->ExceptionOccurred();
108 env->ExceptionClear();
111 setlocale(LC_NUMERIC,"C");
114 argc = (int) env->GetArrayLength(jargs);
117 argv = xbt_new(char *, argc + 1);
118 argv[0] = xbt_strdup("java");
120 for (index = 0; index < argc - 1; index++) {
121 jval = (jstring) env->GetObjectArrayElement(jargs, index);
122 tmp = env->GetStringUTFChars(jval, 0);
123 argv[index + 1] = xbt_strdup(tmp);
124 env->ReleaseStringUTFChars(jval, tmp);
128 MSG_init(&argc, argv);
130 JAVA_HOST_LEVEL = simgrid::s4u::Host::extension_create(__JAVA_host_priv_free);
131 JAVA_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, __JAVA_storage_priv_free);
133 for (index = 0; index < argc; index++)
139 JNIEXPORT void JNICALL JNICALL Java_org_simgrid_msg_Msg_run(JNIEnv * env, jclass cls)
142 XBT_DEBUG("Ready to run MSG_MAIN");
143 msg_error_t rv = MSG_main();
144 XBT_DEBUG("Done running MSG_MAIN");
145 jxbt_check_res("MSG_main()", rv, MSG_OK,
146 xbt_strdup("unexpected error : MSG_main() failed .. please report this bug "));
148 XBT_INFO("MSG_main finished; Cleaning up the simulation...");
149 /* Cleanup java hosts */
150 xbt_dynar_t hosts = MSG_hosts_as_dynar();
151 for (unsigned long index = 0; index < xbt_dynar_length(hosts) - 1; index++) {
152 msg_host_t msg_host = xbt_dynar_get_as(hosts,index,msg_host_t);
153 jobject jhost = (jobject) msg_host->extension(JAVA_HOST_LEVEL);
155 jhost_unref(env, jhost);
158 xbt_dynar_free(&hosts);
160 /* Cleanup java storages */
161 xbt_dynar_t storages = MSG_storages_as_dynar();
162 if(!xbt_dynar_is_empty(storages)){
163 for (unsigned long index = 0; index < xbt_dynar_length(storages) - 1; index++) {
164 jobject jstorage = (jobject) xbt_lib_get_level(xbt_dynar_get_as(storages,index,msg_storage_t), JAVA_STORAGE_LEVEL);
166 jstorage_unref(env, jstorage);
169 xbt_dynar_free(&storages);
172 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls, jstring jplatformFile)
174 const char *platformFile = env->GetStringUTFChars(jplatformFile, 0);
176 MSG_create_environment(platformFile);
178 env->ReleaseStringUTFChars(jplatformFile, platformFile);
181 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Msg_environmentGetRoutingRoot(JNIEnv * env, jclass cls)
183 msg_as_t as = MSG_environment_get_routing_root();
184 jobject jas = jas_new_instance(env);
186 jxbt_throw_jni(env, "java As instantiation failed");
189 jas = jas_ref(env, jas);
191 jxbt_throw_jni(env, "new global ref allocation failed");
194 jas_bind(jas, as, env);
196 return (jobject) jas;
199 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_debug(JNIEnv * env, jclass cls, jstring js)
201 const char *s = env->GetStringUTFChars(js, 0);
203 env->ReleaseStringUTFChars(js, s);
206 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_verb(JNIEnv * env, jclass cls, jstring js)
208 const char *s = env->GetStringUTFChars(js, 0);
210 env->ReleaseStringUTFChars(js, s);
213 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_info(JNIEnv * env, jclass cls, jstring js)
215 const char *s = env->GetStringUTFChars(js, 0);
217 env->ReleaseStringUTFChars(js, s);
220 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_warn(JNIEnv * env, jclass cls, jstring js)
222 const char *s = env->GetStringUTFChars(js, 0);
224 env->ReleaseStringUTFChars(js, s);
227 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_error(JNIEnv * env, jclass cls, jstring js)
229 const char *s = env->GetStringUTFChars(js, 0);
231 env->ReleaseStringUTFChars(js, s);
234 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_critical(JNIEnv * env, jclass cls, jstring js)
236 const char *s = env->GetStringUTFChars(js, 0);
237 XBT_CRITICAL("%s", s);
238 env->ReleaseStringUTFChars(js, s);
241 static int java_main(int argc, char *argv[]);
243 JNIEXPORT void JNICALL
244 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls, jstring jdeploymentFile)
246 const char *deploymentFile = env->GetStringUTFChars(jdeploymentFile, 0);
248 SIMIX_function_register_default(java_main);
249 MSG_launch_application(deploymentFile);
254 /** Run a Java org.simgrid.msg.Process
256 * If needed, this waits for the process starting time.
