osd-contiki/tools/cooja/examples/jni_test/level5/level5.c

69 lines
2.5 KiB
C

/*
* Copyright (c) 2006, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: level5.c,v 1.1 2006/08/21 12:13:10 fros4943 Exp $
*/
#include <jni.h>
#include <stdio.h>
#include <string.h>
int ref_var;
int initialized_counter=1;
int uninitialized_counter;
JNIEXPORT void JNICALL
Java_Level5_doCount(JNIEnv *env, jobject obj)
{
fprintf(stderr, ">> DATA_counter=\t%i\tBSS_counter=\t%i\n", initialized_counter++, uninitialized_counter++);
fflush(stderr);
}
JNIEXPORT jint JNICALL
Java_Level5_getRefAddress(JNIEnv *env, jobject obj)
{
return (jint) &ref_var;
}
JNIEXPORT jbyteArray JNICALL
Java_Level5_getMemory(JNIEnv *env, jobject obj, jint start, jint length)
{
jbyteArray ret=(*env)->NewByteArray(env, length);
(*env)->SetByteArrayRegion(env, ret, 0, (size_t) length, (jbyte *) start);
return (ret);
}
JNIEXPORT void JNICALL
Java_Level5_setMemory(JNIEnv *env, jobject obj, jint start, jint length, jbyteArray mem_arr)
{
jbyte *mem = (*env)->GetByteArrayElements(env, mem_arr, 0);
memcpy((void *) start, mem, length);
(*env)->ReleaseByteArrayElements(env, mem_arr, mem, 0);
}