[3816] in java-interest
Where does the allocation happen.
daemon@ATHENA.MIT.EDU (Pradeep Badri)
Tue Nov 28 22:17:20 1995
From: Pradeep Badri <pbadri@cisco.com>
To: java-interest@java.sun.com
Date: Tue, 28 Nov 95 16:25:47 PST
Cc: pbadri@cisco.com (Pradeep Badri)
Hi,
When i allocate memory for an object/array, where does it happen.
in the heap or in the stack.
eg.
byte [] func() {
byte [] stackVar ; // want it on stack.
byte [] heapVar ; // want it on heap.
stackVar = new byte[200] ;
heapVar = new byte[200] ;
...........
return heapVar ; // note that i want to pass this around.
}
I really want the allocation to happen in the stack and not
in the heap. because i might call func frequently and don't want
to fragment memory by frequent allocation/deallocation.
An equivalent C code is
char *func() {
char stackVar[200] ; // want it on stack.
char * heapVar ; // want it on heap.
heapVar = new char[200] ;
...........
return heapVar ;
.............
}
So how exactly do i make sure that allocation happens in stack
and sometimes i would like to allocate it on heap so that i can
pass it on to other functions.
I read through the spec and saw a keyword
"transient" and "volatile"
Do i have to use "transient" to allocate space in stack
and by default allocation happens on heap.
Appreciate any help.
thanks,
-pb.
Pradeep Badri.
Cisco Systems.
408-526-8819.
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