hg: jdk7/hotspot-rt/hotspot: 6811367: Fix code in HeapDumper::dump_heap() to avoid buffer overrun

[coleen.phillimore at oracle.com]

Changeset: 17c778814856
Author:    coleenp
Date:      2011-01-14 13:47 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/17c778814856

6811367: Fix code in HeapDumper::dump_heap() to avoid buffer overrun
Summary: Check buffer size before using and use dynamic buffer sizes for subsequent calls.
Reviewed-by: kamg, dholmes

! src/share/vm/services/heapDumper.cpp