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1 
2 /*
3  * Copyright 2010 Google Inc.
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 
9 
10 
11 #ifndef GrConfig_DEFINED
12 #define GrConfig_DEFINED
13 
14 #include "SkTypes.h"
15 
16 ///////////////////////////////////////////////////////////////////////////////
17 // preconfig section:
18 //
19 // All the work before including GrUserConfig.h should center around guessing
20 // what platform we're on, and defining low-level symbols based on that.
21 //
22 // A build environment may have already defined symbols, so we first check
23 // for that
24 //
25 
26 // hack to ensure we know what sort of Apple platform we're on
27 #if defined(__APPLE_CPP__) || defined(__APPLE_CC__)
28     #include <TargetConditionals.h>
29 #endif
30 
31 /**
32  *  Gr defines are set to 0 or 1, rather than being undefined or defined
33  */
34 
35 #if !defined(GR_CACHE_STATS)
36   #if defined(SK_DEBUG) || defined(SK_DUMP_STATS)
37       #define GR_CACHE_STATS  1
38   #else
39       #define GR_CACHE_STATS  0
40   #endif
41 #endif
42 
43 #if !defined(GR_GPU_STATS)
44   #if defined(SK_DEBUG) || defined(SK_DUMP_STATS)
45       #define GR_GPU_STATS    1
46   #else
47       #define GR_GPU_STATS    0
48   #endif
49 #endif
50 
51 ///////////////////////////////////////////////////////////////////////////////
52 ///////////////////////////////////////////////////////////////////////////////
53 
54 #if defined(SK_BUILD_FOR_WIN32)
55 // VC8 doesn't support stdint.h, so we define those types here.
56 typedef signed char int8_t;
57 typedef unsigned char uint8_t;
58 typedef short int16_t;
59 typedef unsigned short uint16_t;
60 typedef int int32_t;
61 typedef unsigned uint32_t;
62 typedef __int64 int64_t;
63 typedef unsigned __int64 uint64_t;
64 #else
65 /*
66  *  Include stdint.h with defines that trigger declaration of C99 limit/const
67  *  macros here before anyone else has a chance to include stdint.h without
68  *  these.
69  */
70 #ifndef __STDC_LIMIT_MACROS
71 #define __STDC_LIMIT_MACROS
72 #endif
73 #ifndef __STDC_CONSTANT_MACROS
74 #define __STDC_CONSTANT_MACROS
75 #endif
76 #include <stdint.h>
77 #endif
78 
79 ///////////////////////////////////////////////////////////////////////////////
80 ///////////////////////////////////////////////////////////////////////////////
81 // postconfig section:
82 //
83 
84 /**
85  *  GR_STRING makes a string of X where X is expanded before conversion to a string
86  *  if X itself contains macros.
87  */
88 #define GR_STRING(X) GR_STRING_IMPL(X)
89 #define GR_STRING_IMPL(X) #X
90 
91 /**
92  *  GR_CONCAT concatenates X and Y  where each is expanded before
93  *  contanenation if either contains macros.
94  */
95 #define GR_CONCAT(X,Y) GR_CONCAT_IMPL(X,Y)
96 #define GR_CONCAT_IMPL(X,Y) X##Y
97 
98 /**
99  *  Creates a string of the form "<filename>(<linenumber>) : "
100  */
101 #define GR_FILE_AND_LINE_STR __FILE__ "(" GR_STRING(__LINE__) ") : "
102 
103 /**
104  *  Compilers have different ways of issuing warnings. This macro
105  *  attempts to abstract them, but may need to be specialized for your
106  *  particular compiler.
107  *  To insert compiler warnings use "#pragma message GR_WARN(<string>)"
108  */
109 #if defined(_MSC_VER)
110     #define GR_WARN(MSG) (GR_FILE_AND_LINE_STR "WARNING: " MSG)
111 #else//__GNUC__ - may need other defines for different compilers
112     #define GR_WARN(MSG) ("WARNING: " MSG)
113 #endif
114 
115 /**
116  *  GR_ALWAYSBREAK is an unconditional break in all builds.
117  */
118 #if !defined(GR_ALWAYSBREAK)
119     #if     defined(SK_BUILD_FOR_WIN32)
120         #define GR_ALWAYSBREAK SkNO_RETURN_HINT(); __debugbreak()
121     #else
122         // TODO: do other platforms really not have continuable breakpoints?
123         // sign extend for 64bit architectures to be sure this is
124         // in the high address range
125         #define GR_ALWAYSBREAK SkNO_RETURN_HINT(); *((int*)(int64_t)(int32_t)0xbeefcafe) = 0;
126     #endif
127 #endif
128 
129 /**
130  *  GR_DEBUGBREAK is an unconditional break in debug builds.
131  */
132 #if !defined(GR_DEBUGBREAK)
133     #ifdef SK_DEBUG
134         #define GR_DEBUGBREAK GR_ALWAYSBREAK
135     #else
136         #define GR_DEBUGBREAK
137     #endif
138 #endif
139 
140 /**
141  *  GR_ALWAYSASSERT is an assertion in all builds.
142  */
143 #if !defined(GR_ALWAYSASSERT)
144     #define GR_ALWAYSASSERT(COND)                                        \
145         do {                                                             \
146             if (!(COND)) {                                               \
147                 SkDebugf("%s %s failed\n", GR_FILE_AND_LINE_STR, #COND); \
148                 GR_ALWAYSBREAK;                                          \
149             }                                                            \
150         } while (false)
151 #endif
152 
153 /**
154  *  GR_DEBUGASSERT is an assertion in debug builds only.
155  */
156 #if !defined(GR_DEBUGASSERT)
157     #ifdef SK_DEBUG
158         #define GR_DEBUGASSERT(COND) GR_ALWAYSASSERT(COND)
159     #else
160         #define GR_DEBUGASSERT(COND)
161     #endif
162 #endif
163 
164 /**
165  *  Prettier forms of the above macros.
166  */
167 #define GrAlwaysAssert(COND) GR_ALWAYSASSERT(COND)
168 
169 /**
170  *  GR_STATIC_ASSERT is a compile time assertion. Depending on the platform
171  *  it may print the message in the compiler log. Obviously, the condition must
172  *  be evaluatable at compile time.
173  */
174 #define GR_STATIC_ASSERT(CONDITION) static_assert(CONDITION, "bug")
175 
176 #endif
177