fns_heap.h

用于嵌入式系统的TCP/IP协议栈及若干服务

/*
*            Copyright (c) 1998-2001 by NETsilicon Inc.
*
*  This software is copyrighted by and is the sole property of
*  NETsilicon.  All rights, title, ownership, or other interests
*  in the software remain the property of NETsilicon.  This
*  software may only be used in accordance with the corresponding
*  license agreement.  Any unauthorized use, duplication, transmission,
*  distribution, or disclosure of this software is expressly forbidden.
*
*  This Copyright notice may not be removed or modified without prior
*  written consent of NETsilicon.
*
*  NETsilicon, reserves the right to modify this software
*  without notice.
*
*  NETsilicon
*  411 Waverley Oaks Road                  USA 781.647.1234
*  Suite 227                               http://www.netsilicon.com
*  Waltham, MA 02452                       [e-mail]
*
*************************************************************************
*  $Name: Fusion 6.52 Fusion 6.51 $
*  $Date: 2001/09/20 10:19:18 $
*  $Source: M:/psisrc/stack/incl/rcs/fns_heap.h $
*  $Revision: 1.6 $
**************************************************************************
*                         - Revision Log -                              
* Who   When        Why
*
* FND   10/09/01    OS_MALLOC and OS_FREE prototypes must be conditional.
**************************************************************************
*  File Description:  Heap / Memory Allocation defines and prototypes
*
**************************************************************************/

#ifndef _FNS_HEAP_
#define _FNS_HEAP_

/*
 * Prototypes (heap.c)
 */
import  void *  h_alloc(i32 len, int * errp, boolean canblock);
import  void *  h_calloc(i32 len, int * errp, boolean canblock);
import  void    h_free(void * ip);
import  void    h_init(i32 * hptr, u32 hsize);
import  int     h_tailtrim(void * headp,  void * tailp);

/*
 * Memory Types
 */
#define FNS_STATIC_HEAP     1
#define FNS_SESSION_HEAP    2
#define FNS_PACKET_HEAP     3

#ifndef OS_MALLOC
void* OS_MALLOC(i32 S, i32 T);
#endif

#ifndef OS_FREE
void OS_FREE(void* P);
#endif

#ifdef OS_MEM_TRIM
int OS_MEM_TRIM(void* S, void* E);
#endif

#ifdef os_hinit
void os_hinit(u32* size, i32** ptr);
#endif

#ifdef USE_FUSION_HEAP

#define OS_MALLOC(S,T)      h_malloc(S)
#define OS_FREE(P)          h_mfree(P)
#define OS_MEM_TRIM(S,E)    h_mttrim(S,E)
#define OS_MALLOC_INIT      nc_hinit()
#define OS_IS_MEM_LOW       h_mlow()
#define OS_HEAP_SPACE       h_avail

#ifndef H_LOW_WATER
#define H_LOW_WATER         2048
#endif

extern  u32 FNS_HEAP_SPACE;
void*   h_malloc(i32 S);
void    h_mfree(void* P);
int     h_mttrim(void* S, void* E);
void    nc_hinit(void);
boolean h_mlow(void);

#endif /* USE_FUSION_HEAP */


#endif /*_FNS_HEAP_*/