| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #ifndef SkMacros_DEFINED |
| #define SkMacros_DEFINED |
| |
| /* |
| * Usage: SK_MACRO_CONCAT(a, b) to construct the symbol ab |
| * |
| * SK_MACRO_CONCAT_IMPL_PRIV just exists to make this work. Do not use directly |
| * |
| */ |
| #define SK_MACRO_CONCAT(X, Y) SK_MACRO_CONCAT_IMPL_PRIV(X, Y) |
| #define SK_MACRO_CONCAT_IMPL_PRIV(X, Y) X ## Y |
| |
| /* |
| * Usage: SK_MACRO_APPEND_LINE(foo) to make foo123, where 123 is the current |
| * line number. Easy way to construct |
| * unique names for local functions or |
| * variables. |
| */ |
| #define SK_MACRO_APPEND_LINE(name) SK_MACRO_CONCAT(name, __LINE__) |
| |
| #define SK_MACRO_APPEND_COUNTER(name) SK_MACRO_CONCAT(name, __COUNTER__) |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // Can be used to bracket data types that must be dense/packed, e.g. hash keys. |
| #if defined(__clang__) // This should work on GCC too, but GCC diagnostic pop didn't seem to work! |
| #define SK_BEGIN_REQUIRE_DENSE _Pragma("GCC diagnostic push") \ |
| _Pragma("GCC diagnostic error \"-Wpadded\"") |
| #define SK_END_REQUIRE_DENSE _Pragma("GCC diagnostic pop") |
| #else |
| #define SK_BEGIN_REQUIRE_DENSE |
| #define SK_END_REQUIRE_DENSE |
| #endif |
| |
| #if defined(__clang__) && defined(__has_feature) |
| // Some compilers have a preprocessor that does not appear to do short-circuit |
| // evaluation as expected |
| #if __has_feature(leak_sanitizer) || __has_feature(address_sanitizer) |
| // Chrome had issues if we tried to include lsan_interface.h ourselves. |
| // https://github.com/llvm/llvm-project/blob/10a35632d55bb05004fe3d0c2d4432bb74897ee7/compiler-rt/include/sanitizer/lsan_interface.h#L26 |
| extern "C" { |
| void __lsan_ignore_object(const void *p); |
| } |
| #define SK_INTENTIONALLY_LEAKED(X) __lsan_ignore_object(X) |
| #else |
| #define SK_INTENTIONALLY_LEAKED(X) ((void)0) |
| #endif |
| #else |
| #define SK_INTENTIONALLY_LEAKED(X) ((void)0) |
| #endif |
| |
| #define SK_INIT_TO_AVOID_WARNING = 0 |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * Defines overloaded bitwise operators to make it easier to use an enum as a |
| * bitfield. |
| */ |
| #define SK_MAKE_BITFIELD_OPS(X) \ |
| inline X operator ~(X a) { \ |
| using U = std::underlying_type_t<X>; \ |
| return (X) (~static_cast<U>(a)); \ |
| } \ |
| inline X operator |(X a, X b) { \ |
| using U = std::underlying_type_t<X>; \ |
| return (X) (static_cast<U>(a) | static_cast<U>(b)); \ |
| } \ |
| inline X& operator |=(X& a, X b) { \ |
| return (a = a | b); \ |
| } \ |
| inline X operator &(X a, X b) { \ |
| using U = std::underlying_type_t<X>; \ |
| return (X) (static_cast<U>(a) & static_cast<U>(b)); \ |
| } \ |
| inline X& operator &=(X& a, X b) { \ |
| return (a = a & b); \ |
| } |
| |
| #define SK_DECL_BITFIELD_OPS_FRIENDS(X) \ |
| friend X operator ~(X a); \ |
| friend X operator |(X a, X b); \ |
| friend X& operator |=(X& a, X b); \ |
| \ |
| friend X operator &(X a, X b); \ |
| friend X& operator &=(X& a, X b); |
| |
| #endif // SkMacros_DEFINED |