Create snapshot/mac and move some files from snapshot and util to there

util/mac/process_types.cc

-// 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.
-
-#include "util/mac/process_types.h"
-
-#include <string.h>
-#include <uuid/uuid.h>
-
-#include "base/memory/scoped_ptr.h"
-#include "util/mac/process_types/internal.h"
-#include "util/mach/task_memory.h"
-
-namespace crashpad {
-namespace {
-
-// Assign() is used by each flavor's ReadInto implementation to copy data from a
-// specific struct to a generic struct. For fundamental types, the assignment
-// operator suffices. For other types such as arrays, an explicit Assign
-// specialization is needed, typically performing a copy.
-
-template <typename DestinationType, typename SourceType>
-inline void Assign(DestinationType* destination, const SourceType& source) {
-  *destination = source;
-}
-
-template <>
-inline void Assign<process_types::internal::Reserved64Only64,
-                   process_types::internal::Reserved64Only32>(
-    process_types::internal::Reserved64Only64* destination,
-    const process_types::internal::Reserved64Only32& source) {
-  // Reserved64Only32 carries no data.
-  *destination = 0;
-}
-
-typedef char CharArray16[16];
-template <>
-inline void Assign<CharArray16, CharArray16>(CharArray16* destination,
-                                             const CharArray16& source) {
-  memcpy(destination, &source, sizeof(source));
-}
-
-typedef uint64_t UInt64Array16[16];
-template <>
-inline void Assign<UInt64Array16, UInt64Array16>(UInt64Array16* destination,
-                                                 const UInt64Array16& source) {
-  memcpy(destination, &source, sizeof(source));
-}
-
-typedef uint32_t UInt32Array16[16];
-template <>
-inline void Assign<UInt64Array16, UInt32Array16>(UInt64Array16* destination,
-                                                 const UInt32Array16& source) {
-  for (size_t index = 0; index < arraysize(source); ++index) {
-    (*destination)[index] = source[index];
-  }
-}
-
-template <>
-inline void Assign<uuid_t, uuid_t>(uuid_t* destination, const uuid_t& source) {
-  // uuid_t is a typedef for unsigned char[16].
-  memcpy(destination, &source, sizeof(source));
-}
-
-}  // namespace
-}  // namespace crashpad
-
-// Implement the generic crashpad::process_types::struct_name ReadInto(), which
-// delegates to the templatized ReadIntoInternal(), which reads the specific
-// struct type from the remote process and genericizes it. Also implement
-// crashpad::process_types::internal::struct_name<> GenericizeInto(), which
-// operates on each member in the struct.
-#define PROCESS_TYPE_STRUCT_IMPLEMENT 1
-
-#define PROCESS_TYPE_STRUCT_BEGIN(struct_name)                             \
-  namespace crashpad {                                                     \
-  namespace process_types {                                                \
-                                                                           \
-  size_t struct_name::ExpectedSize(ProcessReader* process_reader) {        \
-    if (!process_reader->Is64Bit()) {                                      \
-      return internal::struct_name<internal::Traits32>::Size();            \
-    } else {                                                               \
-      return internal::struct_name<internal::Traits64>::Size();            \
-    }                                                                      \
-  }                                                                        \
-                                                                           \
-  bool struct_name::ReadInto(ProcessReader* process_reader,                \
-                             mach_vm_address_t address,                    \
-                             struct_name* generic) {                       \
-    if (!process_reader->Is64Bit()) {                                      \
-      return ReadIntoInternal<internal::struct_name<internal::Traits32> >( \
-          process_reader, address, generic);                               \
-    } else {                                                               \
-      return ReadIntoInternal<internal::struct_name<internal::Traits64> >( \
-          process_reader, address, generic);                               \
-    }                                                                      \
-  }                                                                        \
-                                                                           \
-  template <typename T>                                                    \
-  bool struct_name::ReadIntoInternal(ProcessReader* process_reader,        \
-                                     mach_vm_address_t address,            \
-                                     struct_name* generic) {               \
-    T specific;                                                            \
-    if (!specific.Read(process_reader, address)) {                         \
-      return false;                                                        \
-    }                                                                      \
-    specific.GenericizeInto(generic, &generic->size_);                     \
-    return true;                                                           \
-  }                                                                        \
-                                                                           \
-  namespace internal {                                                     \
-                                                                           \
-  template <typename Traits>                                               \
-  void struct_name<Traits>::GenericizeInto(                                \
-      process_types::struct_name* generic,                                 \
-      size_t* specific_size) {                                             \
-    *specific_size = Size();
-
-#define PROCESS_TYPE_STRUCT_MEMBER(member_type, member_name, ...) \
-    Assign(&generic->member_name, member_name);
-
-#define PROCESS_TYPE_STRUCT_END(struct_name) \
-  }                                          \
-  }  /* namespace internal */                \
-  }  /* namespace process_types */           \
-  }  /* namespace crashpad */
-
-#include "util/mac/process_types/all.proctype"
-
-#undef PROCESS_TYPE_STRUCT_BEGIN
-#undef PROCESS_TYPE_STRUCT_MEMBER
-#undef PROCESS_TYPE_STRUCT_END
-#undef PROCESS_TYPE_STRUCT_IMPLEMENT
-
-// Implement the specific crashpad::process_types::internal::struct_name<>
-// ReadInto(). The default implementation simply reads the struct from the
-// remote process. This is separated from other method implementations because
-// some types may wish to provide custom readers. This can be done by guarding
-// such types’ proctype definitions against this macro and providing custom
-// implementations in util/mac/process_types/custom.cc.
