1 /* Functions related to the RngStream Java port */
3 /* Copyright (c) 2007-2015. 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. */
9 #include <xbt/sysdep.h>
11 #include "jmsg_rngstream.h"
12 #include "jxbt_utilities.h"
14 jfieldID jrngstream_bind;
16 RngStream jrngstream_to_native(JNIEnv *env, jobject jrngstream) {
17 RngStream rngstream = (RngStream)(intptr_t)env->GetLongField(jrngstream, jrngstream_bind);
19 jxbt_throw_notbound(env, "rngstream", jrngstream);
25 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_nativeInit(JNIEnv *env, jclass cls) {
26 jclass class_RngStream = env->FindClass("org/simgrid/msg/RngStream");
28 jrngstream_bind = jxbt_get_jfield(env, class_RngStream, "bind", "J");
31 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_create(JNIEnv *env, jobject jrngstream, jstring jname) {
32 const char *name = env->GetStringUTFChars(jname, 0);
33 RngStream rngstream = RngStream_CreateStream(name);
34 //Bind the RngStream object
35 env->SetLongField(jrngstream, jrngstream_bind, (intptr_t)rngstream);
37 env->ReleaseStringUTFChars(jname, name);
40 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_nativeFinalize(JNIEnv *env, jobject jrngstream) {
41 RngStream rngstream = jrngstream_to_native(env, jrngstream);
42 RngStream_DeleteStream(&rngstream);
43 env->SetLongField(jrngstream, jrngstream_bind, (intptr_t)nullptr);
46 JNIEXPORT jboolean JNICALL
47 Java_org_simgrid_msg_RngStream_setPackageSeed(JNIEnv *env, jobject jrngstream, jintArray jseed) {
49 if (jseed == nullptr) {
50 jxbt_throw_null(env, xbt_strdup("seed argument is null"));
55 env->GetIntArrayRegion(jseed, 0, 6, buffer);
57 // The C API expects unsigned long which are wider than int on LP64.
58 // We need to convert:
59 unsigned long seed[6];
60 for (int i = 0; i != 6; ++i)
63 int result = RngStream_SetPackageSeed(seed);
64 return result == -1 ? JNI_FALSE : JNI_TRUE;
67 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_resetStart(JNIEnv *env, jobject jrngstream) {
68 RngStream rngstream = jrngstream_to_native(env, jrngstream);
72 RngStream_ResetStartStream(rngstream);
75 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_resetStartSubstream(JNIEnv *env, jobject jrngstream) {
76 RngStream rngstream = jrngstream_to_native(env, jrngstream);
80 RngStream_ResetStartSubstream(rngstream);
83 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_resetNextSubstream(JNIEnv *env, jobject jrngstream) {
84 RngStream rngstream = jrngstream_to_native(env, jrngstream);
88 RngStream_ResetNextSubstream(rngstream);
91 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_setAntithetic(JNIEnv *env, jobject jrngstream, jboolean ja) {
92 RngStream rngstream = jrngstream_to_native(env, jrngstream);
97 RngStream_SetAntithetic(rngstream,-1);
100 RngStream_SetAntithetic(rngstream,0);
104 JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_RngStream_setSeed(JNIEnv *env, jobject jrngstream, jintArray jseed) {
107 env->GetIntArrayRegion(jseed, 0, 6, buffer);
109 RngStream rngstream = jrngstream_to_native(env, jrngstream);
113 // The C API expects unsigned long which are wider than int on LP64.
114 // We need to convert:
115 unsigned long seed[6];
116 for (int i = 0; i != 6; ++i)
119 int result = RngStream_SetSeed(rngstream, seed);
121 return result == -1 ? JNI_FALSE : JNI_TRUE;
124 JNIEXPORT void JNICALL Java_org_simgrid_msg_RngStream_advanceState(JNIEnv *env, jobject jrngstream, jint e, jint g) {
125 RngStream rngstream = jrngstream_to_native(env, jrngstream);
129 RngStream_AdvanceState(rngstream, (long)e, (long)g);
132 JNIEXPORT jdouble JNICALL Java_org_simgrid_msg_RngStream_randU01(JNIEnv *env, jobject jrngstream) {
133 RngStream rngstream = jrngstream_to_native(env, jrngstream);
137 return (jdouble)RngStream_RandU01(rngstream);
140 JNIEXPORT jint JNICALL Java_org_simgrid_msg_RngStream_randInt(JNIEnv *env, jobject jrngstream, jint i, jint j) {
141 RngStream rngstream = jrngstream_to_native(env, jrngstream);
145 return (jint)RngStream_RandInt(rngstream, (int)i, (int)j);