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Fast TLS support on mac.

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Review URL: http://codereview.chromium.org/6724028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7377 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
vitalyr@chromium.org 2011-03-27 18:40:48 +00:00
parent 39faabf198
commit 7a74560fcc
4 changed files with 67 additions and 0 deletions
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62
src/platform-tls-mac.h Normal file
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@ -0,0 +1,62 @@
// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 THE COPYRIGHT
// OWNER 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.
#ifndef V8_PLATFORM_TLS_MAC_H_
#define V8_PLATFORM_TLS_MAC_H_
#include "globals.h"
namespace v8 {
namespace internal {
#if defined(V8_HOST_ARCH_IA32) || defined(V8_HOST_ARCH_X64)
#define V8_FAST_TLS_SUPPORTED 1
INLINE(intptr_t InternalGetExistingThreadLocal(intptr_t index));
inline intptr_t InternalGetExistingThreadLocal(intptr_t index) {
// The constants below are taken from pthreads.s from the XNU kernel
// sources archive at www.opensource.apple.com.
intptr_t result;
#if defined(V8_HOST_ARCH_IA32)
asm("movl %%gs:0x48(,%1,4), %0;"
:"=r"(result) // Output must be a writable register.
:"0"(index)); // Input is the same as output.
#else
asm("movq %%gs:0x60(,%1,8), %0;"
:"=r"(result)
:"0"(index));
#endif
return result;
}
#endif
} } // namespace v8::internal
#endif // V8_PLATFORM_TLS_MAC_H_

2
src/platform-tls.h
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@ -41,6 +41,8 @@
#if defined(_MSC_VER) && (defined(_WIN32) || defined(_WIN64))
#include "platform-tls-win32.h"
#elif defined(__APPLE__)
#include "platform-tls-mac.h"
#endif
#endif

1
tools/gyp/v8.gyp
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@ -438,6 +438,7 @@
'../../src/objects.h',
'../../src/parser.cc',
'../../src/parser.h',
'../../src/platform-tls-mac.h',
'../../src/platform-tls-win32.h',
'../../src/platform-tls.h',
'../../src/platform.h',

2
tools/v8.xcodeproj/project.pbxproj
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@ -915,6 +915,7 @@
89FB0E360F8E531900B04B3C /* d8-posix.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = "d8-posix.cc"; path = "../src/d8-posix.cc"; sourceTree = "<group>"; };
89FB0E370F8E531900B04B3C /* d8-windows.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = "d8-windows.cc"; path = "../src/d8-windows.cc"; sourceTree = "<group>"; };
9C1F8E1D133906180068B362 /* small-pointer-list.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "small-pointer-list.h"; sourceTree = "<group>"; };
9C76176D133FB7740057370B /* platform-tls-mac.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "platform-tls-mac.h"; sourceTree = "<group>"; };
9C8E8061133CF772004058A5 /* platform-tls.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "platform-tls.h"; sourceTree = "<group>"; };
9F11D99E105AF0A300EBE5B2 /* heap-profiler.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = "heap-profiler.cc"; sourceTree = "<group>"; };
9F11D99F105AF0A300EBE5B2 /* heap-profiler.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "heap-profiler.h"; sourceTree = "<group>"; };
@ -1239,6 +1240,7 @@
897FF1670E719B8F00D62E90 /* platform-macos.cc */,
897FF1680E719B8F00D62E90 /* platform-nullos.cc */,
893A72230F7B0FF200303DD2 /* platform-posix.cc */,
9C76176D133FB7740057370B /* platform-tls-mac.h */,
9C8E8061133CF772004058A5 /* platform-tls.h */,
897FF1690E719B8F00D62E90 /* platform-win32.cc */,
897FF16A0E719B8F00D62E90 /* platform.h */,