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可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
...elset
tcsetattr
cfsetospeed
geteuid
pselect
sigemptyset
tcsetpgrp
chdir
getgid
raise
sigfillset
time
chmod
getgroups
read
sigismember
timer_getoverrun
...
What is recursion and when should I use it?
...
Simple english example of recursion.
A child couldn't sleep, so her mother told her a story about a little frog,
who couldn't sleep, so the frog's mother told her a story about a little bear,
who couldn't sleep, so the bear's mother told her a story about a little w...
How to close this ssh tunnel? [closed]
...34 server &
pid=$!
echo "waiting a few seconds to establish tunnel..."
sleep 5
... do yer stuff... launch mysql workbench whatever
echo "killing ssh tunnel $pid"
kill $pid
Or better yet, just create this as a wrapper script:
# backend-tunnel <your cmd line, possibly 'bash'>
ssh -N -L123...
Execute script after specific delay using JavaScript
...s available for other threads/processes (e.g. other tabs, other programs). Sleep, by contrast, temporarily suspends a thread's use of system resources.
– ramcdougal
Jul 1 '14 at 6:13
...
Numpy - add row to array
...0 rows, one at a time:
import numpy as np
from time import perf_counter, sleep
def time_it():
# Compare performance of two methods for adding rows to numpy array
py_array = [[0, 1, 2], [0, 2, 0]]
py_row = [4, 5, 6]
numpy_array = np.array(py_array)
numpy_row = np.array([4,5,6])...
How do I daemonize an arbitrary script in unix?
...ft
# Run command until we're killed.
while true; do
$COMMAND "$@"
sleep 10 # if command dies immediately, don't go into un-ctrl-c-able loop
done
The first argument is the name of the pid file to use. The second argument is the command. And all other arguments are the command's arguments.
...
Creating a daemon in Linux
...nize.c
* This example daemonizes a process, writes a few log messages,
* sleeps 20 seconds and terminates afterwards.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sy...
What does “O(1) access time” mean?
...nce in the runtime: e.g., int main() { int n; cin >> n; if(n == 0) { sleep(60 * 60 * 24 * 365); } cout << n; } is O(1).
– jason
Jan 8 '10 at 19:04
...
Is it possible to capture a Ctrl+C signal and run a cleanup function, in a “defer” fashion?
... cleanup()
os.Exit(1)
}()
for {
fmt.Println("sleeping...")
time.Sleep(10 * time.Second) // or runtime.Gosched() or similar per @misterbee
}
}
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impro...
Display the current time and date in an Android application
... try {
doWork();
Thread.sleep(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}catch(Exception e){
}
}
}
}
...