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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /xpcom/threads/MainThreadUtils.h | |
| parent | Initial commit. (diff) | |
| download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip | |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'xpcom/threads/MainThreadUtils.h')
| -rw-r--r-- | xpcom/threads/MainThreadUtils.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/xpcom/threads/MainThreadUtils.h b/xpcom/threads/MainThreadUtils.h new file mode 100644 index 0000000000..152805eb66 --- /dev/null +++ b/xpcom/threads/MainThreadUtils.h @@ -0,0 +1,60 @@ +/* -*- 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_ |