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

snapshot/thread_snapshot_mac.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.
-
-#ifndef CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_MAC_H_
-#define CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_MAC_H_
-
-#include <mach/mach.h>
-#include <stdint.h>
-
-#include "base/basictypes.h"
-#include "build/build_config.h"
-#include "snapshot/cpu_context.h"
-#include "snapshot/memory_snapshot.h"
-#include "snapshot/memory_snapshot_mac.h"
-#include "snapshot/thread_snapshot.h"
-#include "util/misc/initialization_state_dcheck.h"
-
-namespace crashpad {
-
-class ProcessReader;
-
-namespace internal {
-
-//! \brief A ThreadSnapshot of a thread in a running (or crashed) process on a
-//!     Mac OS X system.
-class ThreadSnapshotMac final : public ThreadSnapshot {
- public:
-  ThreadSnapshotMac();
-  ~ThreadSnapshotMac();
-
-  //! \brief Initializes the object.
-  //!
-  //! \param[in] process_reader A ProcessReader for the task containing the
-  //!     thread.
-  //! \param[in] process_reader_thread The thread within the ProcessReader that
-  //!     for which the snapshot should be created.
-  //!
-  //! \return `true` if the snapshot could be created, `false` otherwise with
-  //!     an appropriate message logged.
-  bool Initialize(ProcessReader* process_reader,
-                  const ProcessReader::Thread& process_reader_thread);
-
-  // ThreadSnapshot:
-
-  const CPUContext* Context() const override;
-  const MemorySnapshot* Stack() const override;
-  uint64_t ThreadID() const override;
-  int SuspendCount() const override;
-  int Priority() const override;
-  uint64_t ThreadSpecificDataAddress() const override;
-
- private:
-#if defined(ARCH_CPU_X86_FAMILY)
-  union {
-    CPUContextX86 x86;
-    CPUContextX86_64 x86_64;
-  } context_union_;
-#endif
-  CPUContext context_;
-  MemorySnapshotMac stack_;
-  uint64_t thread_id_;
-  uint64_t thread_specific_data_address_;
-  thread_t thread_;
-  int suspend_count_;
-  int priority_;
-  InitializationStateDcheck initialized_;
-
-  DISALLOW_COPY_AND_ASSIGN(ThreadSnapshotMac);
-};
-
-}  // namespace internal
-}  // namespace crashpad
-
-#endif  // CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_MAC_H_