1 /* Functions related to the MSG VM API. */
3 /* Copyright (c) 2012-2015. 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 #include <surf/surf_routing.h>
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(jmsg);
19 static jfieldID jvm_field_bind;
21 void jvm_bind(JNIEnv *env, jobject jvm, msg_vm_t vm) {
22 env->SetLongField(jvm, jvm_field_bind, (intptr_t)vm);
24 msg_vm_t jvm_get_native(JNIEnv *env, jobject jvm) {
25 return (msg_vm_t)(intptr_t)env->GetLongField(jvm, jvm_field_bind);
28 JNIEXPORT void JNICALL
29 Java_org_simgrid_msg_VM_nativeInit(JNIEnv *env, jclass cls) {
30 jclass jprocess_class_VM = env->FindClass("org/simgrid/msg/VM");
31 jvm_field_bind = jxbt_get_jfield(env, jprocess_class_VM, "bind", "J");
32 if (!jvm_field_bind ) {
33 jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
37 JNIEXPORT jint JNICALL
38 Java_org_simgrid_msg_VM_isCreated(JNIEnv * env, jobject jvm) {
39 msg_vm_t vm = jvm_get_native(env,jvm);
40 return (jint) MSG_vm_is_created(vm);
43 JNIEXPORT jint JNICALL
44 Java_org_simgrid_msg_VM_isRunning(JNIEnv * env, jobject jvm) {
45 msg_vm_t vm = jvm_get_native(env,jvm);
46 return (jint) MSG_vm_is_running(vm);
49 JNIEXPORT jint JNICALL
50 Java_org_simgrid_msg_VM_isMigrating(JNIEnv * env, jobject jvm) {
51 msg_vm_t vm = jvm_get_native(env,jvm);
52 return (jint) MSG_vm_is_migrating(vm);
55 JNIEXPORT jint JNICALL
56 Java_org_simgrid_msg_VM_isSuspended(JNIEnv * env, jobject jvm) {
57 msg_vm_t vm = jvm_get_native(env,jvm);
58 return (jint) MSG_vm_is_suspended(vm);
61 JNIEXPORT jint JNICALL
62 Java_org_simgrid_msg_VM_isSaving(JNIEnv * env, jobject jvm) {
63 msg_vm_t vm = jvm_get_native(env,jvm);
64 return (jint) MSG_vm_is_saving(vm);
67 JNIEXPORT jint JNICALL
68 Java_org_simgrid_msg_VM_isSaved(JNIEnv * env, jobject jvm) {
69 msg_vm_t vm = jvm_get_native(env,jvm);
70 return (jint) MSG_vm_is_saved(vm);
73 JNIEXPORT jint JNICALL
74 Java_org_simgrid_msg_VM_isRestoring(JNIEnv * env, jobject jvm) {
75 msg_vm_t vm = jvm_get_native(env,jvm);
76 return (jint) MSG_vm_is_restoring(vm);
79 JNIEXPORT void JNICALL
80 Java_org_simgrid_msg_VM_setBound(JNIEnv *env, jobject jvm, jint load) {
82 msg_vm_t vm = jvm_get_native(env,jvm);
83 double bound = MSG_get_host_speed(vm) * load / 100;
84 MSG_vm_set_bound(vm, bound);
87 JNIEXPORT void JNICALL
88 Java_org_simgrid_msg_VM_create(JNIEnv *env, jobject jvm, jobject jhost, jstring jname,
89 jint jncore, jint jramsize, jint jnetcap, jstring jdiskpath, jint jdisksize, jint jmig_netspeed, jint jdp_intensity) {
91 msg_host_t host = jhost_get_native(env, jhost);
94 name = env->GetStringUTFChars(jname, 0);
95 name = xbt_strdup(name);
97 // TODO disk concerns are not taken into account yet
98 // const char *diskpath;
99 // disk_path = (*env)->GetStringUTFChars(env, jdiskpath, 0);
100 // disk_path = xbt_strdup(disk_path);
102 msg_vm_t vm = MSG_vm_create(host, name, (int) jncore, (int) jramsize,
103 (int) jnetcap, NULL, (int) jdisksize, (int) jmig_netspeed, (int) jdp_intensity);
105 jvm_bind(env,jvm,vm);
108 JNIEXPORT void JNICALL
109 Java_org_simgrid_msg_VM_nativeFinalize(JNIEnv *env, jobject jvm) {
110 msg_vm_t vm = jvm_get_native(env,jvm);
114 JNIEXPORT void JNICALL
115 Java_org_simgrid_msg_VM_start(JNIEnv *env, jobject jvm) {
116 msg_vm_t vm = jvm_get_native(env,jvm);
120 JNIEXPORT void JNICALL
121 Java_org_simgrid_msg_VM_shutdown(JNIEnv *env, jobject jvm) {
122 msg_vm_t vm = jvm_get_native(env,jvm);
126 JNIEXPORT void JNICALL
127 Java_org_simgrid_msg_VM_internalmig(JNIEnv *env, jobject jvm, jobject jhost) {
128 msg_vm_t vm = jvm_get_native(env,jvm);
129 msg_host_t host = jhost_get_native(env, jhost);
132 MSG_vm_migrate(vm,host);
134 XBT_INFO("CATCH EXCEPTION MIGRATION %s",e.msg);
136 jxbt_throw_host_failure(env, (char*)"during migration");
140 JNIEXPORT void JNICALL
141 Java_org_simgrid_msg_VM_suspend(JNIEnv *env, jobject jvm) {
142 msg_vm_t vm = jvm_get_native(env,jvm);
145 JNIEXPORT void JNICALL
146 Java_org_simgrid_msg_VM_resume(JNIEnv *env, jobject jvm) {
147 msg_vm_t vm = jvm_get_native(env,jvm);
151 JNIEXPORT void JNICALL
152 Java_org_simgrid_msg_VM_save(JNIEnv *env, jobject jvm) {
153 msg_vm_t vm = jvm_get_native(env,jvm);
156 JNIEXPORT void JNICALL
157 Java_org_simgrid_msg_VM_restore(JNIEnv *env, jobject jvm) {
158 msg_vm_t vm = jvm_get_native(env,jvm);
164 JNIEXPORT jobject JNICALL
165 Java_org_simgrid_msg_VM_get_pm(JNIEnv *env, jobject jvm) {
167 msg_vm_t vm = jvm_get_native(env,jvm);
168 msg_host_t host = MSG_vm_get_pm(vm);
170 if (!host->extension(JAVA_HOST_LEVEL)) {
172 /* the native host not yet associated with the java host instance */
174 /* instanciate a new java host instance */
175 jhost = jhost_new_instance(env);
178 jxbt_throw_jni(env, "java host instantiation failed");
182 /* get a global reference to the newly created host */
183 jhost = jhost_ref(env, jhost);
186 jxbt_throw_jni(env, "global ref allocation failed");
189 /* Sets the host name */
190 const char *name = MSG_host_get_name(host);
191 jobject jname = env->NewStringUTF(name);
192 env->SetObjectField(jhost, jxbt_get_jfield(env,
193 env->FindClass("org/simgrid/msg/Host"), "name", "Ljava/lang/String;"),
195 /* Bind & store it */
196 jhost_bind(jhost, host, env);
197 host->extension_set(JAVA_HOST_LEVEL, (void *) jhost);
199 jhost = (jobject) host->extension(JAVA_HOST_LEVEL);