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45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_WIN_WAIT_CHAIN_H_
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#define BASE_WIN_WAIT_CHAIN_H_
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#include <windows.h>
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#include <wct.h>
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#include <vector>
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#include "base/strings/string16.h"
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namespace base {
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namespace win {
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using WaitChainNodeVector = std::vector<WAITCHAIN_NODE_INFO>;
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// Gets the wait chain for |thread_id|. Also specifies if the |wait_chain|
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// contains a deadlock. Returns true on success.
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//
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// From MSDN: A wait chain is an alternating sequence of threads and
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// synchronization objects; each thread waits for the object that follows it,
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// which is owned by the subsequent thread in the chain.
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//
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// On error, |failure_reason| and/or |last_error| will contain the details of
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// the failure, given that they are not null.
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// TODO(pmonette): Remove |failure_reason| and |last_error| when UMA is
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// supported in the watcher process and pre-rendez-vous.
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BASE_EXPORT bool GetThreadWaitChain(DWORD thread_id,
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WaitChainNodeVector* wait_chain,
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bool* is_deadlock,
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base::string16* failure_reason,
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DWORD* last_error);
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// Returns a string that represents the node for a wait chain.
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BASE_EXPORT base::string16 WaitChainNodeToString(
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const WAITCHAIN_NODE_INFO& node);
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} // namespace win
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} // namespace base
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#endif // BASE_WIN_WAIT_CHAIN_H_
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