126 lines
4.0 KiB
Plaintext
126 lines
4.0 KiB
Plaintext
// 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 <memory>
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#include <string>
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#include <vector>
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#include "../shared/OwnedHandle.h"
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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() { closePipe(); }
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bool serviceIo(std::vector<HANDLE> *waitHandles);
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void startPipeWorkers();
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enum class ServiceResult { NoProgress, Error, Progress };
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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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ServiceResult service();
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void waitForCanceledIo();
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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 = false;
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DWORD m_currentIoSize = 0;
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OwnedHandle 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(DWORD size) = 0;
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virtual bool shouldIssueIo(DWORD *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(DWORD size) override;
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virtual bool shouldIssueIo(DWORD *size, bool *isRead) override;
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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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DWORD getPendingIoSize();
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protected:
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virtual void completeIo(DWORD size) override;
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virtual bool shouldIssueIo(DWORD *size, bool *isRead) override;
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};
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public:
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struct OpenMode {
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typedef int t;
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enum { None = 0, Reading = 1, Writing = 2, Duplex = 3 };
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};
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std::wstring name() const { return m_name; }
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void openServerPipe(LPCWSTR pipeName, OpenMode::t openMode,
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int outBufferSize, int inBufferSize);
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void connectToServer(LPCWSTR pipeName, OpenMode::t openMode);
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size_t bytesToSend();
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void write(const void *data, size_t size);
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void write(const char *text);
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size_t readBufferSize();
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void setReadBufferSize(size_t size);
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size_t bytesAvailable();
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size_t peek(void *data, size_t size);
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size_t read(void *data, size_t size);
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std::string readToString(size_t size);
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std::string readAllToString();
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void closePipe();
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bool isClosed() { return m_handle == nullptr; }
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bool isConnected() { return !isClosed() && !isConnecting(); }
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bool isConnecting() { return m_connectEvent.get() != nullptr; }
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private:
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// Input/output buffers
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std::wstring m_name;
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OVERLAPPED m_connectOver = {};
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OwnedHandle m_connectEvent;
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OpenMode::t m_openMode = OpenMode::None;
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size_t m_readBufferSize = 64 * 1024;
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std::string m_inQueue;
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std::string m_outQueue;
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HANDLE m_handle = nullptr;
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std::unique_ptr<InputWorker> m_inputWorker;
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std::unique_ptr<OutputWorker> m_outputWorker;
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};
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#endif // NAMEDPIPE_H
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