text: /*
   * Copyright (c) 2001-2004 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. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission. 
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
   *
   * This file is part of the lwIP TCP/IP stack.
   * 
   * Author: Adam Dunkels <adam@sics.se>
   *
   */
  
  #ifndef __LWIP_MEMP_H__
  #define __LWIP_MEMP_H__
  
  #include "lwip/opt.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /* Create the list of all memory pools managed by memp. MEMP_MAX represents a NULL pool at the end */
  typedef enum {
  #define LWIP_MEMPOOL(name,num,size,desc)  MEMP_##name,
  #include "lwip/memp_std.h"
    MEMP_MAX
  } memp_t;
  
  #if MEM_USE_POOLS
  /* Use a helper type to get the start and end of the user "memory pools" for mem_malloc */
  typedef enum {
      /* Get the first (via:
         MEMP_POOL_HELPER_START = ((u8_t) 1*MEMP_POOL_A + 0*MEMP_POOL_B + 0*MEMP_POOL_C + 0)*/
      MEMP_POOL_HELPER_FIRST = ((u8_t)
  #define LWIP_MEMPOOL(name,num,size,desc)
  #define LWIP_MALLOC_MEMPOOL_START 1
  #define LWIP_MALLOC_MEMPOOL(num, size) * MEMP_POOL_##size + 0
  #define LWIP_MALLOC_MEMPOOL_END
  #include "lwip/memp_std.h"
      ) ,
      /* Get the last (via:
         MEMP_POOL_HELPER_END = ((u8_t) 0 + MEMP_POOL_A*0 + MEMP_POOL_B*0 + MEMP_POOL_C*1) */
      MEMP_POOL_HELPER_LAST = ((u8_t)
  #define LWIP_MEMPOOL(name,num,size,desc)
  #define LWIP_MALLOC_MEMPOOL_START
  #define LWIP_MALLOC_MEMPOOL(num, size) 0 + MEMP_POOL_##size *
  #define LWIP_MALLOC_MEMPOOL_END 1
  #include "lwip/memp_std.h"
      )
  } memp_pool_helper_t;
  
  /* The actual start and stop values are here (cast them over)
     We use this helper type and these defines so we can avoid using const memp_t values */
  #define MEMP_POOL_FIRST ((memp_t) MEMP_POOL_HELPER_FIRST)
  #define MEMP_POOL_LAST   ((memp_t) MEMP_POOL_HELPER_LAST)
  #endif /* MEM_USE_POOLS */
  
  #if MEMP_MEM_MALLOC || MEM_USE_POOLS
  extern const u32_t memp_sizes[MEMP_MAX];
  #endif /* MEMP_MEM_MALLOC || MEM_USE_POOLS */
  
  #if MEMP_MEM_MALLOC
  
  #include "mem.h"
  
  #define memp_init()
  #define memp_malloc(type)     mem_malloc(memp_sizes[type])
  #define memp_free(type, mem)  mem_free(mem)
  
  #else /* MEMP_MEM_MALLOC */
  
  #if MEM_USE_POOLS
  /** This structure is used to save the pool one element came from. */
  struct memp_malloc_helper
  {
     memp_t poolnr;
  };
  #endif /* MEM_USE_POOLS */
  
  void  memp_init(void);
  
  #if MEMP_OVERFLOW_CHECK
  void *memp_malloc_fn(memp_t type, const char* file, const int line);
  #define memp_malloc(t) memp_malloc_fn((t), __FILE__, __LINE__)
  #else
  void *memp_malloc(memp_t type);
  #endif
  void  memp_free(memp_t type, void *mem);
  
  #endif /* MEMP_MEM_MALLOC */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __LWIP_MEMP_H__ */
  