1 | /* |
2 | * Copyright (C) 2009 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #include "config.h" |
27 | #include "MarkStack.h" |
28 | |
29 | #if OS(UNIX) && !OS(SYMBIAN) |
30 | |
31 | #include <unistd.h> |
32 | #include <sys/mman.h> |
33 | |
34 | namespace JSC { |
35 | |
36 | void MarkStack::initializePagesize() |
37 | { |
38 | MarkStack::s_pageSize = getpagesize(); |
39 | } |
40 | |
41 | void* MarkStack::allocateStack(size_t size) |
42 | { |
43 | return mmap(addr: 0, len: size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, fd: -1, offset: 0); |
44 | } |
45 | void MarkStack::releaseStack(void* addr, size_t size) |
46 | { |
47 | munmap(addr: reinterpret_cast<char*>(addr), len: size); |
48 | } |
49 | |
50 | } |
51 | |
52 | #endif |
53 | |