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429a3368d4
- dbghelp.h requires windows.h to be included before it (ick!). Add a stub one for non_win to make this work. - convert __attribute__ -> macro that can work work with MSVC; - a handful of narrowing casts. R=mark@chromium.org BUG=crashpad:1 Review URL: https://codereview.chromium.org/883773005
124 lines
4.5 KiB
C++
124 lines
4.5 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_MINIDUMP_MINIDUMP_FILE_WRITER_H_
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#define CRASHPAD_MINIDUMP_MINIDUMP_FILE_WRITER_H_
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#include <windows.h>
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#include <dbghelp.h>
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#include <sys/types.h>
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#include <set>
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#include <vector>
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#include "base/basictypes.h"
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#include "base/memory/scoped_ptr.h"
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#include "minidump/minidump_extensions.h"
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#include "minidump/minidump_stream_writer.h"
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#include "minidump/minidump_writable.h"
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#include "util/stdlib/pointer_container.h"
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namespace crashpad {
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class ProcessSnapshot;
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//! \brief The root-level object in a minidump file.
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//!
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//! This object writes a MINIDUMP_HEADER and list of MINIDUMP_DIRECTORY entries
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//! to a minidump file.
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class MinidumpFileWriter final : public internal::MinidumpWritable {
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public:
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MinidumpFileWriter();
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~MinidumpFileWriter() override;
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//! \brief Initializes the MinidumpFileWriter and populates it with
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//! appropriate child streams based on \a process_snapshot.
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//!
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//! This method will add additional streams to the minidump file as children
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//! of the MinidumpFileWriter object and as pointees of the top-level
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//! MINIDUMP_DIRECTORY. To do so, it will obtain other snapshot information
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//! from \a process_snapshot, such as a SystemSnapshot, lists of
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//! ThreadSnapshot and ModuleSnapshot objects, and, if available, an
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//! ExceptionSnapshot.
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//!
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//! The streams are added in the order that they are expected to be most
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//! useful to minidump readers, to improve data locality and minimize seeking.
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//! The streams are added in this order:
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//! - kMinidumpStreamTypeSystemInfo
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//! - kMinidumpStreamTypeMiscInfo
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//! - kMinidumpStreamTypeThreadList
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//! - kMinidumpStreamTypeException (if present)
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//! - kMinidumpStreamTypeModuleList
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//! - kMinidumpStreamTypeCrashpadInfo (if present)
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//! - kMinidumpStreamTypeMemoryList
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//!
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//! \param[in] process_snapshot The process snapshot to use as source data.
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//!
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//! \note Valid in #kStateMutable. No mutator methods may be called before
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//! this method, and it is not normally necessary to call any mutator
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//! methods after this method.
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void InitializeFromSnapshot(const ProcessSnapshot* process_snapshot);
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//! \brief Sets MINIDUMP_HEADER::Timestamp.
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//!
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//! \note Valid in #kStateMutable.
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void SetTimestamp(time_t timestamp);
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//! \brief Adds a stream to the minidump file and arranges for a
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//! MINIDUMP_DIRECTORY entry to point to it.
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//!
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//! This object takes ownership of \a stream and becomes its parent in the
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//! overall tree of internal::MinidumpWritable objects.
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//!
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//! At most one object of each stream type (as obtained from
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//! internal::MinidumpStreamWriter::StreamType()) may be added to a
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//! MinidumpFileWriter object. It is an error to attempt to add multiple
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//! streams with the same stream type.
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//!
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//! \note Valid in #kStateMutable.
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void AddStream(scoped_ptr<internal::MinidumpStreamWriter> stream);
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// MinidumpWritable:
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//! \copydoc internal::MinidumpWritable::WriteEverything()
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//!
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//! This method does not initially write the final value for
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//! MINIDUMP_HEADER::Signature. After all child objects have been written, it
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//! rewinds to the beginning of the file and writes the correct value for this
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//! field. This prevents incompletely-written minidump files from being
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//! mistaken for valid ones.
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bool WriteEverything(FileWriterInterface* file_writer) override;
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protected:
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// MinidumpWritable:
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bool Freeze() override;
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size_t SizeOfObject() override;
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std::vector<MinidumpWritable*> Children() override;
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bool WillWriteAtOffsetImpl(off_t offset) override;
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bool WriteObject(FileWriterInterface* file_writer) override;
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private:
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MINIDUMP_HEADER header_;
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PointerVector<internal::MinidumpStreamWriter> streams_;
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// Protects against multiple streams with the same ID being added.
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std::set<MinidumpStreamType> stream_types_;
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DISALLOW_COPY_AND_ASSIGN(MinidumpFileWriter);
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};
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} // namespace crashpad
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#endif // CRASHPAD_MINIDUMP_MINIDUMP_WRITER_H_
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