Re: Apache + mod_php performance

On 10/1/2024 10:21 PM, Lawrence D'Oliveiro wrote:

On Tue, 1 Oct 2024 20:50:30 -0400, Arne Vajhøj wrote:

On 10/1/2024 8:46 PM, Lawrence D'Oliveiro wrote:

On Tue, 1 Oct 2024 19:46:53 -0400, Arne Vajhøj wrote:

But any time one need to do anything time consuming in the GUI then it
needs to be done in its own thread ...

>
Note that “cpu-intensive” and “time-consuming” are not synonymous.
Something can take a long time to complete, but not require much CPU
time during that time, so running it in the main thread would be fine
and have minimal impact.

>
But how do you keep the GUI responsive if the event/main loop is doing
something that is time consuming??

 The task waiting for the operation to complete blocks on a notification
back from the event loop that it can proceed.

Now you have confused me again.
We had:
* some time consuming task that need to run
* some unrelated GUI events that need to be processed in the event loop
And now you say that the thread instead of blocking on the task block
waiting for a notification from the event loop.
I don't get that.
The first two look like:
while(has_next_event())
{
      ev = get_next_event()
      switch(ev.event_type)
      {
           case START_LONG_RUNNING:
               call calculate_all_primes_in_int64_and_display_count()
               break
           case SOMETHING_ELSE:
               call handle_something_else()
               break
      }
}
which hangs the GUI.
So you do what?
Arne