87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
/***
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Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: IOSubmit.Linux.hpp
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Date: 2022-4-12
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Author: Reece
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Note: I want APCs, overlapped, and event based IO on Linux. Gib.
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***/
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#pragma once
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#include <linux/aio_abi.h>
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#include <poll.h>
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namespace Aurora::IO::UNIX
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{
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struct ASubmittable
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{
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ASubmittable();
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~ASubmittable();
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virtual void LIOS_Process(AuUInt32 read, bool failure, int err, bool mark) = 0;
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void LIOS_SendProcess(AuUInt32 read, bool failure, int err, bool mark = false);
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void LIOS_Init(const AuSPtr<void> &pin);
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void LIOS_Reset();
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bool LIOS_Cancel();
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bool HasState();
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void LIOS_ProcessStack(AuUInt32 read, bool failure, int err, bool mark);
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#if defined(__AUHAS_COROUTINES_CO_AWAIT) && defined(AU_LANG_CPP_20_)
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AuVoidTask LIOS_ProcessStack_(AuUInt32 read, bool failure, int err, bool mark);
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#endif
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void SetMemory(const AuMemoryViewRead &view);
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void SetMemory(const AuMemoryViewWrite &view);
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AuUInt64 GetData();
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AuUInt64 GetBuf();
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AuUInt GetBufLength();
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iocb & GetIOCB();
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int GetOrCreateFdPollForBlockingRead(int fd);
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// Hack for blocking reads
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bool bIsReadPending {};
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bool bIsWritePending {};
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AuUInt64 offset2 {};
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int fd2 {};
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AuLoop::ILSEvent *optEvent2 {};
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aio_context_t abortContext {};
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// TODO:
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AuSPtr<void> pin_;
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AuSPtr<void> memPin_;
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AuMemoryViewRead readView;
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AuMemoryViewWrite writeView;
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private:
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AuUInt64 dataPtr_ {};
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AuUInt dataLen_ {};
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int tempEPoll {-1};
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iocb cb {};
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};
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// Yield/Wait shims
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bool LinuxOverlappedWaitForOne (AuUInt32 timeout, AuUInt read, AuUInt write, bool &bReadTriggered, bool &bWriteTriggered);
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bool LinuxOverlappedWaitForAtleastOne(AuUInt32 timeout, const AuList<AuUInt> &handles, const AuList<AuUInt> &handlesWrite, AuUInt &one, AuUInt &two);
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bool LinuxOverlappedPoll (AuUInt32 timeout);
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int LinuxOverlappedEpollShim(int epfd, struct epoll_event *events,
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int maxevents, int timeout);
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// TODO:
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//int LinuxOverlappedPosixPoll(struct pollfd *pPollFDs, nfds_t uCount, int timeout);
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bool LinuxOverlappedYield(bool bUserspaceOnly = false);
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// Work queue
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bool LinuxOverlappedSubmitRead (int fd, AuUInt offset, ASubmittable *context, AuLoop::ILSEvent *optEvent, bool bWaitForRead = false /* use on unsupported blocking interfaces. costs an epoll to work around >current< limitiations in io_submit*/);
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bool LinuxOverlappedSubmitWrite(int fd, AuUInt offset, ASubmittable *context, AuLoop::ILSEvent *optEvent);
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// TODO: Stream copy operations
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// Bookkeeping
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bool SendIOBuffers();
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} |