Add ProcessTypes, its test, and many proctype definition files

util/mac/process_types/traits.h

+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file is intended to be included multiple times in the same translation
+// unit, so #include guards are intentionally absent.
+//
+// This file is included by util/mac/process_types.h and
+// util/mac/process_types/internal.h to produce traits class definitions.
+
+// Things that #include this file should #undef
+// DECLARE_PROCESS_TYPE_TRAITS_CLASS before #including this file again and after
+// the last #include of this file.
+//
+// |Reserved| is used for padding fields that may be zero-length, and thus
+// __VA_ARGS__, which is intended to set the alignment of the 64-bit types, is
+// not used for that typedef.
+#define DECLARE_PROCESS_TYPE_TRAITS_CLASS(traits_name, lp_bits, ...) \
+  namespace crashpad {                                                  \
+  namespace process_types {                                          \
+  namespace internal {                                               \
+  struct Traits##traits_name {                                       \
+    typedef int##lp_bits##_t Long __VA_ARGS__;                       \
+    typedef uint##lp_bits##_t ULong __VA_ARGS__;                     \
+    typedef uint##lp_bits##_t Pointer __VA_ARGS__;                   \
+    typedef int##lp_bits##_t IntPtr __VA_ARGS__;                     \
+    typedef uint##lp_bits##_t UIntPtr __VA_ARGS__;                   \
+    typedef Reserved64Only##lp_bits Reserved64Only;                  \
+  };                                                                 \
+  }                                                                  \
+  }                                                                  \
+  }