osd-contiki/tools/cooja/config/contiki_template.c

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2006-09-06 12:37:08 +02:00
/*
* 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.
*
2007-05-21 17:00:13 +02:00
* $Id: contiki_template.c,v 1.3 2007/05/21 15:00:13 fros4943 Exp $
2006-09-06 12:37:08 +02:00
*/
/**
* \defgroup coojacore COOJA Simulator Core
* @{
*/
/**
* \file
* C code template for generating contiki source code files from COOJA
* Simulator. This file should not be compiled directly.
* \author
* Fredrik Osterlind <fros@sics.se>
*/
/*---------------------------------------------------------------------------*/
/**
* \page coojacore COOJA Simulator Core
*
* COOJA Simulator Core ("the Core") represents the entire C code part of COOJA
* Simulator.
* This part shortly consists of simulated sensors and actuators and code for
* communicating with the Java part.
*
* Communication with the Core should always be handled via dedicated classes
* (MoteType), and never directly. MoteType works as an interface giving access
* to variable's values given their name (through CoreComm->Lib?).
*
*/
#include <jni.h>
#include <stdio.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "contiki-lib.h"
#include "contiki-conf.h"
#include "sys/clock.h"
#include "lib/simEnvChange.h"
#include "lib/sensors.h"
#include "sys/etimer.h"
#include "sys/cooja_mt.h"
#include "net/init-net.h"
/* Declare all initialization processes */
[PROCESS_DEFINITIONS]
/* Declare all sensors */
[SENSOR_DEFINITIONS]
/* Declare all simulation interfaces */
[INTERFACE_DEFINITIONS]
/* Create initialization process array */
[PROCESS_ARRAY]
/* Create sensor array */
[SENSOR_ARRAY]
/* Create simulation interfaces array */
[INTERFACE_ARRAY]
/*
* referenceVar is used for comparing absolute and process relative memory.
* (this must not be static due to memory locations)
*/
int referenceVar;
/*
* process_run() infinite loop.
* Is yielded at least once per function call.
*/
static struct cooja_mt_thread process_run_thread;
static void
start_process_run_loop(void *data)
{
while(1)
{
/* Always pretend we have processes left while inside process_run() */
simProcessRunValue = 1;
if (simDoTcpipInput) {
simDoTcpipInput = 0;
tcpip_input();
}
simProcessRunValue = process_run();
// Check if we must stay awake
if (simDontFallAsleep) {
simDontFallAsleep=0;
simProcessRunValue = 1;
}
/* Yield thread when one process_run has completed */
cooja_mt_yield();
}
}
extern unsigned long _end;
/*---------------------------------------------------------------------------*/
/**
* \brief Initialize a mote by starting processes etc.
*
* This function initializes a mote by starting certain
* processes and setting up the environment.
*
* This is a JNI function and should only be called via the
* responsible Java part (MoteType.java).
*/
JNIEXPORT void JNICALL
Java_se_sics_cooja_corecomm_[CLASS_NAME]_init(JNIEnv *env, jobject obj)
{
/* Initialize random generator */
random_init(0);
/* Start process handler */
process_init();
/* Start Contiki processes */
procinit_init();
/* Initialize communication stack */
init_net();
/* Start user applications */
autostart_start((struct process **) autostart_processes);
/* Prepare thread that will do the process_run()-loop */
cooja_mt_start(&process_run_thread, &start_process_run_loop, NULL);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Get a segment from the process memory.
* \param start Start address of segment
* \param length Size of memory segment
* \return Java byte array containing a copy of memory segment.
*
* Fetches a memory segment from the process memory starting at
* (start), with size (length). This function does not perform
* ANY error checking, and the process may crash if addresses are
* not available/readable.
*
* This is a JNI function and should only be called via the
* responsible Java part (MoteType.java).
*/
JNIEXPORT void JNICALL
Java_se_sics_cooja_corecomm_[CLASS_NAME]_getMemory(JNIEnv *env, jobject obj, jint start, jint length, jbyteArray mem_arr)
{
(*env)->SetByteArrayRegion(env, mem_arr, 0, (size_t) length, (jbyte *) start);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Replace a segment of the process memory with given byte array.
* \param start Start address of segment
* \param length Size of memory segment
* \param mem_arr Byte array contaning new memory
*
* Replaces a process memory segment with given byte array.
* This function does not perform ANY error checking, and the
* process may crash if addresses are not available/writable.
*
* This is a JNI function and should only be called via the
* responsible Java part (MoteType.java).
*/
JNIEXPORT void JNICALL
Java_se_sics_cooja_corecomm_[CLASS_NAME]_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);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Let mote execute one "block" of code (tick mote).
*
* Let mote defined by the active contiki processes and current
* process memory execute some program code. This code must not block
* or else this function will never return. A typical contiki
* process will return when it executes PROCESS_WAIT..() statements.
*
* Before the control is left to contiki processes, any messages
* from the Java part are handled. These may for example be
* incoming network data. After the contiki processes return control,
* messages to the Java part are also handled (those which may need
* special attention).
*
* This is a JNI function and should only be called via the
* responsible Java part (MoteType.java).
*/
JNIEXPORT void JNICALL
Java_se_sics_cooja_corecomm_[CLASS_NAME]_tick(JNIEnv *env, jobject obj)
{
/* Let all simulation interfaces act first */
simNoYield = 1;
doActionsBeforeTick();
simNoYield = 0;
/* Check if any e-timers are pending (save result for state decisions) */
if (etimer_pending()) {
/* Poll etimers */
etimer_request_poll();
simEtimerPending = 1;
} else {
simEtimerPending = 0;
}
/* Let Contiki execute one or a part of the process_run()-function via the thread.
This call stores the process_run() return value */
cooja_mt_exec(&process_run_thread);
/* Let all simulation interfaces act before returning to java */
simNoYield = 1;
doActionsAfterTick();
simNoYield = 0;
/* Look for new e-timers */
if (!simEtimerPending && etimer_pending()) {
/* Poll etimers */
etimer_request_poll();
simEtimerPending = 1;
}
/* Save nearest event timer expiration time (0 if no timers) */
simNextExpirationTime = etimer_next_expiration_time();
}
/*---------------------------------------------------------------------------*/
/**
* \brief Get the absolute memory address of a special variable.
* \return Absolute memory address.
*
* Returns the absolute memory address of a special variable
* "referenceVar". By comparing this address with the relative
* address (from the map file) for referenceVar, an runtime offset
* can be calculated.
*
* This is a JNI function and should only be called via the
* responsible Java part (MoteType.java).
*/
JNIEXPORT jint JNICALL
Java_se_sics_cooja_corecomm_[CLASS_NAME]_getReferenceAbsAddr(JNIEnv *env, jobject obj)
{
return (jint) &referenceVar;
}
/** @} */