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OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...CE_BTF [default: none] BTF file
EXAMPLES:
bpftrace -l '*sleep*'
list probes containing "sleep"
bpftrace -e 'kprobe:do_nanosleep { printf("PID %d sleeping...\n", pid); }'
trace processes calling sleep
bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @[comm] = count(); }...
App Inventor 2 列表代码块 · App Inventor 2 中文网
...表
创建有序列表
创建带比较器的有序列表
创建带键函数的有序列表
列表中的最小值
列表中的最大值
去除首个元素的列表
去除末尾元素的列表
截取列表
案例：列表遍历
案例：列表转JSON
案例：JSON转列表
案...
Implement C# Generic Timeout
...hod, 4000);
}
static void FiveSecondMethod()
{
Thread.Sleep(5000);
}
The static method doing the work:
static void CallWithTimeout(Action action, int timeoutMilliseconds)
{
Thread threadToKill = null;
Action wrappedAction = () =>
{
...
How to create a loop in bash that is waiting for a webserver to respond?
...v/null --silent --head --fail http://myhost:myport); do
printf '.'
sleep 5
done
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Handling InterruptedException in Java
... as Callable, or follow the second approach above.
Calling Thread.sleep: You're attempting to read a file and the spec says you should try 10 times with 1 second in between. You call Thread.sleep(1000). So, you need to deal with InterruptedException. For a method such as tryToReadFile it ma...
What is the difference between packaged_task and async
...gave shows the differences if you use a rather long function, such as
//! sleeps for one second and returns 1
auto sleep = [](){
std::this_thread::sleep_for(std::chrono::seconds(1));
return 1;
};
Packaged task
A packaged_task won't start on it's own, you have to invoke it:
std::packaged...
Python: Making a beep noise
...more pythonic manner :
import os
beep = lambda x: os.system("echo -n '\a';sleep 0.2;" * x)
beep(3)
Notes :
the sleep value (here 0.2), depends on the length (seconds) of your default beep sound
I choosed to use os.system rather then subprocess.Popen for simplicity (it could be bad)
the '-n' for...
RuntimeError on windows trying python multiprocessing
...cess
import time
start = time.perf_counter()
def do_something(time_for_sleep):
print(f'Sleeping {time_for_sleep} second...')
time.sleep(time_for_sleep)
print('Done Sleeping...')
p1 = Process(target=do_something, args=[1])
p2 = Process(target=do_something, args=[2])
if
__name__...
How to send SMS in Java
...+CMGS="+quotes + phoneNumber +quotes+ "\r\n");
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// send("AT+CMGS=\""+ phoneNumber +"\"\r\n");
send(message + '\032');
S...
MFC RadioButton用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...lic:
CRadioButtonInstanceDlg(CWnd* pParent = NULL); // 标准构造函数
// 对话框数据
enum { IDD = IDD_RADIOBUTTONINSTANCE_DIALOG };
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持
// 实现
protected:
HICON m_hIco...