Source/wtf/Platform.h - chromium/blink - Git at Google

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  * Copyright (C) 2010, 2011 Research In Motion Limited. 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 COMPUTER, 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 COMPUTER, 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.
  */

 #ifndef WTF_Platform_h
 #define WTF_Platform_h

 /* Include compiler specific macros */
 #include <wtf/Compiler.h>

 /* ==== Platform adaptation macros: these describe properties of the target environment. ==== */

 /* HAVE() - specific system features (headers, functions or similar) that are present or not */
 #define HAVE(WTF_FEATURE) (defined HAVE_##WTF_FEATURE  && HAVE_##WTF_FEATURE)
 /* OS() - underlying operating system; only to be used for mandated low-level services like
    virtual memory, not to choose a GUI toolkit */
 #define OS(WTF_FEATURE) (defined WTF_OS_##WTF_FEATURE  && WTF_OS_##WTF_FEATURE)

 /* ==== Policy decision macros: these define policy choices for a particular port. ==== */

 /* USE() - use a particular third-party library or optional OS service */
 #define USE(WTF_FEATURE) (defined WTF_USE_##WTF_FEATURE  && WTF_USE_##WTF_FEATURE)
 /* ENABLE() - turn on a specific feature of WebKit */
 #define ENABLE(WTF_FEATURE) (defined ENABLE_##WTF_FEATURE  && ENABLE_##WTF_FEATURE)

 /* ==== OS() - underlying operating system; only to be used for mandated low-level services like
    virtual memory, not to choose a GUI toolkit ==== */

 /* OS(ANDROID) - Android */
 #ifdef ANDROID
 #define WTF_OS_ANDROID 1
 #endif

 /* OS(DARWIN) - Any Darwin-based OS, including Mac OS X and iPhone OS */
 #ifdef __APPLE__
 #define WTF_OS_DARWIN 1

 #include <AvailabilityMacros.h>
 #endif

 /* OS(FREEBSD) - FreeBSD */
 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
 #define WTF_OS_FREEBSD 1
 #endif

 /* OS(HURD) - GNU/Hurd */
 #ifdef __GNU__
 #define WTF_OS_HURD 1
 #endif

 /* OS(LINUX) - Linux */
 #ifdef __linux__
 #define WTF_OS_LINUX 1
 #endif

 /* OS(NETBSD) - NetBSD */
 #if defined(__NetBSD__)
 #define WTF_OS_NETBSD 1
 #endif

 /* OS(OPENBSD) - OpenBSD */
 #ifdef __OpenBSD__
 #define WTF_OS_OPENBSD 1
 #endif

 /* OS(SOLARIS) - Solaris */
 #if defined(sun) || defined(__sun)
 #define WTF_OS_SOLARIS 1
 #endif

 /* OS(WINDOWS) - Any version of Windows */
 #if defined(WIN32) || defined(_WIN32)
 #define WTF_OS_WINDOWS 1
 #endif

 /* OS(UNIX) - Any Unix-like system */
 #if OS(ANDROID)          \
     || OS(DARWIN)           \
     || OS(FREEBSD)          \
     || OS(HURD)             \
     || OS(LINUX)            \
     || OS(NETBSD)           \
     || OS(OPENBSD)          \
     || OS(SOLARIS)          \
     || defined(unix)        \
     || defined(__unix)      \
     || defined(__unix__)
 #define WTF_OS_UNIX 1
 #endif

 /* Operating environments */

 #if OS(ANDROID)
 #define WTF_USE_LOW_QUALITY_IMAGE_INTERPOLATION 1
 #define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_DITHERING 1
 #define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_FANCY_UPSAMPLING 1
 #else
 #define WTF_USE_ICCJPEG 1
 #define WTF_USE_QCMSLIB 1
 #endif

 #if OS(DARWIN)
 #define WTF_USE_CF 1

 /* We can't override the global operator new and delete on OS(DARWIN) because
  * some object are allocated by WebKit and deallocated by the embedder. */
 #else /* !OS(DARWIN) */
 /* On non-OS(DARWIN), the "system malloc" is actually TCMalloc anyway, so there's
  * no need to use WebKit's copy of TCMalloc. */
 #define WTF_USE_SYSTEM_MALLOC 1
 #endif /* OS(DARWIN) */

