shmem.c

Example of Shared Memory usage.

/*
 * Copyright (C) 2005 BLADOX, s.r.o.  All rights reserved.
 * 
 * This file is part of an example program for Turbo. This example
 * program may be used, distributed and modified without limitation.
 *
 */

#include <config.h>
#include <turbo/turbo.h>

#include <stdlib.h>

#define MY_SHMEM_KEY    0x44

u8 PROGMEM t_Foo_en[] = "Shared memory";
u8 PROGMEM t_Value[] = "Value: ";

typedef struct _sh_mem
{
  u8 some_value;
}
Shared_memory;

Shared_memory *shared_memory;

void action_menu (void *data)
{
  u8 *r = buf_B ();

  dbsp ("SHMEM ");
  dbih (shared_memory);
  dbc ('\n');

  r = sprints (r, t_Value);
  r = sprinti (r, shared_memory->some_value);
  r = sprintc (r, '\0');

  display_text_raw (buf_B (), Q_DISPLAY_TEXT_USER_CLEAR);
  shared_memory->some_value++;
}

void turbo_handler (u8 action, void *data)
{
  switch (action)
  {
    case ACTION_APP_INIT:
      shared_memory = shmem_key (MY_SHMEM_KEY);
      dbsp ("INIT SHMEM ");
      dbih (shared_memory);
      dbc ('\n');
      if (shared_memory == NULL)
      {
        shared_memory = malloc (sizeof (Shared_memory));
        shmem_reg_key (MY_SHMEM_KEY, shared_memory);
        shared_memory->some_value = 0x00;
        dbsp ("SHMEM ");
        dbih (shared_memory);
        dbc ('\n');
      }
      break;
    case ACTION_INSERT_MENU:
      insert_menu (t_Foo_en);
      break;
    case ACTION_MENU_SELECTION:
      stk_thread (action_menu, data);
      break;
    default:
      break;
  }
}