mem.h 2.49 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
/*
 * Copyright © 2018, VideoLAN and dav1d authors
 * Copyright © 2018, Two Orioles, LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __DAV1D_COMMON_MEM_H__
#define __DAV1D_COMMON_MEM_H__

#include <assert.h>
#include <stdlib.h>
Hugo Beauzée-Luyssen's avatar
Hugo Beauzée-Luyssen committed
33 34

#ifdef HAVE_ALIGNED_MALLOC
35
#include <malloc.h>
Hugo Beauzée-Luyssen's avatar
Hugo Beauzée-Luyssen committed
36
#endif
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

/*
 * Allocate 32-byte aligned memory. The return value can be released
 * by calling the standard free() function.
 */
static inline void *dav1d_alloc_aligned(size_t sz, size_t align) {
#ifdef HAVE_POSIX_MEMALIGN
    void *ptr;
    assert(!(align & (align - 1)));
    if (posix_memalign(&ptr, align, sz)) return NULL;
    return ptr;
#elif defined(HAVE_ALIGNED_MALLOC)
    return _aligned_malloc(sz, align);
#else
#error Missing aligned alloc implementation
#endif
}

static inline void dav1d_free_aligned(void* ptr) {
#ifdef HAVE_POSIX_MEMALIGN
    free(ptr);
#elif defined(HAVE_ALIGNED_MALLOC)
    _aligned_free(ptr);
#endif
}

static inline void dav1d_freep_aligned(void* ptr) {
    void **mem = (void **) ptr;
    if (*mem) {
        dav1d_free_aligned(*mem);
        *mem = NULL;
    }
}

static inline void freep(void *ptr) {
    void **mem = (void **) ptr;
    if (*mem) {
        free(*mem);
        *mem = NULL;
    }
}

#endif /* __DAV1D_COMMON_MEM_H__ */