AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
1ad518bf38
skia2/include/core/SkPostConfig.h
bungeman@google.com d9947f605a Split atomic and mutex implementations and make inlinable. 
Skia cannot use Chromium's implementation of mutex (Lock) due to static
initializers. However, we would like to be able to use Chromium's
implementation of atomics. This motivates the split of implementation.

Skia's atomic and mutex calls should be inlinable, especially the atomics.
These calls often compile down to very few instructions, and we currently have
the overhead of a function call. This motivates the header implementation.

There is still a desire for the build system to select the implementation, so
the SK_XXX_PLATFORM_H pattern for header files is introduced. This allows the
build system to control which platform specific header files are chosen.

The Chromium side changes (most of which will need to go in before this change
can be found at https://codereview.chromium.org/19477005/ .
The Chromium side changes after this lands can be seen at 
https://codereview.chromium.org/98073013 .

Review URL: https://codereview.chromium.org/19808007

git-svn-id: http://skia.googlecode.com/svn/trunk@12738 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-12-18 15:27:39 +00:00

395 lines
12 KiB
C
Raw Blame History

/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPostConfig_DEFINED
#define SkPostConfig_DEFINED
#if defined(SK_BUILD_FOR_WIN32) || defined(SK_BUILD_FOR_WINCE)
# define SK_BUILD_FOR_WIN
#endif
#if defined(SK_DEBUG) && defined(SK_RELEASE)
# error "cannot define both SK_DEBUG and SK_RELEASE"
#elif !defined(SK_DEBUG) && !defined(SK_RELEASE)
# error "must define either SK_DEBUG or SK_RELEASE"
#endif
#if defined(SK_SUPPORT_UNITTEST) && !defined(SK_DEBUG)
# error "can't have unittests without debug"
#endif
/**
* Matrix calculations may be float or double.
* The default is double, as that is faster given our impl uses doubles
* for intermediate calculations.
*/
#if defined(SK_MSCALAR_IS_DOUBLE) && defined(SK_MSCALAR_IS_FLOAT)
# error "cannot define both SK_MSCALAR_IS_DOUBLE and SK_MSCALAR_IS_FLOAT"
#elif !defined(SK_MSCALAR_IS_DOUBLE) && !defined(SK_MSCALAR_IS_FLOAT)
# define SK_MSCALAR_IS_DOUBLE
#endif
#if defined(SK_CPU_LENDIAN) && defined(SK_CPU_BENDIAN)
# error "cannot define both SK_CPU_LENDIAN and SK_CPU_BENDIAN"
#elif !defined(SK_CPU_LENDIAN) && !defined(SK_CPU_BENDIAN)
# error "must define either SK_CPU_LENDIAN or SK_CPU_BENDIAN"
#endif
/**
* Ensure the port has defined all of SK_X32_SHIFT, or none of them.
*/
#ifdef SK_A32_SHIFT
# if !defined(SK_R32_SHIFT) || !defined(SK_G32_SHIFT) || !defined(SK_B32_SHIFT)
# error "all or none of the 32bit SHIFT amounts must be defined"
# endif
#else
# if defined(SK_R32_SHIFT) || defined(SK_G32_SHIFT) || defined(SK_B32_SHIFT)
# error "all or none of the 32bit SHIFT amounts must be defined"
# endif
#endif
#if !defined(SK_HAS_COMPILER_FEATURE)
# if defined(__has_feature)
# define SK_HAS_COMPILER_FEATURE(x) __has_feature(x)
# else
# define SK_HAS_COMPILER_FEATURE(x) 0
# endif
#endif
#if !defined(SK_ATTRIBUTE)
