Sylvestre Ledru
5db00ce70c
replaced by .editorconfig # ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D287866
50 lines
1.3 KiB
C++
50 lines
1.3 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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#ifndef mozilla_CryptoTask_h
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#define mozilla_CryptoTask_h
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#include "nsThreadUtils.h"
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namespace mozilla {
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/**
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* Frequently we need to run a task on a background thread without blocking
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* the main thread, and then call a callback on the main thread with the
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* result. This class provides the framework for that. Subclasses must:
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*
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* (1) Override CalculateResult for the off-the-main-thread computation.
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* (2) Override CallCallback() for the on-the-main-thread call of the
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* callback.
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*/
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class CryptoTask : public Runnable {
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public:
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nsresult Dispatch();
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protected:
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CryptoTask() : Runnable("CryptoTask"), mRv(NS_ERROR_NOT_INITIALIZED) {}
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virtual ~CryptoTask() = default;
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/**
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* Called on a background thread (never the main thread). Its result will be
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* passed to CallCallback on the main thread.
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*/
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virtual nsresult CalculateResult() = 0;
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/**
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* Called on the main thread with the result from CalculateResult().
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*/
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virtual void CallCallback(nsresult rv) = 0;
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private:
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NS_IMETHOD Run() final;
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nsresult mRv;
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};
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} // namespace mozilla
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#endif // mozilla_CryptoTask_h
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