1 /* Java Wrappers to the MSG API. */
3 /* Copyright (c) 2007-2012. 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. */
10 #include <simgrid/simix.h>
11 #include <surf/surfxml_parse.h>
14 #include "smx_context_java.h"
15 #include "smx_context_cojava.h"
17 #include "jmsg_process.h"
19 #include "jmsg_host.h"
20 #include "jmsg_task.h"
21 #include "jxbt_utilities.h"
25 /* Shut up some errors in eclipse online compiler. I wish such a pimple wouldn't be needed */
32 /* end of eclipse-mandated pimple */
34 static int create_jprocess(int argc, char *argv[]);
36 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
38 JavaVM *__java_vm = NULL;
40 JavaVM *get_java_VM(void)
45 JNIEnv *get_current_thread_env(void)
49 (*__java_vm)->AttachCurrentThread(__java_vm, (void **) &env, NULL);
53 void jmsg_throw_status(JNIEnv *env, msg_error_t status) {
56 jxbt_throw_time_out_failure(env,NULL);
58 case MSG_TRANSFER_FAILURE:
59 jxbt_throw_transfer_failure(env,NULL);
61 case MSG_HOST_FAILURE:
62 jxbt_throw_host_failure(env,NULL);
65 jxbt_throw_native(env,bprintf("communication failed"));
70 /***************************************************************************************
71 * Unsortable functions *
72 ***************************************************************************************/
74 JNIEXPORT jdouble JNICALL
75 Java_org_simgrid_msg_Msg_getClock(JNIEnv * env, jclass cls)
77 return (jdouble) MSG_get_clock();
80 JNIEXPORT void JNICALL
81 Java_org_simgrid_msg_Msg_init(JNIEnv * env, jclass cls, jobjectArray jargs)
89 XBT_LOG_CONNECT(jmsg);
91 XBT_LOG_CONNECT(jtrace);
94 (*env)->GetJavaVM(env, &__java_vm);
96 if ((*env)->FindClass(env, "java/dyn/Coroutine")) {
97 XBT_INFO("Using Coroutines. Your simulation is on steroid.");
98 smx_factory_initializer_to_use = SIMIX_ctx_cojava_factory_init;
101 XBT_INFO("Using regular java threads. Coroutines could speed your simulation up.");
102 smx_factory_initializer_to_use = SIMIX_ctx_java_factory_init;
104 jthrowable exc = (*env)->ExceptionOccurred(env);
106 (*env)->ExceptionClear(env);
109 setlocale(LC_NUMERIC,"C");
112 argc = (int) (*env)->GetArrayLength(env, jargs);
115 argv = xbt_new(char *, argc + 1);
116 argv[0] = strdup("java");
118 for (index = 0; index < argc - 1; index++) {
119 jval = (jstring) (*env)->GetObjectArrayElement(env, jargs, index);
120 tmp = (*env)->GetStringUTFChars(env, jval, 0);
121 argv[index + 1] = strdup(tmp);
122 (*env)->ReleaseStringUTFChars(env, jval, tmp);
126 MSG_init(&argc, argv);
128 for (index = 0; index < argc; index++)
134 JNIEXPORT void JNICALL
135 JNICALL Java_org_simgrid_msg_Msg_run(JNIEnv * env, jclass cls)
143 XBT_DEBUG("Ready to run MSG_MAIN");
145 XBT_DEBUG("Done running MSG_MAIN");
146 jxbt_check_res("MSG_main()", rv, MSG_OK,
148 ("unexpected error : MSG_main() failed .. please report this bug "));
150 XBT_INFO("MSG_main finished; Cleaning up the simulation...");
151 /* Cleanup java hosts */
152 hosts = MSG_hosts_as_dynar();
153 for (index = 0; index < xbt_dynar_length(hosts) - 1; index++) {
154 jhost = (jobject) MSG_host_get_data(xbt_dynar_get_as(hosts,index,msg_host_t));
156 jhost_unref(env, jhost);
159 xbt_dynar_free(&hosts);
162 JNIEXPORT void JNICALL
163 Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls,
164 jstring jplatformFile)
167 const char *platformFile =
168 (*env)->GetStringUTFChars(env, jplatformFile, 0);
170 MSG_create_environment(platformFile);
172 (*env)->ReleaseStringUTFChars(env, jplatformFile, platformFile);
174 JNIEXPORT void JNICALL
175 Java_org_simgrid_msg_Msg_debug(JNIEnv * env, jclass cls, jstring js)
