Import of pkgsrc-2015Q3

lang/openjdk8/patches/patch-hotspot_src_share_vm_runtime_arguments.cpp

@@ -0,0 +1,23 @@
+$NetBSD: patch-hotspot_src_share_vm_runtime_arguments.cpp,v 1.1 2015/08/27 19:03:59 joerg Exp $
+
+On 64bit systems, the JVM by default reserves 1GB VA to mangle class
+pointers into a 32bit representation. When the available memory is less
+than 16GB, e.g. due to process limits, scale this down. Even unused
+pages waste system resources and the default limit can stop the JVM
+from starting with ulimit -v 2G.
+
+--- hotspot/src/share/vm/runtime/arguments.cpp.orig	2015-08-26 15:02:34.000000000 +0000
++++ hotspot/src/share/vm/runtime/arguments.cpp
+@@ -1808,6 +1808,12 @@ void Arguments::set_heap_size() {
+     FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max);
+   }
+ 
++  if (FLAG_IS_DEFAULT(CompressedClassSpaceSize)) {
++    julong reasonable_max = phys_mem / 16;
++    reasonable_max = MIN2(reasonable_max, (julong)CompressedClassSpaceSize);
++    FLAG_SET_ERGO(uintx, CompressedClassSpaceSize, (uintx)reasonable_max);
++  }
++
+   // If the minimum or initial heap_size have not been set or requested to be set
+   // ergonomically, set them accordingly.
+   if (InitialHeapSize == 0 || min_heap_size() == 0) {