On Sat, 15 May 2010, Mariano Martinez Peck wrote:
On Sat, May 15, 2010 at 8:54 PM, Levente Uzonyi <[email protected]> wrote:
On Sat, 15 May 2010, Mariano Martinez Peck wrote:
Hi folks. This is why I like writing in books/wikis, because I always
learn
:)
Now I writing in the book about the Interrupt Key and I come up with this
guy I was not even aware of: CPUWatcher. It seemss very cool and useful.
However, I am using it wrong, or there is too much dust on it. I want to
ask if I am using it well before debugging and try to make it work.
As the class comment says, I tried to do this:
CPUWatcher startMonitoring. "process period 20 seconds, sample rate 100
msec"
And then I evaluated in a workspace:
[ true ] whileTrue: [ 1+1 ]
It should stop that process when it is using 80% of the CPU, but it
doesn't.
The process is never stop and the image freeze. I then tried:
CPUWatcher startMonitoring. "process period 20 seconds, sample rate 100
msec"
CPUWatcher current threshold: 0.3. "change from 80% to 30%"
I have the same results...
any hints?
Your code doesn't have any message sends when executed, so it can't be
interrupted.
Hi Levente. Thanks for the answer, but I didn't understand. Which code do
you mean?
If you refer to:
[ true ] whileTrue: [ 1+1 ]
I am sending the message whileTrue: to BlockClosure and the message + to 1.
So, I don't understand.
In theory yes, but in practice no. Just look at the generated bytecode:
13 <71> pushConstant: true
14 <9D> jumpFalse: 21
15 <76> pushConstant: 1
16 <76> pushConstant: 1
17 <B0> send: +
18 <87> pop
19 <A3 F8> jumpTo: 13
21 <78> returnSelf
As you can see #whileTrue: totally disappeared, no message sends. There's
a send for #+, but that's a B0 bytecode which will not do a real message
send, because both the receiver and the argument is a SmallInteger.
Therefore your code won't send any messages.
Levente
Btw, you can turn CPUWatcher on from the Process Browser and see the CPU
usage of processes.
Yes, I tried this before but it happened the same....I tried to test it,
evaluating
[ true ] whileTrue: [ 1+1 ] but it was not interrupted.
I also tried to click several times in the world but with no luck.
Thanks
Mariano
Levente
Cheers
Mariano
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