src/share/vm/runtime/virtualspace.cpp

rev 3899 : [mq]: mickes-originalpatch

*** 330,350 ****
        // 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
        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);
  
        if (requested_address != 0 &&
            failed_to_reserve_as_requested(base, requested_address, size, false)) {
          // As a result of the alignment constraints, the allocated base differs
          // from the requested address. Return back to the caller who can
--- 330,340 ----
        // 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
        size = align_size_up(size, alignment);
!       base = os::reserve_memory_aligned(size, alignment);
  
        if (requested_address != 0 &&
            failed_to_reserve_as_requested(base, requested_address, size, false)) {
          // As a result of the alignment constraints, the allocated base differs
          // from the requested address. Return back to the caller who can