--- old/src/hotspot/share/gc/z/zPreMappedMemory.cpp	2019-05-02 09:57:54.649218744 +0200
+++ /dev/null	2019-04-18 12:37:53.502576822 +0200
@@ -1,87 +0,0 @@
-/*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-#include "precompiled.hpp"
-#include "gc/z/zPage.inline.hpp"
-#include "gc/z/zPhysicalMemory.inline.hpp"
-#include "gc/z/zPreMappedMemory.inline.hpp"
-#include "gc/z/zVirtualMemory.inline.hpp"
-#include "logging/log.hpp"
-
-ZPreMappedMemory::ZPreMappedMemory(ZVirtualMemoryManager &vmm, ZPhysicalMemoryManager &pmm, size_t size) :
-    _vmem(),
-    _pmem(),
-    _initialized(false) {
-  if (!vmm.is_initialized() || !pmm.is_initialized()) {
-    // Not initialized
-    return;
-  }
-
-  // Pre-mapping and pre-touching memory can take a long time. Log a message
-  // to help the user understand why the JVM might seem slow to start.
-  log_info(gc, init)("Pre-touching: %s", AlwaysPreTouch ? "Enabled" : "Disabled");
-  log_info(gc, init)("Pre-mapping: " SIZE_FORMAT "M", size / M);
-
-  if (size > 0) {
-    _pmem = pmm.alloc(size);
-    if (_pmem.is_null()) {
-      // Out of memory
-      log_error(gc, init)("Failed to pre-map Java heap (Cannot allocate physical memory)");
-      return;
-    }
-
-    _vmem = vmm.alloc(size, true /* alloc_from_front */);
-    if (_vmem.is_null()) {
-      // Out of address space
-      log_error(gc, init)("Failed to pre-map Java heap (Cannot allocate virtual memory)");
-      pmm.free(_pmem);
-      return;
-    }
-
-    // Map physical memory
-    pmm.map(_pmem, _vmem.start());
-  }
-
-  _initialized = true;
-}
-
-ZPage* ZPreMappedMemory::alloc_page(uint8_t type, size_t size) {
-  if (size > available()) {
-    // Not enough pre-mapped memory
-    return NULL;
-  }
-
-  // Take a chunk of the pre-mapped memory
-  const ZPhysicalMemory pmem = _pmem.split(size);
-  const ZVirtualMemory  vmem = _vmem.split(size);
-
-  ZPage* const page = new ZPage(type, vmem, pmem);
-  page->set_pre_mapped();
-
-  return page;
-}
-
-void ZPreMappedMemory::clear() {
-  assert(_pmem.is_null(), "Should be detached");
-  _vmem.clear();
-}