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third_party/crashpad/crashpad/minidump/minidump_file_writer.h

Index: third_party/crashpad/crashpad/minidump/minidump_file_writer.h
diff --git a/third_party/crashpad/crashpad/minidump/minidump_file_writer.h b/third_party/crashpad/crashpad/minidump/minidump_file_writer.h
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+// 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_MINIDUMP_MINIDUMP_FILE_WRITER_H_
+#define CRASHPAD_MINIDUMP_MINIDUMP_FILE_WRITER_H_
+
+#include <windows.h>
+#include <dbghelp.h>
+#include <sys/types.h>
+
+#include <set>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "minidump/minidump_extensions.h"
+#include "minidump/minidump_stream_writer.h"
+#include "minidump/minidump_writable.h"
+#include "util/file/file_io.h"
+#include "util/stdlib/pointer_container.h"
+
+namespace crashpad {
+
+class ProcessSnapshot;
+
+//! \brief The root-level object in a minidump file.
+//!
+//! This object writes a MINIDUMP_HEADER and list of MINIDUMP_DIRECTORY entries
+//! to a minidump file.
+class MinidumpFileWriter final : public internal::MinidumpWritable {
+ public:
+  MinidumpFileWriter();
+  ~MinidumpFileWriter() override;
+
+  //! \brief Initializes the MinidumpFileWriter and populates it with
+  //!     appropriate child streams based on \a process_snapshot.
+  //!
+  //! This method will add additional streams to the minidump file as children
+  //! of the MinidumpFileWriter object and as pointees of the top-level
+  //! MINIDUMP_DIRECTORY. To do so, it will obtain other snapshot information
+  //! from \a process_snapshot, such as a SystemSnapshot, lists of
+  //! ThreadSnapshot and ModuleSnapshot objects, and, if available, an
+  //! ExceptionSnapshot.
+  //!
+  //! The streams are added in the order that they are expected to be most
+  //! useful to minidump readers, to improve data locality and minimize seeking.
+  //! The streams are added in this order:
+  //!  - kMinidumpStreamTypeSystemInfo
+  //!  - kMinidumpStreamTypeMiscInfo
+  //!  - kMinidumpStreamTypeThreadList
+  //!  - kMinidumpStreamTypeException (if present)
+  //!  - kMinidumpStreamTypeModuleList
+  //!  - kMinidumpStreamTypeCrashpadInfo (if present)
+  //!  - kMinidumpStreamTypeMemoryList
+  //!
+  //! \param[in] process_snapshot The process snapshot to use as source data.
+  //!
+  //! \note Valid in #kStateMutable. No mutator methods may be called before
+  //!     this method, and it is not normally necessary to call any mutator
+  //!     methods after this method.
+  void InitializeFromSnapshot(const ProcessSnapshot* process_snapshot);
+
+  //! \brief Sets MINIDUMP_HEADER::Timestamp.
+  //!
+  //! \note Valid in #kStateMutable.
+  void SetTimestamp(time_t timestamp);
+
+  //! \brief Adds a stream to the minidump file and arranges for a
+  //!     MINIDUMP_DIRECTORY entry to point to it.
+  //!
+  //! This object takes ownership of \a stream and becomes its parent in the
+  //! overall tree of internal::MinidumpWritable objects.
+  //!
+  //! At most one object of each stream type (as obtained from
+  //! internal::MinidumpStreamWriter::StreamType()) may be added to a
+  //! MinidumpFileWriter object. It is an error to attempt to add multiple
+  //! streams with the same stream type.
+  //!
+  //! \note Valid in #kStateMutable.
+  void AddStream(scoped_ptr<internal::MinidumpStreamWriter> stream);
+
+  // MinidumpWritable:
+
+  //! \copydoc internal::MinidumpWritable::WriteEverything()
+  //!
+  //! This method does not initially write the final value for
+  //! MINIDUMP_HEADER::Signature. After all child objects have been written, it
+  //! rewinds to the beginning of the file and writes the correct value for this
+  //! field. This prevents incompletely-written minidump files from being
+  //! mistaken for valid ones.
+  bool WriteEverything(FileWriterInterface* file_writer) override;
+
+ protected:
+  // MinidumpWritable:
+  bool Freeze() override;
+  size_t SizeOfObject() override;
+  std::vector<MinidumpWritable*> Children() override;
+  bool WillWriteAtOffsetImpl(FileOffset offset) override;
+  bool WriteObject(FileWriterInterface* file_writer) override;
+
+ private:
+  MINIDUMP_HEADER header_;
+  PointerVector<internal::MinidumpStreamWriter> streams_;
+
+  // Protects against multiple streams with the same ID being added.
+  std::set<MinidumpStreamType> stream_types_;
+
+  DISALLOW_COPY_AND_ASSIGN(MinidumpFileWriter);
+};
+
+}  // namespace crashpad
+
+#endif  // CRASHPAD_MINIDUMP_MINIDUMP_WRITER_H_