1 /* Functions related to the MSG VM API. */
3 /* Copyright (c) 2012-2013. 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_process.h"
11 #include "jxbt_utilities.h"
13 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
15 static jfieldID jvm_field_bind;
17 void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm) {
18 (*env)->SetLongField(env, jvm, jvm_field_bind, (intptr_t)vm);
20 msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) {
21 return (msg_vm_t)(intptr_t)(*env)->GetLongField(env, jvm, jvm_field_bind);
24 JNIEXPORT void JNICALL
25 Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls) {
26 jclass jprocess_class_VM = (*env)->FindClass(env, "org/simgrid/msg/VM");
27 jvm_field_bind = jxbt_get_jfield(env, jprocess_class_VM, "bind", "J");
28 if (!jvm_field_bind ) {
29 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
33 JNIEXPORT jint JNICALL
34 Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm) {
35 msg_vm_t vm = jvm_get_native(env,jvm);
36 return (jint) MSG_vm_is_created(vm);
39 JNIEXPORT jint JNICALL
40 Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm) {
41 msg_vm_t vm = jvm_get_native(env,jvm);
42 return (jint) MSG_vm_is_running(vm);
45 JNIEXPORT jint JNICALL
46 Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm) {
47 msg_vm_t vm = jvm_get_native(env,jvm);
48 return (jint) MSG_vm_is_migrating(vm);
51 JNIEXPORT jint JNICALL
52 Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm) {
53 msg_vm_t vm = jvm_get_native(env,jvm);
54 return (jint) MSG_vm_is_suspended(vm);
57 JNIEXPORT jint JNICALL
58 Java_org_simgrid_msg_VM_isSaving(JNIEnv * env, jobject jvm) {
59 msg_vm_t vm = jvm_get_native(env,jvm);
60 return (jint) MSG_vm_is_saving(vm);
63 JNIEXPORT jint JNICALL
64 Java_org_simgrid_msg_VM_isSaved(JNIEnv * env, jobject jvm) {
65 msg_vm_t vm = jvm_get_native(env,jvm);
66 return (jint) MSG_vm_is_saved(vm);
69 JNIEXPORT jint JNICALL
70 Java_org_simgrid_msg_VM_isRestoring(JNIEnv * env, jobject jvm) {
71 msg_vm_t vm = jvm_get_native(env,jvm);
72 return (jint) MSG_vm_is_restoring(vm);
75 JNIEXPORT void JNICALL
76 Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jint load) {
78 msg_vm_t vm = jvm_get_native(env,jvm);
79 double bound = MSG_get_host_speed(vm) * load / 100;
80 MSG_vm_set_bound(vm, bound);
83 JNIEXPORT void JNICALL
84 Java_org_simgrid_msg_VM_create(JNIEnv *env, jobject jvm, jobject jhost, jstring jname,
85 jint jncore, jint jramsize, jint jnetcap, jstring jdiskpath, jint jdisksize, jint jmig_netspeed, jint jdp_intensity) {
87 msg_host_t host = jhost_get_native(env, jhost);
90 name = (*env)->GetStringUTFChars(env, jname, 0);
91 name = xbt_strdup(name);
93 // TODO disk concerns are not taken into account yet
94 // const char *diskpath;
95 // disk_path = (*env)->GetStringUTFChars(env, jdiskpath, 0);
96 // disk_path = xbt_strdup(disk_path);
98 msg_vm_t vm = MSG_vm_create(host, name, (int) jncore, (int) jramsize,
99 (int) jnetcap, NULL, (int) jdisksize, (int) jmig_netspeed, (int) jdp_intensity);
101 jvm_bind(env,jvm,vm);
104 JNIEXPORT void JNICALL
105 Java_org_simgrid_msg_VM_destroy(JNIEnv *env, jobject jvm) {
106 msg_vm_t vm = jvm_get_native(env,jvm);
110 JNIEXPORT void JNICALL
111 Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm) {
112 msg_vm_t vm = jvm_get_native(env,jvm);
116 JNIEXPORT void JNICALL
117 Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) {
118 msg_vm_t vm = jvm_get_native(env,jvm);
122 JNIEXPORT void JNICALL
123 Java_org_simgrid_msg_VM_internalmig(JNIEnv *env, jobject jvm, jobject jhost) {
124 msg_vm_t vm = jvm_get_native(env,jvm);
125 msg_host_t host = jhost_get_native(env, jhost);
126 MSG_vm_migrate(vm,host);
129 JNIEXPORT void JNICALL
130 Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) {
131 msg_vm_t vm = jvm_get_native(env,jvm);
134 JNIEXPORT void JNICALL
135 Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) {
136 msg_vm_t vm = jvm_get_native(env,jvm);
140 JNIEXPORT void JNICALL
141 Java_org_simgrid_msg_VM_save(JNIEnv *env, jobject jvm) {
142 msg_vm_t vm = jvm_get_native(env,jvm);
145 JNIEXPORT void JNICALL
146 Java_org_simgrid_msg_VM_restore(JNIEnv *env, jobject jvm) {
147 msg_vm_t vm = jvm_get_native(env,jvm);
153 JNIEXPORT jobject JNICALL
154 Java_org_simgrid_msg_VM_get_pm(JNIEnv *env, jobject jvm) {
156 msg_vm_t vm = jvm_get_native(env,jvm);
157 msg_host_t host = MSG_vm_get_pm(vm);
159 if (!MSG_host_get_data(host)) {
160 /* the native host not yet associated with the java host instance */
162 /* instanciate a new java host instance */
163 jhost = jhost_new_instance(env);
166 jxbt_throw_jni(env, "java host instantiation failed");
170 /* get a global reference to the newly created host */
171 jhost = jhost_ref(env, jhost);
174 jxbt_throw_jni(env, "global ref allocation failed");
177 /* Sets the host name */
178 const char *name = MSG_host_get_name(host);
179 jobject jname = (*env)->NewStringUTF(env,name);
180 (*env)->SetObjectField(env, jhost, jxbt_get_jfield(env, (*env)->FindClass(env, "org/simgrid/msg/Host"), "name", "Ljava/lang/String;"), jname);
181 /* Bind & store it */
182 jhost_bind(jhost, host, env);
183 MSG_host_set_data(host, (void *) jhost);
185 jhost = (jobject) MSG_host_get_data(host);