100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: Schedular.cpp
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Date: 2021-6-26
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Author: Reece
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***/
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#include <RuntimeInternal.hpp>
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#include "Async.hpp"
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#include "Schedular.hpp"
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#include "AsyncApp.hpp"
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namespace Aurora::Async
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{
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struct SchedEntry
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{
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AuUInt64 ns;
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DispatchTarget_t target;
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AuSPtr<IAsyncRunnable> runnable;
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};
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static Threading::Threads::ThreadUnique_t gThread;
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static Threading::Primitives::RWLockUnique_t gSchedLock;
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static AuList<SchedEntry> gEntries;
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static void GetDispatchableTasks(AuList<SchedEntry> &pending)
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{
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Threading::LockGuardPtr lock(gSchedLock->AsReadable());
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auto time = Time::CurrentClockNS();
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for (auto itr = gEntries.begin(); itr != gEntries.end(); )
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{
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if (itr->ns <= time)
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{
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pending.push_back(std::move(*itr));
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itr = gEntries.erase(itr);
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}
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else
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{
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itr ++;
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}
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}
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}
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static void SchedThread()
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{
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AuUInt32 counter {};
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AuList<SchedEntry> pending;
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auto thread = Threading::Threads::GetThread();
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while (!thread->Exiting())
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{
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Threading::SleepNs(1000000 / 2);
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AuList<SchedEntry> pending;
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GetDispatchableTasks(pending);
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for (auto &entry : pending)
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{
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static_cast<AsyncApp *>(GetAsyncApp())->Run(entry.target, entry.runnable);
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DecRunningTasks();
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}
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counter++;
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if ((counter % 4) == 0)
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{
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// TODO: noting this should be called from main; however, we only pump console for.now
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RuntimeSysPump();
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}
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}
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}
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void InitSched()
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{
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gSchedLock = Threading::Primitives::RWLockUnique();
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Threading::Threads::AbstractThreadVectors handler;
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handler.DoRun = [=](const Threading::Threads::IAuroraThread *thread)
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{
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SchedThread();
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};
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gThread = Threading::Threads::ThreadUnique(handler);
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gThread->Run();
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}
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void ShutdownSched()
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{
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gThread.reset();
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gSchedLock.reset();
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}
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void Schedule(AuUInt64 ns, DispatchTarget_t target, AuSPtr<IAsyncRunnable> runnable)
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{
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Threading::LockGuardPtr lock(gSchedLock->AsWritable());
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IncRunningTasks();
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gEntries.push_back({ns, target, runnable});
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}
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} |