The Tor Browser: media/libvpx/vpx_mem/include/vpx_mem

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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  */

    12 #ifndef __VPX_MEM_INTRNL_H__

    13 #define __VPX_MEM_INTRNL_H__

    14 #include "./vpx_config.h"

    16 #ifndef CONFIG_MEM_MANAGER

    17 # if defined(VXWORKS)

    18 #  define CONFIG_MEM_MANAGER  1 /*include heap manager functionality,*/

    19 /*default: enabled on vxworks*/

    20 # else

    21 #  define CONFIG_MEM_MANAGER  0 /*include heap manager functionality*/

    22 # endif

    23 #endif /*CONFIG_MEM_MANAGER*/

    25 #ifndef CONFIG_MEM_TRACKER

    26 # define CONFIG_MEM_TRACKER     1 /*include xvpx_* calls in the lib*/

    27 #endif

    29 #ifndef CONFIG_MEM_CHECKS

    30 # define CONFIG_MEM_CHECKS      0 /*include some basic safety checks in

    31 vpx_memcpy, _memset, and _memmove*/

    32 #endif

    34 #ifndef USE_GLOBAL_FUNCTION_POINTERS

    35 # define USE_GLOBAL_FUNCTION_POINTERS   0  /*use function pointers instead of compiled functions.*/

    36 #endif

    38 #if CONFIG_MEM_TRACKER

    39 # include "vpx_mem_tracker.h"

    40 # if VPX_MEM_TRACKER_VERSION_CHIEF != 2 || VPX_MEM_TRACKER_VERSION_MAJOR != 5

    41 #  error "vpx_mem requires memory tracker version 2.5 to track memory usage"

    42 # endif

    43 #endif

    45 #define ADDRESS_STORAGE_SIZE      sizeof(size_t)

    47 #ifndef DEFAULT_ALIGNMENT

    48 # if defined(VXWORKS)

    49 #  define DEFAULT_ALIGNMENT        32        /*default addr alignment to use in

    50 calls to vpx_* functions other

    51 than vpx_memalign*/

    52 # else

    53 #  define DEFAULT_ALIGNMENT        (2 * sizeof(void*))  /* NOLINT */

    54 # endif

    55 #endif

    57 #if CONFIG_MEM_TRACKER

    58 # define TRY_BOUNDS_CHECK         1        /*when set to 1 pads each allocation,

    59 integrity can be checked using

    60 vpx_memory_tracker_check_integrity

    61 or on free by defining*/

    62 /*TRY_BOUNDS_CHECK_ON_FREE*/

    63 #else

    64 # define TRY_BOUNDS_CHECK         0

    65 #endif /*CONFIG_MEM_TRACKER*/

    67 #if TRY_BOUNDS_CHECK

    68 # define TRY_BOUNDS_CHECK_ON_FREE 0          /*checks mem integrity on every

    69 free, very expensive*/

    70 # define BOUNDS_CHECK_VALUE       0xdeadbeef /*value stored before/after ea.

    71 mem addr for bounds checking*/

    72 # define BOUNDS_CHECK_PAD_SIZE    32         /*size of the padding before and

    73 after ea allocation to be filled

    74 with BOUNDS_CHECK_VALUE.

    75 this should be a multiple of 4*/

    76 #else

    77 # define BOUNDS_CHECK_VALUE       0

    78 # define BOUNDS_CHECK_PAD_SIZE    0

    79 #endif /*TRY_BOUNDS_CHECK*/

    81 #ifndef REMOVE_PRINTFS

    82 # define REMOVE_PRINTFS 0

    83 #endif

    85 /* Should probably use a vpx_mem logger function. */

    86 #if REMOVE_PRINTFS

    87 # define _P(x)

    88 #else

    89 # define _P(x) x

    90 #endif

    92 /*returns an addr aligned to the byte boundary specified by align*/

    93 #define align_addr(addr,align) (void*)(((size_t)(addr) + ((align) - 1)) & (size_t)-(align))

    95 #endif /*__VPX_MEM_INTRNL_H__*/

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