/* ** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved. ** Distributed under the terms of the NewOS License. */ #ifndef _KERNEL_CBUF_H #define _KERNEL_CBUF_H #include <OS.h> typedef struct cbuf cbuf; #ifdef __cplusplus extern "C" { #endif status_t cbuf_init(void); cbuf *cbuf_get_chain(size_t len); cbuf *cbuf_get_chain_noblock(size_t len); void cbuf_free_chain_noblock(cbuf *buf); void cbuf_free_chain(cbuf *buf); size_t cbuf_get_length(cbuf *buf); void *cbuf_get_ptr(cbuf *buf, size_t offset); bool cbuf_is_contig_region(cbuf *buf, size_t start, size_t end); status_t cbuf_memcpy_to_chain(cbuf *chain, size_t offset, const void *_src, size_t len); status_t cbuf_memcpy_from_chain(void *dest, cbuf *chain, size_t offset, size_t len); status_t cbuf_user_memcpy_to_chain(cbuf *chain, size_t offset, const void *_src, size_t len); status_t cbuf_user_memcpy_from_chain(void *dest, cbuf *chain, size_t offset, size_t len); uint16 cbuf_ones_cksum16(cbuf *chain, size_t offset, size_t len); cbuf *cbuf_merge_chains(cbuf *chain1, cbuf *chain2); cbuf *cbuf_duplicate_chain(cbuf *chain, size_t offset, size_t len); status_t cbuf_truncate_head(cbuf *chain, size_t trunc_bytes); status_t cbuf_truncate_tail(cbuf *chain, size_t trunc_bytes); void cbuf_test(void); // ToDo: to be removed... #ifdef __cplusplus } #endif #endif /* _KERNEL_CBUF_H */