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

futex.2: Note that at least one bit must be set in mask for BITSET operations 

At least one bit must be set in the 'val3' mask supplied for the
FUTEX_WAIT_BITSET and FUTEX_WAKE_BITSET operations.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2016-06-24 09:35:44 +02:00
parent 84abf4ba97
commit 6c38ce7f1f
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
man2/futex.2
View File

@ -694,7 +694,8 @@ This operation is like
except that
.I val3
is used to provide a 32-bit bit mask to the kernel.
This bit mask is stored in the kernel-internal state of the waiter.
This bit mask, in which at least one bit must be set,
is stored in the kernel-internal state of the waiter.
See the description of
.BR FUTEX_WAKE_BITSET
for further details.
@ -722,7 +723,8 @@ This operation is the same as
except that the
.I val3
argument is used to provide a 32-bit bit mask to the kernel.
This bit mask is used to select which waiters should be woken up.
This bit mask, in which at least one bit must be set,
is used to select which waiters should be woken up.
The selection is done by a bit-wise AND of the "wake" bit mask
(i.e., the value in
.IR val3 )