SkPostConfig.h revision 7fd1f50bfb9af23c7c1f7e8450f5a0db67ca5fdc 
1/*
2 * Copyright 2006 The Android Open Source Project
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkPostConfig_DEFINED
9#define SkPostConfig_DEFINED
10
11#if defined(SK_BUILD_FOR_WIN32) || defined(SK_BUILD_FOR_WINCE)
12#  define SK_BUILD_FOR_WIN
13#endif
14
15#if defined(SK_DEBUG) && defined(SK_RELEASE)
16#  error "cannot define both SK_DEBUG and SK_RELEASE"
17#elif !defined(SK_DEBUG) && !defined(SK_RELEASE)
18#  error "must define either SK_DEBUG or SK_RELEASE"
19#endif
20
21#if defined(SK_SUPPORT_UNITTEST) && !defined(SK_DEBUG)
22#  error "can't have unittests without debug"
23#endif
24
25#if defined(SK_SCALAR_IS_FIXED) && defined(SK_SCALAR_IS_FLOAT)
26#  error "cannot define both SK_SCALAR_IS_FIXED and SK_SCALAR_IS_FLOAT"
27#elif !defined(SK_SCALAR_IS_FIXED) && !defined(SK_SCALAR_IS_FLOAT)
28#  define SK_SCALAR_IS_FLOAT
29#endif
30
31/**
32 * Matrix calculations may be float or double.
33 * The default is double, as that is faster given our impl uses doubles
34 * for intermediate calculations.
35 */
36#if defined(SK_MSCALAR_IS_DOUBLE) && defined(SK_MSCALAR_IS_FLOAT)
37#  error "cannot define both SK_MSCALAR_IS_DOUBLE and SK_MSCALAR_IS_FLOAT"
38#elif !defined(SK_MSCALAR_IS_DOUBLE) && !defined(SK_MSCALAR_IS_FLOAT)
39#  define SK_MSCALAR_IS_DOUBLE
40#endif
41
42#if defined(SK_CPU_LENDIAN) && defined(SK_CPU_BENDIAN)
43#  error "cannot define both SK_CPU_LENDIAN and SK_CPU_BENDIAN"
44#elif !defined(SK_CPU_LENDIAN) && !defined(SK_CPU_BENDIAN)
45#  error "must define either SK_CPU_LENDIAN or SK_CPU_BENDIAN"
46#endif
47
48/**
49 * Ensure the port has defined all of SK_X32_SHIFT, or none of them.
50 */
51#ifdef SK_A32_SHIFT
52#  if !defined(SK_R32_SHIFT) || !defined(SK_G32_SHIFT) || !defined(SK_B32_SHIFT)
53#    error "all or none of the 32bit SHIFT amounts must be defined"
54#  endif
55#else
56#  if defined(SK_R32_SHIFT) || defined(SK_G32_SHIFT) || defined(SK_B32_SHIFT)
57#    error "all or none of the 32bit SHIFT amounts must be defined"
58#  endif
59#endif
60
61#if !defined(SK_HAS_COMPILER_FEATURE)
62#  if defined(__has_feature)
63#    define SK_HAS_COMPILER_FEATURE(x) __has_feature(x)
64#  else
65#    define SK_HAS_COMPILER_FEATURE(x) 0
66#  endif
67#endif
68
69#if !defined(SK_ATTRIBUTE)
70#  if defined(__clang__) || defined(__GNUC__)
71#    define SK_ATTRIBUTE(attr) __attribute__((attr))
72#  else
73#    define SK_ATTRIBUTE(attr)
74#  endif
75#endif
76
77#if !defined(SK_SUPPORT_GPU)
78#  define SK_SUPPORT_GPU 1
79#endif
80
81/**
82 * The clang static analyzer likes to know that when the program is not
83 * expected to continue (crash, assertion failure, etc). It will notice that
84 * some combination of parameters lead to a function call that does not return.
85 * It can then make appropriate assumptions about the parameters in code
86 * executed only if the non-returning function was *not* called.
