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Viewing changes to openpgm/pgm/include/impl/queue.h

  • Committer: Bazaar Package Importer
  • Author(s): Gabriel de Perthuis
  • Date: 2011-04-07 16:48:52 UTC
  • Revision ID: james.westby@ubuntu.com-20110407164852-8uamem42ojeptj6l
Tags: upstream-5.1.116~dfsg
Import upstream version 5.1.116~dfsg

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openpgm/pgm/include/impl/queue.h
 
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/* vim:ts=8:sts=8:sw=4:noai:noexpandtab
 
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 *
 
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 * portable double-ended queue.
 
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 *
 
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 * Copyright (c) 2010 Miru Limited.
 
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 *
 
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 * This library is free software; you can redistribute it and/or
 
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 * modify it under the terms of the GNU Lesser General Public
 
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 * License as published by the Free Software Foundation; either
 
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 * version 2.1 of the License, or (at your option) any later version.
 
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 *
 
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 * This library 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 GNU
 
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 * Lesser General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU Lesser General Public
 
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 * License along with this library; if not, write to the Free Software
 
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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 */
 
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#if !defined (__PGM_IMPL_FRAMEWORK_H_INSIDE__) && !defined (PGM_COMPILATION)
 
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#       error "Only <framework.h> can be included directly."
 
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#endif
 
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
 
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#       pragma once
 
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#endif
 
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#ifndef __PGM_IMPL_QUEUE_H__
 
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#define __PGM_IMPL_QUEUE_H__
 
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typedef struct pgm_queue_t pgm_queue_t;
 
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#include <pgm/types.h>
 
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#include <pgm/list.h>
 
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PGM_BEGIN_DECLS
 
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struct pgm_queue_t
 
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{
 
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        pgm_list_t*     head;           /* head & tail equal on 1 element */
 
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        pgm_list_t*     tail;
 
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        unsigned        length;
 
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};
 
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PGM_GNUC_INTERNAL bool pgm_queue_is_empty (const pgm_queue_t*const) PGM_GNUC_WARN_UNUSED_RESULT;
 
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PGM_GNUC_INTERNAL void pgm_queue_push_head_link (pgm_queue_t*restrict, pgm_list_t*restrict);
 
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PGM_GNUC_INTERNAL pgm_list_t* pgm_queue_pop_tail_link (pgm_queue_t*);
 
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PGM_GNUC_INTERNAL pgm_list_t* pgm_queue_peek_tail_link (pgm_queue_t*) PGM_GNUC_WARN_UNUSED_RESULT;
 
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PGM_GNUC_INTERNAL void pgm_queue_unlink (pgm_queue_t*restrict, pgm_list_t*restrict);
 
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PGM_END_DECLS
 
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#endif /* __PGM_IMPL_QUEUE_H__ */