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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/. */
+
+/*
+ * An internal thread pool, used for the shell and when
+ * JS::SetHelperThreadTaskCallback not called.
+ */
+
+#ifndef vm_InternalThreadPool_h
+#define vm_InternalThreadPool_h
+
+#include "js/AllocPolicy.h"
+#include "js/UniquePtr.h"
+#include "js/Vector.h"
+#include "threading/ConditionVariable.h"
+#include "threading/ProtectedData.h"
+
+namespace JS {
+enum class DispatchReason;
+};
+
+namespace js {
+
+class AutoLockHelperThreadState;
+class HelperThread;
+
+using HelperThreadVector =
+ Vector<UniquePtr<HelperThread>, 0, SystemAllocPolicy>;
+
+class InternalThreadPool {
+ public:
+ static bool Initialize(size_t threadCount, AutoLockHelperThreadState& lock);
+ static void ShutDown(AutoLockHelperThreadState& lock);
+
+ static bool IsInitialized() { return Instance; }
+ static InternalThreadPool& Get();
+
+ bool ensureThreadCount(size_t threadCount, AutoLockHelperThreadState& lock);
+ size_t threadCount(const AutoLockHelperThreadState& lock);
+
+ size_t sizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf,
+ const AutoLockHelperThreadState& lock) const;
+
+ private:
+ static void DispatchTask(JS::DispatchReason reason);
+
+ void dispatchTask(JS::DispatchReason reason);
+ void shutDown(AutoLockHelperThreadState& lock);
+
+ HelperThreadVector& threads(const AutoLockHelperThreadState& lock);
+ const HelperThreadVector& threads(
+ const AutoLockHelperThreadState& lock) const;
+
+ void notifyAll(const AutoLockHelperThreadState& lock);
+ void wait(AutoLockHelperThreadState& lock);
+ friend class HelperThread;
+
+ static InternalThreadPool* Instance;
+
+ HelperThreadLockData<HelperThreadVector> threads_;
+
+ js::ConditionVariable wakeup;
+
+ HelperThreadLockData<size_t> queuedTasks;
+
+ HelperThreadLockData<bool> terminating;
+};
+
+} // namespace js
+
+#endif /* vm_InternalThreadPool_h */