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 static 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 smx_factory_initializer_to_use = SIMIX_ctx_java_factory_init;
91 setlocale(LC_NUMERIC,"C");
94 argc = (int) (*env)->GetArrayLength(env, jargs);
97 argv = xbt_new(char *, argc + 1);
98 argv[0] = strdup("java");
100 for (index = 0; index < argc - 1; index++) {
101 jval = (jstring) (*env)->GetObjectArrayElement(env, jargs, index);
102 tmp = (*env)->GetStringUTFChars(env, jval, 0);
103 argv[index + 1] = strdup(tmp);
104 (*env)->ReleaseStringUTFChars(env, jval, tmp);
108 MSG_global_init(&argc, argv);
110 for (index = 0; index < argc; index++)
115 (*env)->GetJavaVM(env, &__java_vm);
118 JNIEXPORT void JNICALL
119 JNICALL Java_org_simgrid_msg_Msg_run(JNIEnv * env, jclass cls)
127 XBT_INFO("Ready to run MSG_MAIN");
129 XBT_INFO("Done running MSG_MAIN");
130 jxbt_check_res("MSG_main()", rv, MSG_OK,
132 ("unexpected error : MSG_main() failed .. please report this bug "));
134 XBT_INFO("MSG_main finished");
136 XBT_INFO("Clean java world");
137 /* Cleanup java hosts */
138 hosts = MSG_hosts_as_dynar();
139 for (index = 0; index < xbt_dynar_length(hosts) - 1; index++) {
140 jhost = (jobject) MSG_host_get_data(xbt_dynar_get_as(hosts,index,m_host_t));
142 jhost_unref(env, jhost);
145 xbt_dynar_free(&hosts);
146 XBT_INFO("Clean native world");
148 JNIEXPORT void JNICALL
149 JNICALL Java_org_simgrid_msg_Msg_clean(JNIEnv * env, jclass cls)
151 /* cleanup native stuff. Calling it is ... useless since leaking memory at the end of the simulation is a non-issue */
152 MSG_error_t rv = MSG_OK != MSG_clean();
153 jxbt_check_res("MSG_clean()", rv, MSG_OK,
155 ("unexpected error : MSG_clean() failed .. please report this bug "));
158 JNIEXPORT void JNICALL
159 Java_org_simgrid_msg_Msg_createEnvironment(JNIEnv * env, jclass cls,
160 jstring jplatformFile)
163 const char *platformFile =
164 (*env)->GetStringUTFChars(env, jplatformFile, 0);
166 MSG_create_environment(platformFile);
168 (*env)->ReleaseStringUTFChars(env, jplatformFile, platformFile);
170 JNIEXPORT void JNICALL
171 Java_org_simgrid_msg_Msg_debug(JNIEnv * env, jclass cls, jstring js)
173 const char *s = (*env)->GetStringUTFChars(env, js, 0);
175 (*env)->ReleaseStringUTFChars(env, js, s);
177 JNIEXPORT void JNICALL
178 Java_org_simgrid_msg_Msg_info(JNIEnv * env, jclass cls, jstring js)
180 const char *s = (*env)->GetStringUTFChars(env, js, 0);
182 (*env)->ReleaseStringUTFChars(env, js, s);
185 JNIEXPORT void JNICALL
186 Java_org_simgrid_msg_Msg_deployApplication(JNIEnv * env, jclass cls,
187 jstring jdeploymentFile)
190 const char *deploymentFile =
191 (*env)->GetStringUTFChars(env, jdeploymentFile, 0);
193 SIMIX_function_register_default(create_jprocess);
194 MSG_launch_application(deploymentFile);
197 * Function called when there is the need to create the java Process object
198 * (when we are using deployement files).
199 * it HAS to be executed on the process context, else really bad things will happen.
201 static int create_jprocess(int argc, char *argv[]) {
202 JNIEnv *env = get_current_thread_env();
203 //Change the "." in class name for "/".
204 xbt_str_subst(argv[0],'.','/',0);
205 jclass class_Process = (*env)->FindClass(env, argv[0]);
206 xbt_str_subst(argv[0],'/','.',0);
207 //Retrieve the methodID for the constructor
208 xbt_assert((class_Process != NULL), "Class not found.");
209 jmethodID constructor_Process = (*env)->GetMethodID(env, class_Process, "<init>", "(Lorg/simgrid/msg/Host;Ljava/lang/String;[Ljava/lang/String;)V");
210 xbt_assert((constructor_Process != NULL), "Constructor not found for class %s. Is there a (Host, String ,String[]) constructor in your class ?", argv[0]);
212 //Retrieve the name of the process.
213 jstring jname = (*env)->NewStringUTF(env, argv[0]);
214 //Build the arguments
215 jobjectArray args = (jobjectArray)((*env)->NewObjectArray(env,argc - 1,
216 (*env)->FindClass(env,"java/lang/String"),
217 (*env)->NewStringUTF(env,"")));
219 for (i = 1; i < argc; i++)
220 (*env)->SetObjectArrayElement(env,args,i - 1,(*env)->NewStringUTF(env, argv[i]));
221 //Retrieve the host for the process.
222 jstring jhostName = (*env)->NewStringUTF(env, MSG_host_get_name(MSG_host_self()));
223 jobject jhost = Java_org_simgrid_msg_Host_getByName(env, NULL, jhostName);
224 //creates the process
225 jobject jprocess = (*env)->NewObject(env, class_Process, constructor_Process, jhost, jname, args);
226 xbt_assert((jprocess != NULL), "Process allocation failed.");
227 jprocess = (*env)->NewGlobalRef(env, jprocess);
228 //bind the process to the context
229 m_process_t process = MSG_process_self();
230 smx_ctx_java_t context = (smx_ctx_java_t)MSG_process_get_smx_ctx(process);
231 context->jprocess = jprocess;
232 /* sets the PID and the PPID of the process */
233 (*env)->SetIntField(env, jprocess, jprocess_field_Process_pid,(jint) MSG_process_get_PID(process));
234 (*env)->SetIntField(env, jprocess, jprocess_field_Process_ppid, (jint) MSG_process_get_PPID(process));
236 jprocess_bind(jprocess, process, env);