view agent/test/jdi/sagtarg.java @ 3766:c3f1170908be

7045330: G1: Simplify/fix the HeapRegionSeq class 7042285: G1: native memory leak during humongous object allocation 6804436: G1: heap region indices should be size_t Summary: A series of fixes and improvements to the HeapRegionSeq class: a) replace the _regions growable array with a standard C array, b) avoid de-allocating / re-allocating HeapRegion instances when the heap shrinks / grows (fix for 7042285), c) introduce fast method to map address to HeapRegion via a "biased" array pointer, d) embed the _hrs object in G1CollectedHeap, instead of pointing to it via an indirection, e) assume that all the regions added to the HeapRegionSeq instance are contiguous, f) replace int's with size_t's for indexes (and expand that to HeapRegion as part of 6804436), g) remove unnecessary / unused methods, h) rename a couple of fields (_alloc_search_start and _seq_bottom), i) fix iterate_from() not to always start from index 0 irrespective of the region passed to it, j) add a verification method to check the HeapRegionSeq assumptions, k) always call the wrappers for _hrs.iterate(), _hrs_length(), and _hrs.at() from G1CollectedHeap, not those methods directly, and l) unify the code that expands the sequence (by either re-using or creating a new HeapRegion) and make it robust wrt to a HeapRegion allocation failing. Reviewed-by: stefank, johnc, brutisso
author tonyp
date Fri, 10 Jun 2011 13:16:40 -0400
parents c18cbe5936b8
children
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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// This is the target debuggee for sagtest.java.
// It just waits which lets the test call all the JDI
// methods on it.

import java.util.List;

interface MyInterface {
    public void myMethod();
}


abstract class MySuper implements MyInterface {
}

class sagtarg extends MySuper {
    public static void main(String[] args){
        String stringVar = "localVar1";
        int    intVar = 89;
        List<String> genVar = null;
        System.out.println("Howdy!");
        String myStr = "";
        synchronized(myStr) {
            try {
                myStr.wait();
            } catch (InterruptedException ee) {
            }
        }
        System.out.println("Goodbye from sagtarg!");
    }

    public void myMethod() {
    }
}