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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
commit | 69c6a41ffb878ef98c9378ed4b1634a404cfaa7f (patch) | |
tree | b2a4f704565d62fbb129ab9dc3b35977c50e6e7f /src/libdnssec/contrib/vpool.h | |
parent | Initial commit. (diff) | |
download | knot-69c6a41ffb878ef98c9378ed4b1634a404cfaa7f.tar.xz knot-69c6a41ffb878ef98c9378ed4b1634a404cfaa7f.zip |
Adding upstream version 2.7.6.upstream/2.7.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/libdnssec/contrib/vpool.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/libdnssec/contrib/vpool.h b/src/libdnssec/contrib/vpool.h new file mode 100644 index 0000000..82e3d66 --- /dev/null +++ b/src/libdnssec/contrib/vpool.h @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2006, 2008 Alexey Vatchenko <av@bsdua.org> + * + * 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. + */ + +/* + * VPool: implementation of pool of data with a variable size. + */ +#ifndef _VPOOL_H_ +#define _VPOOL_H_ + +#include <stddef.h> +#include <limits.h> + +struct vpool { + void *v_basebuf; /* pointer returned by (re|m)alloc() */ + void *v_buf; /* actual data starts here */ + size_t v_off; + size_t v_size; + + size_t v_blksize; + size_t v_limit; + int v_lasterr; +}; + +enum vpool_trunc {VPOOL_EXCLUDE, VPOOL_INCLUDE}; +#define VPOOL_TAIL UINT_MAX + +void vpool_init(struct vpool *pool, size_t blksize, size_t limit); +void vpool_final(struct vpool *pool); + +void vpool_reset(struct vpool *pool); +void vpool_wipe(struct vpool *pool); + +void * vpool_insert(struct vpool *pool, + size_t where, void *data, size_t datsize); +void * vpool_expand(struct vpool *pool, size_t where, size_t size); + +int vpool_truncate(struct vpool *pool, + size_t where, size_t size, enum vpool_trunc how); + +#define vpool_is_empty(pool) ((pool)->v_off == 0) +#define vpool_get_buf(pool) ((pool)->v_buf) +#define vpool_get_length(pool) ((pool)->v_off) +#define vpool_get_error(pool) ((pool)->v_lasterr) + +void vpool_export(struct vpool *pool, void **buf, size_t *size); + +#endif /* !_VPOOL_H_ */ |