Mercurial > molko
view libcore/core/alloc.c @ 190:5dc57029b9f1
molko-js: allow objects/parameters in Molko.Painter API
author | David Demelier <markand@malikania.fr> |
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date | Sat, 07 Nov 2020 10:16:38 +0100 |
parents | cbce9143bf87 |
children | befa2e855d3b |
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/* * alloc.h -- custom allocators * * Copyright (c) 2020 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include "alloc.h" #include "error.h" #include "panic.h" static void * panic_alloc(size_t size) { void *mem; if (!(mem = malloc(size))) panicf("%s", strerror(errno)); return mem; } static void * panic_realloc(void *ptr, size_t size) { void *mem; if (!(mem = realloc(ptr, size)) && size != 0) panicf("%s", strerror(errno)); return mem; } struct allocator allocator = { .alloc = panic_alloc, .realloc = panic_realloc, .free = free }; void * alloc(size_t n, size_t size) { assert(n != 0); assert(size != 0); size_t total = n * size; if (total / n != size) return errorf("%s", strerror(ENOMEM)), NULL; return allocator.alloc(total); } void * alloc_zero(size_t n, size_t size) { assert(n != 0); assert(size != 0); void *mem; size_t total = n * size; if (total / n != size) return errorf("%s", strerror(ENOMEM)), NULL; if ((mem = allocator.alloc(total))) memset(mem, 0, total); return mem; } void * alloc_dup(const void *ptr, size_t size) { assert(ptr); assert(size != 0); void *mem; if ((mem = allocator.alloc(size))) memcpy(mem, ptr, size); return mem; }