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. */
10 #include "jmsg_host.h"
11 #include "jmsg_process.h"
12 #include "jxbt_utilities.h"
14 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
16 static jfieldID jvm_field_bind;
18 void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm) {
19 (*env)->SetLongField(env, jvm, jvm_field_bind, (intptr_t)vm);
21 msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) {
22 return (msg_vm_t)(intptr_t)(*env)->GetLongField(env, jvm, jvm_field_bind);
25 JNIEXPORT void JNICALL
26 Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls) {
27 jclass jprocess_class_VM = (*env)->FindClass(env, "org/simgrid/msg/VM");
28 jvm_field_bind = jxbt_get_jfield(env, jprocess_class_VM, "bind", "J");
29 if (!jvm_field_bind ) {
30 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
34 JNIEXPORT jint JNICALL
35 Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm) {
36 msg_vm_t vm = jvm_get_native(env,jvm);
37 return (jint) MSG_vm_is_created(vm);
40 JNIEXPORT jint JNICALL
41 Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm) {
42 msg_vm_t vm = jvm_get_native(env,jvm);
43 return (jint) MSG_vm_is_running(vm);
46 JNIEXPORT jint JNICALL
47 Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm) {
48 msg_vm_t vm = jvm_get_native(env,jvm);
49 return (jint) MSG_vm_is_migrating(vm);
52 JNIEXPORT jint JNICALL
53 Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm) {
54 msg_vm_t vm = jvm_get_native(env,jvm);
55 return (jint) MSG_vm_is_suspended(vm);
58 JNIEXPORT jint JNICALL
59 Java_org_simgrid_msg_VM_isSaving(JNIEnv * env, jobject jvm) {
60 msg_vm_t vm = jvm_get_native(env,jvm);
61 return (jint) MSG_vm_is_saving(vm);
64 JNIEXPORT jint JNICALL
65 Java_org_simgrid_msg_VM_isSaved(JNIEnv * env, jobject jvm) {
66 msg_vm_t vm = jvm_get_native(env,jvm);
67 return (jint) MSG_vm_is_saved(vm);
70 JNIEXPORT jint JNICALL
71 Java_org_simgrid_msg_VM_isRestoring(JNIEnv * env, jobject jvm) {
72 msg_vm_t vm = jvm_get_native(env,jvm);
73 return (jint) MSG_vm_is_restoring(vm);
76 JNIEXPORT void JNICALL
77 Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jint load) {
79 msg_vm_t vm = jvm_get_native(env,jvm);
80 double bound = MSG_get_host_speed(vm) * load / 100;
81 MSG_vm_set_bound(vm, bound);
84 JNIEXPORT void JNICALL
85 Java_org_simgrid_msg_VM_create(JNIEnv *env, jobject jvm, jobject jhost, jstring jname,
86 jint jncore, jint jramsize, jint jnetcap, jstring jdiskpath, jint jdisksize, jint jmig_netspeed, jint jdp_intensity) {
88 msg_host_t host = jhost_get_native(env, jhost);
91 name = (*env)->GetStringUTFChars(env, jname, 0);
92 name = xbt_strdup(name);
94 // TODO disk concerns are not taken into account yet
95 // const char *diskpath;
96 // disk_path = (*env)->GetStringUTFChars(env, jdiskpath, 0);
97 // disk_path = xbt_strdup(disk_path);
99 msg_vm_t vm = MSG_vm_create(host, name, (int) jncore, (int) jramsize,
100 (int) jnetcap, NULL, (int) jdisksize, (int) jmig_netspeed, (int) jdp_intensity);
102 jvm_bind(env,jvm,vm);
105 JNIEXPORT void JNICALL
106 Java_org_simgrid_msg_VM_destroy(JNIEnv *env, jobject jvm) {
107 msg_vm_t vm = jvm_get_native(env,jvm);
111 JNIEXPORT void JNICALL
112 Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm) {
113 msg_vm_t vm = jvm_get_native(env,jvm);
117 JNIEXPORT void JNICALL
118 Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) {
119 msg_vm_t vm = jvm_get_native(env,jvm);
123 JNIEXPORT void JNICALL
124 Java_org_simgrid_msg_VM_internalmig(JNIEnv *env, jobject jvm, jobject jhost) {
125 msg_vm_t vm = jvm_get_native(env,jvm);
126 msg_host_t host = jhost_get_native(env, jhost);
127 MSG_vm_migrate(vm,host);
130 JNIEXPORT void JNICALL
131 Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) {
132 msg_vm_t vm = jvm_get_native(env,jvm);
135 JNIEXPORT void JNICALL
136 Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) {
137 msg_vm_t vm = jvm_get_native(env,jvm);
141 JNIEXPORT void JNICALL
142 Java_org_simgrid_msg_VM_save(JNIEnv *env, jobject jvm) {
143 msg_vm_t vm = jvm_get_native(env,jvm);
146 JNIEXPORT void JNICALL
147 Java_org_simgrid_msg_VM_restore(JNIEnv *env, jobject jvm) {
148 msg_vm_t vm = jvm_get_native(env,jvm);
154 JNIEXPORT jobject JNICALL
155 Java_org_simgrid_msg_VM_get_pm(JNIEnv *env, jobject jvm) {
157 msg_vm_t vm = jvm_get_native(env,jvm);
158 msg_host_t host = MSG_vm_get_pm(vm);
160 if (!MSG_host_get_data(host)) {
161 /* the native host not yet associated with the java host instance */
163 /* instanciate a new java host instance */
164 jhost = jhost_new_instance(env);
167 jxbt_throw_jni(env, "java host instantiation failed");
171 /* get a global reference to the newly created host */
172 jhost = jhost_ref(env, jhost);
175 jxbt_throw_jni(env, "global ref allocation failed");
178 /* Sets the host name */
179 const char *name = MSG_host_get_name(host);
180 jobject jname = (*env)->NewStringUTF(env,name);
181 (*env)->SetObjectField(env, jhost, jxbt_get_jfield(env, (*env)->FindClass(env, "org/simgrid/msg/Host"), "name", "Ljava/lang/String;"), jname);
182 /* Bind & store it */
183 jhost_bind(jhost, host, env);
184 MSG_host_set_data(host, (void *) jhost);
186 jhost = (jobject) MSG_host_get_data(host);