1 /* Java Wrappers to the MSG API. */
3 /* Copyright (c) 2007, 2008, 2009, 2010. 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"
16 #include "jmsg_process.h"
18 #include "jmsg_host.h"
19 #include "jmsg_task.h"
20 #include "jxbt_utilities.h"
24 /* Shut up some errors in eclipse online compiler. I wish such a pimple wouldn't be needed */
31 /* end of eclipse-mandated pimple */
33 static int create_jprocess(int argc, char *argv[]);
35 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
37 JavaVM *__java_vm = NULL;
39 JavaVM *get_java_VM(void)
44 JNIEnv *get_current_thread_env(void)
48 (*__java_vm)->AttachCurrentThread(__java_vm, (void **) &env, NULL);
52 void jmsg_throw_status(JNIEnv *env, MSG_error_t status) {
55 jxbt_throw_time_out_failure(env,NULL);
57 case MSG_TRANSFER_FAILURE:
58 jxbt_throw_transfer_failure(env,NULL);
60 case MSG_HOST_FAILURE:
61 jxbt_throw_host_failure(env,NULL);
64 jxbt_throw_native(env,bprintf("communication failed"));
69 /***************************************************************************************
70 * Unsortable functions *
71 ***************************************************************************************/
73 JNIEXPORT jdouble JNICALL
74 Java_org_simgrid_msg_Msg_getClock(JNIEnv * env, jclass cls)
76 return (jdouble) MSG_get_clock();
79 JNIEXPORT void JNICALL
80 Java_org_simgrid_msg_Msg_init(JNIEnv * env, jclass cls, jobjectArray jargs)
88 (*env)->GetJavaVM(env, &__java_vm);
90 smx_factory_initializer_to_use = SIMIX_ctx_java_factory_init;
92 setlocale(LC_NUMERIC,"C");
95 argc = (int) (*env)->GetArrayLength(env, jargs);
98 argv = xbt_new(char *, argc + 1);
99 argv[0] = strdup("java");
101 for (index = 0; index < argc - 1; index++) {
102 jval = (jstring) (*env)->GetObjectArrayElement(env, jargs, index);
103 tmp = (*env)->GetStringUTFChars(env, jval, 0);
104 argv[index + 1] = strdup(tmp);
105 (*env)->ReleaseStringUTFChars(env, jval, tmp);
109 MSG_global_init(&argc, argv);
111 for (index = 0; index < argc; index++)
117 JNIEXPORT void JNICALL
118 JNICALL Java_org_simgrid_msg_Msg_run(JNIEnv * env, jclass cls)
126 XBT_INFO("Ready to run MSG_MAIN");
128 XBT_INFO("Done running MSG_MAIN");
129 jxbt_check_res("MSG_main()", rv, MSG_OK,
131 ("unexpected error : MSG_main() failed .. please report this bug "));
133 XBT_INFO("MSG_main finished");
135 XBT_INFO("Clean java world");
136 /* Cleanup java hosts */
137 hosts = MSG_hosts_as_dynar();
138 for (index = 0; index < xbt_dynar_length(hosts) - 1; index++) {
139 jhost = (jobject) MSG_host_get_data(xbt_dynar_get_as(hosts,index,m_host_t));
141 jhost_unref(env, jhost);
144 xbt_dynar_free(&hosts);
145 XBT_INFO("Clean native world");
147 JNIEXPORT void JNICALL
148 JNICALL Java_org_simgrid_msg_Msg_clean(JNIEnv * env, jclass cls)
150 /* cleanup native stuff. Calling it is ... useless since leaking memory at the end of the simulation is a non-issue */
151 MSG_error_t rv = MSG_OK != MSG_clean();
152 jxbt_check_res("MSG_clean()", rv, MSG_OK,
154 ("unexpected error : MSG_clean() failed .. please report this bug "));
157 JNIEXPORT void JNICALL
158 Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls,
159 jstring jplatformFile)
162 const char *platformFile =
163 (*env)->GetStringUTFChars(env, jplatformFile, 0);
165 MSG_create_environment(platformFile);
167 (*env)->ReleaseStringUTFChars(env, jplatformFile, platformFile);
169 JNIEXPORT void JNICALL
170 Java_org_simgrid_msg_Msg_debug(JNIEnv * env, jclass cls, jstring js)
172 const char *s = (*env)->GetStringUTFChars(env, js, 0);
174 (*env)->ReleaseStringUTFChars(env, js, s);
176 JNIEXPORT void JNICALL
177 Java_org_simgrid_msg_Msg_info(JNIEnv * env, jclass cls, jstring js)
179 const char *s = (*env)->GetStringUTFChars(env, js, 0);
181 (*env)->ReleaseStringUTFChars(env, js, s);
184 JNIEXPORT void JNICALL
185 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls,
186 jstring jdeploymentFile)
189 const char *deploymentFile =
190 (*env)->GetStringUTFChars(env, jdeploymentFile, 0);
192 SIMIX_function_register_default(create_jprocess);
193 MSG_launch_application(deploymentFile);
196 * Function called when there is the need to create the java Process object
197 * (when we are using deployement files).
198 * it HAS to be executed on the process context, else really bad things will happen.
200 static int create_jprocess(int argc, char *argv[]) {
201 JNIEnv *env = get_current_thread_env();
202 //Change the "." in class name for "/".
203 xbt_str_subst(argv[0],'.','/',0);
204 jclass class_Process = (*env)->FindClass(env, argv[0]);
205 xbt_str_subst(argv[0],'/','.',0);
206 //Retrieve the methodID for the constructor
207 xbt_assert((class_Process != NULL), "Class not found.");
208 jmethodID constructor_Process = (*env)->GetMethodID(env, class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
209 xbt_assert((constructor_Process != NULL), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
211 //Retrieve the name of the process.
212 jstring jname = (*env)->NewStringUTF(env, argv[0]);
213 //Build the arguments
214 jobjectArray args = (jobjectArray)((*env)->NewObjectArray(env,argc - 1,
215 (*env)->FindClass(env,"java/lang/String"),
216 (*env)->NewStringUTF(env,"")));
218 for (i = 1; i < argc; i++)
219 (*env)->SetObjectArrayElement(env,args,i - 1,(*env)->NewStringUTF(env, argv[i]));
220 //Retrieve the host for the process.
221 jstring jhostName = (*env)->NewStringUTF(env, MSG_host_get_name(MSG_host_self()));
222 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, NULL, jhostName);
223 //creates the process
224 jobject jprocess = (*env)->NewObject(env, class_Process, constructor_Process, jhost, jname, args);
225 xbt_assert((jprocess != NULL), "Process allocation failed.");
226 jprocess = (*env)->NewGlobalRef(env, jprocess);
227 //bind the process to the context
228 m_process_t process = MSG_process_self();
229 smx_ctx_java_t context = (smx_ctx_java_t)MSG_process_get_smx_ctx(process);
230 context->jprocess = jprocess;
231 /* sets the PID and the PPID of the process */
232 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
233 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
235 jprocess_bind(jprocess, process, env);