87 */
88#if !defined(SkNO_RETURN_HINT)
89#  if SK_HAS_COMPILER_FEATURE(attribute_analyzer_noreturn)
90     static inline void SkNO_RETURN_HINT() __attribute__((analyzer_noreturn));
91     static inline void SkNO_RETURN_HINT() {}
92#  else
93#    define SkNO_RETURN_HINT() do {} while (false)
94#  endif
95#endif
96
97#if defined(SK_ZLIB_INCLUDE) && defined(SK_SYSTEM_ZLIB)
98#  error "cannot define both SK_ZLIB_INCLUDE and SK_SYSTEM_ZLIB"
99#elif defined(SK_ZLIB_INCLUDE) || defined(SK_SYSTEM_ZLIB)
100#  define SK_HAS_ZLIB
101#endif
102
103///////////////////////////////////////////////////////////////////////////////
104
105#ifndef SkNEW
106#  define SkNEW(type_name)                           (new type_name)
107#  define SkNEW_ARGS(type_name, args)                (new type_name args)
108#  define SkNEW_ARRAY(type_name, count)              (new type_name[(count)])
109#  define SkNEW_PLACEMENT(buf, type_name)            (new (buf) type_name)
110#  define SkNEW_PLACEMENT_ARGS(buf, type_name, args) (new (buf) type_name args)
111#  define SkDELETE(obj)                              (delete (obj))
112#  define SkDELETE_ARRAY(array)                      (delete[] (array))
113#endif
114
115#ifndef SK_CRASH
116#  if 1   // set to 0 for infinite loop, which can help connecting gdb
117#    define SK_CRASH() do { SkNO_RETURN_HINT(); *(int *)(uintptr_t)0xbbadbeef = 0; } while (false)
118#  else
119#    define SK_CRASH() do { SkNO_RETURN_HINT(); } while (true)
120#  endif
121#endif
122
123///////////////////////////////////////////////////////////////////////////////
124
125/**
126 * SK_ENABLE_INST_COUNT controlls printing how many reference counted objects
127 * are still held on exit.
128 * Defaults to 1 in DEBUG and 0 in RELEASE.
129 * FIXME: currently always 0, since it fails if multiple threads run at once
130 * (see skbug.com/1219 ).
131 */
132#ifndef SK_ENABLE_INST_COUNT
133#  ifdef SK_DEBUG
134#    define SK_ENABLE_INST_COUNT 0
135#  else
136#    define SK_ENABLE_INST_COUNT 0
137#  endif
138#endif
139
140///////////////////////////////////////////////////////////////////////////////
141
142#if defined(SK_SOFTWARE_FLOAT) && defined(SK_SCALAR_IS_FLOAT)
143   // if this is defined, we convert floats to 2s compliment ints for compares.
144#  ifndef SK_SCALAR_SLOW_COMPARES
145#    define SK_SCALAR_SLOW_COMPARES
146#  endif
147#  ifndef SK_USE_FLOATBITS
148#    define SK_USE_FLOATBITS
149#  endif
150#endif
151
152#ifdef SK_BUILD_FOR_WIN
153#  ifndef WIN32_LEAN_AND_MEAN
154#    define WIN32_LEAN_AND_MEAN
155#    define WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
156#  endif
157#  ifndef NOMINMAX
158#    define NOMINMAX
159#    define NOMINMAX_WAS_LOCALLY_DEFINED
160#  endif
161#
162#  include <windows.h>
163#
164#  ifdef WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
165#    undef WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
166#    undef WIN32_LEAN_AND_MEAN
167#  endif
168#  ifdef NOMINMAX_WAS_LOCALLY_DEFINED
169#    undef NOMINMAX_WAS_LOCALLY_DEFINED
170#    undef NOMINMAX
171#  endif
172#
173#  ifndef SK_DEBUGBREAK
174#    define SK_DEBUGBREAK(p) do { if (!(p)) { SkNO_RETURN_HINT(); __debugbreak(); }} while (false)
175#  endif
176#
177#  ifndef SK_A32_SHIFT
178#    define SK_A32_SHIFT 24
179#    define SK_R32_SHIFT 16
180#    define SK_G32_SHIFT 8
181#    define SK_B32_SHIFT 0
182#  endif
183#
184#else
185#  ifdef SK_DEBUG
186#    include <stdio.h>
187#    ifndef SK_DEBUGBREAK
188#      define SK_DEBUGBREAK(cond) do { if (cond) break; \
189                SkDebugf("%s:%d: failed assertion \"%s\"\n", \
190                __FILE__, __LINE__, #cond); SK_CRASH(); } while (false)
191#    endif
192#  endif
193#endif
194
195/**
196 *  We check to see if the SHIFT value has already been defined.
