This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH] BZ #14782 system async cancellation
Rich Felker <dalias@aerifal.cx> writes:
> On Thu, Nov 01, 2012 at 08:31:02AM +0100, Andreas Schwab wrote:
>> Rich Felker <dalias@aerifal.cx> writes:
>>
>> > -/* We have to and actually can handle cancelable system(). The big
>> > - problem: we have to kill the child process if necessary. To do
>> > - this a cleanup handler has to be registered and is has to be able
>> > - to find the PID of the child. The main problem is to reliable have
>> > - the PID when needed. It is not necessary for the parent thread to
>> > - return. It might still be in the kernel when the cancellation
>> > - request comes. Therefore we have to use the clone() calls ability
>> > - to have the kernel write the PID into the user-level variable. */
>> > -#ifndef FORK
>> > -# define FORK() \
>> > - INLINE_SYSCALL (clone, 3, CLONE_PARENT_SETTID | SIGCHLD, 0, &pid)
>> > -#endif
>>
>> What about the other uses?
>
> Please clarify. Did I miss something?
Yes, all the other uses of FORK.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."