1 /* Functions related to the MSG VM API. */
3 /* Copyright (c) 2012. The SimGrid Team. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "jmsg_process.h"
10 #include "jxbt_utilities.h"
12 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
14 static jfieldID jvm_field_bind;
16 void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm) {
17 (*env)->SetLongField(env, jvm, jvm_field_bind, (intptr_t)vm);
19 msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) {
20 return (msg_vm_t)(intptr_t)(*env)->GetLongField(env, jvm, jvm_field_bind);
23 JNIEXPORT void JNICALL
24 Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls) {
25 jclass jprocess_class_VM = (*env)->FindClass(env, "org/simgrid/msg/VM");
26 jvm_field_bind = jxbt_get_jfield(env, jprocess_class_VM, "bind", "J");
27 if (!jvm_field_bind ) {
28 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
32 JNIEXPORT jint JNICALL
33 Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm) {
34 msg_vm_t vm = jvm_get_native(env,jvm);
35 return (jint) MSG_vm_is_created(vm);
38 JNIEXPORT jint JNICALL
39 Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm) {
40 msg_vm_t vm = jvm_get_native(env,jvm);
41 return (jint) MSG_vm_is_running(vm);
44 JNIEXPORT jint JNICALL
45 Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm) {
46 msg_vm_t vm = jvm_get_native(env,jvm);
47 return (jint) MSG_vm_is_migrating(vm);
50 JNIEXPORT jint JNICALL
51 Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm) {
52 msg_vm_t vm = jvm_get_native(env,jvm);
53 return (jint) MSG_vm_is_suspended(vm);
56 JNIEXPORT jint JNICALL
57 Java_org_simgrid_msg_VM_isSaving(JNIEnv * env, jobject jvm) {
58 msg_vm_t vm = jvm_get_native(env,jvm);
59 return (jint) MSG_vm_is_saving(vm);
62 JNIEXPORT jint JNICALL
63 Java_org_simgrid_msg_VM_isSaved(JNIEnv * env, jobject jvm) {
64 msg_vm_t vm = jvm_get_native(env,jvm);
65 return (jint) MSG_vm_is_saved(vm);
68 JNIEXPORT jint JNICALL
69 Java_org_simgrid_msg_VM_isRestoring(JNIEnv * env, jobject jvm) {
70 msg_vm_t vm = jvm_get_native(env,jvm);
71 return (jint) MSG_vm_is_restoring(vm);
73 JNIEXPORT void JNICALL
74 Java_org_simgrid_msg_VM_create(JNIEnv *env, jobject jvm, jobject jhost, jstring jname,
75 jint jncore, jint jramsize, jint jnetcap, jstring jdiskpath, jint jdisksize) {
76 msg_host_t host = jhost_get_native(env, jhost);
79 name = (*env)->GetStringUTFChars(env, jname, 0);
80 name = xbt_strdup(name);
82 // TODO disk concerns are not taken into account yet
83 // const char *diskpath;
84 // disk_path = (*env)->GetStringUTFChars(env, jdiskpath, 0);
85 // disk_path = xbt_strdup(disk_path);
87 msg_vm_t vm = MSG_vm_create(host, name, (int) jncore, (int) jramsize,
88 (int) jnetcap, NULL, (int) jdisksize);
93 JNIEXPORT void JNICALL
94 Java_org_simgrid_msg_VM_destroy(JNIEnv *env, jobject jvm) {
95 msg_vm_t vm = jvm_get_native(env,jvm);
99 JNIEXPORT void JNICALL
100 Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm) {
101 msg_vm_t vm = jvm_get_native(env,jvm);
105 JNIEXPORT void JNICALL
106 Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) {
107 msg_vm_t vm = jvm_get_native(env,jvm);
111 JNIEXPORT void JNICALL
112 Java_org_simgrid_msg_VM_internalmig(JNIEnv *env, jobject jvm, jobject jhost) {
113 msg_vm_t vm = jvm_get_native(env,jvm);
114 msg_host_t host = jhost_get_native(env, jhost);
116 XBT_INFO("Start migration of %s to %s", MSG_host_get_name(vm), MSG_host_get_name(host));
117 MSG_vm_migrate(vm,host);
118 XBT_INFO("Migration done");
121 JNIEXPORT void JNICALL
122 Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) {
123 msg_vm_t vm = jvm_get_native(env,jvm);
126 JNIEXPORT void JNICALL
127 Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) {
128 msg_vm_t vm = jvm_get_native(env,jvm);
132 JNIEXPORT void JNICALL
133 Java_org_simgrid_msg_VM_save(JNIEnv *env, jobject jvm) {
134 msg_vm_t vm = jvm_get_native(env,jvm);
137 JNIEXPORT void JNICALL
138 Java_org_simgrid_msg_VM_restore(JNIEnv *env, jobject jvm) {
139 msg_vm_t vm = jvm_get_native(env,jvm);
145 JNIEXPORT jobject JNICALL
146 Java_org_simgrid_msg_VM_get_pm(JNIEnv *env, jobject jvm) {
148 msg_vm_t vm = jvm_get_native(env,jvm);
149 msg_host_t host = MSG_vm_get_pm(vm);
151 if (!MSG_host_get_data(host)) {
152 /* the native host not yet associated with the java host instance */
154 /* instanciate a new java host instance */
155 jhost = jhost_new_instance(env);
158 jxbt_throw_jni(env, "java host instantiation failed");
162 /* get a global reference to the newly created host */
163 jhost = jhost_ref(env, jhost);
166 jxbt_throw_jni(env, "global ref allocation failed");
169 /* Sets the host name */
170 const char *name = MSG_host_get_name(host);
171 jobject jname = (*env)->NewStringUTF(env,name);
172 (*env)->SetObjectField(env, jhost, jxbt_get_jfield(env, (*env)->FindClass(env, "org/simgrid/msg/Host"), "name", "Ljava/lang/String;"), jname);
173 /* Bind & store it */
174 jhost_bind(jhost, host, env);
175 MSG_host_set_data(host, (void *) jhost);
177 jhost = (jobject) MSG_host_get_data(host);