 #if OS(DARWIN)
 #define ENABLE_PURGEABLE_MEMORY 1
 #endif /* OS(DARWIN) */

 #if !defined(HAVE_ACCESSIBILITY)
 #if !OS(ANDROID)
 #define HAVE_ACCESSIBILITY 1
 #endif
 #endif /* !defined(HAVE_ACCESSIBILITY) */

 #if OS(UNIX)
 #define HAVE_ERRNO_H 1
 #define HAVE_MMAP 1
 #define HAVE_SIGNAL_H 1
 #define HAVE_STRINGS_H 1
 #define HAVE_SYS_TIME_H 1
 #define WTF_USE_PTHREADS 1
 #endif /* OS(UNIX) */

 #if (OS(FREEBSD) || OS(OPENBSD)) && !defined(__GLIBC__)
 #define HAVE_PTHREAD_NP_H 1
 #endif

 #if !defined(HAVE_VASPRINTF)
 #if !COMPILER(MSVC) && !COMPILER(MINGW)
 #define HAVE_VASPRINTF 1
 #endif
 #endif

 #if !defined(HAVE_STRNSTR)
 #if OS(DARWIN) || (OS(FREEBSD) && !defined(__GLIBC__))
 #define HAVE_STRNSTR 1
 #endif
 #endif

 #if !OS(WINDOWS) && !OS(SOLARIS) && !OS(ANDROID)
 #define HAVE_TM_GMTOFF 1
 #define HAVE_TM_ZONE 1
 #define HAVE_TIMEGM 1
 #endif

 #if OS(DARWIN)
 #define HAVE_SYS_TIMEB_H 1
 #define HAVE_DISPATCH_H 1
 #define HAVE_MADV_FREE 1
 #define HAVE_PTHREAD_SETNAME_NP 1
 #define HAVE_MADV_FREE_REUSE 1
 #endif /* OS(DARWIN) */

 #if OS(WINDOWS)
 #define HAVE_SYS_TIMEB_H 1
 #define HAVE_ALIGNED_MALLOC 1
 #define HAVE_ISDEBUGGERPRESENT 1
 #define HAVE_VIRTUALALLOC 1
 #endif

 #endif /* WTF_Platform_h */
	/*
	* Copyright (C) 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
	* Copyright (C) 2007-2009 Torch Mobile, Inc.
	* Copyright (C) 2010, 2011 Research In Motion Limited. 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 COMPUTER, 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 COMPUTER, 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.
	*/

	#ifndef WTF_Platform_h
	#define WTF_Platform_h

	/* Include compiler specific macros */
	#include <wtf/Compiler.h>

	/* ==== Platform adaptation macros: these describe properties of the target environment. ==== */

	/* HAVE() - specific system features (headers, functions or similar) that are present or not */
	#define HAVE(WTF_FEATURE) (defined HAVE_##WTF_FEATURE && HAVE_##WTF_FEATURE)
	/* OS() - underlying operating system; only to be used for mandated low-level services like
	virtual memory, not to choose a GUI toolkit */
	#define OS(WTF_FEATURE) (defined WTF_OS_##WTF_FEATURE && WTF_OS_##WTF_FEATURE)

	/* ==== Policy decision macros: these define policy choices for a particular port. ==== */

	/* USE() - use a particular third-party library or optional OS service */
	#define USE(WTF_FEATURE) (defined WTF_USE_##WTF_FEATURE && WTF_USE_##WTF_FEATURE)
	/* ENABLE() - turn on a specific feature of WebKit */
	#define ENABLE(WTF_FEATURE) (defined ENABLE_##WTF_FEATURE && ENABLE_##WTF_FEATURE)

	/* ==== OS() - underlying operating system; only to be used for mandated low-level services like
	virtual memory, not to choose a GUI toolkit ==== */

	/* OS(ANDROID) - Android */
	#ifdef ANDROID
	#define WTF_OS_ANDROID 1
	#endif

	/* OS(DARWIN) - Any Darwin-based OS, including Mac OS X and iPhone OS */
	#ifdef __APPLE__
	#define WTF_OS_DARWIN 1

	#include <AvailabilityMacros.h>
	#endif

	/* OS(FREEBSD) - FreeBSD */
	#if defined(__FreeBSD__) \|\| defined(__DragonFly__) \|\| defined(__FreeBSD_kernel__)
	#define WTF_OS_FREEBSD 1
	#endif

