# HG changeset patch
# User tschatzl
# Date 1379503132 -7200
# Node ID 1ea8bd3b6624eb794b909d28afd2756aff2e19bd
# Parent  a81f45903813e52d462430f404ade7a5003f9f05
8024669: Native OOME when allocating after changes to maximum heap supporting Coops sizing on sparcv9
Summary: After changes in 8010722 the ergonomics for calculating the size of the heap that supports zero based compressed oops changed. This lead to the VM actually using zero based compressed oops. Due to low default HeapBaseMinAddress, the OS mapping in the application image at the same address, and limitations of the malloc implementation on Solaris this resulted in very little C heap available for the VM. So the VM immediately gives a native OOME when the machine has lots of physical memory (>=32G). The solution is to increase the HeapBaseMinAddress so that the VM has enough C heap.
Reviewed-by: kvn, brutisso

diff -r a81f45903813 -r 1ea8bd3b6624 hotspot/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp
--- a/hotspot/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Wed Sep 18 10:02:19 2013 +0200
+++ b/hotspot/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Wed Sep 18 13:18:52 2013 +0200
@@ -35,7 +35,9 @@
 
 // Used on 64 bit platforms for UseCompressedOops base address
 #ifdef _LP64
-define_pd_global(uintx, HeapBaseMinAddress,      CONST64(4)*G);
+// use 6G as default base address because by default the OS maps the application
+// to 4G on Solaris-Sparc. This leaves at least 2G for the native heap.
+define_pd_global(uintx, HeapBaseMinAddress,      CONST64(6)*G);
 #else
 define_pd_global(uintx, HeapBaseMinAddress,      2*G);
 #endif