mailbox.lst

嵌入式系统内核模拟器

C51 COMPILER V6.12  MAILBOX                                                                12/07/2004 17:58:45 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE MAILBOX
OBJECT MODULE PLACED IN .\mailbox.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE ..\..\..\ipc\mailbox.c INCDIR(d:\rs1.12b\) DEBUG OBJECTEXTEND PRINT(.\mailb
                    -ox.lst) OBJECT(.\mailbox.obj) 

stmt level    source

   1          /*
   2          ===============================================================================
   3          | Copyright (C) 2004 RuanHaiShen, All rights reserved.
   4          | SUMMARY: 
   5          |   Mailbox implementation.
   6          |
   7          | DESCRIPTION:
   8          |   See http://www.01s.org for documentation, latest information, license 
   9          |   and contact details.
  10          |   email:[e-mail]
  11          =============================================================================*/
  12          /*===========================================================================*/
  13          #include "arch/arch.h"
  14          #include "inc/queue.h"
  15          #include "inc/kernel.h"
  16          #include "inc/memory.h"
  17          #include "inc/ipc.h"
  18          #include "inc/kapi.h"
  19          
  20          
  21          #if CFG_MBOX_EN > 0 
              err_t mbox_init(mbox_t __p_* mbox)
              {
                  __ASSERT(mbox != NULL);
              
                  mbox->mail  = 0;
                  mbox->avail = false;
                  __queue_init(mbox->waits);
                  return EOK;
              }
              
              err_t mbox_send(mbox_t __p_* mbox, mail_t mail)
              {
                  __ASSERT(mbox != NULL);
              
                  CRITICAL_ENTER;
                  if (!mbox->avail) {
                      mbox->avail = true;
                      mbox->mail  = mail;
                      if (__ipc_resume(&mbox->waits) != NULL_PRIO) {
                          CRITICAL_EXIT;
                          __schedule();
                      } else {
                          CRITICAL_EXIT;
                      }
                      return EOK;
                  } else {
                      CRITICAL_EXIT;
                      return EFULL;
                  }
              }
              
              err_t mbox_receive(mbox_t __p_* mbox, mail_t __p_* pmail)
              {
C51 COMPILER V6.12  MAILBOX                                                                12/07/2004 17:58:45 PAGE 2   

                  __ASSERT(mbox != NULL);
                  
              #if CFG_ARG_CHK > 0
                  if (_sched_lock > 0) {
                      return ELOCK;
                  }
              #else
                  __ASSERT(_sched_lock == 0);
              #endif
              
                  while (true) {
                      CRITICAL_ENTER;
                      if (mbox->avail) {
                          mbox->avail = false;
                          *pmail = mbox->mail;
                          CRITICAL_EXIT;
                          return EOK;
                      }
                      __ipc_block(&mbox->waits, 0);
                      CRITICAL_EXIT;
              
                      __schedule();
                  }
              }
              
              #if CFG_IPC_TIMEOUT_EN > 0
              err_t mbox_timereceive(mbox_t __p_* mbox, mail_t __p_* pmail, tick_t ticks)
              {
                  register u8 current;
              
                  __ASSERT(mbox != NULL);
               
              #if CFG_ARG_CHK > 0
                  if (_sched_lock > 0) {
                      return ELOCK;
                  }
              #else
                  __ASSERT(_sched_lock == 0);
              #endif
              
                  while (true) {
                      CRITICAL_ENTER;
                      if (mbox->avail) {
                          mbox->avail = false;
                          *pmail = mbox->mail;
                          CRITICAL_EXIT;
                          return EOK;
                      }
                      __ipc_block(&mbox->waits, ticks);
                      CRITICAL_EXIT;
              
                      __schedule();
              
                      CRITICAL_ENTER;
                      current = _current_prio;
                      if (_tasks[current].state & STATE_BLOCKED) {
                          __ipc_timeout(&mbox->waits);
                          CRITICAL_EXIT;
                          return ETIMEOUT;
                      }
                      __adjust_delay(current, ticks);
                      CRITICAL_EXIT;
C51 COMPILER V6.12  MAILBOX                                                                12/07/2004 17:58:45 PAGE 3   

                  }
              }
              #endif
              
              err_t mbox_flush(mbox_t __p_* mbox)
              {
                  __ASSERT(mbox != NULL);
              
                  CRITICAL_ENTER;
                  mbox->avail = false;
                  mbox->mail  = 0;
                  CRITICAL_EXIT;
                  return EOK;
              }
              
              err_t mbox_destroy(mbox_t __p_* mbox)
              {
                  __ASSERT(mbox != NULL);
              
                  CRITICAL_ENTER;
                  if (__ipc_resume(&mbox->waits) != NULL_PRIO) {
                      CRITICAL_EXIT;
                      return EEXIST;
                  }
                  CRITICAL_EXIT;
              
                  return EOK;
              }
              #endif
 146          
 147          
 148          /*===========================================================================*/
 149          
 150          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =   ----    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)