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9efbfcd3ae
This removes all references of the `sys_util` documentation group which does not exist. Due to it being referenced by some module documentations there were some cases where the rendered doc was broken: * `div` did not appear in the list of modules * `iolist` appeared on top level of the module tree
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
/*
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* Copyright (C) 2018 Kaspar Schleiser <kaspar@schleiser.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @{
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*
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* @file
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* @brief iolist scatter / gather IO
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*
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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* @}
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*/
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#include <sys/uio.h>
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#include "iolist.h"
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unsigned iolist_count(const iolist_t *iolist)
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{
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unsigned count = 0;
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while (iolist) {
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count++;
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iolist = iolist->iol_next;
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}
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return count;
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}
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size_t iolist_size(const iolist_t *iolist)
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{
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size_t result = 0;
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while (iolist) {
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result += iolist->iol_len;
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iolist = iolist->iol_next;
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}
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return result;
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}
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size_t iolist_to_iovec(const iolist_t *iolist, struct iovec *iov, unsigned *count)
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{
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size_t bytes = 0;
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unsigned _count = 0;
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while (iolist) {
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iov->iov_base = iolist->iol_base;
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iov->iov_len = iolist->iol_len;
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bytes += iov->iov_len;
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_count++;
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iolist = iolist->iol_next;
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iov++;
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}
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*count = _count;
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return bytes;
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}
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