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  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 */
  86.