--- a/hotspot/src/share/vm/runtime/virtualspace.cpp Wed Dec 12 12:07:32 2012 -0800
+++ b/hotspot/src/share/vm/runtime/virtualspace.cpp Mon Dec 17 08:49:20 2012 +0100
@@ -329,20 +329,9 @@
if ((((size_t)base + noaccess_prefix) & (alignment - 1)) != 0) {
// Base not aligned, retry
if (!os::release_memory(base, size)) fatal("os::release_memory failed");
- // Reserve size large enough to do manual alignment and
- // increase size to a multiple of the desired alignment
+ // Make sure that size is aligned
size = align_size_up(size, alignment);
- size_t extra_size = size + alignment;
- do {
- char* extra_base = os::reserve_memory(extra_size, NULL, alignment);
- if (extra_base == NULL) return;
- // Do manual alignement
- base = (char*) align_size_up((uintptr_t) extra_base, alignment);
- assert(base >= extra_base, "just checking");
- // Re-reserve the region at the aligned base address.
- os::release_memory(extra_base, extra_size);
- base = os::reserve_memory(size, base);
- } while (base == NULL);
+ base = os::reserve_memory_aligned(size, alignment);
if (requested_address != 0 &&
failed_to_reserve_as_requested(base, requested_address, size, false)) {