103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
// Copyright (c) 2011-2012 Ryan Prichard
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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#ifndef NAMEDPIPE_H
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#define NAMEDPIPE_H
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#include <windows.h>
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#include <string>
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#include <vector>
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class EventLoop;
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class NamedPipe
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{
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private:
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// The EventLoop uses these private members.
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friend class EventLoop;
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NamedPipe();
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~NamedPipe();
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bool serviceIo(std::vector<HANDLE> *waitHandles);
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private:
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class IoWorker
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{
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public:
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IoWorker(NamedPipe *namedPipe);
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virtual ~IoWorker();
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int service();
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HANDLE getWaitEvent();
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protected:
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NamedPipe *m_namedPipe;
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bool m_pending;
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int m_currentIoSize;
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HANDLE m_event;
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OVERLAPPED m_over;
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enum { kIoSize = 64 * 1024 };
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char m_buffer[kIoSize];
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virtual void completeIo(int size) = 0;
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virtual bool shouldIssueIo(int *size, bool *isRead) = 0;
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};
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class InputWorker : public IoWorker
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{
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public:
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InputWorker(NamedPipe *namedPipe) : IoWorker(namedPipe) {}
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protected:
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virtual void completeIo(int size);
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virtual bool shouldIssueIo(int *size, bool *isRead);
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};
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class OutputWorker : public IoWorker
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{
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public:
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OutputWorker(NamedPipe *namedPipe) : IoWorker(namedPipe) {}
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int getPendingIoSize();
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protected:
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virtual void completeIo(int size);
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virtual bool shouldIssueIo(int *size, bool *isRead);
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};
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public:
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bool connectToServer(LPCWSTR pipeName);
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int bytesToSend();
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void write(const void *data, int size);
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void write(const char *text);
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int readBufferSize();
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void setReadBufferSize(int size);
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int bytesAvailable();
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int peek(void *data, int size);
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std::string read(int size);
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std::string readAll();
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void closePipe();
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bool isClosed();
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private:
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// Input/output buffers
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int m_readBufferSize;
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std::string m_inQueue;
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std::string m_outQueue;
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HANDLE m_handle;
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InputWorker *m_inputWorker;
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OutputWorker *m_outputWorker;
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};
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#endif // NAMEDPIPE_H
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