Sylvestre Ledru
21f364f20f
replaced by .editorconfig # ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D287860
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_StackWalk_windows_h
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#define mozilla_StackWalk_windows_h
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#include "mozilla/Array.h"
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#include "mozilla/Types.h"
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#if defined(_M_AMD64) || defined(_M_ARM64)
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/**
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* This function enables strategy (1) for avoiding deadlocks between the stack
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* walking thread and the suspended thread. In aStackWalkLocks the caller must
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* provide pointers to the two ntdll-internal SRW locks acquired by
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* RtlLookupFunctionEntry. These locks are LdrpInvertedFunctionTableSRWLock and
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* RtlpDynamicFunctionTableLock -- we don't need to know which one is which.
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* Until InitializeStackWalkLocks function is called, strategy (2) is used.
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*
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* See comment in StackWalk.cpp
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*/
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MFBT_API
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void InitializeStackWalkLocks(const mozilla::Array<void*, 2>& aStackWalkLocks);
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/**
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* As part of strategy (2) for avoiding deadlocks between the stack walking
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* thread and the suspended thread, we mark stack walk suppression paths by
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* putting them under the scope of a AutoSuppressStackWalking object. Any code
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* path that may do an exclusive acquire of LdrpInvertedFunctionTableSRWLock or
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* RtlpDynamicFunctionTableLock should be marked this way, to ensure that
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* strategy (2) can properly mitigate all deadlock scenarios.
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*
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* See comment in StackWalk.cpp
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*/
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struct MOZ_RAII AutoSuppressStackWalking {
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MFBT_API AutoSuppressStackWalking();
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MFBT_API ~AutoSuppressStackWalking();
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};
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# if defined(IMPL_MFBT)
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void SuppressStackWalking();
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void DesuppressStackWalking();
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# endif // defined(IMPL_MFBT)
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MFBT_API void RegisterJitCodeRegion(uint8_t* aStart, size_t size);
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MFBT_API void UnregisterJitCodeRegion(uint8_t* aStart, size_t size);
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#endif // _M_AMD64 || _M_ARM64
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#endif // mozilla_StackWalk_windows_h
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