177 const char *s = (*env)->GetStringUTFChars(env, js, 0);
179 (*env)->ReleaseStringUTFChars(env, js, s);
181 JNIEXPORT void JNICALL
182 Java_org_simgrid_msg_Msg_verb(JNIEnv * env, jclass cls, jstring js)
184 const char *s = (*env)->GetStringUTFChars(env, js, 0);
186 (*env)->ReleaseStringUTFChars(env, js, s);
188 JNIEXPORT void JNICALL
189 Java_org_simgrid_msg_Msg_info(JNIEnv * env, jclass cls, jstring js)
191 const char *s = (*env)->GetStringUTFChars(env, js, 0);
193 (*env)->ReleaseStringUTFChars(env, js, s);
195 JNIEXPORT void JNICALL
196 Java_org_simgrid_msg_Msg_warn(JNIEnv * env, jclass cls, jstring js)
198 const char *s = (*env)->GetStringUTFChars(env, js, 0);
200 (*env)->ReleaseStringUTFChars(env, js, s);
202 JNIEXPORT void JNICALL
203 Java_org_simgrid_msg_Msg_error(JNIEnv * env, jclass cls, jstring js)
205 const char *s = (*env)->GetStringUTFChars(env, js, 0);
207 (*env)->ReleaseStringUTFChars(env, js, s);
209 JNIEXPORT void JNICALL
210 Java_org_simgrid_msg_Msg_critical(JNIEnv * env, jclass cls, jstring js)
212 const char *s = (*env)->GetStringUTFChars(env, js, 0);
213 XBT_CRITICAL("%s", s);
214 (*env)->ReleaseStringUTFChars(env, js, s);
216 JNIEXPORT void JNICALL
217 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls,
218 jstring jdeploymentFile)
221 const char *deploymentFile =
222 (*env)->GetStringUTFChars(env, jdeploymentFile, 0);
224 SIMIX_function_register_default(create_jprocess);
225 MSG_launch_application(deploymentFile);
228 * Function called when there is the need to create the java Process object
229 * (when we are using deployement files).
230 * it HAS to be executed on the process context, else really bad things will happen.
232 static int create_jprocess(int argc, char *argv[]) {
233 JNIEnv *env = get_current_thread_env();
234 //Change the "." in class name for "/".
235 xbt_str_subst(argv[0],'.','/',0);
236 jclass class_Process = (*env)->FindClass(env, argv[0]);
237 xbt_str_subst(argv[0],'/','.',0);
238 //Retrieve the methodID for the constructor
239 xbt_assert((class_Process != NULL), "Class not found.");
240 jmethodID constructor_Process = (*env)->GetMethodID(env, class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
241 xbt_assert((constructor_Process != NULL), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
243 //Retrieve the name of the process.
244 jstring jname = (*env)->NewStringUTF(env, argv[0]);
245 //Build the arguments
246 jobjectArray args = (jobjectArray)((*env)->NewObjectArray(env,argc - 1,
247 (*env)->FindClass(env,"java/lang/String"),
248 (*env)->NewStringUTF(env,"")));
250 for (i = 1; i < argc; i++)
251 (*env)->SetObjectArrayElement(env,args,i - 1,(*env)->NewStringUTF(env, argv[i]));
252 //Retrieve the host for the process.
253 jstring jhostName = (*env)->NewStringUTF(env, MSG_host_get_name(MSG_host_self()));
254 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, NULL, jhostName);
255 //creates the process
256 jobject jprocess = (*env)->NewObject(env, class_Process, constructor_Process, jhost, jname, args);
257 xbt_assert((jprocess != NULL), "Process allocation failed.");
258 jprocess = (*env)->NewGlobalRef(env, jprocess);
259 //bind the process to the context
260 msg_process_t process = MSG_process_self();
261 smx_ctx_java_t context = (smx_ctx_java_t)MSG_process_get_smx_ctx(process);
262 context->jprocess = jprocess;
263 /* sets the PID and the PPID of the process */
264 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
265 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
266 jprocess_bind(jprocess, process, env);