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Implement Win32 AsyncIO

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This commit is contained in:
Jack Andersen
2018-02-06 15:36:51 -10:00
parent bdf4bd07a8
commit 3b10be80f7
4 changed files with 229 additions and 54 deletions
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11
include/kabufuda/AsyncIO.hpp
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@@ -6,7 +6,7 @@
using SizeReturn = ssize_t;
#else
#include <windows.h>
using SizeReturn = SSIZE_T;
using SizeReturn = DWORD;
#endif
#include "Util.hpp"
@@ -21,7 +21,10 @@ class AsyncIO
int m_fd = -1;
std::vector<std::pair<struct aiocb, SizeReturn>> m_queue;
#else
HANDLE m_fh = INVALID_HANDLE_VALUE;
std::vector<std::pair<OVERLAPPED, SizeReturn>> m_queue;
#endif
void _waitForOperation(size_t qIdx) const;
size_t m_maxBlock = 0;
public:
AsyncIO() = default;
@@ -32,14 +35,16 @@ public:
AsyncIO(const AsyncIO* other) = delete;
AsyncIO& operator=(const AsyncIO& other) = delete;
void resizeQueue(size_t queueSz) { m_queue.resize(queueSz); }
SizeReturn syncRead(void* buf, size_t length, off_t offset);
bool asyncRead(size_t qIdx, void* buf, size_t length, off_t offset);
SizeReturn syncWrite(const void* buf, size_t length, off_t offset);
bool asyncWrite(size_t qIdx, const void* buf, size_t length, off_t offset);
ECardResult pollStatus(size_t qIdx, SizeReturn* szRet = nullptr) const;
ECardResult pollStatus() const;
void waitForCompletion() const;
#ifndef _WIN32
operator bool() const { return m_fd != -1; }
#else
operator bool() const { return m_fh != INVALID_HANDLE_VALUE; }
#endif
};
}