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85026d5780
If available FICLONE and copy_file_range will be tried in addition to sendfile when copying data between two files. The fallback is a tradition read/write loop. On systems that support these it should improve performance.
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
/*
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ISC License
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Copyright (c) 2018, Antonio SJ Musumeci <trapexit@spawn.link>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#pragma once
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#include <sys/types.h>
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#include <cstddef>
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namespace fs
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{
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ssize_t
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copy_file_range(const int fd_in_,
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loff_t *off_in_,
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const int fd_out_,
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loff_t *off_out_,
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const size_t len_,
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const unsigned int flags_);
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ssize_t
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copy_file_range(const int fd_in_,
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const int fd_out_,
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const size_t len_,
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const unsigned int flags_ = 0);
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}
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