source: webkit/trunk/JavaScriptCore/VM/RegisterFile.cpp@ 37213

Last change on this file since 37213 was 37213, checked in by [email protected], 17 years ago

2008-10-02 Cameron Zwarich <[email protected]>

Reviewed by Geoff Garen.

Bug 21317: Replace RegisterFile size and capacity information with Register pointers
<https://bugs.webkit.org/show_bug.cgi?id=21317>

This is a 2.3% speedup on the V8 DeltaBlue benchmark, a 3.3% speedup on
the V8 Raytrace benchmark, and a 1.0% speedup on SunSpider.

  • VM/Machine.cpp: (JSC::slideRegisterWindowForCall): (JSC::Machine::callEval): (JSC::Machine::execute): (JSC::Machine::privateExecute): (JSC::Machine::cti_op_call_JSFunction): (JSC::Machine::cti_op_construct_JSConstruct):
  • VM/RegisterFile.cpp: (JSC::RegisterFile::~RegisterFile):
  • VM/RegisterFile.h: (JSC::RegisterFile::RegisterFile): (JSC::RegisterFile::start): (JSC::RegisterFile::end): (JSC::RegisterFile::size): (JSC::RegisterFile::shrink): (JSC::RegisterFile::grow): (JSC::RegisterFile::lastGlobal): (JSC::RegisterFile::markGlobals): (JSC::RegisterFile::markCallFrames):
  • kjs/JSGlobalObject.cpp: (JSC::JSGlobalObject::copyGlobalsTo):
File size: 1.9 KB
Line 
1/*
2 * Copyright (C) 2008 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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30#include "RegisterFile.h"
31
32namespace JSC {
33
34RegisterFile::~RegisterFile()
35{
36#if HAVE(MMAP)
37 munmap(m_buffer, ((m_max - m_start) + m_maxGlobals) * sizeof(Register));
38#elif HAVE(VIRTUALALLOC)
39 // FIXME: Use VirtualFree.
40 fastFree(m_buffer);
41#else
42 #error "Don't know how to release virtual memory on this platform."
43#endif
44}
45
46} // namespace JSC
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