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skia2/include/core/SkPostConfig.h
george@mozilla.com 2d9526715e Add a default value for SK_OVERRIDE in SkPostConfig.h 
Review URL: https://chromiumcodereview.appspot.com/22288002

git-svn-id: http://skia.googlecode.com/svn/trunk@10576 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-08-06 18:35:00 +00:00

394 lines
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C
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/*
* 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
#if defined(SK_SCALAR_IS_FIXED) && defined(SK_SCALAR_IS_FLOAT)
#error "cannot define both SK_SCALAR_IS_FIXED and SK_SCALAR_IS_FLOAT"
#elif !defined(SK_SCALAR_IS_FIXED) && !defined(SK_SCALAR_IS_FLOAT)
#define SK_SCALAR_IS_FLOAT
#endif
#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)
// default is double, as that is faster given our impl uses doubles
// for intermediate calculations.
#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 these, 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 defaults to 1 in DEBUG and 0 in RELEASE
#ifndef SK_ENABLE_INST_COUNT
#ifdef SK_DEBUG
// FIXME: fails if multiple threads run at once (see skbug.com/1219 )
#define SK_ENABLE_INST_COUNT 0
#else
#define SK_ENABLE_INST_COUNT 0
#endif
#endif
///////////////////////////////////////////////////////////////////////////////
#if defined(SK_SOFTWARE_FLOAT) && defined(SK_SCALAR_IS_FLOAT)
// if this is defined, we convert floats to 2scompliment ints for compares
#ifndef SK_SCALAR_SLOW_COMPARES
#define SK_SCALAR_SLOW_COMPARES
#endif
#ifndef SK_USE_FLOATBITS
#define SK_USE_FLOATBITS
#endif
#endif
#ifdef SK_BUILD_FOR_WIN
// we want lean_and_mean when we include windows.h
#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(cond) do { if (!(cond)) { 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
/**
* 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
// stdlib macros
#if 0
#if !defined(strlen) && defined(SK_DEBUG)
extern size_t sk_strlen(const char*);
#define strlen(s) sk_strlen(s)
#endif
#ifndef sk_strcpy
#define sk_strcpy(dst, src) strcpy(dst, src)
#endif
#ifndef sk_strchr
#define sk_strchr(s, c) strchr(s, c)
#endif
#ifndef sk_strrchr
#define sk_strrchr(s, c) strrchr(s, c)
#endif
#ifndef sk_strcmp
#define sk_strcmp(s, t) strcmp(s, t)
#endif
#ifndef sk_strncmp
#define sk_strncmp(s, t, n) strncmp(s, t, n)
#endif
#ifndef sk_memcpy
#define sk_memcpy(dst, src, n) memcpy(dst, src, n)
#endif
#ifndef memmove
#define memmove(dst, src, n) memmove(dst, src, n)
#endif
#ifndef sk_memset
#define sk_memset(dst, val, n) memset(dst, val, n)
#endif
#ifndef sk_memcmp
#define sk_memcmp(s, t, n) memcmp(s, t, n)
#endif
#define sk_strequal(s, t) (!sk_strcmp(s, t))
#define sk_strnequal(s, t, n) (!sk_strncmp(s, t, n))
#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
//#define _CRTDBG_MAP_ALLOC
#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 // _DEBUG
#endif
#endif
//////////////////////////////////////////////////////////////////////
#ifndef SK_OVERRIDE
#if defined(_MSC_VER)
#define SK_OVERRIDE override
#elif defined(__clang__)
// 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)
// Some documentation suggests we should be using __attribute__((override)),
// but it doesn't work.
#define SK_OVERRIDE override
#elif defined(__has_extension)
#if __has_extension(cxx_override_control)
#define SK_OVERRIDE override
#endif
#endif
#endif
#ifndef SK_OVERRIDE
#define SK_OVERRIDE
#endif
#endif
//////////////////////////////////////////////////////////////////////
#if !defined(SK_UNUSED)
#define SK_UNUSED SK_ATTRIBUTE(unused)
#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
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