Fixes: #1228
It can be reproduced by applying this patch:
```diff
@@ -45,6 +46,7 @@ func registerMemoryEvent(cgDir string, evName string, arg string) (<-chan struct
go func() {
defer func() {
close(ch)
+ <-time.After(1 * time.Second)
eventfd.Close()
evFile.Close()
}()
```
We can close channel after fds were closed.
Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
Use unix.Eventfd() instead of calling manually reimplementing it using
the raw syscall. Also use the correct corresponding unix.EFD_CLOEXEC
flag instead of unix.FD_CLOEXEC (which can have a different value on
some architectures and thus might lead to unexpected behavior).
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Since syscall is outdated and broken for some architectures,
use x/sys/unix instead.
There are still some dependencies on the syscall package that will
remain in syscall for the forseeable future:
Errno
Signal
SysProcAttr
Additionally:
- os still uses syscall, so it needs to be kept for anything
returning *os.ProcessState, such as process.Wait.
Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com>
It may be desirable to receive memory pressure levels notifications
before the container depletes all memory. This may be useful for
handling cases where the system thrashes when reaching the container's
memory limits.
Signed-off-by: Ido Yariv <ido@wizery.com>
Qiang Huang
Tobias Klauser
Christy Perez
Ido Yariv
Michael Crosby