1 /* Functions related to the MSG VM API. */
3 /* Copyright (c) 2012-2014. 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 "jmsg_host.h"
12 #include "jmsg_process.h"
13 #include "jxbt_utilities.h"
14 #include "simgrid/msg.h"
15 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
17 static jfieldID jvm_field_bind;
19 void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm) {
20 (*env)->SetLongField(env, jvm, jvm_field_bind, (intptr_t)vm);
22 msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) {
23 return (msg_vm_t)(intptr_t)(*env)->GetLongField(env, jvm, jvm_field_bind);
26 JNIEXPORT void JNICALL
27 Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls) {
28 jclass jprocess_class_VM = (*env)->FindClass(env, "org/simgrid/msg/VM");
29 jvm_field_bind = jxbt_get_jfield(env, jprocess_class_VM, "bind", "J");
30 if (!jvm_field_bind ) {
31 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
35 JNIEXPORT jint JNICALL
36 Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm) {
37 msg_vm_t vm = jvm_get_native(env,jvm);
38 return (jint) MSG_vm_is_created(vm);
41 JNIEXPORT jint JNICALL
42 Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm) {
43 msg_vm_t vm = jvm_get_native(env,jvm);
44 return (jint) MSG_vm_is_running(vm);
47 JNIEXPORT jint JNICALL
48 Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm) {
49 msg_vm_t vm = jvm_get_native(env,jvm);
50 return (jint) MSG_vm_is_migrating(vm);
53 JNIEXPORT jint JNICALL
54 Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm) {
55 msg_vm_t vm = jvm_get_native(env,jvm);
56 return (jint) MSG_vm_is_suspended(vm);
59 JNIEXPORT jint JNICALL
60 Java_org_simgrid_msg_VM_isSaving(JNIEnv * env, jobject jvm) {
61 msg_vm_t vm = jvm_get_native(env,jvm);
62 return (jint) MSG_vm_is_saving(vm);
65 JNIEXPORT jint JNICALL
66 Java_org_simgrid_msg_VM_isSaved(JNIEnv * env, jobject jvm) {
67 msg_vm_t vm = jvm_get_native(env,jvm);
68 return (jint) MSG_vm_is_saved(vm);
71 JNIEXPORT jint JNICALL
72 Java_org_simgrid_msg_VM_isRestoring(JNIEnv * env, jobject jvm) {
73 msg_vm_t vm = jvm_get_native(env,jvm);
74 return (jint) MSG_vm_is_restoring(vm);
77 JNIEXPORT void JNICALL
78 Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jint load) {
80 msg_vm_t vm = jvm_get_native(env,jvm);
81 double bound = MSG_get_host_speed(vm) * load / 100;
82 MSG_vm_set_bound(vm, bound);
85 JNIEXPORT void JNICALL
86 Java_org_simgrid_msg_VM_create(JNIEnv *env, jobject jvm, jobject jhost, jstring jname,
87 jint jncore, jint jramsize, jint jnetcap, jstring jdiskpath, jint jdisksize, jint jmig_netspeed, jint jdp_intensity) {
89 msg_host_t host = jhost_get_native(env, jhost);
92 name = (*env)->GetStringUTFChars(env, jname, 0);
93 name = xbt_strdup(name);
95 // TODO disk concerns are not taken into account yet
96 // const char *diskpath;
97 // disk_path = (*env)->GetStringUTFChars(env, jdiskpath, 0);
98 // disk_path = xbt_strdup(disk_path);
100 msg_vm_t vm = MSG_vm_create(host, name, (int) jncore, (int) jramsize,
101 (int) jnetcap, NULL, (int) jdisksize, (int) jmig_netspeed, (int) jdp_intensity);
103 jvm_bind(env,jvm,vm);
106 JNIEXPORT void JNICALL
107 Java_org_simgrid_msg_VM_destroy(JNIEnv *env, jobject jvm) {
108 msg_vm_t vm = jvm_get_native(env,jvm);
112 JNIEXPORT void JNICALL
113 Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm) {
114 msg_vm_t vm = jvm_get_native(env,jvm);
118 JNIEXPORT void JNICALL
119 Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) {
120 msg_vm_t vm = jvm_get_native(env,jvm);
124 JNIEXPORT void JNICALL
125 Java_org_simgrid_msg_VM_internalmig(JNIEnv *env, jobject jvm, jobject jhost) {
126 msg_vm_t vm = jvm_get_native(env,jvm);
127 msg_host_t host = jhost_get_native(env, jhost);
130 MSG_vm_migrate(vm,host);
132 XBT_INFO("CATCH EXCEPTION MIGRATION %s",e.msg);
134 jxbt_throw_host_failure(env, (char*)"during migration");
138 JNIEXPORT void JNICALL
139 Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) {
140 msg_vm_t vm = jvm_get_native(env,jvm);
143 JNIEXPORT void JNICALL
144 Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) {
145 msg_vm_t vm = jvm_get_native(env,jvm);
149 JNIEXPORT void JNICALL
150 Java_org_simgrid_msg_VM_save(JNIEnv *env, jobject jvm) {
151 msg_vm_t vm = jvm_get_native(env,jvm);
154 JNIEXPORT void JNICALL
155 Java_org_simgrid_msg_VM_restore(JNIEnv *env, jobject jvm) {
156 msg_vm_t vm = jvm_get_native(env,jvm);
162 JNIEXPORT jobject JNICALL
163 Java_org_simgrid_msg_VM_get_pm(JNIEnv *env, jobject jvm) {
165 msg_vm_t vm = jvm_get_native(env,jvm);
166 msg_host_t host = MSG_vm_get_pm(vm);
168 if (!xbt_lib_get_level(host, JAVA_HOST_LEVEL)) {
169 /* the native host not yet associated with the java host instance */
171 /* instanciate a new java host instance */
172 jhost = jhost_new_instance(env);
175 jxbt_throw_jni(env, "java host instantiation failed");
179 /* get a global reference to the newly created host */
180 jhost = jhost_ref(env, jhost);
183 jxbt_throw_jni(env, "global ref allocation failed");
186 /* Sets the host name */
187 const char *name = MSG_host_get_name(host);
188 jobject jname = (*env)->NewStringUTF(env,name);
189 (*env)->SetObjectField(env, jhost, jxbt_get_jfield(env, (*env)->FindClass(env, "org/simgrid/msg/Host"), "name", "Ljava/lang/String;"), jname);
190 /* Bind & store it */
191 jhost_bind(jhost, host, env);
192 xbt_lib_set(host_lib, host->key, JAVA_HOST_LEVEL, (void *) jhost);
194 jhost = (jobject) xbt_lib_get_level(host, JAVA_HOST_LEVEL);