~drizzle-trunk/drizzle/development

/* Copyright (c) 2005 PrimeBase Technologies GmbH

 *

 * PrimeBase XT

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

 *

 * 2004-01-03	Paul McCullagh

 *

 * H&G2JCtL

 */

#ifndef __xt_xtutil_h__

#define __xt_xtutil_h__

#include <stddef.h>

#include "xt_defs.h"

#define XT_CHECKSUM_1(sum)		((xtWord1) ((sum) ^ ((sum) >> 24) ^ ((sum) >> 16) ^ ((sum) >> 8)))

#define XT_CHECKSUM_2(sum)		((xtWord2) ((sum) ^ ((sum) >> 16)))

#define XT_CHECKSUM4_8(sum)		((xtWord4) (sum) ^ (xtWord4) ((sum) >> 32))

int		xt_comp_log_pos(xtLogID id1, off_t off1, xtLogID id2, off_t off2);

xtWord8	xt_time_now(void);

void	xt_free_nothing(struct XTThread *self, void *x);

xtWord4	xt_file_name_to_id(char *file_name);

xtBool	xt_time_difference(register xtWord4 now, register xtWord4 then);

xtWord2	xt_get_checksum(xtWord1 *data, size_t len, u_int interval);

xtWord1 xt_get_checksum1(xtWord1 *data, size_t len);

xtWord4 xt_get_checksum4(xtWord1 *data, size_t len);

typedef struct XTDataBuffer {

	size_t			db_size;

	xtWord1			*db_data;

} XTDataBufferRec, *XTDataBufferPtr;

xtBool xt_db_set_size(struct XTThread *self, XTDataBufferPtr db, size_t size);

#define XT_IB_DEFAULT_SIZE			512

typedef struct XTInfoBuffer {

	xtBool			ib_free;

	XTDataBufferRec	ib_db;

	xtWord1			ib_data[XT_IB_DEFAULT_SIZE];

} XTInfoBufferRec, *XTInfoBufferPtr;

xtBool	xt_ib_alloc(struct XTThread *self, XTInfoBufferPtr ib, size_t size);

void	xt_ib_free(struct XTThread *self, XTInfoBufferPtr ib);

typedef struct XTBasicList {

	u_int			bl_item_size;

	u_int			bl_size;

	u_int			bl_count;

	xtWord1			*bl_data;

} XTBasicListRec, *XTBasicListPtr;

xtBool	xt_bl_set_size(struct XTThread *self, XTBasicListPtr wl, size_t size);

xtBool	xt_bl_dup(struct XTThread *self, XTBasicListPtr from_bl, XTBasicListPtr to_bl);

xtBool	xt_bl_append(struct XTThread *self, XTBasicListPtr wl, void *value);

void	*xt_bl_last_item(XTBasicListPtr wl);

void	*xt_bl_item_at(XTBasicListPtr wl, u_int i);

void	xt_bl_free(struct XTThread *self, XTBasicListPtr wl);

typedef struct XTBasicQueue {

	u_int			bq_item_size;

	u_int			bq_max_waste;

	u_int			bq_item_inc;

	u_int			bq_size;

	u_int			bq_front;

	u_int			bq_back;

	xtWord1			*bq_data;

} XTBasicQueueRec, *XTBasicQueuePtr;

xtBool	xt_bq_set_size(struct XTThread *self, XTBasicQueuePtr wq, size_t size);

void	*xt_bq_get(XTBasicQueuePtr wq);

void	xt_bq_next(XTBasicQueuePtr wq);

xtBool	xt_bq_add(struct XTThread *self, XTBasicQueuePtr wl, void *value);

typedef struct XTStringBuffer {

	size_t			sb_size;

	size_t			sb_len;

	char			*sb_cstring;

} XTStringBufferRec, *XTStringBufferPtr;

void	xt_sb_free(struct XTThread *self, XTStringBufferPtr db);

xtBool	xt_sb_set_size(struct XTThread *self, XTStringBufferPtr db, size_t size);

xtBool	xt_sb_concat_len(struct XTThread *self, XTStringBufferPtr dbuf, c_char *str, size_t len);

xtBool	xt_sb_concat(struct XTThread *self, XTStringBufferPtr dbuf, c_char *str);

xtBool	xt_sb_concat_char(struct XTThread *self, XTStringBufferPtr dbuf, int ch);

xtBool	xt_sb_concat_int8(struct XTThread *self, XTStringBufferPtr dbuf, xtInt8 val);

char	*xt_sb_take_cstring(XTStringBufferPtr dbuf);

xtBool	xt_sb_concat_url_len(struct XTThread *self, XTStringBufferPtr dbuf, c_char *str, size_t len);

static inline size_t xt_align_size(size_t size, size_t align)

{

	register size_t diff = size % align;

	if (diff)

		return size + align - diff;

	return size;

}

static inline off_t xt_align_offset(off_t size, size_t align)

{

	register off_t diff = size % (off_t) align;

	if (diff)

		return size + align - diff;

	return size;

}

#endif