63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*
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* IRC - Internet Relay Chat, include/dbuf.h
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* Copyright (C) 1990 Markku Savela
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file
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* @brief Interfaces and declarations for dealing with data buffers.
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* @version $Id: dbuf.h 1216 2004-10-05 00:51:56Z entrope $
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*/
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#ifndef INCLUDED_dbuf_h
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#define INCLUDED_dbuf_h
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#ifndef INCLUDED_sys_types_h
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#include <sys/types.h> /* size_t */
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#define INCLUDED_sys_types_h
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#endif
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/*
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* These two globals should be considered read only
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*/
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extern int DBufAllocCount;
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extern int DBufUsedCount;
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struct DBufBuffer;
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/** Queue of data chunks. */
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struct DBuf {
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unsigned int length; /**< Current number of bytes stored */
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struct DBufBuffer *head; /**< First data buffer, if length > 0 */
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struct DBufBuffer *tail; /**< Last data buffer, if length > 0 */
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};
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/** Return number of bytes in a DBuf. */
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#define DBufLength(dyn) ((dyn)->length)
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/** Release the entire content of a DBuf. */
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#define DBufClear(dyn) dbuf_delete((dyn), DBufLength(dyn))
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/*
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* Prototypes
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*/
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extern void dbuf_delete(struct DBuf *dyn, unsigned int length);
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extern int dbuf_put(struct DBuf *dyn, const char *buf, unsigned int length);
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extern const char *dbuf_map(const struct DBuf *dyn, unsigned int *length);
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extern unsigned int dbuf_get(struct DBuf *dyn, char *buf, unsigned int length);
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extern unsigned int dbuf_getmsg(struct DBuf *dyn, char *buf, unsigned int length);
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extern void dbuf_count_memory(size_t *allocated, size_t *used);
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#endif /* INCLUDED_dbuf_h */
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