Mercurial > molko
diff src/libmlk-core/core/alloc.h @ 320:8f9937403749
misc: improve loading of data
author | David Demelier <markand@malikania.fr> |
---|---|
date | Fri, 01 Oct 2021 20:30:00 +0200 |
parents | libmlk-core/core/alloc.h@d01e83210ca2 |
children | 19782ea1cf4a |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/libmlk-core/core/alloc.h Fri Oct 01 20:30:00 2021 +0200 @@ -0,0 +1,94 @@ +/* + * alloc.h -- custom allocators + * + * Copyright (c) 2020-2021 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. + */ + +#ifndef MOLKO_CORE_ALLOC_H +#define MOLKO_CORE_ALLOC_H + +#include <stddef.h> + +#include "core.h" +#include "util.h" + +/* Must be power of 2. */ +#define ALLOC_POOL_INIT_DEFAULT (32) + +/* Custom allocator. */ +struct alloc_funcs { + void *(*alloc)(size_t); + void *(*realloc)(void *, size_t); + void (*free)(void *); +}; + +/* Minimalist growable array for loading data. */ +struct alloc_pool { + void *data; + size_t elemsize; + size_t size; + size_t capacity; + void (*finalizer)(void *); +}; + +CORE_BEGIN_DECLS + +/* allocator functions. */ +void +alloc_set(const struct alloc_funcs *); + +void * +alloc_new(size_t); + +void * +alloc_new0(size_t); + +void * +alloc_array(size_t, size_t); + +void * +alloc_array0(size_t, size_t); + +void * +alloc_renew(void *, size_t); + +void * +alloc_rearray(void *, size_t, size_t); + +void * +alloc_rearray0(void *, size_t, size_t, size_t); + +void * +alloc_dup(const void *, size_t); + +char * +alloc_sdup(const char *); + +/* alloc_pool functions. */ +int +alloc_pool_init(struct alloc_pool *, size_t , void (*)(void *)); + +void * +alloc_pool_new(struct alloc_pool *); + +void * +alloc_pool_get(const struct alloc_pool *, size_t); + +void +alloc_pool_finish(struct alloc_pool *); + +CORE_END_DECLS + +#endif /* !MOLKO_CORE_ALLOC_H */