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Code submissions have continually suffered from formatting inconsistencies that constantly have to be addressed. Using clang-format simplifies this by making code formatting more consistent, and allows automation of the code formatting so that maintainers can focus more on the code itself instead of code formatting.
155 lines
3.1 KiB
C
155 lines
3.1 KiB
C
/*
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* Copyright (c) 2013 Hugh Bailey <obs.jim@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "base.h"
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#include "bmem.h"
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#include "platform.h"
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#include "threading.h"
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/*
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* NOTE: totally jacked the mem alignment trick from ffmpeg, credit to them:
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* http://www.ffmpeg.org/
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*/
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#define ALIGNMENT 32
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/* TODO: use memalign for non-windows systems */
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#if defined(_WIN32)
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#define ALIGNED_MALLOC 1
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#else
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#define ALIGNMENT_HACK 1
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#endif
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static void *a_malloc(size_t size)
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{
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#ifdef ALIGNED_MALLOC
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return _aligned_malloc(size, ALIGNMENT);
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#elif ALIGNMENT_HACK
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void *ptr = NULL;
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long diff;
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ptr = malloc(size + ALIGNMENT);
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if (ptr) {
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diff = ((~(long)ptr) & (ALIGNMENT - 1)) + 1;
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ptr = (char *)ptr + diff;
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((char *)ptr)[-1] = (char)diff;
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}
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return ptr;
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#else
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return malloc(size);
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#endif
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}
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static void *a_realloc(void *ptr, size_t size)
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{
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#ifdef ALIGNED_MALLOC
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return _aligned_realloc(ptr, size, ALIGNMENT);
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#elif ALIGNMENT_HACK
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long diff;
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if (!ptr)
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return a_malloc(size);
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diff = ((char *)ptr)[-1];
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ptr = realloc((char *)ptr - diff, size + diff);
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if (ptr)
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ptr = (char *)ptr + diff;
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return ptr;
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#else
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return realloc(ptr, size);
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#endif
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}
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static void a_free(void *ptr)
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{
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#ifdef ALIGNED_MALLOC
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_aligned_free(ptr);
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#elif ALIGNMENT_HACK
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if (ptr)
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free((char *)ptr - ((char *)ptr)[-1]);
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#else
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free(ptr);
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#endif
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}
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static struct base_allocator alloc = {a_malloc, a_realloc, a_free};
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static long num_allocs = 0;
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void base_set_allocator(struct base_allocator *defs)
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{
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memcpy(&alloc, defs, sizeof(struct base_allocator));
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}
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void *bmalloc(size_t size)
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{
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void *ptr = alloc.malloc(size);
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if (!ptr && !size)
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ptr = alloc.malloc(1);
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if (!ptr) {
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os_breakpoint();
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bcrash("Out of memory while trying to allocate %lu bytes",
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(unsigned long)size);
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}
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os_atomic_inc_long(&num_allocs);
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return ptr;
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}
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void *brealloc(void *ptr, size_t size)
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{
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if (!ptr)
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os_atomic_inc_long(&num_allocs);
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ptr = alloc.realloc(ptr, size);
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if (!ptr && !size)
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ptr = alloc.realloc(ptr, 1);
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if (!ptr) {
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os_breakpoint();
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bcrash("Out of memory while trying to allocate %lu bytes",
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(unsigned long)size);
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}
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return ptr;
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}
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void bfree(void *ptr)
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{
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if (ptr)
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os_atomic_dec_long(&num_allocs);
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alloc.free(ptr);
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}
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long bnum_allocs(void)
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{
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return num_allocs;
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}
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int base_get_alignment(void)
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{
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return ALIGNMENT;
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}
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void *bmemdup(const void *ptr, size_t size)
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{
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void *out = bmalloc(size);
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if (size)
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memcpy(out, ptr, size);
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return out;
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}
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