/usr/include/Wt/WIOService is in libwt-dev 3.3.6+dfsg-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | // This may look like C code, but it's really -*- C++ -*-
/*
* Copyright (C) 2011 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef WCORE_SERVER_H_
#define WCORE_SERVER_H_
#include <boost/asio/io_service.hpp>
#include <boost/asio/deadline_timer.hpp>
#include <boost/asio/strand.hpp>
#include <boost/function.hpp>
namespace boost {
class thread;
}
#include <Wt/WDllDefs.h>
namespace Wt {
class WIOServiceImpl;
/**! \class WIOService Wt/WIOService Wt/WIOService
* \brief An I/O service.
*
* An I/O service combines a boost::asio::io_service with a thread pool.
*/
class WT_API WIOService : public boost::asio::io_service
{
public:
/*! \brief Creates a new IO service.
*
* \sa setServerConfiguration()
*/
WIOService();
virtual ~WIOService();
/*! \brief Configures the number of threads.
*
* This must be configured before the server is started using start().
*
* The default thread count is 5 (or is configured by WServer from
* information in the configuration file).
*/
void setThreadCount(int number);
/*! \brief Returns the thread count.
*/
int threadCount() const;
/*! \brief Starts the I/O service.
*
* This will start the internal thread pool to process work for
* the I/O service, if not already started.
*/
void start();
/*! \brief Stops the I/O service.
*
* This will stop the internal thread pool. The method will block until
* all work has been completed.
*/
void stop();
/*! \brief Posts a function into the thread-pool.
*
* The function will be executed within a thread of the thread-pool.
*
* This method returns immediately.
*/
void post(const boost::function<void ()>& function);
/*! \brief Schedules a function on the thread-pool.
*
* The function will be executed after a time out, specified in
* milli-seconds, on the thread pool.
*/
void schedule(int milliSeconds, const boost::function<void()>& function);
/*! \brief Initializes a thread.
*
* This function is called for every new thread created, and can be used
* to configure the thread, e.g. with respect to scheduling priorities.
*/
virtual void initializeThread();
// returns false if blocking an extra thread would block the last thread
// if true is returned, a counter that keeps track of the amount of threads
// doing blocking operations is incremented
// Typical use case example: recursive event loop
bool requestBlockedThread();
// decrement the blocked thread counter
void releaseBlockedThread();
private:
WIOServiceImpl *impl_;
strand strand_;
void handleTimeout(boost::asio::deadline_timer *timer,
const boost::function<void ()>& function,
const boost::system::error_code& e);
void run();
};
}
#endif // WCORE_SERVER_H_
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