kc3-lang/angle/src/common/angleutils.h

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• Hash : e78d9a61
  Author :
  Date : 2020-07-24T11:58:45
  

  Convert unordered_map to absl::flat_hash_map for select files
  
  This is the initial CL to start migrating to abseil in various places:
  - formatutils.h
  - FramebufferVk.h
  - Program.h
  - ProgramExecutableVk.h
  - RewriteRowMajorMatrices.cpp
  
  This intentionally hits a couple different places in the code to make
  sure the abseil dependencies are added to the required targets.
  
  Bug: angleproject:4873
  Change-Id: Idd6084dff2ebce47833f304c605bbf3151b97414
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2402382
  Commit-Queue: Tim Van Patten <timvp@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Charlie Lao <cclao@google.com>
  

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• src/common/angleutils.h

• //
  // Copyright 2002 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // angleutils.h: Common ANGLE utilities.
  
  #ifndef COMMON_ANGLEUTILS_H_
  #define COMMON_ANGLEUTILS_H_
  
  #include "common/platform.h"
  
  #if defined(ANGLE_USE_ABSEIL)
  #    include "absl/container/flat_hash_map.h"
  #endif  // defined(ANGLE_USE_ABSEIL)
  
  #include <climits>
  #include <cstdarg>
  #include <cstddef>
  #include <set>
  #include <sstream>
  #include <string>
  #include <unordered_map>
  #include <vector>
  
  // A helper class to disallow copy and assignment operators
  namespace angle
  {
  
  #if defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
  using Microsoft::WRL::ComPtr;
  #endif  // defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
  
  #if defined(ANGLE_USE_ABSEIL)
  template <typename Key, typename T>
  using HashMap = absl::flat_hash_map<Key, T>;
  #else
  template <typename Key, typename T>
  using HashMap = std::unordered_map<Key, T>;
  #endif  // defined(ANGLE_USE_ABSEIL)
  
  class NonCopyable
  {
    protected:
      constexpr NonCopyable() = default;
      ~NonCopyable()          = default;
  
    private:
      NonCopyable(const NonCopyable &) = delete;
      void operator=(const NonCopyable &) = delete;
  };
  
  extern const uintptr_t DirtyPointer;
  
  }  // namespace angle
  
  template <typename T, size_t N>
  constexpr inline size_t ArraySize(T (&)[N])
  {
      return N;
  }
  
  template <typename T>
  class WrappedArray final : angle::NonCopyable
  {
    public:
      template <size_t N>
      constexpr WrappedArray(const T (&data)[N]) : mArray(&data[0]), mSize(N)
      {}
  
      constexpr WrappedArray() : mArray(nullptr), mSize(0) {}
      constexpr WrappedArray(const T *data, size_t size) : mArray(data), mSize(size) {}
  
      WrappedArray(WrappedArray &&other) : WrappedArray()
      {
          std::swap(mArray, other.mArray);
          std::swap(mSize, other.mSize);
      }
  
      ~WrappedArray() {}
  
      constexpr const T *get() const { return mArray; }
      constexpr size_t size() const { return mSize; }
  
    private:
      const T *mArray;
      size_t mSize;
  };
  
  template <typename T, unsigned int N>
  void SafeRelease(T (&resourceBlock)[N])
  {
      for (unsigned int i = 0; i < N; i++)
      {
          SafeRelease(resourceBlock[i]);
      }
  }
  
  template <typename T>
  void SafeRelease(T &resource)
  {
      if (resource)
      {
          resource->Release();
          resource = nullptr;
      }
  }
  
  template <typename T>
  void SafeDelete(T *&resource)
  {
      delete resource;
      resource = nullptr;
  }
  
  template <typename T>
  void SafeDeleteContainer(T &resource)
  {
      for (auto &element : resource)
      {
          SafeDelete(element);
      }
      resource.clear();
  }
  
  template <typename T>
  void SafeDeleteArray(T *&resource)
  {
      delete[] resource;
      resource = nullptr;
  }
  
  // Provide a less-than function for comparing structs
  // Note: struct memory must be initialized to zero, because of packing gaps
  template <typename T>
  inline bool StructLessThan(const T &a, const T &b)
  {
      return (memcmp(&a, &b, sizeof(T)) < 0);
  }
  
  // Provide a less-than function for comparing structs
  // Note: struct memory must be initialized to zero, because of packing gaps
  template <typename T>
  inline bool StructEquals(const T &a, const T &b)
  {
      return (memcmp(&a, &b, sizeof(T)) == 0);
  }
  
  template <typename T>
  inline void StructZero(T *obj)
  {
      memset(obj, 0, sizeof(T));
  }
  
  template <typename T>
  inline bool IsMaskFlagSet(T mask, T flag)
  {
      // Handles multibit flags as well
      return (mask & flag) == flag;
  }
  
  inline const char *MakeStaticString(const std::string &str)
  {
      // On the heap so that no destructor runs on application exit.
      static std::set<std::string> *strings = new std::set<std::string>;
      std::set<std::string>::iterator it    = strings->find(str);
      if (it != strings->end())
      {
          return it->c_str();
      }
  
      return strings->insert(str).first->c_str();
  }
  
  std::string ArrayString(unsigned int i);
  
