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libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
libevent+protobuf轻松搭建tcpserver1. 基础代码 设置某fd为O_NONBLOCK模式 int set_non_block(int fd); server端socket流程:socket(),setsoc...1. 基础代码
// 设置某fd为O_NONBLOCK模式
int set_non_block(int fd);
// server端socket流程:socket(),setsockopt(),bi...
How do I execute a command and get the output of the command within C++ using POSIX?
... with a POSIX compatibility layer...)
enum PIPE_FILE_DESCRIPTERS
{
READ_FD = 0,
WRITE_FD = 1
};
enum CONSTANTS
{
BUFFER_SIZE = 100
};
int
main()
{
int parentToChild[2];
int childToParent[2];
pid_t pid;
string dataReadFromChild;
char buffer[BUFFER_SIZE + 1]...
How to inspect FormData?
...rmData:
var myFormData = {
key1: 300,
key2: 'hello world'
};
var fd = new FormData();
for (var key in myFormData) {
console.log(key, myFormData[key]);
fd.append(key, myFormData[key]);
}
If you want to debug a plain FormData object, you could also send it in order to examine it in...
Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...h>
#define kPidFileName "app.pid"
bool enter_app_singleton() {
int fd = open(kPidFileName, O_RDWR | O_TRUNC);
if (fd == -1) {
//对应的锁文件当前不存在，试图创建该锁文件
fd = creat(kPidFileName, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
if (fd > 0) {
...
How can I get a file's size in C? [duplicate]
...
length = lseek(fd, 0, SEEK_END)+1;
– Volodymyr M. Lisivka
Nov 16 '12 at 16:24
25
...
What are file descriptors, explained in simple terms?
...it may not be same. When you open file, the operating system will assign a FD that is available and when you close it then OS release the FD and may assign that FD to another file opened after that. Its Operating system's way to track Opened Files and it has nothing to do with a specific file.
...
How do I make python wait for a pressed key?
...a signal gets
handled.
"""
import termios, fcntl, sys, os
fd = sys.stdin.fileno()
# save old state
flags_save = fcntl.fcntl(fd, fcntl.F_GETFL)
attrs_save = termios.tcgetattr(fd)
# make raw - the way to do this comes from the termios(3) man page.
attrs = list(attr...
Writing outputs to log file and console
... stdout and stderr output into the log file, but would also leave you with fd 3 connected to the console, so you can do
echo "Some console message" 1>&3
to write a message just to the console, or
echo "Some console and log file message" | tee /dev/fd/3
to write a message to both the con...
Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
...;
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
</dependentAssembly>
If you want to ensure all your Newtonsoft.Json packages are the same version, you...
Git commits are duplicated in the same branch after doing a rebase
...er understand what happened—here is an example:
You have a repository:
2a2e220 (HEAD, master) C5
ab1bda4 C4
3cb46a9 C3
85f59ab C2
4516164 C1
0e783a3 C0
You then proceed to change commits.
git rebase --interactive HEAD~3 # Three commits before where HEAD is pointing
(This is where you'll h...