threadinfop.nc

tinyos2.0版本驱动

/*
 * Copyright (c) 2008 Stanford University.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - Neither the name of the Stanford University 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 COPYRIGHT HOLDERS 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 STANFORD
 * UNIVERSITY OR ITS 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.
 */
 
/**
 * @author Kevin Klues <[e-mail]>
 */

generic module ThreadInfoP(uint16_t stack_size, uint8_t thread_id) {
  provides {
    interface Init;
    interface ThreadInfo;
    interface ThreadFunction;
  }
  uses {
    interface Leds;
  }
}
implementation {
  uint8_t stack[stack_size];
  thread_t thread_info;
  
  void run_thread(void* arg) __attribute__((noinline)) {
    signal ThreadFunction.signalThreadRun(arg);
  }
  
  command error_t Init.init() {
    thread_info.next_thread = NULL;
    thread_info.id = thread_id;
    thread_info.init_block = NULL;
    thread_info.stack_ptr = (stack_ptr_t)(STACK_TOP(stack, sizeof(stack)));
    thread_info.state = TOSTHREAD_STATE_INACTIVE;
    thread_info.mutex_count = 0;
    thread_info.start_ptr = run_thread;
    thread_info.start_arg_ptr = NULL;
    thread_info.syscall = NULL;
    return SUCCESS;
  }
  
  async command thread_t* ThreadInfo.get() {
    return &thread_info;
  }
}