Macro to timeout operations that take too long

[pw0908]

Hi!

On my Genie app, there are some cases where, if the user inputs unphysical conditions, the solvers will get stuck / take a long time to output an unreasonable result. As such, it would be great to have some sort of macro that will only allow a task to only run for a certain amount of time. There was an example here: https://discourse.julialang.org/t/simple-timeout-of-function/99578/3

The macro they propose looks like this:

macro timeout(seconds, expr_to_run, expr_when_fails="Timed out")
    quote
        tsk = @task $(esc(expr_to_run))
        schedule(tsk)
        Timer($(esc(seconds))) do timer
            istaskdone(tsk) || Base.throwto(tsk, InterruptException())
        end
        try
            fetch(tsk)
        catch _
            $(esc(expr_when_fails))
        end
    end
end

However, I've found that this macro doesn't work for my cases. Here is an MWE (you'll need to install Clapeyron):

using Clapeyron

model = PCSAFT(["water", "carbon dioxide"])

@time bubble_pressure(model,298.15,[0.9,0.1])
# After first compilation, this should take about 0.8s

@timeout 0.01 bubble_pressure(model,298.15,[0.9,0.1])
# Doesn't timeout