-#define PROCESS_TYPE_STRUCT_IMPLEMENT_INTERNAL_READ_INTO 1
-
-#define PROCESS_TYPE_STRUCT_BEGIN(struct_name)                        \
-  namespace crashpad {                                                \
-  namespace process_types {                                           \
-  namespace internal {                                                \
-                                                                      \
-  template <typename Traits>                                          \
-  bool struct_name<Traits>::ReadInto(ProcessReader* process_reader,   \
-                                     mach_vm_address_t address,       \
-                                     struct_name<Traits>* specific) { \
-    return process_reader->Memory()->Read(                            \
-        address, sizeof(*specific), specific);                        \
-  }                                                                   \
-  }  /* namespace internal */                                         \
-  }  /* namespace process_types */                                    \
-  }  /* namespace crashpad */
-
-#define PROCESS_TYPE_STRUCT_MEMBER(member_type, member_name, ...)
-
-#define PROCESS_TYPE_STRUCT_END(struct_name)
-
-#include "util/mac/process_types/all.proctype"
-
-#undef PROCESS_TYPE_STRUCT_BEGIN
-#undef PROCESS_TYPE_STRUCT_MEMBER
-#undef PROCESS_TYPE_STRUCT_END
-#undef PROCESS_TYPE_STRUCT_IMPLEMENT_INTERNAL_READ_INTO
-
-// Implement the array operations. These are separated from other method
-// implementations because some types are variable-length and are never stored
-// as direct-access arrays. It would be incorrect to provide reader
-// implementations for such types. Types that wish to suppress array operations
-// can do so by guarding their proctype definitions against this macro.
-#define PROCESS_TYPE_STRUCT_IMPLEMENT_ARRAY 1
-
-#define PROCESS_TYPE_STRUCT_BEGIN(struct_name)                                \
-  namespace crashpad {                                                        \
-  namespace process_types {                                                   \
-  namespace internal {                                                        \
-                                                                              \
-  template <typename Traits>                                                  \
-  bool struct_name<Traits>::ReadArrayInto(ProcessReader* process_reader,      \
-                                          mach_vm_address_t address,          \
-                                          size_t count,                       \
-                                          struct_name<Traits>* specific) {    \
-    return process_reader->Memory()->Read(                                    \
-        address, sizeof(struct_name<Traits> [count]), specific);              \
-  }                                                                           \
-  }  /* namespace internal */                                                 \
-                                                                              \
-  bool struct_name::ReadArrayInto(ProcessReader* process_reader,              \
-                                  mach_vm_address_t address,                  \
-                                  size_t count,                               \
-                                  struct_name* generic) {                     \
-    if (!process_reader->Is64Bit()) {                                         \
-      return ReadArrayIntoInternal<                                           \
-          internal::struct_name<internal::Traits32> >(                        \
-          process_reader, address, count, generic);                           \
-    } else {                                                                  \
-      return ReadArrayIntoInternal<                                           \
-          internal::struct_name<internal::Traits64> >(                        \
-          process_reader, address, count, generic);                           \
-    }                                                                         \
-    return true;                                                              \
-  }                                                                           \
-                                                                              \
-  template <typename T>                                                       \
-  bool struct_name::ReadArrayIntoInternal(ProcessReader* process_reader,      \
-                                          mach_vm_address_t address,          \
-                                          size_t count,                       \
-                                          struct_name* generic) {             \
-    scoped_ptr<T[]> specific(new T[count]);                                   \
-    if (!T::ReadArrayInto(process_reader, address, count, &specific[0])) {    \
-      return false;                                                           \
-    }                                                                         \
-    for (size_t index = 0; index < count; ++index) {                          \
-      specific[index].GenericizeInto(&generic[index], &generic[index].size_); \
-    }                                                                         \
-    return true;                                                              \
-  }                                                                           \
-  }  /* namespace process_types */                                            \
-  }  /* namespace crashpad */
-
-#define PROCESS_TYPE_STRUCT_MEMBER(member_type, member_name, ...)
-
-#define PROCESS_TYPE_STRUCT_END(struct_name)
-
-#include "util/mac/process_types/all.proctype"
-
-#undef PROCESS_TYPE_STRUCT_BEGIN
-#undef PROCESS_TYPE_STRUCT_MEMBER
-#undef PROCESS_TYPE_STRUCT_END
-#undef PROCESS_TYPE_STRUCT_IMPLEMENT_ARRAY