diff options
| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2013-06-21 12:30:25 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2013-06-21 12:30:25 +0200 |
| commit | 2857d3ff8a3390a9f8f474e09740c9dcae9bdd1b (patch) | |
| tree | 6f3fe60ffa7c2abbf0b95fa1cfdd904ae764a448 | |
| parent | 04aa92829d7cc0b9db1284bd0c0a0c07c9e004ea (diff) | |
| download | man-pages-2857d3ff8a3390a9f8f474e09740c9dcae9bdd1b.tar.gz | |
pread.2: pread() and pwrite() are especially useful in multithreaded applications
Reported-by: Марк Коренберг <socketpair@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man2/pread.2 | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/man2/pread.2 b/man2/pread.2 index 1d648b15ef..1972fe8501 100644 --- a/man2/pread.2 +++ b/man2/pread.2 @@ -22,7 +22,7 @@ .\" the source, must acknowledge the copyright and authors of this work. .\" %%%LICENSE_END .\" -.TH PREAD 2 2013-04-01 "Linux" "Linux Programmer's Manual" +.TH PREAD 2 2013-06-21 "Linux" "Linux Programmer's Manual" .SH NAME pread, pwrite \- read from or write to a file descriptor at a given offset .SH SYNOPSIS @@ -115,6 +115,14 @@ on older kernels without the system calls) was added in glibc 2.1. .SH CONFORMING TO POSIX.1-2001. .SH NOTES +The +.BR pread () +and +.BR pwrite () +system calls are especially useful in multithreaded applications. +They allow multiple threads to perform I/O on the same file descriptor +without being affected by changes to the file offset by other threads. + On Linux, the underlying system calls were renamed in kernel 2.6: .BR pread () |