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. */
11 #include <simgrid/msg.h>
12 #include <simgrid/simix.h>
13 #include <simgrid/plugins/energy.h>
15 #include <simgrid/s4u/host.hpp>
17 #include <src/simix/smx_private.h>
19 #include "jmsg_process.h"
21 #include "jmsg_host.h"
22 #include "jmsg_storage.h"
23 #include "jmsg_task.h"
24 #include "jxbt_utilities.h"
27 #include "JavaContext.hpp"
31 /* Shut up some errors in eclipse online compiler. I wish such a pimple wouldn't be needed */
38 /* end of eclipse-mandated pimple */
42 int JAVA_HOST_LEVEL = -1;
43 int JAVA_STORAGE_LEVEL = -1;
45 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
47 JavaVM *__java_vm = nullptr;
54 JNIEnv *get_current_thread_env()
58 __java_vm->AttachCurrentThread((void **) &env, nullptr);
62 void jmsg_throw_status(JNIEnv *env, msg_error_t status) {
65 jxbt_throw_time_out_failure(env,nullptr);
67 case MSG_TRANSFER_FAILURE:
68 jxbt_throw_transfer_failure(env,nullptr);
70 case MSG_HOST_FAILURE:
71 jxbt_throw_host_failure(env,nullptr);
73 case MSG_TASK_CANCELED:
74 jxbt_throw_task_cancelled(env,nullptr);
77 jxbt_throw_native(env,xbt_strdup("undefined message failed "
78 "(please see jmsg_throw_status function in jmsg.cpp)"));
82 /***************************************************************************************
83 * Unsortable functions *
84 ***************************************************************************************/
86 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_Msg_getClock(JNIEnv * env, jclass cls)
88 return (jdouble) MSG_get_clock();
91 static void __JAVA_host_priv_free(void *host)
95 static void __JAVA_storage_priv_free(void *storage)
99 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_init(JNIEnv * env, jclass cls, jobjectArray jargs)
101 char **argv = nullptr;
107 XBT_LOG_CONNECT(jmsg);
108 XBT_LOG_CONNECT(jtrace);
110 env->GetJavaVM(&__java_vm);
112 simgrid::kernel::context::factory_initializer = &simgrid::kernel::context::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);
133 argv[argc] = nullptr;
135 MSG_init(&argc, argv);
137 JAVA_HOST_LEVEL = simgrid::s4u::Host::extension_create(__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 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);
179 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls, jstring jplatformFile)
181 const char *platformFile = env->GetStringUTFChars(jplatformFile, 0);
183 MSG_create_environment(platformFile);
185 env->ReleaseStringUTFChars(jplatformFile, platformFile);
188 JNIEXPORT jobject JNICALL Java_org_simgrid_msg_Msg_environmentGetRoutingRoot(JNIEnv * env, jclass cls)
190 msg_netzone_t as = MSG_environment_get_routing_root();
191 jobject jas = jas_new_instance(env);
193 jxbt_throw_jni(env, "java As instantiation failed");
196 jas = jas_ref(env, jas);
198 jxbt_throw_jni(env, "new global ref allocation failed");
201 jas_bind(jas, as, env);
203 return (jobject) jas;
206 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_debug(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_verb(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_info(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_warn(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_error(JNIEnv * env, jclass cls, jstring js)
236 const char *s = env->GetStringUTFChars(js, 0);
238 env->ReleaseStringUTFChars(js, s);
241 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_critical(JNIEnv * env, jclass cls, jstring js)
243 const char *s = env->GetStringUTFChars(js, 0);
244 XBT_CRITICAL("%s", s);
245 env->ReleaseStringUTFChars(js, s);
248 static int java_main(int argc, char *argv[]);
250 JNIEXPORT void JNICALL
251 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls, jstring jdeploymentFile)
253 const char *deploymentFile = env->GetStringUTFChars(jdeploymentFile, 0);
255 SIMIX_function_register_default(java_main);
256 MSG_launch_application(deploymentFile);
261 JNIEXPORT void JNICALL Java_org_simgrid_msg_Msg_energyInit() {
262 sg_energy_plugin_init();
265 /** Run a Java org.simgrid.msg.Process
267 * If needed, this waits for the process starting time.
