In a message dated 12/31/00 2:16:58 PM Pacific Standard Time,
[EMAIL PROTECTED] writes:
> For compilers in which this is not the case, synchronized methods will
> probably result in slightly trimmer code than synchronized blocks for
> methods with multiple return points (a single instruction to release
> the lock rather than one instruction per return).
A fairly large bytecode savings. Making the whole method synchronized blocks
any concurrent calls to that object, though.
class SyncTest {
int a;
void gar(int foo) {
synchronized(this) {
a = foo;
}
}
synchronized void gar2(int foo) {
a = foo;
}
}
Method void gar(int)
0 aload_0
1 astore_2
2 aload_2
3 monitorenter
4 aload_0
5 iload_1
6 putfield #2 <Field int a>
9 aload_2
10 monitorexit
11 goto 19
14 astore_3
15 aload_2
16 monitorexit
17 aload_3
18 athrow
19 return
Exception table:
from to target type
4 14 14 any
Method void gar2(int)
0 aload_0
1 iload_1
2 putfield #2 <Field int a>
5 return
_______________________________________________
Freenet-dev mailing list
[EMAIL PROTECTED]
http://lists.sourceforge.net/mailman/listinfo/freenet-dev