197 *  if not, we define it ourself to some default values. We default to OpenGL
198 *  order (in memory: r,g,b,a)
199 */
200#ifndef SK_A32_SHIFT
201#  ifdef SK_CPU_BENDIAN
202#    define SK_R32_SHIFT    24
203#    define SK_G32_SHIFT    16
204#    define SK_B32_SHIFT    8
205#    define SK_A32_SHIFT    0
206#  else
207#    define SK_R32_SHIFT    0
208#    define SK_G32_SHIFT    8
209#    define SK_B32_SHIFT    16
210#    define SK_A32_SHIFT    24
211#  endif
212#endif
213
214/**
215 * SkColor has well defined shift values, but SkPMColor is configurable. This
216 * macro is a convenience that returns true if the shift values are equal while
217 * ignoring the machine's endianness.
218 */
219#define SK_COLOR_MATCHES_PMCOLOR_BYTE_ORDER \
220    (SK_A32_SHIFT == 24 && SK_R32_SHIFT == 16 && SK_G32_SHIFT == 8 && SK_B32_SHIFT == 0)
221
222/**
223 * SK_PMCOLOR_BYTE_ORDER can be used to query the byte order of SkPMColor at compile time. The
224 * relationship between the byte order and shift values depends on machine endianness. If the shift
225 * order is R=0, G=8, B=16, A=24 then ((char*)&pmcolor)[0] will produce the R channel on a little
226 * endian machine and the A channel on a big endian machine. Thus, given those shifts values,
227 * SK_PMCOLOR_BYTE_ORDER(R,G,B,A) will be true on a little endian machine and
228 * SK_PMCOLOR_BYTE_ORDER(A,B,G,R) will be true on a big endian machine.
229 */
230#ifdef SK_CPU_BENDIAN
231#  define SK_PMCOLOR_BYTE_ORDER(C0, C1, C2, C3)     \
232        (SK_ ## C3 ## 32_SHIFT == 0  &&             \
233         SK_ ## C2 ## 32_SHIFT == 8  &&             \
234         SK_ ## C1 ## 32_SHIFT == 16 &&             \
235         SK_ ## C0 ## 32_SHIFT == 24)
236#else
237#  define SK_PMCOLOR_BYTE_ORDER(C0, C1, C2, C3)     \
238        (SK_ ## C0 ## 32_SHIFT == 0  &&             \
239         SK_ ## C1 ## 32_SHIFT == 8  &&             \
240         SK_ ## C2 ## 32_SHIFT == 16 &&             \
241         SK_ ## C3 ## 32_SHIFT == 24)
242#endif
243
244//////////////////////////////////////////////////////////////////////
245
246#if defined(SK_BUILD_FOR_WIN32) || defined(SK_BUILD_FOR_MAC)
247#  ifndef SkLONGLONG
248#    ifdef SK_BUILD_FOR_WIN32
249#      define SkLONGLONG __int64
250#    else
251#      define SkLONGLONG long long
252#    endif
253#  endif
254#endif
255
256//////////////////////////////////////////////////////////////////////////////////////////////
257#ifndef SK_BUILD_FOR_WINCE
258#  include <string.h>
259#  include <stdlib.h>
260#else
261#  define _CMNINTRIN_DECLARE_ONLY
262#  include "cmnintrin.h"
263#endif
264
265#if defined SK_DEBUG && defined SK_BUILD_FOR_WIN32
266#  ifdef free
267#    undef free
268#  endif
269#  include <crtdbg.h>
270#  undef free
271#
272#  ifdef SK_DEBUGx
273#    if defined(SK_SIMULATE_FAILED_MALLOC) && defined(__cplusplus)
274       void * operator new(
275           size_t cb,
276           int nBlockUse,
277           const char * szFileName,
278           int nLine,
279           int foo
280           );
281       void * operator new[](
282           size_t cb,
283           int nBlockUse,
284           const char * szFileName,
285           int nLine,
286           int foo
287           );
288       void operator delete(
289           void *pUserData,
290           int, const char*, int, int
291           );
292       void operator delete(
293           void *pUserData
294           );
295       void operator delete[]( void * p );
296#      define DEBUG_CLIENTBLOCK   new( _CLIENT_BLOCK, __FILE__, __LINE__, 0)
297#    else
298#      define DEBUG_CLIENTBLOCK   new( _CLIENT_BLOCK, __FILE__, __LINE__)
299#    endif
300#    define new DEBUG_CLIENTBLOCK
301#  else
302#    define DEBUG_CLIENTBLOCK
303#  endif
304#endif
305
306//////////////////////////////////////////////////////////////////////
307
308#ifndef SK_OVERRIDE
309#  if defined(_MSC_VER)
310#    define SK_OVERRIDE override
311#  elif defined(__clang__)
312     // Using __attribute__((override)) on clang does not appear to always work.
