/usr/include/qpid/sys/AsynchIO.h is in libqpidcommon2-dev 0.16-9ubuntu2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | #ifndef _sys_AsynchIO
#define _sys_AsynchIO
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/sys/IntegerTypes.h"
#include "qpid/CommonImportExport.h"
#include <string.h>
#include <boost/function.hpp>
#include <boost/shared_ptr.hpp>
namespace qpid {
namespace sys {
class Socket;
class Poller;
/*
* Asynchronous acceptor: accepts connections then does a callback with the
* accepted fd
*/
class AsynchAcceptor {
public:
typedef boost::function1<void, const Socket&> Callback;
QPID_COMMON_EXTERN static AsynchAcceptor* create(const Socket& s, Callback callback);
virtual ~AsynchAcceptor() {};
virtual void start(boost::shared_ptr<Poller> poller) = 0;
};
/*
* Asynchronous connector: starts the process of initiating a connection and
* invokes a callback when completed or failed.
*/
class AsynchConnector {
public:
typedef boost::function1<void, const Socket&> ConnectedCallback;
typedef boost::function3<void, const Socket&, int, const std::string&> FailedCallback;
// Call create() to allocate a new AsynchConnector object with the
// specified poller, addressing, and callbacks.
// This method is implemented in platform-specific code to
// create a correctly typed object. The platform code also manages
// deletes. To correctly manage heaps when needed, the allocate and
// delete should both be done from the same class/library.
QPID_COMMON_EXTERN static AsynchConnector* create(const Socket& s,
const std::string& hostname,
const std::string& port,
ConnectedCallback connCb,
FailedCallback failCb);
virtual void start(boost::shared_ptr<Poller> poller) = 0;
virtual void stop() {};
protected:
AsynchConnector() {}
virtual ~AsynchConnector() {}
};
struct AsynchIOBufferBase {
char* const bytes;
const int32_t byteCount;
int32_t dataStart;
int32_t dataCount;
AsynchIOBufferBase(char* const b, const int32_t s) :
bytes(b),
byteCount(s),
dataStart(0),
dataCount(0)
{}
virtual ~AsynchIOBufferBase()
{}
void squish() {
if (dataStart != 0) {
::memmove(bytes, bytes + dataStart, dataCount);
dataStart = 0;
}
}
};
/*
* Asychronous reader/writer:
* Reader accepts buffers to read into; reads into the provided buffers
* and then does a callback with the buffer and amount read. Optionally it
* can callback when there is something to read but no buffer to read it into.
*
* Writer accepts a buffer and queues it for writing; can also be given
* a callback for when writing is "idle" (ie fd is writable, but nothing
* to write).
*/
class AsynchIO {
public:
typedef AsynchIOBufferBase BufferBase;
typedef boost::function2<void, AsynchIO&, BufferBase*> ReadCallback;
typedef boost::function1<void, AsynchIO&> EofCallback;
typedef boost::function1<void, AsynchIO&> DisconnectCallback;
typedef boost::function2<void, AsynchIO&, const Socket&> ClosedCallback;
typedef boost::function1<void, AsynchIO&> BuffersEmptyCallback;
typedef boost::function1<void, AsynchIO&> IdleCallback;
typedef boost::function1<void, AsynchIO&> RequestCallback;
// Call create() to allocate a new AsynchIO object with the specified
// callbacks. This method is implemented in platform-specific code to
// create a correctly typed object. The platform code also manages
// deletes. To correctly manage heaps when needed, the allocate and
// delete should both be done from the same class/library.
QPID_COMMON_EXTERN static AsynchIO* create(const Socket& s,
ReadCallback rCb,
EofCallback eofCb,
DisconnectCallback disCb,
ClosedCallback cCb = 0,
BuffersEmptyCallback eCb = 0,
IdleCallback iCb = 0);
public:
virtual void queueForDeletion() = 0;
virtual void start(boost::shared_ptr<Poller> poller) = 0;
virtual void queueReadBuffer(BufferBase* buff) = 0;
virtual void unread(BufferBase* buff) = 0;
virtual void queueWrite(BufferBase* buff) = 0;
virtual void notifyPendingWrite() = 0;
virtual void queueWriteClose() = 0;
virtual bool writeQueueEmpty() = 0;
virtual void startReading() = 0;
virtual void stopReading() = 0;
virtual void requestCallback(RequestCallback) = 0;
virtual BufferBase* getQueuedBuffer() = 0;
protected:
// Derived class manages lifetime; must be constructed using the
// static create() method. Deletes not allowed from outside.
AsynchIO() {}
virtual ~AsynchIO() {}
};
}}
#endif // _sys_AsynchIO
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