diff options
| author | John Högberg <[email protected]> | 2017-11-02 17:02:16 +0100 |
|---|---|---|
| committer | John Högberg <[email protected]> | 2017-11-30 15:44:39 +0100 |
| commit | c9fc20af633bbdc68206ca7d7438cd803793875f (patch) | |
| tree | c853c8302a8154f4139593fcb9491d1301e7184b | |
| parent | 4b5357ad04397b09f1acedd81e9439b0af4549ab (diff) | |
| download | otp-c9fc20af633bbdc68206ca7d7438cd803793875f.tar.gz otp-c9fc20af633bbdc68206ca7d7438cd803793875f.tar.bz2 otp-c9fc20af633bbdc68206ca7d7438cd803793875f.zip | |
Remove doc for sendfile/5 use_threads option
The option no longer does anything; systems that lack support for
non-blocking sendfile(2) will use the Erlang fallback.
| -rw-r--r-- | lib/kernel/doc/src/file.xml | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml index 3e3c5b3bf3..58abb35428 100644 --- a/lib/kernel/doc/src/file.xml +++ b/lib/kernel/doc/src/file.xml @@ -1837,24 +1837,16 @@ f.txt: {person, "kalle", 25}. <p>The file used must be opened using the <c>raw</c> flag, and the process calling <c>sendfile</c> must be the controlling process of the socket. See <seealso marker="gen_tcp#controlling_process-2"><c>gen_tcp:controlling_process/2</c></seealso>.</p> - <p>If the OS used does not support <c>sendfile</c>, an Erlang fallback - using - <seealso marker="#read/2"><c>read/2</c></seealso> and - <seealso marker="gen_tcp#send/2"><c>gen_tcp:send/2</c></seealso> is used.</p> + <p>If the OS used does not support non-blocking <c>sendfile</c>, an + Erlang fallback using <seealso marker="#read/2"><c>read/2</c></seealso> + and <seealso marker="gen_tcp#send/2"><c>gen_tcp:send/2</c></seealso> is + used.</p> <p>The option list can contain the following options:</p> <taglist> <tag><c>chunk_size</c></tag> <item><p>The chunk size used by the Erlang fallback to send data. If using the fallback, set this to a value that comfortably fits in the systems memory. Default is 20 MB.</p></item> - <tag><c>use_threads</c></tag> - <item><p>Instructs the emulator to use the <c>async</c> thread pool for the - <c>sendfile</c> system call. This can be useful if the OS you are running - on does not properly support non-blocking <c>sendfile</c> calls. Notice that - using <c>async</c> threads potentially makes your system vulnerable to slow - client attacks. If set to <c>true</c> and no <c>async</c> threads are available, - the <c>sendfile</c> call returns <c>{error,einval}</c>. - Introduced in Erlang/OTP 17.0. Default is <c>false</c>.</p></item> </taglist> </desc> </func> |