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niceSOFT
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src/splice.h
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Pádraig Brady
build: fix build failure on AIX
17 апр 2026, 00:05
17 апр 2026, 00:05
5597a27
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/* Common definitions for splice and vmsplice. Copyright (C) 2026 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ #ifndef SPLICE_H # define SPLICE_H 1 # if HAVE_VMSPLICE /* splice() and vmsplice() were introduced at the same time, so assume splice() is available. Note AIX also has a different splice() which is why we don't explicitly check for that function. */ # define HAVE_SPLICE 1 /* Empirically determined pipe size for best throughput. Needs to be <= /proc/sys/fs/pipe-max-size */ enum { SPLICE_PIPE_SIZE = 512 * 1024 }; static inline idx_t increase_pipe_size (int fd) { int pipe_cap = 0; # if defined F_SETPIPE_SZ && defined F_GETPIPE_SZ if ((pipe_cap = fcntl (fd, F_SETPIPE_SZ, SPLICE_PIPE_SIZE)) < 0) pipe_cap = fcntl (fd, F_GETPIPE_SZ); # endif if (pipe_cap <= 0) pipe_cap = 64 * 1024; return pipe_cap; } # endif #endif