crashpad/snapshot/thread_snapshot.h
Mark Mentovai 7b2e7efcc2 Add the Snapshot interface.
These are all of the abstract base classes used in the Snapshot series,
discussed in the thread at
https://groups.google.com/a/chromium.org/d/topic/crashpad-dev/4pACgjhIz-I.

R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/597673004
2014-10-02 17:09:37 -04:00

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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_SNAPSHOT_THREAD_SNAPSHOT_H_
#define CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_H_
#include <stdint.h>
namespace crashpad {
struct CPUContext;
class MemorySnapshot;
//! \brief An abstract interface to a snapshot representing a thread
//! (lightweight process) present in a snapshot process.
class ThreadSnapshot {
public:
//! \brief Returns a CPUContext object corresponding to the threads CPU
//! context.
//!
//! The caller does not take ownership of this object, it is scoped to the
//! lifetime of the ThreadSnapshot object that it was obtained from.
virtual const CPUContext* Context() const = 0;
//! \brief Returns a MemorySnapshot object corresponding to the memory region
//! that contains the threads stack.
//!
//! The caller does not take ownership of this object, it is scoped to the
//! lifetime of the ThreadSnapshot object that it was obtained from.
virtual const MemorySnapshot* Stack() const = 0;
//! \brief Returns the threads identifier.
//!
//! Thread identifiers are at least unique within a process, and may be unique
//! system-wide.
virtual uint64_t ThreadID() const = 0;
//! \brief Returns the threads suspend count.
//!
//! A suspend count of `0` denotes a schedulable (not suspended) thread.
virtual int SuspendCount() const = 0;
//! \brief Returns the threads priority.
//!
//! Threads with higher priorities will have higher priority values.
virtual int Priority() const = 0;
//! \brief Returns the base address of a region used to store thread-specific
//! data.
virtual uint64_t ThreadSpecificDataAddress() const = 0;
protected:
~ThreadSnapshot() {}
};
} // namespace crashpad
#endif // CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_H_