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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 MainThreadUtils_h_
#define MainThreadUtils_h_
#include "mozilla/Assertions.h"
#include "mozilla/ThreadSafety.h"
#include "nscore.h"
class nsIThread;
/**
* Get a reference to the main thread.
*
* @param aResult
* The resulting nsIThread object.
*/
extern nsresult NS_GetMainThread(nsIThread** aResult);
#ifdef MOZILLA_INTERNAL_API
bool NS_IsMainThreadTLSInitialized();
extern "C" {
bool NS_IsMainThread();
}
namespace mozilla {
/**
* A dummy static capability for the thread safety analysis which can be
* required by functions and members using `MOZ_REQUIRE(sMainThreadCapability)`
* and `MOZ_GUARDED_BY(sMainThreadCapability)` and asserted using
* `AssertIsOnMainThread()`.
*
* If you want a thread-safety-analysis capability for a non-main thread,
* consider using the `EventTargetCapability` type.
*/
class MOZ_CAPABILITY("main thread") MainThreadCapability final {};
constexpr MainThreadCapability sMainThreadCapability;
# ifdef DEBUG
void AssertIsOnMainThread() MOZ_ASSERT_CAPABILITY(sMainThreadCapability);
# else
inline void AssertIsOnMainThread()
MOZ_ASSERT_CAPABILITY(sMainThreadCapability) {}
# endif
inline void ReleaseAssertIsOnMainThread()
MOZ_ASSERT_CAPABILITY(sMainThreadCapability) {
MOZ_RELEASE_ASSERT(NS_IsMainThread());
}
} // namespace mozilla
#endif
#endif // MainThreadUtils_h_
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