257 * Then it calls the Process.run() method.
259 static void run_jprocess(JNIEnv *env, jobject jprocess)
261 xbt_assert(jprocess != nullptr, "Process not created...");
262 //wait for the process to be able to begin
264 jfieldID jprocess_field_Process_startTime = jxbt_get_sfield(env, "org/simgrid/msg/Process", "startTime", "D");
265 jdouble startTime = env->GetDoubleField(jprocess, jprocess_field_Process_startTime);
266 if (startTime > MSG_get_clock())
267 MSG_process_sleep(startTime - MSG_get_clock());
268 //Execution of the "run" method.
269 jmethodID id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "run", "()V");
270 xbt_assert( (id != nullptr), "Method not found...");
271 env->CallVoidMethod(jprocess, id);
274 /** Create a Java org.simgrid.msg.Process with the arguments and run it */
275 static int java_main(int argc, char *argv[])
277 JNIEnv *env = get_current_thread_env();
278 simgrid::java::JavaContext* context = (simgrid::java::JavaContext*) SIMIX_context_self();
280 //Change the "." in class name for "/".
281 xbt_str_subst(argv[0],'.','/',0);
282 jclass class_Process = env->FindClass(argv[0]);
283 xbt_str_subst(argv[0],'/','.',0);
284 //Retrieve the methodID for the constructor
285 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]);
286 jmethodID constructor_Process = env->GetMethodID(class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
287 xbt_assert((constructor_Process != NULL), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
289 //Retrieve the name of the process.
290 jstring jname = env->NewStringUTF(argv[0]);
291 //Build the arguments
292 jobjectArray args = (jobjectArray)env->NewObjectArray(argc - 1,
293 env->FindClass("java/lang/String"),
294 env->NewStringUTF(""));
296 for (i = 1; i < argc; i++)
297 env->SetObjectArrayElement(args,i - 1, env->NewStringUTF(argv[i]));
298 //Retrieve the host for the process.
299 jstring jhostName = env->NewStringUTF(MSG_host_get_name(MSG_host_self()));
300 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, NULL, jhostName);
301 //creates the process
302 jobject jprocess = env->NewObject(class_Process, constructor_Process, jhost, jname, args);
303 xbt_assert((jprocess != NULL), "Process allocation failed.");
304 jprocess = env->NewGlobalRef(jprocess);
305 //bind the process to the context
306 msg_process_t process = MSG_process_self();
308 context->jprocess = jprocess;
309 /* sets the PID and the PPID of the process */
310 env->SetIntField(jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
311 env->SetIntField(jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
312 jprocess_bind(jprocess, process, env);
314 run_jprocess(env, context->jprocess);
321 /** Run the Java org.simgrid.msg.Process */
322 void java_main_jprocess(jobject jprocess)
324 JNIEnv *env = get_current_thread_env();
325 simgrid::java::JavaContext* context = (simgrid::java::JavaContext*) SIMIX_context_self();
326 context->jprocess = jprocess;
327 smx_process_t process = SIMIX_process_self();
328 jprocess_bind(context->jprocess, process, env);
330 // Adrien, ugly path, just to bypass creation of context at low levels (i.e such as for the VM migration for instance)
331 if (context->jprocess == nullptr)
334 run_jprocess(env, context->jprocess);
340 #include "simgrid/plugins/energy.h"
341 JNIEXPORT void JNICALL
342 Java_org_simgrid_msg_Msg_energyInit(void) {
343 sg_energy_plugin_init();