178 lines
6.7 KiB
C
178 lines
6.7 KiB
C
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: mantis_template.c,v 1.1 2006/11/09 19:32:53 fros4943 Exp $
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*/
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/**
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* \file
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* C code template for generating Mantis source code files from COOJA
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* Simulator. This file should not be compiled directly.
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* \author
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* Fredrik Osterlind <fros@sics.se>
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*/
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#include <jni.h>
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#include <stdio.h>
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#include <string.h>
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#include <pthread.h>
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#include "mos.h"
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#include "sem.h"
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#include "msched.h"
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extern int main(); /* in mantis/src/mos/sys/main.c */
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extern uint32_t cooja_time; /* in mantis/src/mos/sys/main.c */
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extern pthread_cond_t cooja_cv; /* in mantis/src/mos/sys/main.c */
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extern mos_thread_t threads[MAX_THREADS]; /* in mantis/src/mos/sys/main.c */
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/*
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* referenceVar is used for comparing absolute and process relative memory.
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* (this must not be static due to memory locations)
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*/
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int referenceVar;
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int dataVar = 1;
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int i;
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Initialize a mote by starting processes etc.
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*
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* This function initializes a mote by starting certain
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* processes and setting up the environment.
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*
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* This is a JNI function and should only be called via the
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* responsible Java part (MoteType.java).
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*/
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JNIEXPORT void JNICALL
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Java_se_sics_cooja_corecomm_[CLASS_NAME]_init(JNIEnv *env, jobject obj)
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{
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main();
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Get a segment from the process memory.
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* \param start Start address of segment
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* \param length Size of memory segment
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* \return Java byte array containing a copy of memory segment.
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*
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* Fetches a memory segment from the process memory starting at
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* (start), with size (length). This function does not perform
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* ANY error checking, and the process may crash if addresses are
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* not available/readable.
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*
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* This is a JNI function and should only be called via the
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* responsible Java part (MoteType.java).
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*/
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JNIEXPORT void JNICALL
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Java_se_sics_cooja_corecomm_[CLASS_NAME]_getMemory(JNIEnv *env, jobject obj, jint start, jint length, jbyteArray mem_arr)
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{
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(*env)->SetByteArrayRegion(env, mem_arr, 0, (size_t) length, (jbyte *) start);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Replace a segment of the process memory with given byte array.
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* \param start Start address of segment
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* \param length Size of memory segment
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* \param mem_arr Byte array contaning new memory
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*
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* Replaces a process memory segment with given byte array.
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* This function does not perform ANY error checking, and the
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* process may crash if addresses are not available/writable.
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*
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* This is a JNI function and should only be called via the
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* responsible Java part (MoteType.java).
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*/
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JNIEXPORT void JNICALL
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Java_se_sics_cooja_corecomm_[CLASS_NAME]_setMemory(JNIEnv *env, jobject obj, jint start, jint length, jbyteArray mem_arr)
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{
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jbyte *mem = (*env)->GetByteArrayElements(env, mem_arr, 0);
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memcpy((void *) start, mem, length);
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(*env)->ReleaseByteArrayElements(env, mem_arr, mem, 0);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Let mote execute one "block" of code (tick mote).
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*
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* This is a JNI function and should only be called via the
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* responsible Java part (MoteType.java).
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*/
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JNIEXPORT void JNICALL
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Java_se_sics_cooja_corecomm_[CLASS_NAME]_tick(JNIEnv *env, jobject obj)
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{
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int readyexist = 0;
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/* Ugly hack, setting all ready threads to BLOCKED just to discover which ones wake up */
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for(i=0; i<MAX_THREADS; i++) {
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if (threads[i].state == READY) {
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threads[i].state = BLOCKED;
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}
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}
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cooja_time += 1; // increase time
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//printf("CORE> tick, time is now %i\n", cooja_time);
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/* Signal all threads to start working again */
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for(i=0; i<MAX_THREADS; i++) {
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if (threads[i].state == BLOCKED) {
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mos_thread_resume(&threads[i]);
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}
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}
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/* Wait until all threads are blocked again. ??!?!!
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* For now we just assume all threads will be done within 1ms. */
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do {
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readyexist=0;
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for(i=0; i<MAX_THREADS; i++) {
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if (threads[i].state == READY) {
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readyexist = 1;
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//printf("waiting until thread finished...: %p\n", &threads[i]);
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//fflush(stdout);
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usleep(1);
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}
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}
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} while (readyexist);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Get the absolute memory address of a special variable.
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* \return Absolute memory address.
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*
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* Returns the absolute memory address of a special variable
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* "referenceVar". By comparing this address with the relative
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* address (from the map file) for referenceVar, an runtime offset
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* can be calculated.
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*
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* This is a JNI function and should only be called via the
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* responsible Java part (MoteType.java).
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*/
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JNIEXPORT jint JNICALL
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Java_se_sics_cooja_corecomm_[CLASS_NAME]_getReferenceAbsAddr(JNIEnv *env, jobject obj)
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{
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return (jint) &referenceVar;
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}
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