154 lines
3.7 KiB
C
154 lines
3.7 KiB
C
/*
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* Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/* This code is in the public domain.
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** Version: 1.1 Author: Walt Karas
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*/
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/* External header file for Heap Memory Manager. See documentation in
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** heapmm.html.
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*/
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#undef HMM_PROCESS
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/* Include once per configuration in a particular translation unit. */
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#ifndef HMM_CNFG_NUM
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/* Default configuration. */
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#ifndef HMM_INC_CNFG_DFLT
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#define HMM_INC_CNFG_DFLT
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#define HMM_PROCESS
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#endif
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#elif HMM_CNFG_NUM == 0
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/* Test configuration. */
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#ifndef HMM_INC_CNFG_0
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#define HMM_INC_CNFG_0
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#define HMM_PROCESS
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#endif
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#elif HMM_CNFG_NUM == 1
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#ifndef HMM_INC_CNFG_1
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#define HMM_INC_CNFG_1
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#define HMM_PROCESS
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#endif
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#elif HMM_CNFG_NUM == 2
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#ifndef HMM_INC_CNFG_2
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#define HMM_INC_CNFG_2
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#define HMM_PROCESS
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#endif
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#elif HMM_CNFG_NUM == 3
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#ifndef HMM_INC_CNFG_3
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#define HMM_INC_CNFG_3
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#define HMM_PROCESS
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#endif
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#elif HMM_CNFG_NUM == 4
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#ifndef HMM_INC_CNFG_4
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#define HMM_INC_CNFG_4
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#define HMM_PROCESS
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#endif
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#elif HMM_CNFG_NUM == 5
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#ifndef HMM_INC_CNFG_5
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#define HMM_INC_CNFG_5
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#define HMM_PROCESS
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#endif
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#endif
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#ifdef HMM_PROCESS
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#include "hmm_cnfg.h"
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/* Heap descriptor. */
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typedef struct HMM_UNIQUE(structure)
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{
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/* private: */
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/* Pointer to (payload of) root node in AVL tree. This field should
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** really be the AVL tree descriptor (type avl_avl). But (in the
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** instantiation of the AVL tree generic package used in package) the
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** AVL tree descriptor simply contains a pointer to the root. So,
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** whenever a pointer to the AVL tree descriptor is needed, I use the
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** cast:
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**
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** (avl_avl *) &(heap_desc->avl_tree_root)
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**
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** (where heap_desc is a pointer to a heap descriptor). This trick
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** allows me to avoid including cavl_if.h in this external header. */
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void *avl_tree_root;
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/* Pointer to first byte of last block freed, after any coalescing. */
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void *last_freed;
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/* public: */
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HMM_UNIQUE(size_bau) num_baus_can_shrink;
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void *end_of_shrinkable_chunk;
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}
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HMM_UNIQUE(descriptor);
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/* Prototypes for externally-callable functions. */
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void HMM_UNIQUE(init)(HMM_UNIQUE(descriptor) *desc);
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void *HMM_UNIQUE(alloc)(
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HMM_UNIQUE(descriptor) *desc, HMM_UNIQUE(size_aau) num_addr_align_units);
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/* NOT YET IMPLEMENTED */
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void *HMM_UNIQUE(greedy_alloc)(
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HMM_UNIQUE(descriptor) *desc, HMM_UNIQUE(size_aau) needed_addr_align_units,
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HMM_UNIQUE(size_aau) coveted_addr_align_units);
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int HMM_UNIQUE(resize)(
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HMM_UNIQUE(descriptor) *desc, void *mem,
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HMM_UNIQUE(size_aau) num_addr_align_units);
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/* NOT YET IMPLEMENTED */
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int HMM_UNIQUE(greedy_resize)(
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HMM_UNIQUE(descriptor) *desc, void *mem,
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HMM_UNIQUE(size_aau) needed_addr_align_units,
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HMM_UNIQUE(size_aau) coveted_addr_align_units);
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void HMM_UNIQUE(free)(HMM_UNIQUE(descriptor) *desc, void *mem);
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HMM_UNIQUE(size_aau) HMM_UNIQUE(true_size)(void *mem);
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HMM_UNIQUE(size_aau) HMM_UNIQUE(largest_available)(
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HMM_UNIQUE(descriptor) *desc);
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void HMM_UNIQUE(new_chunk)(
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HMM_UNIQUE(descriptor) *desc, void *start_of_chunk,
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HMM_UNIQUE(size_bau) num_block_align_units);
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void HMM_UNIQUE(grow_chunk)(
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HMM_UNIQUE(descriptor) *desc, void *end_of_chunk,
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HMM_UNIQUE(size_bau) num_block_align_units);
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/* NOT YET IMPLEMENTED */
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void HMM_UNIQUE(shrink_chunk)(
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HMM_UNIQUE(descriptor) *desc,
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HMM_UNIQUE(size_bau) num_block_align_units);
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#endif /* defined HMM_PROCESS */
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