Bruno Haible wrote:
> Eric Wong wrote:
> > > How would setting up a pipe or eventfd help with a communication
> > > problem between threads in the same process? I thought these were
> > > for communication between processes.
> >
> > The "self-pipe trick" is a common idiom in Unix for signal
> > h
On Tue, Feb 9, 2021 at 6:07 PM Bruno Haible wrote:
> Maybe I didn't describe accurately the situation I am asking for.
> I'm not attempting to transform a program to an event-based engine.
> I'm looking to let signal handlers (SIGTERM, SIGSEGV, SIGWINCH, etc.)
> read and traverse data structures t
On 2/9/21 5:21 PM, Eric Wong wrote:
I know the (C)Ruby VM uses it internally (or eventfd on Linux);
I think CPython's GVL does, too.
GNU Make does too. It's where I learned of the trick.
Eric Wong wrote:
> > How would setting up a pipe or eventfd help with a communication
> > problem between threads in the same process? I thought these were
> > for communication between processes.
>
> The "self-pipe trick" is a common idiom in Unix for signal
> handling; especially when pselect/pp
On Tue, Feb 9, 2021 at 5:01 PM Bruno Haible wrote:
>
> Ben Pfaff wrote:
> > Building an RCU implementation isn't necessarily difficult (I have done it,
> > but the implementation isn't suitable for gnulib).
> >
> > There is a liburcu that is under LGPL v2.1: https://liburcu.org/
>
> Thanks for the
Bruno Haible wrote:
> Hi Eric,
>
> Eric Wong wrote:
> > I would've recommended just using a pipe, socket or eventfd;
>
> How would setting up a pipe or eventfd help with a communication
> problem between threads in the same process? I thought these were
> for communication between processes.
Th
Hi Eric,
Eric Wong wrote:
> I would've recommended just using a pipe, socket or eventfd;
How would setting up a pipe or eventfd help with a communication
problem between threads in the same process? I thought these were
for communication between processes.
Bruno
Ben Pfaff wrote:
> On Sun, Feb 7, 2021 at 2:57 PM Bruno Haible wrote:
> > (2) Let the signal handler work only on immutable copies of the data
> > structure. Whenever the other code manipulates the data structure,
> > it creates an immutable copy of it, for the signal handler t
Bruno Haible wrote:
> Hi Marc, Ben,
>
> I need your expertise regarding data structures.
>
> Assume a program has a signal handler, which needs to share some data
> structure with the rest of the program.
>
> There are two cases:
>
> (A) Assume that the program is single-threaded.
> Then i
On Sun, Feb 7, 2021 at 2:57 PM Bruno Haible wrote:
> (2) Let the signal handler work only on immutable copies of the data
> structure. Whenever the other code manipulates the data structure,
> it creates an immutable copy of it, for the signal handler to use.
> Use an '
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