forked from mirrors/gecko-dev
10438c2029
Backed out changeset 4c5efaca4057 (bug 1888429) Backed out changeset 8b30cb54d5d9 (bug 1888429) Backed out changeset c82b988fab50 (bug 1888429) Backed out changeset b64446651983 (bug 1888429)
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=8 sts=2 et sw=2 tw=80:
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* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* API for supplying an external thread pool to run internal work off the main
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* thread.
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*/
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#ifndef js_HelperThreadAPI_h
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#define js_HelperThreadAPI_h
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#include <stddef.h> // size_t
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#include "jstypes.h" // JS_PUBLIC_API
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namespace JS {
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// Argument passed to the task callback to indicate whether we're invoking it
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// because a new task was added by the JS engine or because we're on a helper
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// thread that just finished a task and there are other tasks pending.
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enum class DispatchReason { NewTask, FinishedTask };
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/**
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* Set callback to dispatch a tasks to an external thread pool.
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*
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* When the task runs it should call JS::RunHelperThreadTask.
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*/
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using HelperThreadTaskCallback = void (*)(DispatchReason reason);
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extern JS_PUBLIC_API void SetHelperThreadTaskCallback(
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HelperThreadTaskCallback callback, size_t threadCount, size_t stackSize);
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// Function to call from external thread pool to run a helper thread task.
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extern JS_PUBLIC_API void RunHelperThreadTask();
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} // namespace JS
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#endif // js_HelperThreadAPI_h
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