file-descriptor

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Duplicate file descriptor after popen

I am using popen to execute a command under linux, then 4 process wile use the same output. I am trying to duplicate the file descriptor again to pass it to e开发者_如何转开发ach process.[详细]

2022-12-29 22:34 分类：问答
bad file descriptor with close() socket (c++)

I\'m running out of file descriptors when my program can\'t connect another host. The close() system call doesn\'t work, the number of open sockets increases. I can se it with[详细]

2022-12-27 06:52 分类：问答
file descriptors and open files

I have two q开发者_C百科uick questions: When do two file descriptors point to the same open file ?[详细]

2022-12-24 12:42 分类：问答
What's the difference between a file descriptor and file pointer?

I want to know the difference between a file descriptor and file pointer. Also, in what scenario would you use one inste开发者_Python百科ad of the other?A file descriptor is a low-level integer \"han[详细]

2022-12-22 09:44 分类：问答
What is the theoretical maximum number of open TCP connections that a modern Linux box can have

Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections? I understand that the number of ephemeral ports (<65536) limits the number of connections from one[详细]

2022-12-21 09:28 分类：问答
Redirect stderr to stdout on exec-ed process from python?

In a bash script, I can write: exec 2>&1 exec someprog And the stderr output of someprog would be redirected to stdout.[详细]

2022-12-21 01:16 分类：问答
How do Perl file descriptors work on Windows?

Are file descriptors supported on windows?Why do things \"seem to work\" in Perl with fds? Things like \"fileno\", \"dup\" and \"dup2\" were working but then randomly inside some other environment, s[详细]

2022-12-19 11:56 分类：问答
Example for using Python Twisted with File Descriptors

I\'m looking to use twisted to control communication across Linux pipes (os.pipe()) and fifos (os.mkfifo()) between a master process and a set of slave processes. While I\'m positive tat it\'s possibl[详细]

2022-12-17 13:05 分类：问答
IOException: Too many open files

I\'m trying to debug a file descriptor leak in a Java webapp running in Jetty 7.0.1 on Linux. The app had been happily running for a month or so when requests started to fail due to too many open fil[详细]

2022-12-16 05:26 分类：问答
Empty or "flush" a file descriptor without read()?

(Note: This is not a question of how to flush a write(). This is the other end of it, so to speak.) Is it possible to empty a file descriptor that has data to be read in it without having to read() i[详细]

2022-12-14 19:35 分类：问答