| /* |
| * Copyright (c) 2015, 2017, 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/zVirtualMemory.hpp" |
| #include "logging/log.hpp" |
| |
| #include <sys/mman.h> |
| #include <sys/types.h> |
| |
| bool ZVirtualMemoryManager::reserve(uintptr_t start, size_t size) { |
| // Reserve address space |
| const uintptr_t actual_start = (uintptr_t)mmap((void*)start, size, PROT_NONE, |
| MAP_ANONYMOUS|MAP_PRIVATE|MAP_NORESERVE, -1, 0); |
| if (actual_start != start) { |
| log_error(gc)("Failed to reserve address space for Java heap"); |
| return false; |
| } |
| |
| return true; |
| } |