Boost Asio Serial Port Flush4/22/2021
This also allows the loop to exit when run() is terminated normally by a call to boost::asio::ioservice::stop().
Boost Asio Serial Port Flush Serial Ports MayWhile physical serial ports may not be as commonplace on new hardware as they once were, many devices still provide serial connectivity by creating virtual serial ports in the operating system that are associated with USB interfaces.
Communicating with these devices is a necessity, and, as the machines that they connect to range in architecture, it is important to write code that is portable and can be used in different environments. Boost Asio Serial Port Flush How To Send AndIn part I, we will show how to send and receive data over serial ports using the Boost C libraries in order to obtain sensor data. In part II, we will illustrate how to decode that data and publish it with OpenDDS 4. Boost Asio Serial Port Flush Windows 7 With VisualThis code has been tested under 64-bit Windows 7 with Visual Studio 2010 and Boost 1.51, as well as under 64-bit Ubuntu 12.10 with gcc 4.7.2 (with the --stdc11 option) and Boost 1.49. It uses MPC 5 for its build system. Members of the C Standards Committee participate in Boost development 8, so it is common for features that are part of Boost to later become part of the C Standard Library. We will use several of these libraries, and begin with Asio. ![]() Functions are posted to a boost::asio::ioservice object that implements the Proactor pattern 12 13 for asynchronous event dispatch. Asio allows user-defined functions to be posted, and provides its own functions for timers, signal handling, and for performing synchronous and asynchronous IO to resources such as devices, files, and network ports. As timers expire, signals are raised, data is available for reading, or worker threads become idle, posted functions are serviced, and user-provided callback functions are invoked with the result of the function execution. A worker thread is a user-created thread that calls the run() method of the boost::asio::ioservice object. If the number of threads is created based on automatic determination of hardware resources, the application will automatically scale, even without recompilation, as improved hardware is used. The equivalent Boost libraries are used in this article to illustrate the functionality that is available in Boost, as well as to aid in supporting older compilers. When not defined, as with code that uses ASIOLib, ASIOLibExport represents a library import. As this class represents a thread pool, the copy operation is not appropriate. The headers included are the one above, and for the Boost.Thread library 15. Boost.Thread provides portable threads and synchronization objects. The user of Executor can use this function to provide ioservice initialization, such as to queue work to perform (functions to execute). Here, the function to call, WorkerThread() is a class member, so a pointer to an object ( this, in our case) must be supplied. The remaining arguments to boost::bind() are arguments to pass to the function, which, in this case, is just the ioservice object passed by reference. ![]() Also, on error or exception, run() will exit, so must be invoked again to resume processing, otherwise the WokerThread() method will return and the worker thread will terminate. Here, run() is called again if an exception is raised by a work item so processing can continue for additional work items, but is not called again when an Asio error is generated.
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