I have done a bit of debugging and have some results:
The problem is that waitchld is called even if there aren't any children
running. The waitchld() is called more then once. I don't know what is
the logic behind it.
Will check, if there is any child, helps?
RR
On 05/20/2013 04:11 PM, Roma
The race is in do-while loop in wait_for(). At the start of wait_for()
we are blocking SIGCHLD, however echo process ends during the loop and
we don't register it (don't handle SIGCHLD, which is sent).
Looking at the code, there is MUST_UNBLOCK_CHLD. May it make any harm to
enable it by default?
On 5/24/13 9:30 AM, Roman Rakus wrote:
> The race is in do-while loop in wait_for(). At the start of wait_for() we
> are blocking SIGCHLD, however echo process ends during the loop and we
> don't register it (don't handle SIGCHLD, which is sent).
> Looking at the code, there is MUST_UNBLOCK_CHLD. M
