source/libvpx/vpx_mem/memory_manager/hmm_grow.c - Issue 1124333011: libvpx: Pull from upstream

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Side by Side Diff: source/libvpx/vpx_mem/memory_manager/hmm_grow.c

Issue 1124333011: libvpx: Pull from upstream (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libvpx.git@master

Patch Set: only update to last nights LKGR Created 5 years, 7 months ago

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1 /*

2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.

3 *

4 * Use of this source code is governed by a BSD-style license

5 * that can be found in the LICENSE file in the root of the source

6 * tree. An additional intellectual property rights grant can be found

7 * in the file PATENTS. All contributing project authors may

8 * be found in the AUTHORS file in the root of the source tree.

9 */

10

11

12 /* This code is in the public domain.

13 ** Version: 1.1 Author: Walt Karas

14 */

15

16 #include "hmm_intrnl.h"

17

18 void U(grow_chunk)(U(descriptor) desc, void end, U(size_bau) n_baus) {

19 #undef HEAD_PTR

20 #define HEAD_PTR ((head_record *) end)

21

22 end = BAUS_BACKWARD(end, DUMMY_END_BLOCK_BAUS);

23

24 #ifdef HMM_AUDIT_FAIL

25

26 if (HEAD_PTR->block_size != 0)

27 /* Chunk does not have valid dummy end block. */

28 HMM_AUDIT_FAIL

29

30 #endif

31

32 /* Create a new block that absorbs the old dummy end block. */

33 HEAD_PTR->block_size = n_baus;

34

35 /* Set up the new dummy end block. */

36 {

37 head_record dummy = (head_record ) BAUS_FORWARD(end, n_baus);

38 dummy->previous_block_size = n_baus;

39 dummy->block_size = 0;

40 }

41

42 /* Simply free the new block, allowing it to coalesce with any

43 ** free block at that was the last block in the chunk prior to

44 ** growth.

45 */

46 U(free)(desc, HEAD_TO_PTR_REC(end));

47

48 #undef HEAD_PTR

49 }

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