nonblocking

问题 I am playing a little with some non-blocking JavaScript loading. This means I have a small snippet of JavaScript in my head , and load all my external files at runtime. I even took it a little further to load CSS non-blocking. I see the articles I could find are a little outdated, that is why I want to know if this is all still relevant. Now first the scripts, they look like this: <script> (function () { var styles = JSON.parse(myObject.styles); for( name in styles ){ var link = document

问题 How do you do nonblocking console IO on Linux/OS X in C? 回答1: You don't, really. The TTY (console) is a pretty limited device, and you pretty much don't do non-blocking I/O. What you do when you see something that looks like non-blocking I/O, say in a curses/ncurses application, is called raw I/O . In raw I/O, there's no interpretation of the characters, no erase processing etc. Instead, you need to write your own code that checks for data while doing other things. In modern C programs, you

问题 How do you do nonblocking console IO on Linux/OS X in C? 回答1: You don't, really. The TTY (console) is a pretty limited device, and you pretty much don't do non-blocking I/O. What you do when you see something that looks like non-blocking I/O, say in a curses/ncurses application, is called raw I/O . In raw I/O, there's no interpretation of the characters, no erase processing etc. Instead, you need to write your own code that checks for data while doing other things. In modern C programs, you

问题 I'm working with Python and Raspberry Pi for the first time (it's a Pi 2) and trying to trigger a timed set of commands. I've got most of it figured out except the very end, where I want to kill all processes. The logic is as follows: -- Trigger an audio file (.wav) called "countdown" -- Trigger another audio file (.wav) called "dixie" -- While dixie is playing trigger a wget command to trigger a photo on my camera -- Keep playing "dixie" until the previous wget finishes executing -- When

问题 I understand how to use delegates to update controls on the main control thread, works like a charm. My problem here is if I'm adding a large DataSet (say 2000 items) to a bound DataGridView , it takes 5-8 seconds for the grid to populate and during that 5-8 seconds the whole GUI is locked. How can I update the DataGridView such that it doesn't lock the user interface? To be clear, the problem isn't that I'm doing a slow query to a database and the UI is blocking on that, I already have the

问题 I am using Windows socket for my application(winsock2.h). Since the blocking socket doesn't let me control connection timeout, I am using non-blocking one. Right after send command I am using shutdown command to flush(I have to). My timeout is 50ms and the thing I want to know is if the data to be sent is so big, is there a risk of sending only a portion of data or sending nothing at all? Thanks in advance... hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); u_long iMode=1; ioctlsocket

问题 The standard Ruby library "io/wait" provides a method on IO objects ready? that returns non-nil if there is input available, nil or false otherwise. I know some methods like sysread and syswrite are not safe to use with higher level methods such as gets and read , and wanted to know if ready? was safe to mix with the higher level methods. The ready method seems rather useful and perhaps more elegant than relying on IO.select , but, surprisingly enough, I haven't seen it used much. There is

问题 I want to capture "all" keyboard input on the command line immediately (without waiting for a new line) in a non-blocking way. This question demonstrates how you can read from stdin in a non-blocking way using select() . This is how it works: while True: if select.select([sys.stdin], [], [], 0)[0] == [sys.stdin]: print(sys.stdin.read(1)) ... do other stuff ... Unfortunately you only get results after pressing RETURN . My first guess was that stdin is just line buffered so after reading this

问题 This server works fine but if I do this bash$ (echo -n "abcd" ;sleep 50 ; echo "efgh") | nc localhost 9090 The server blocks for 50 seconds.In my complete code I have more than one IO::Select::INET . I have another socket listen other port (1234), and I can't process anything in that port while the server is blocking by the sleep. I try change the getline by getc but I only read the first letter "a" and it blocks. Someone can help me? use common::sense; use IO::Select; use IO::Socket; use

问题 Please tell me, Is Jetty non-blocking web server by default or not? For example, this code below runs Jetty as non-blocking web server? Server server = new Server(8080); ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS); context.setContextPath("/"); server.setHandler(context); context.addServlet(new ServletHolder(new MyServlet()),"/*"); server.start(); server.join(); Thank you!!! 回答1: It depends on which version of Jetty you're using. In Jetty 6, the