  // Indices are stored in vectors with the outermost index in the back. In the output of the function
  // the indices are reversed.
  std::string ArrayIndexString(const std::vector<unsigned int> &indices);
  
  inline std::string Str(int i)
  {
      std::stringstream strstr;
      strstr << i;
      return strstr.str();
  }
  
  size_t FormatStringIntoVector(const char *fmt, va_list vararg, std::vector<char> &buffer);
  
  template <typename T>
  std::string ToString(const T &value)
  {
      std::ostringstream o;
      o << value;
      return o.str();
  }
  
  inline bool IsLittleEndian()
  {
      constexpr uint32_t kEndiannessTest = 1;
      const bool isLittleEndian          = *reinterpret_cast<const uint8_t *>(&kEndiannessTest) == 1;
      return isLittleEndian;
  }
  
  // snprintf is not defined with MSVC prior to to msvc14
  #if defined(_MSC_VER) && _MSC_VER < 1900
  #    define snprintf _snprintf
  #endif
  
  #define GL_A1RGB5_ANGLEX 0x6AC5
  #define GL_BGRX8_ANGLEX 0x6ABA
  #define GL_BGR565_ANGLEX 0x6ABB
  #define GL_BGRA4_ANGLEX 0x6ABC
  #define GL_BGR5_A1_ANGLEX 0x6ABD
  #define GL_INT_64_ANGLEX 0x6ABE
  #define GL_UINT_64_ANGLEX 0x6ABF
  #define GL_BGRA8_SRGB_ANGLEX 0x6AC0
  #define GL_BGR10_A2_ANGLEX 0x6AF9
  
  // These are dummy formats used to fit typeless D3D textures that can be bound to EGL pbuffers into
  // the format system (for extension EGL_ANGLE_d3d_texture_client_buffer):
  #define GL_RGBA8_TYPELESS_ANGLEX 0x6AC1
  #define GL_RGBA8_TYPELESS_SRGB_ANGLEX 0x6AC2
  #define GL_BGRA8_TYPELESS_ANGLEX 0x6AC3
  #define GL_BGRA8_TYPELESS_SRGB_ANGLEX 0x6AC4
  
  #define GL_R8_SSCALED_ANGLEX 0x6AC6
  #define GL_RG8_SSCALED_ANGLEX 0x6AC7
  #define GL_RGB8_SSCALED_ANGLEX 0x6AC8
  #define GL_RGBA8_SSCALED_ANGLEX 0x6AC9
  #define GL_R8_USCALED_ANGLEX 0x6ACA
  #define GL_RG8_USCALED_ANGLEX 0x6ACB
  #define GL_RGB8_USCALED_ANGLEX 0x6ACC
  #define GL_RGBA8_USCALED_ANGLEX 0x6ACD
  
  #define GL_R16_SSCALED_ANGLEX 0x6ACE
  #define GL_RG16_SSCALED_ANGLEX 0x6ACF
  #define GL_RGB16_SSCALED_ANGLEX 0x6AD0
  #define GL_RGBA16_SSCALED_ANGLEX 0x6AD1
  #define GL_R16_USCALED_ANGLEX 0x6AD2
  #define GL_RG16_USCALED_ANGLEX 0x6AD3
  #define GL_RGB16_USCALED_ANGLEX 0x6AD4
  #define GL_RGBA16_USCALED_ANGLEX 0x6AD5
  
  #define GL_R32_SSCALED_ANGLEX 0x6AD6
  #define GL_RG32_SSCALED_ANGLEX 0x6AD7
  #define GL_RGB32_SSCALED_ANGLEX 0x6AD8
  #define GL_RGBA32_SSCALED_ANGLEX 0x6AD9
  #define GL_R32_USCALED_ANGLEX 0x6ADA
  #define GL_RG32_USCALED_ANGLEX 0x6ADB
  #define GL_RGB32_USCALED_ANGLEX 0x6ADC
  #define GL_RGBA32_USCALED_ANGLEX 0x6ADD
  
  #define GL_R32_SNORM_ANGLEX 0x6ADE
  #define GL_RG32_SNORM_ANGLEX 0x6ADF
  #define GL_RGB32_SNORM_ANGLEX 0x6AE0
  #define GL_RGBA32_SNORM_ANGLEX 0x6AE1
  #define GL_R32_UNORM_ANGLEX 0x6AE2
  #define GL_RG32_UNORM_ANGLEX 0x6AE3
  #define GL_RGB32_UNORM_ANGLEX 0x6AE4
  #define GL_RGBA32_UNORM_ANGLEX 0x6AE5
  
  #define GL_R32_FIXED_ANGLEX 0x6AE6
  #define GL_RG32_FIXED_ANGLEX 0x6AE7
  #define GL_RGB32_FIXED_ANGLEX 0x6AE8
  #define GL_RGBA32_FIXED_ANGLEX 0x6AE9
  
