110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: IProcess.hpp
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Date: 2021-6-9
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Author: Reece
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***/
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#pragma once
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namespace Aurora::Threading
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{
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struct IWaitable;
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}
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namespace Aurora::Processes
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{
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struct IProcess
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{
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/**
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* @brief High performance thread primitive to synchronize against the process
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* @deprecated - but not really. You should rethink your code design if you're
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* using this over the loop source. Won't remove. Has legitmate
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* use cases. You could use this lock state as 'has terminated'
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* @return
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*/
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virtual AuSPtr<Threading::IWaitable> AsWaitable() = 0;
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/**
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* @brief Kernel synchronization primitive to synchronize against the process
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*
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*/
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virtual AuSPtr<IO::Loop::ILoopSource> AsLoopSource() = 0;
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/**
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* @brief returns the exit code of the process should we outlive them
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* @return
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*/
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virtual AuSInt GetExitCode() = 0;
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/**
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* @brief returns *something* about the process. you should not use this
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* @return
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*/
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virtual AuUInt GetProcessId() = 0;
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/**
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* @brief Creates the process, for the first and only time, given the input
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* StartupParameters provided to the relevant Spawn function
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* @return
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*/
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virtual bool Start() = 0;
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/**
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* @brief Forcefully terminates the process
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* @return
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*/
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virtual bool Terminate() = 0;
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/**
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* WARNING: this function **MAY** block for quite some time.
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* @brief Sends SIGTERM, Close all Windows under watchdog, and/or conhost
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terminate key sequence to the process
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* @return whether or not the thread is still alive at the end of the kill
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* attempt.
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*/
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virtual bool TryKill() = 0;
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/**
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* @brief Reads asynchronously or synchronously (@param nonblock) destination span length from the stream
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* If the destination pointer is null, the AuMemoryStreamWrite output variable with be assigned to the available bytes for possible sync or async read
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* @param stream Specifies the standard C stream for stdin/out UNIX style IPC
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* @param destination Memory span of output bytes, should the intention be to _read_ from the stream specified by the stream EStandardHandle.
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* If the input span is null, outVariable is assigned the available bytes in the IPC buffer
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* @param nonblock
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* @return
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*/
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virtual bool Read(EStandardHandle stream, const Memory::MemoryViewStreamWrite &destination, bool nonblock = true) = 0;
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/**
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* @brief Synchronously writes `source` bytes to the processes stdin stream
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* @param source
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* @return
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*/
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virtual bool Write(const Memory::MemoryViewStreamRead &source) = 0;
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/**
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* @brief Returns an asynchronous file stream transaction of pipe pair: stdout, stdin
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* @return
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*/
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virtual AuSPtr<IO::IAsyncTransaction> NewAsyncTransaction() = 0;
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/**
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* @brief Returns an asynchronous file stream transaction of pipe pair: stderr, INVALID
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* @return
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*/
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virtual AuSPtr<IO::IAsyncTransaction> NewErrorStreamAsyncTransaction() = 0;
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/**
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* @brief returns the handle backing NewAsyncTransaction
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* @return
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*/
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virtual AuSPtr<IO::IIOHandle> GetOutputAndInputHandles() = 0;
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/**
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* @brief returns the handle backing NewErrorStreamAsyncTransaction
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* @return
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*/
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virtual AuSPtr<IO::IIOHandle> GetErrorStreamHandle() = 0;
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};
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} |