	/* OS(HURD) - GNU/Hurd */
	#ifdef __GNU__
	#define WTF_OS_HURD 1
	#endif

	/* OS(LINUX) - Linux */
	#ifdef __linux__
	#define WTF_OS_LINUX 1
	#endif

	/* OS(NETBSD) - NetBSD */
	#if defined(__NetBSD__)
	#define WTF_OS_NETBSD 1
	#endif

	/* OS(OPENBSD) - OpenBSD */
	#ifdef __OpenBSD__
	#define WTF_OS_OPENBSD 1
	#endif

	/* OS(SOLARIS) - Solaris */
	#if defined(sun) \|\| defined(__sun)
	#define WTF_OS_SOLARIS 1
	#endif

	/* OS(WINDOWS) - Any version of Windows */
	#if defined(WIN32) \|\| defined(_WIN32)
	#define WTF_OS_WINDOWS 1
	#endif

	/* OS(UNIX) - Any Unix-like system */
	#if OS(ANDROID) \
	\|\| OS(DARWIN) \
	\|\| OS(FREEBSD) \
	\|\| OS(HURD) \
	\|\| OS(LINUX) \
	\|\| OS(NETBSD) \
	\|\| OS(OPENBSD) \
	\|\| OS(SOLARIS) \
	\|\| defined(unix) \
	\|\| defined(__unix) \
	\|\| defined(__unix__)
	#define WTF_OS_UNIX 1
	#endif

	/* Operating environments */

	#if OS(ANDROID)
	#define WTF_USE_LOW_QUALITY_IMAGE_INTERPOLATION 1
	#define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_DITHERING 1
	#define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_FANCY_UPSAMPLING 1
	#else
	#define WTF_USE_ICCJPEG 1
	#define WTF_USE_QCMSLIB 1
	#endif

	#if OS(DARWIN)
	#define WTF_USE_CF 1

	/* We can't override the global operator new and delete on OS(DARWIN) because
	* some object are allocated by WebKit and deallocated by the embedder. */
	#else /* !OS(DARWIN) */
	/* On non-OS(DARWIN), the "system malloc" is actually TCMalloc anyway, so there's
	* no need to use WebKit's copy of TCMalloc. */
	#define WTF_USE_SYSTEM_MALLOC 1
	#endif /* OS(DARWIN) */

	#if OS(DARWIN)
	#define ENABLE_PURGEABLE_MEMORY 1
	#endif /* OS(DARWIN) */

	#if !defined(HAVE_ACCESSIBILITY)
	#if !OS(ANDROID)
	#define HAVE_ACCESSIBILITY 1
	#endif
	#endif /* !defined(HAVE_ACCESSIBILITY) */

	#if OS(UNIX)
	#define HAVE_ERRNO_H 1
	#define HAVE_MMAP 1
	#define HAVE_SIGNAL_H 1
	#define HAVE_STRINGS_H 1
	#define HAVE_SYS_TIME_H 1
	#define WTF_USE_PTHREADS 1
	#endif /* OS(UNIX) */

	#if (OS(FREEBSD) \|\| OS(OPENBSD)) && !defined(__GLIBC__)
	#define HAVE_PTHREAD_NP_H 1
	#endif

	#if !defined(HAVE_VASPRINTF)
	#if !COMPILER(MSVC) && !COMPILER(MINGW)
	#define HAVE_VASPRINTF 1
	#endif
	#endif

	#if !defined(HAVE_STRNSTR)
	#if OS(DARWIN) \|\| (OS(FREEBSD) && !defined(__GLIBC__))
	#define HAVE_STRNSTR 1
	#endif
	#endif

	#if !OS(WINDOWS) && !OS(SOLARIS) && !OS(ANDROID)
	#define HAVE_TM_GMTOFF 1
	#define HAVE_TM_ZONE 1
	#define HAVE_TIMEGM 1
	#endif

	#if OS(DARWIN)
	#define HAVE_SYS_TIMEB_H 1
	#define HAVE_DISPATCH_H 1
	#define HAVE_MADV_FREE 1
	#define HAVE_PTHREAD_SETNAME_NP 1
	#define HAVE_MADV_FREE_REUSE 1
	#endif /* OS(DARWIN) */

	#if OS(WINDOWS)
	#define HAVE_SYS_TIMEB_H 1
	#define HAVE_ALIGNED_MALLOC 1
	#define HAVE_ISDEBUGGERPRESENT 1
	#define HAVE_VIRTUALALLOC 1
	#endif

	#endif /* WTF_Platform_h */