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-rw-r--r--mozglue/misc/StackWalk_windows.h34
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diff --git a/mozglue/misc/StackWalk_windows.h b/mozglue/misc/StackWalk_windows.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_StackWalk_windows_h
+#define mozilla_StackWalk_windows_h
+
+#include "mozilla/Types.h"
+
+#if defined(_M_AMD64) || defined(_M_ARM64)
+/**
+ * Allow stack walkers to work around the egregious win64 dynamic lookup table
+ * list API by locking around SuspendThread to avoid deadlock.
+ *
+ * See comment in StackWalk.cpp
+ */
+struct MOZ_RAII AutoSuppressStackWalking {
+ MFBT_API AutoSuppressStackWalking();
+ MFBT_API ~AutoSuppressStackWalking();
+};
+
+# if defined(IMPL_MFBT)
+void SuppressStackWalking();
+void DesuppressStackWalking();
+# endif // defined(IMPL_MFBT)
+
+MFBT_API void RegisterJitCodeRegion(uint8_t* aStart, size_t size);
+
+MFBT_API void UnregisterJitCodeRegion(uint8_t* aStart, size_t size);
+#endif // _M_AMD64
+
+#endif // mozilla_StackWalk_windows_h