User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; el; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6
The proper way is to call swing methods through the event dispatch thread.
so you either
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Memory_Leak();
}
});
}
or
for (long i=0; i<100000000; i++) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
label.setText(String.valueOf(i));
}
});
}
or
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
for (long i=0; i<100000000; i++) {
label.setText(String.valueOf(i));
}
}
});
depending on how the rest of your application works.
I would go for the B solution
Στις 9/11/2010 2:36 πμ, ο/η Russ Calvert έγραψε:
I've got a strange memory leak that I'm trying to understand and find
a way to fix or get around. The problem was first reported by a
customer who found that after running for a very long time, my
software becomes very slow and unresponsive. This turned out to be due
to a slow increase in the amount of memory being used, as shown in
Activity Monitor. After much investigation, I've found a simple test
case that illustrates the problem. This consists of a JLabel displayed
in a JFrame, with the text of the JLabel being very frequently updated:
for (long i=0; i<100000000; i++) {
label.setText(String.valueOf(i));
}
}
public static void main(String args[]) {
new Memory_Leak();
}
}
When this little program is run (which typically takes several
minutes), the real memory consumption as displayed in Activity Monitor
slowly grows and grows and grows, by about 3MB in the test I've just
run. Monitoring with JConsole shows that both heap and non-heap memory
remain roughly constant, but the total number of classes loaded grows
linearly with time from about 1,700 to 14,000 during execution. This
class loading looks odd to me, but maybe it's normal - I don't
understand what goes on in the depths of a JVM. I've not bothered
trying to analyse heap dumps, as the constant heap size suggests that
I would be wasting my time. One other thing I've noticed is that the
leak seems to be many times faster with OSX 10.4 than OSX 10.5/6.
Does anyone understand what's going on here, and/or how I remove the
memory leak?
Thanks in advance.
Russ Calvert
AstroGrav Astronomy Software
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