Wait on event and condition in `c/c++`?

For performance reasons, it would be probably useful to have the ability to wait on condition in c/c++. Looking at monitors/drivers that could have a performance gain if used correctly.

Something like below to wait in c and not in python:

while condition == x:
    await event

Example python syntes can be like in #1250:

await RisingEdge(dut.clock).until_after(lambda: dut.ack.value)

I think @eric-wieser @ktbarrett have some ideas.

[themperek]

I think #1689 and #2208 are enough.

[eric-wieser]

I’m also starting to suspect that ReadOnly is wrong, and that the signal should be captured immediately at the rising edge of clock, to match how the verilog would capture it.