268 * Then it calls the Process.run() method.
270 static void run_jprocess(JNIEnv *env, jobject jprocess)
272 // wait for the process's start time
273 jfieldID jprocess_field_Process_startTime = jxbt_get_sfield(env, "org/simgrid/msg/Process", "startTime", "D");
274 jdouble startTime = env->GetDoubleField(jprocess, jprocess_field_Process_startTime);
275 if (startTime > MSG_get_clock())
276 MSG_process_sleep(startTime - MSG_get_clock());
277 //Execution of the "run" method.
278 jmethodID id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "run", "()V");
279 xbt_assert((id != nullptr), "Method run() not found...");
280 env->CallVoidMethod(jprocess, id);
283 /** Create a Java org.simgrid.msg.Process with the arguments and run it */
284 static int java_main(int argc, char *argv[])
286 JNIEnv *env = get_current_thread_env();
287 simgrid::kernel::context::JavaContext* context = static_cast<simgrid::kernel::context::JavaContext*>(SIMIX_context_self());
289 //Change the "." in class name for "/".
290 xbt_str_subst(argv[0],'.','/',0);
291 jclass class_Process = env->FindClass(argv[0]);
292 xbt_str_subst(argv[0],'/','.',0);
293 //Retrieve the methodID for the constructor
294 xbt_assert((class_Process != nullptr), "Class not found (%s). The deployment file must use the fully qualified class name, including the package. The case is important.", argv[0]);
295 jmethodID constructor_Process = env->GetMethodID(class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
296 xbt_assert((constructor_Process != nullptr), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
298 //Retrieve the name of the process.
299 jstring jname = env->NewStringUTF(argv[0]);
300 //Build the arguments
301 jobjectArray args = static_cast<jobjectArray>(env->NewObjectArray(argc - 1, env->FindClass("java/lang/String"),
302 env->NewStringUTF("")));
303 for (int i = 1; i < argc; i++)
304 env->SetObjectArrayElement(args,i - 1, env->NewStringUTF(argv[i]));
305 //Retrieve the host for the process.
306 jstring jhostName = env->NewStringUTF(MSG_host_self()->cname());
307 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, nullptr, jhostName);
308 //creates the process
309 jobject jprocess = env->NewObject(class_Process, constructor_Process, jhost, jname, args);
310 xbt_assert((jprocess != nullptr), "Process allocation failed.");
311 jprocess = env->NewGlobalRef(jprocess);
312 //bind the process to the context
313 msg_process_t process = MSG_process_self();
315 context->jprocess = jprocess;
316 /* sets the PID and the PPID of the process */
317 env->SetIntField(jprocess, jprocess_field_Process_pid, static_cast<jint>(MSG_process_get_PID(process)));
318 env->SetIntField(jprocess, jprocess_field_Process_ppid, static_cast<jint>(MSG_process_get_PPID(process)));
319 jprocess_bind(jprocess, process, env);
321 run_jprocess(env, context->jprocess);
329 /** Run the Java org.simgrid.msg.Process */
330 void java_main_jprocess(jobject jprocess)
332 JNIEnv *env = get_current_thread_env();
333 simgrid::kernel::context::JavaContext* context = static_cast<simgrid::kernel::context::JavaContext*>(SIMIX_context_self());
334 context->jprocess = jprocess;
335 smx_actor_t process = SIMIX_process_self();
336 jprocess_bind(context->jprocess, process, env);
338 // Adrien, ugly path, just to bypass creation of context at low levels (i.e such as for the VM migration for instance)
339 if (context->jprocess != nullptr)
340 run_jprocess(env, context->jprocess);