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#ifndef __SGE_BITFIELD_H
#define __SGE_BITFIELD_H
/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2001 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include <stdio.h>
#include "sge.h"
#include "basis_types.h"
/****** uti/bitfield/BIT_MANIPULATION_MAKROS() ********************************
* NAME
* ISSET(),VALID(),SETBIT(),CLEARBIT() - Bit manipulation makros
*
* SYNOPSIS
* #define ISSET(a,b) ((a&b)==b)
* #define VALID(a,b) ((a|b)==b)
* #define SETBIT(a,b) (b=(a)|b);
* #define CLEARBIT(a,b) (b &= (~(a)));
*
* FUNCTION
* Makros to get/set/clear bits in native variables.
*
* INPUTS
* int,long,u_long32... a - Bitmask
* int,long,u_long32... b - Variable
*
* RESULT
* b will be modified
*
* NOTE
* These Makros can't be used in combination with the bitfield type.
*******************************************************************************/
#define ISSET(a,b) ((a&b)==b)
#define VALID(a,b) ((a|b)==b)
#define SETBIT(a,b) (b=(a)|b);
#define CLEARBIT(a,b) (b &= (~(a)));
typedef struct {
unsigned int size;
union {
char fix[sizeof(char *)]; /* fixed size buffer for small bitfields */
char *dyn; /* dynamic size buffer for large bitfields */
} bf;
} bitfield;
/* fixme: should any of this be inline? */
bitfield *
sge_bitfield_new(unsigned int size);
bitfield *
sge_bitfield_free(bitfield *bf);
bool
sge_bitfield_init(bitfield *bf, unsigned int size);
bool
sge_bitfield_free_data(bitfield *bf);
bool
sge_bitfield_copy(const bitfield *source, bitfield *target);
bool
sge_bitfield_bitwise_copy(const bitfield *source, bitfield *target);
bool
sge_bitfield_set(bitfield *bf, unsigned int bit);
bool
sge_bitfield_get(const bitfield *bf, unsigned int bit) __attribute__ ((__pure__));
bool
sge_bitfield_clear(bitfield *bf, unsigned int bit);
bool
sge_bitfield_reset(bitfield *source);
bool
sge_bitfield_changed(const bitfield *source) __attribute__ ((__pure__));
void
sge_bitfield_print(const bitfield *bf, FILE *fd);
#define fixed_bits (sizeof(char *) * 8)
#define sge_bitfield_get_size(bf) ((bf)->size)
#define sge_bitfield_get_size_bytes(size) ((size) / 8 + (((size) % 8) > 0 ? 1 : 0))
#define sge_bitfield_get_buffer(source) ((source)->size <= fixed_bits) ? (source)->bf.fix : (source)->bf.dyn
#endif /* __SGE_BITFIELD_H */
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