LDP
/
man-pages
mirror of https://github.com/mkerrisk/man-pages
0
1
Fork 0
Code Releases Activity

futex.2: Clarify return value details 

Reporte-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-07-27 12:57:30 +02:00
parent 943ccc5228
commit a5c5a06aba
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
man2/futex.2
View File

@ -53,7 +53,7 @@ anyone waiting for a particular condition.
The condition is represented by the futex word, which is an address
in memory supplied to the
.BR futex ()
system call, and the value at this memory location.
system call, and the 32-bit value at this memory location.
(While the virtual addresses for the same physical memory address
in separate processes may be different,
the same physical address may be shared by the processes using
@ -1117,7 +1117,11 @@ operation.
.\"
.SH RETURN VALUE
.PP
In the event of an error, all operations return \-1 and set
In the event of an error (and assuming that
.BR futex ()
was invoked via
.BR syscall (2)),
all operations return \-1 and set
.I errno
to indicate the cause of the error.
The return value on success depends on the operation,