313     // Clang defaults to C++03 and warns about using override. Squelch that. Intentionally no
314     // push/pop here so all users of SK_OVERRIDE ignore the warning too. This is like passing
315     // -Wno-c++11-extensions, except that GCC won't die (because it won't see this pragma).
316#    pragma clang diagnostic ignored "-Wc++11-extensions"
317#
318#    if __has_feature(cxx_override_control)
319#      define SK_OVERRIDE override
320#    elif defined(__has_extension) && __has_extension(cxx_override_control)
321#      define SK_OVERRIDE override
322#    endif
323#  endif
324#  ifndef SK_OVERRIDE
325#    define SK_OVERRIDE
326#  endif
327#endif
328
329//////////////////////////////////////////////////////////////////////
330
331#if !defined(SK_UNUSED)
332#  define SK_UNUSED SK_ATTRIBUTE(unused)
333#endif
334
335#if !defined(SK_ATTR_DEPRECATED)
336   // FIXME: we ignore msg for now...
337#  define SK_ATTR_DEPRECATED(msg) SK_ATTRIBUTE(deprecated)
338#endif
339
340/**
341 * If your judgment is better than the compiler's (i.e. you've profiled it),
342 * you can use SK_ALWAYS_INLINE to force inlining. E.g.
343 *     inline void someMethod() { ... }             // may not be inlined
344 *     SK_ALWAYS_INLINE void someMethod() { ... }   // should always be inlined
345 */
346#if !defined(SK_ALWAYS_INLINE)
347#  if defined(SK_BUILD_FOR_WIN)
348#    define SK_ALWAYS_INLINE __forceinline
349#  else
350#    define SK_ALWAYS_INLINE SK_ATTRIBUTE(always_inline) inline
351#  endif
352#endif
353
354//////////////////////////////////////////////////////////////////////
355
356#if defined(__clang__) || defined(__GNUC__)
357#  define SK_PREFETCH(ptr) __builtin_prefetch(ptr)
358#  define SK_WRITE_PREFETCH(ptr) __builtin_prefetch(ptr, 1)
359#else
360#  define SK_PREFETCH(ptr)
361#  define SK_WRITE_PREFETCH(ptr)
362#endif
363
364//////////////////////////////////////////////////////////////////////
365
366#ifndef SK_PRINTF_LIKE
367#  if defined(__clang__) || defined(__GNUC__)
368#    define SK_PRINTF_LIKE(A, B) __attribute__((format(printf, (A), (B))))
369#  else
370#    define SK_PRINTF_LIKE(A, B)
371#  endif
372#endif
373
374//////////////////////////////////////////////////////////////////////
375
376#ifndef SK_SIZE_T_SPECIFIER
377#  if defined(_MSC_VER)
378#    define SK_SIZE_T_SPECIFIER "%Iu"
379#  else
380#    define SK_SIZE_T_SPECIFIER "%zu"
381#  endif
382#endif
383
384//////////////////////////////////////////////////////////////////////
385
386#ifndef SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
387#  define SK_ALLOW_STATIC_GLOBAL_INITIALIZERS 1
388#endif
389
390#endif // SkPostConfig_DEFINED
391