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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/. */
+
+#ifndef vm_HelperThreadTask_h
+#define vm_HelperThreadTask_h
+
+#include "mozilla/TimeStamp.h"
+
+#include "js/Utility.h"
+
+namespace js {
+
+class AutoLockHelperThreadState;
+struct DelazifyTask;
+struct FreeDelazifyTask;
+class SourceCompressionTask;
+
+namespace jit {
+class IonCompileTask;
+class IonFreeTask;
+} // namespace jit
+namespace wasm {
+struct Tier2GeneratorTask;
+} // namespace wasm
+
+template <typename T>
+struct MapTypeToThreadType {};
+
+template <>
+struct MapTypeToThreadType<jit::IonCompileTask> {
+ static const ThreadType threadType = THREAD_TYPE_ION;
+};
+
+template <>
+struct MapTypeToThreadType<wasm::Tier2GeneratorTask> {
+ static const ThreadType threadType = THREAD_TYPE_WASM_GENERATOR_TIER2;
+};
+
+template <>
+struct MapTypeToThreadType<DelazifyTask> {
+ static const ThreadType threadType = THREAD_TYPE_DELAZIFY;
+};
+
+template <>
+struct MapTypeToThreadType<FreeDelazifyTask> {
+ static const ThreadType threadType = THREAD_TYPE_DELAZIFY_FREE;
+};
+
+template <>
+struct MapTypeToThreadType<SourceCompressionTask> {
+ static const ThreadType threadType = THREAD_TYPE_COMPRESS;
+};
+
+struct HelperThreadTask {
+ virtual void runHelperThreadTask(AutoLockHelperThreadState& locked) = 0;
+ virtual ThreadType threadType() = 0;
+ virtual ~HelperThreadTask() = default;
+
+ template <typename T>
+ bool is() {
+ return MapTypeToThreadType<T>::threadType == threadType();
+ }
+
+ template <typename T>
+ T* as() {
+ MOZ_ASSERT(this->is<T>());
+ return static_cast<T*>(this);
+ }
+};
+
+} // namespace js
+
+#endif /* vm_HelperThreadTask_h */