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48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
#ifndef __KABU_ASYNCIO_HPP__
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#define __KABU_ASYNCIO_HPP__
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#ifndef _WIN32
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#include <aio.h>
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using SizeReturn = ssize_t;
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#else
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#include <windows.h>
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using SizeReturn = SSIZE_T;
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#endif
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#include "Util.hpp"
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#include <vector>
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namespace kabufuda
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{
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class AsyncIO
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{
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#ifndef _WIN32
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int m_fd = -1;
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std::vector<std::pair<struct aiocb, SizeReturn>> m_queue;
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#else
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#endif
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size_t m_maxBlock = 0;
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public:
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AsyncIO() = default;
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AsyncIO(SystemStringView filename, bool truncate = false);
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~AsyncIO();
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AsyncIO(AsyncIO&& other);
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AsyncIO& operator=(AsyncIO&& other);
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AsyncIO(const AsyncIO* other) = delete;
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AsyncIO& operator=(const AsyncIO& other) = delete;
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void resizeQueue(size_t queueSz) { m_queue.resize(queueSz); }
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SizeReturn syncRead(void* buf, size_t length, off_t offset);
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bool asyncRead(size_t qIdx, void* buf, size_t length, off_t offset);
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SizeReturn syncWrite(const void* buf, size_t length, off_t offset);
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bool asyncWrite(size_t qIdx, const void* buf, size_t length, off_t offset);
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ECardResult pollStatus(size_t qIdx, SizeReturn* szRet = nullptr) const;
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ECardResult pollStatus() const;
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void waitForCompletion() const;
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operator bool() const { return m_fd != -1; }
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};
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}
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#endif // __KABU_ASYNCIO_HPP__
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