diff options
Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/runtime/MarkStackPosix.cpp')
-rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/runtime/MarkStackPosix.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/MarkStackPosix.cpp b/src/3rdparty/webkit/JavaScriptCore/runtime/MarkStackPosix.cpp new file mode 100644 index 0000000..8e78ff3 --- /dev/null +++ b/src/3rdparty/webkit/JavaScriptCore/runtime/MarkStackPosix.cpp @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" + + +#include "MarkStack.h" + +#include <unistd.h> +#include <sys/mman.h> + +namespace JSC { + +void MarkStack::initializePagesize() +{ + MarkStack::s_pageSize = getpagesize(); +} + +void* MarkStack::allocateStack(size_t size) +{ + return mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); +} +void MarkStack::releaseStack(void* addr, size_t size) +{ + munmap(addr, size); +} + +} |