mirror of
https://github.com/mozilla/gecko-dev.git
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61 lines
1.8 KiB
C++
61 lines
1.8 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsEdgeMigrationUtils.h"
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#include "mozilla/dom/Promise.h"
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#include "nsCOMPtr.h"
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#include "nsIEventTarget.h"
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#include <windows.h>
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namespace mozilla {
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NS_IMPL_ISUPPORTS(nsEdgeMigrationUtils, nsIEdgeMigrationUtils)
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NS_IMETHODIMP
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nsEdgeMigrationUtils::IsDbLocked(nsIFile* aFile, JSContext* aCx,
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dom::Promise** aPromise) {
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NS_ENSURE_ARG_POINTER(aFile);
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nsString path;
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nsresult rv = aFile->GetPath(path);
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NS_ENSURE_SUCCESS(rv, rv);
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ErrorResult err;
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RefPtr<dom::Promise> promise =
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dom::Promise::Create(xpc::CurrentNativeGlobal(aCx), err);
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if (MOZ_UNLIKELY(err.Failed())) {
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return err.StealNSResult();
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}
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nsMainThreadPtrHandle<dom::Promise> promiseHolder(
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new nsMainThreadPtrHolder<dom::Promise>("nsEdgeMigrationUtils Promise",
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promise));
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NS_DispatchBackgroundTask(NS_NewRunnableFunction(
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__func__,
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[promiseHolder = std::move(promiseHolder), path = std::move(path)]() {
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HANDLE file = ::CreateFileW(path.get(), GENERIC_READ, FILE_SHARE_READ,
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nullptr, OPEN_EXISTING, 0, nullptr);
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bool locked = true;
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if (file != INVALID_HANDLE_VALUE) {
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locked = false;
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::CloseHandle(file);
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}
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NS_DispatchToMainThread(NS_NewRunnableFunction(
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__func__, [promiseHolder = std::move(promiseHolder), locked]() {
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promiseHolder.get()->MaybeResolve(locked);
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}));
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}));
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promise.forget(aPromise);
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return NS_OK;
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}
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} // namespace mozilla
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