/* -*-  Mode:C; c-basic-offset:4; tab-width:4 -*-
 ****************************************************************************
 * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
 ****************************************************************************
 *
 *        File: lib.h
 *      Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
 *     Changes: 
 *              
 *        Date: Aug 2003
 * 
 * Environment: Xen Minimal OS
 * Description: Random useful library functions, contains some freebsd stuff
 *
 ****************************************************************************
 * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $
 ****************************************************************************
 *
 *-
 * Copyright (c) 1991, 1993
 *      The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the 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 REGENTS 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 THE REGENTS OR 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.
 *
 *      @(#)stdarg.h    8.1 (Berkeley) 6/10/93
 * $FreeBSD: src/sys/i386/include/stdarg.h,v 1.10 1999/08/28 00:44:26 peter Exp $
 */

#ifndef _LIB_H_
#define _LIB_H_


/* variadic function support */
typedef char *va_list;
#define __va_size(type) \
        (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
#ifdef __GNUC__
#define va_start(ap, last) \
        ((ap) = (va_list)__builtin_next_arg(last))
#else
#define va_start(ap, last) \
        ((ap) = (va_list)&(last) + __va_size(last))
#endif
#define va_arg(ap, type) \
        (*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
#define va_end(ap)


/* printing */
#define printk  printf
#define kprintf printf
int printf(const char *fmt, ...);
int vprintf(const char *fmt, va_list ap);
int sprintf(char *buf, const char *cfmt, ...);
int vsprintf(char *buf, const char *cfmt, va_list ap);

/* string and memory manipulation */
int    memcmp(const void *cs, const void *ct, size_t count);
void  *memcpy(void *dest, const void *src, size_t count);
int    strncmp(const char *cs, const char *ct, size_t count);
int    strcmp(const char *cs, const char *ct);
char  *strcpy(char *dest, const char *src);
char  *strncpy(char *dest, const char *src, size_t count);
void  *memset(void *s,int c, size_t count);
size_t strnlen(const char *s, size_t count);
size_t strlen(const char *s);
char  *strchr(const char *s, int c);
char  *strstr(const char *s1, const char *s2);


/* dlmalloc functions */
struct mallinfo {
  int arena;    /* non-mmapped space allocated from system */
  int ordblks;  /* number of free chunks */
  int smblks;   /* number of fastbin blocks */
  int hblks;    /* number of mmapped regions */
  int hblkhd;   /* space in mmapped regions */
  int usmblks;  /* maximum total allocated space */
  int fsmblks;  /* space available in freed fastbin blocks */
  int uordblks; /* total allocated space */
  int fordblks; /* total free space */
  int keepcost; /* top-most, releasable (via malloc_trim) space */
};

void *malloc(size_t n);
void *calloc(size_t n_elements, size_t element_size);
void  free(void* p);
void *realloc(void* p, size_t n);
void *memalign(size_t alignment, size_t n);
void *valloc(size_t n);
struct mallinfo mallinfo();
int  mallopt(int parameter_number, int parameter_value);

void **independent_calloc(size_t n_elements, size_t size, void* chunks[]);
void **independent_comalloc(size_t n_elements, size_t sizes[], void* chunks[]);
void *pvalloc(size_t n);
void cfree(void* p);
int malloc_trim(size_t pad);
size_t malloc_usable_size(void* p);
void malloc_stats();


#endif /* _LIB_H_ */