92 lines
4.1 KiB
C++
92 lines
4.1 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: IThreadPool.hpp
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Date: 2021-11-1
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Author: Reece
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***/
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#pragma once
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namespace Aurora::Loop
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{
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struct ILoopQueue;
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}
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namespace Aurora::Async
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{
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AUE_DEFINE(ERunMode,
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(
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eLowLatencyYield, // uses high perf cond var + yield + trylock
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eLowLatencyFreqKernel, // uses high perf cond var + timeout(freqency)
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eEfficient // delegates sleep to the kernel once kernel objects are scheduled
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));
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struct RunMode
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{
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ERunMode mode;
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AuUInt16 freqMsTick;
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};
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struct IThreadPool
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{
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// Spawning
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virtual bool Spawn(WorkerId_t workerId) = 0;
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// Event runner threads release the entire application upon encountering a zero work condition allowing for a clean exit of event driven apps without the headache of carefully chaining together exit callbacks
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// Applications that aren't designed around an event driven model should set runner to false to keep the around during global work exhaustion
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// tl'dr: runner = true, async app; runner = false, thread pool
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virtual void SetRunningMode(bool eventRunning) = 0;
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// Converts the current thread into an async thread
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// Use with RunOnce, Poll
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virtual bool Create(WorkerId_t workerId) = 0;
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//virtual bool CreateAndRun(WorkerId_t workerId) = 0;
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// @returns any threads with runner = true
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virtual bool InRunnerMode() = 0;
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// Manual execution (system thread and ::Create() users)
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virtual bool Poll() = 0;
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virtual bool RunOnce() = 0;
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virtual bool Run() = 0;
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//
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virtual void Shutdown() = 0;
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virtual bool Exiting() = 0;
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//
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virtual AuSPtr<IWorkItem> NewWorkItem(const WorkerId_t &worker, const AuSPtr<IWorkItemHandler> &task, bool supportsBlocking = false) = 0;
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virtual AuSPtr<IWorkItem> NewFence() = 0;
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//
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virtual Threading::Threads::ThreadShared_t ResolveHandle(WorkerId_t) = 0;
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//
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virtual AuBST<ThreadGroup_t, AuList<ThreadId_t>> GetThreads() = 0;
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//
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virtual WorkerId_t GetCurrentThread() = 0;
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// Synchronization
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// Note: syncing to yourself will nullify requireSignal to prevent deadlock conditions
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virtual bool Sync(WorkerId_t workerId, AuUInt32 timeoutMs = 0, bool requireSignal = false) = 0;
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virtual void Signal(WorkerId_t workerId) = 0;
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virtual AuSPtr<Loop::ILoopSource> WorkerToLoopSource(WorkerId_t id) = 0;
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virtual void SyncAllSafe() = 0;
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// Features
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virtual void AddFeature(WorkerId_t id, AuSPtr<Threading::Threads::IThreadFeature> feature, bool async = false) = 0;
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// Debug
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virtual void AssertInThreadGroup(ThreadGroup_t group) = 0;
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virtual void AssertWorker(WorkerId_t id) = 0;
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// Async subsystem glue
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virtual AuSPtr<Loop::ILoopQueue> ToKernelWorkQueue() = 0;
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virtual AuSPtr<Loop::ILoopQueue> ToKernelWorkQueue(WorkerId_t workerId) = 0;
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virtual void UpdateWorkMode(WorkerId_t workerId, RunMode mode) = 0;
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virtual ERunMode GetCurrentThreadRunMode() = 0;
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virtual ERunMode GetThreadRunMode(WorkerId_t workerId) = 0;
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};
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} |