# if defined(__clang__) || defined(__GNUC__)
# define SK_ATTRIBUTE(attr) __attribute__((attr))
# else
# define SK_ATTRIBUTE(attr)
# endif
#endif
#if !defined(SK_SUPPORT_GPU)
# define SK_SUPPORT_GPU 1
#endif
/**
* The clang static analyzer likes to know that when the program is not
* expected to continue (crash, assertion failure, etc). It will notice that
* some combination of parameters lead to a function call that does not return.
* It can then make appropriate assumptions about the parameters in code
* executed only if the non-returning function was *not* called.
*/
#if !defined(SkNO_RETURN_HINT)
# if SK_HAS_COMPILER_FEATURE(attribute_analyzer_noreturn)
static inline void SkNO_RETURN_HINT() __attribute__((analyzer_noreturn));
static inline void SkNO_RETURN_HINT() {}
# else
# define SkNO_RETURN_HINT() do {} while (false)
# endif
#endif
#if defined(SK_ZLIB_INCLUDE) && defined(SK_SYSTEM_ZLIB)
# error "cannot define both SK_ZLIB_INCLUDE and SK_SYSTEM_ZLIB"
#elif defined(SK_ZLIB_INCLUDE) || defined(SK_SYSTEM_ZLIB)
# define SK_HAS_ZLIB
#endif
///////////////////////////////////////////////////////////////////////////////
#ifndef SkNEW
# define SkNEW(type_name) (new type_name)
# define SkNEW_ARGS(type_name, args) (new type_name args)
# define SkNEW_ARRAY(type_name, count) (new type_name[(count)])
# define SkNEW_PLACEMENT(buf, type_name) (new (buf) type_name)
# define SkNEW_PLACEMENT_ARGS(buf, type_name, args) (new (buf) type_name args)
# define SkDELETE(obj) (delete (obj))
# define SkDELETE_ARRAY(array) (delete[] (array))
#endif
#ifndef SK_CRASH
# if 1 // set to 0 for infinite loop, which can help connecting gdb
# define SK_CRASH() do { SkNO_RETURN_HINT(); *(int *)(uintptr_t)0xbbadbeef = 0; } while (false)
# else
# define SK_CRASH() do { SkNO_RETURN_HINT(); } while (true)
# endif
#endif
///////////////////////////////////////////////////////////////////////////////
/**
* SK_ENABLE_INST_COUNT controlls printing how many reference counted objects
* are still held on exit.
* Defaults to 1 in DEBUG and 0 in RELEASE.
* FIXME: currently always 0, since it fails if multiple threads run at once
* (see skbug.com/1219 ).
*/
#ifndef SK_ENABLE_INST_COUNT
# ifdef SK_DEBUG
# define SK_ENABLE_INST_COUNT 0
# else
# define SK_ENABLE_INST_COUNT 0
# endif
#endif
///////////////////////////////////////////////////////////////////////////////
#ifdef SK_BUILD_FOR_WIN
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# define WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
# endif
# ifndef NOMINMAX
# define NOMINMAX
# define NOMINMAX_WAS_LOCALLY_DEFINED
# endif
#
# include <windows.h>
#
# ifdef WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
# undef WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
# undef WIN32_LEAN_AND_MEAN
# endif
# ifdef NOMINMAX_WAS_LOCALLY_DEFINED
# undef NOMINMAX_WAS_LOCALLY_DEFINED
# undef NOMINMAX
# endif
#
# ifndef SK_DEBUGBREAK
# define SK_DEBUGBREAK(p) do { if (!(p)) { SkNO_RETURN_HINT(); __debugbreak(); }} while (false)
# endif
#
# ifndef SK_A32_SHIFT
# define SK_A32_SHIFT 24
# define SK_R32_SHIFT 16
# define SK_G32_SHIFT 8
# define SK_B32_SHIFT 0
# endif
#
#else