  #define GL_RGB10_A2_SINT_ANGLEX 0x6AEA
  #define GL_RGB10_A2_SNORM_ANGLEX 0x6AEB
  #define GL_RGB10_A2_SSCALED_ANGLEX 0x6AEC
  #define GL_RGB10_A2_USCALED_ANGLEX 0x6AED
  
  // EXT_texture_type_2_10_10_10_REV
  #define GL_RGB10_UNORM_ANGLEX 0x6AEE
  
  // These are dummy formats for OES_vertex_type_10_10_10_2
  #define GL_A2_RGB10_UNORM_ANGLEX 0x6AEF
  #define GL_A2_RGB10_SNORM_ANGLEX 0x6AF0
  #define GL_A2_RGB10_USCALED_ANGLEX 0x6AF1
  #define GL_A2_RGB10_SSCALED_ANGLEX 0x6AF2
  #define GL_X2_RGB10_UINT_ANGLEX 0x6AF3
  #define GL_X2_RGB10_SINT_ANGLEX 0x6AF4
  #define GL_X2_RGB10_USCALED_ANGLEX 0x6AF5
  #define GL_X2_RGB10_SSCALED_ANGLEX 0x6AF6
  #define GL_X2_RGB10_UNORM_ANGLEX 0x6AF7
  #define GL_X2_RGB10_SNORM_ANGLEX 0x6AF8
  
  #define ANGLE_CHECK_GL_ALLOC(context, result) \
      ANGLE_CHECK(context, result, "Failed to allocate host memory", GL_OUT_OF_MEMORY)
  
  #define ANGLE_CHECK_GL_MATH(context, result) \
      ANGLE_CHECK(context, result, "Integer overflow.", GL_INVALID_OPERATION)
  
  #define ANGLE_GL_UNREACHABLE(context) \
      UNREACHABLE();                    \
      ANGLE_CHECK(context, false, "Unreachable Code.", GL_INVALID_OPERATION)
  
  // The below inlining code lifted from V8.
  #if defined(__clang__) || (defined(__GNUC__) && defined(__has_attribute))
  #    define ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE (__has_attribute(always_inline))
  #    define ANGLE_HAS___FORCEINLINE 0
  #elif defined(_MSC_VER)
  #    define ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE 0
  #    define ANGLE_HAS___FORCEINLINE 1
  #else
  #    define ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE 0
  #    define ANGLE_HAS___FORCEINLINE 0
  #endif
  
  #if defined(NDEBUG) && ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE
  #    define ANGLE_INLINE inline __attribute__((always_inline))
  #elif defined(NDEBUG) && ANGLE_HAS___FORCEINLINE
  #    define ANGLE_INLINE __forceinline
  #else
  #    define ANGLE_INLINE inline
  #endif
  
  #if defined(__clang__) || (defined(__GNUC__) && defined(__has_attribute))
  #    if __has_attribute(noinline)
  #        define ANGLE_NOINLINE __attribute__((noinline))
  #    else
  #        define ANGLE_NOINLINE
  #    endif
  #elif defined(_MSC_VER)
  #    define ANGLE_NOINLINE __declspec(noinline)
  #else
  #    define ANGLE_NOINLINE
  #endif
  
  #if defined(__clang__) || (defined(__GNUC__) && defined(__has_attribute))
  #    if __has_attribute(format)
  #        define ANGLE_FORMAT_PRINTF(fmt, args) __attribute__((format(__printf__, fmt, args)))
  #    else
  #        define ANGLE_FORMAT_PRINTF(fmt, args)
  #    endif
  #else
  #    define ANGLE_FORMAT_PRINTF(fmt, args)
  #endif
  
  // Format messes up the # inside the macro.
  // clang-format off
  #ifndef ANGLE_STRINGIFY
  #    define ANGLE_STRINGIFY(x) #x
  #endif
  // clang-format on
  
  #ifndef ANGLE_MACRO_STRINGIFY
  #    define ANGLE_MACRO_STRINGIFY(x) ANGLE_STRINGIFY(x)
  #endif
  
  // Detect support for C++17 [[nodiscard]]
  #if !defined(__has_cpp_attribute)
  #    define __has_cpp_attribute(name) 0
  #endif  // !defined(__has_cpp_attribute)
  
  #if __has_cpp_attribute(nodiscard)
  #    define ANGLE_NO_DISCARD [[nodiscard]]
  #else
  #    define ANGLE_NO_DISCARD
  #endif  // __has_cpp_attribute(nodiscard)
  
  #if __has_cpp_attribute(maybe_unused)
  #    define ANGLE_MAYBE_UNUSED [[maybe_unused]]
  #else
  #    define ANGLE_MAYBE_UNUSED
  #endif  // __has_cpp_attribute(maybe_unused)
  
  #if __has_cpp_attribute(require_constant_initialization)
  #    define ANGLE_REQUIRE_CONSTANT_INIT [[require_constant_initialization]]
  #else
  #    define ANGLE_REQUIRE_CONSTANT_INIT
  #endif  // __has_cpp_attribute(require_constant_initialization)
  
  #endif  // COMMON_ANGLEUTILS_H_
  

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