source/libs/cairo/cairo-src/src/cairo-mempool-private.h

   1 /* Cairo - a vector graphics library with display and print output
   2  *
   3  * Copyright © 2007 Chris Wilson
   4  * Copyright © 2009 Intel Corporation
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it either under the terms of the GNU Lesser General Public
   8  * License version 2.1 as published by the Free Software Foundation
   9  * (the "LGPL") or, at your option, under the terms of the Mozilla
  10  * Public License Version 1.1 (the "MPL"). If you do not alter this
  11  * notice, a recipient may use your version of this file under either
  12  * the MPL or the LGPL.
  13  *
  14  * You should have received a copy of the LGPL along with this library
  15  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  17  * You should have received a copy of the MPL along with this library
  18  * in the file COPYING-MPL-1.1
  19  *
  20  * The contents of this file are subject to the Mozilla Public License
  21  * Version 1.1 (the "License"); you may not use this file except in
  22  * compliance with the License. You may obtain a copy of the License at
  23  * http://www.mozilla.org/MPL/
  24  *
  25  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  26  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  27  * the specific language governing rights and limitations.
  28  *
  29  * The Original Code is the cairo graphics library.
  30  *
  31  * The Initial Developer of the Original Code is Red Hat, Inc.
  32  *
  33  * Contributors(s):
  34  *      Chris Wilson <chris@chris-wilson.co.uk>
  35  */
  36
  37 #ifndef CAIRO_MEMPOOL_PRIVATE_H
  38 #define CAIRO_MEMPOOL_PRIVATE_H
  39
  40 #include "cairo-compiler-private.h"
  41 #include "cairo-error-private.h"
  42
  43 #include <stddef.h> /* for size_t */
  44
  45 CAIRO_BEGIN_DECLS
  46
  47 typedef struct _cairo_mempool cairo_mempool_t;
  48
  49 struct _cairo_mempool {
  50     char *base;
  51     struct _cairo_memblock {
  52         int bits;
  53         cairo_list_t link;
  54     } *blocks;
  55     cairo_list_t free[32];
  56     unsigned char *map;
  57
  58     unsigned int num_blocks;
  59     int min_bits;     /* Minimum block size is 1 << min_bits */
  60     int num_sizes;
  61     int max_free_bits;
  62
  63     size_t free_bytes;
  64     size_t max_bytes;
  65 };
  66
  67 cairo_private cairo_status_t
  68 _cairo_mempool_init (cairo_mempool_t *pool,
  69                      void *base,
  70                      size_t bytes,
  71                      int min_bits,
  72                      int num_sizes);
  73
  74 cairo_private void *
  75 _cairo_mempool_alloc (cairo_mempool_t *pi, size_t bytes);
  76
  77 cairo_private void
  78 _cairo_mempool_free (cairo_mempool_t *pi, void *storage);
  79
  80 cairo_private void
  81 _cairo_mempool_fini (cairo_mempool_t *pool);
  82
  83 CAIRO_END_DECLS
  84
  85 #endif /* CAIRO_MEMPOOL_PRIVATE_H */