# ifdef SK_DEBUG
# include <stdio.h>
# ifndef SK_DEBUGBREAK
# define SK_DEBUGBREAK(cond) do { if (cond) break; \
SkDebugf("%s:%d: failed assertion \"%s\"\n", \
__FILE__, __LINE__, #cond); SK_CRASH(); } while (false)
# endif
# endif
#endif
/**
* We check to see if the SHIFT value has already been defined.
* if not, we define it ourself to some default values. We default to OpenGL
* order (in memory: r,g,b,a)
*/
#ifndef SK_A32_SHIFT
# ifdef SK_CPU_BENDIAN
# define SK_R32_SHIFT 24
# define SK_G32_SHIFT 16
# define SK_B32_SHIFT 8
# define SK_A32_SHIFT 0
# else
# define SK_R32_SHIFT 0
# define SK_G32_SHIFT 8
# define SK_B32_SHIFT 16
# define SK_A32_SHIFT 24
# endif
#endif
/**
* SkColor has well defined shift values, but SkPMColor is configurable. This
* macro is a convenience that returns true if the shift values are equal while
* ignoring the machine's endianness.
*/
#define SK_COLOR_MATCHES_PMCOLOR_BYTE_ORDER \
(SK_A32_SHIFT == 24 && SK_R32_SHIFT == 16 && SK_G32_SHIFT == 8 && SK_B32_SHIFT == 0)
/**
* SK_PMCOLOR_BYTE_ORDER can be used to query the byte order of SkPMColor at compile time. The
* relationship between the byte order and shift values depends on machine endianness. If the shift
* order is R=0, G=8, B=16, A=24 then ((char*)&pmcolor)[0] will produce the R channel on a little
* endian machine and the A channel on a big endian machine. Thus, given those shifts values,
* SK_PMCOLOR_BYTE_ORDER(R,G,B,A) will be true on a little endian machine and
* SK_PMCOLOR_BYTE_ORDER(A,B,G,R) will be true on a big endian machine.
*/
#ifdef SK_CPU_BENDIAN
# define SK_PMCOLOR_BYTE_ORDER(C0, C1, C2, C3) \
(SK_ ## C3 ## 32_SHIFT == 0 && \
SK_ ## C2 ## 32_SHIFT == 8 && \
SK_ ## C1 ## 32_SHIFT == 16 && \
SK_ ## C0 ## 32_SHIFT == 24)
#else
# define SK_PMCOLOR_BYTE_ORDER(C0, C1, C2, C3) \
(SK_ ## C0 ## 32_SHIFT == 0 && \
SK_ ## C1 ## 32_SHIFT == 8 && \
SK_ ## C2 ## 32_SHIFT == 16 && \
SK_ ## C3 ## 32_SHIFT == 24)
#endif
//////////////////////////////////////////////////////////////////////
#if defined(SK_BUILD_FOR_WIN32) || defined(SK_BUILD_FOR_MAC)
# ifndef SkLONGLONG
# ifdef SK_BUILD_FOR_WIN32
# define SkLONGLONG __int64
# else
# define SkLONGLONG long long
# endif
# endif
#endif
//////////////////////////////////////////////////////////////////////////////////////////////
#ifndef SK_BUILD_FOR_WINCE
# include <string.h>
# include <stdlib.h>
#else
# define _CMNINTRIN_DECLARE_ONLY
# include "cmnintrin.h"
#endif
#if defined SK_DEBUG && defined SK_BUILD_FOR_WIN32
# ifdef free
# undef free
# endif
# include <crtdbg.h>
# undef free
#
# ifdef SK_DEBUGx
# if defined(SK_SIMULATE_FAILED_MALLOC) && defined(__cplusplus)
void * operator new(
size_t cb,
int nBlockUse,
const char * szFileName,
int nLine,
int foo
);
void * operator new[](
size_t cb,
int nBlockUse,
const char * szFileName,
int nLine,
int foo
);
void operator delete(
void *pUserData,
int, const char*, int, int
);
void operator delete(
void *pUserData
);
void operator delete[]( void * p );
