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In some cases, it's sufficient to move the zero-length array to the end of the structure. When the struct is used inside a class that is derived from however, this fails. In that case, switch to holding the object in a scoped_ptr. Longer winded version: https://groups.google.com/a/chromium.org/d/msg/crashpad-dev/NGZ6LwRMORM/nKcXKQ7inIEJ R=mark@chromium.org BUG=crashpad:1 Review URL: https://codereview.chromium.org/896663006
80 lines
2.7 KiB
C++
80 lines
2.7 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_RVA_LIST_WRITER_H_
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#define CRASHPAD_MINIDUMP_RVA_LIST_WRITER_H_
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#include <stdint.h>
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#include <sys/types.h>
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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_writable.h"
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#include "util/stdlib/pointer_container.h"
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namespace crashpad {
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namespace internal {
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//! \brief The writer for a MinidumpRVAList object in a minidump file,
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//! containing a list of ::RVA pointers.
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class MinidumpRVAListWriter : public MinidumpWritable {
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protected:
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MinidumpRVAListWriter();
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~MinidumpRVAListWriter() override;
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//! \brief Adds an ::RVA referencing an MinidumpWritable to the
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//! MinidumpRVAList.
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//!
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//! This object takes ownership of \a child and becomes its parent in the
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//! overall tree of MinidumpWritable objects.
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//!
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//! To provide type-correctness, subclasses are expected to provide a public
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//! method that accepts a `scoped_ptr`-wrapped argument of the proper
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//! MinidumpWritable subclass, and call this method with that argument.
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//!
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//! \note Valid in #kStateMutable.
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void AddChild(scoped_ptr<MinidumpWritable> child);
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//! \brief Returns `true` if no child objects have been added by AddChild(),
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//! and `false` if child objects are present.
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bool IsEmpty() const { return children_.empty(); }
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//! \brief Returns an object’s ::RVA objects referencing its children.
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//!
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//! \note The returned vector will be empty until the object advances to
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//! #kStateFrozen or beyond.
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const std::vector<RVA>& child_rvas() const { return child_rvas_; }
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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 WriteObject(FileWriterInterface* file_writer) override;
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private:
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scoped_ptr<MinidumpRVAList> rva_list_base_;
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PointerVector<MinidumpWritable> children_;
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std::vector<RVA> child_rvas_;
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DISALLOW_COPY_AND_ASSIGN(MinidumpRVAListWriter);
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};
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} // namespace internal
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} // namespace crashpad
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#endif // CRASHPAD_MINIDUMP_RVA_LIST_WRITER_H_
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