# define DEBUG_CLIENTBLOCK new( _CLIENT_BLOCK, __FILE__, __LINE__, 0)
# else
# define DEBUG_CLIENTBLOCK new( _CLIENT_BLOCK, __FILE__, __LINE__)
# endif
# define new DEBUG_CLIENTBLOCK
# else
# define DEBUG_CLIENTBLOCK
# endif
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_OVERRIDE
# if defined(_MSC_VER)
# define SK_OVERRIDE override
# elif defined(__clang__)
// Using __attribute__((override)) on clang does not appear to always work.
// Clang defaults to C++03 and warns about using override. Squelch that. Intentionally no
// push/pop here so all users of SK_OVERRIDE ignore the warning too. This is like passing
// -Wno-c++11-extensions, except that GCC won't die (because it won't see this pragma).
# pragma clang diagnostic ignored "-Wc++11-extensions"
#
# if __has_feature(cxx_override_control)
# define SK_OVERRIDE override
# elif defined(__has_extension) && __has_extension(cxx_override_control)
# define SK_OVERRIDE override
# endif
# endif
# ifndef SK_OVERRIDE
# define SK_OVERRIDE
# endif
#endif
//////////////////////////////////////////////////////////////////////
#if !defined(SK_UNUSED)
# define SK_UNUSED SK_ATTRIBUTE(unused)
#endif
#if !defined(SK_ATTR_DEPRECATED)
// FIXME: we ignore msg for now...
# define SK_ATTR_DEPRECATED(msg) SK_ATTRIBUTE(deprecated)
#endif
/**
* If your judgment is better than the compiler's (i.e. you've profiled it),
* you can use SK_ALWAYS_INLINE to force inlining. E.g.
* inline void someMethod() { ... } // may not be inlined
* SK_ALWAYS_INLINE void someMethod() { ... } // should always be inlined
*/
#if !defined(SK_ALWAYS_INLINE)
# if defined(SK_BUILD_FOR_WIN)
# define SK_ALWAYS_INLINE __forceinline
# else
# define SK_ALWAYS_INLINE SK_ATTRIBUTE(always_inline) inline
# endif
#endif
//////////////////////////////////////////////////////////////////////
#if defined(__clang__) || defined(__GNUC__)
# define SK_PREFETCH(ptr) __builtin_prefetch(ptr)
# define SK_WRITE_PREFETCH(ptr) __builtin_prefetch(ptr, 1)
#else
# define SK_PREFETCH(ptr)
# define SK_WRITE_PREFETCH(ptr)
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_PRINTF_LIKE
# if defined(__clang__) || defined(__GNUC__)
# define SK_PRINTF_LIKE(A, B) __attribute__((format(printf, (A), (B))))
# else
# define SK_PRINTF_LIKE(A, B)
# endif
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_SIZE_T_SPECIFIER
# if defined(_MSC_VER)
# define SK_SIZE_T_SPECIFIER "%Iu"
# else
# define SK_SIZE_T_SPECIFIER "%zu"
# endif
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
# define SK_ALLOW_STATIC_GLOBAL_INITIALIZERS 1
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_ATOMICS_PLATFORM_H
# if defined(SK_BUILD_FOR_WIN)
# define SK_ATOMICS_PLATFORM_H "../../src/ports/SkAtomics_win.h"
# elif defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
# define SK_ATOMICS_PLATFORM_H "../../src/ports/SkAtomics_android.h"
# else
# define SK_ATOMICS_PLATFORM_H "../../src/ports/SkAtomics_sync.h"
# endif
#endif
#ifndef SK_MUTEX_PLATFORM_H
# if defined(SK_BUILD_FOR_WIN)
# define SK_MUTEX_PLATFORM_H "../../src/ports/SkMutex_win.h"
# else
# define SK_MUTEX_PLATFORM_H "../../src/ports/SkMutex_pthread.h"
# endif
#endif
#endif // SkPostConfig_DEFINED
Reference in New Issue View Git Blame Copy Permalink