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Linux bpftrace学习笔记(持续更新) - 操作系统(内核) - 清泛网移动版 - ...
...lib64/gconv/gconv-modules.cache
[...]
2、列出与open系统调用相关的跟踪点函数名:
# bpftrace -l 'tracepoint:syscalls:sys_enter_open*'
tracepoint:syscalls:sys_enter_open_by_handle_at
tracepoint:syscalls:sys_enter_open
tracepoint:syscalls:sys_enter_openat
3、工具开始运...
What is ECMAScript?
...ript validator and everybody who works with JavaScript will tell you that
alert("hello World");
is valid JavaScript. And I'd also agree.
However, a ECMAScript validator will probably tell you it is not valid, because alert() is not part of the ECMAScript, but a typically feature of JavaScript fo...
scoped_ptr 与 auto_ptr 与 shared_ptr 区别总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...hared_ptr 区别总结1.auto_ptr 被复制后,将失去原来所致资源的所有权;2.scoped_ptr永远不能被复制或被赋值!scoped_ptr拥有它所指向的资源的所有权,并永远不会放弃这个所有权;3.shared_ptr 是可以共享所有权的智能指针。1.auto_ptr 被...
解决:调MFC dll时发生AfxGetInstanceHandle()断言错误 - C/C++ - 清泛网 -...
...= NULL);崩溃
说明:这个函数使你能够获得当前应用程序的实例句柄。AfxGetInstanceHandle总是返回代表你的可执行文件(.EXE)的HINSTANCE值,除非它从与MFC的USRDLL版本连接的DLL内调用的。在这种情况下,它返回的是DLL的HINSTANCE值。
...
分享一款界面简单清爽的404页面 - 源码下载 - 清泛网 - 专注C/C++及内核技术
分享一款界面简单清爽的404页面404 源码效果图:更多界面美观的404页面下载请戳:http: www.tsingfun.com html 2016 code_0628 84.html效果图:
更多界面美观的404页面下载请戳:https://www.tsingfun.com/html/2016/code_0628/84.htmlWinXP,Win7,Win8,Win10,Linux...
解决:调MFC dll时发生AfxGetInstanceHandle()断言错误 - VC/MFC - 清泛IT...
...= NULL);崩溃
说明:这个函数使你能够获得当前应用程序的实例句柄。AfxGetInstanceHandle总是返回代表你的可执行文件(.EXE)的HINSTANCE值,除非它从与MFC的USRDLL版本连接的DLL内调用的。在这种情况下,它返回的是DLL的HINSTANCE值。
...
Best way to detect when a user leaves a web page?
...lientY < 0)) {
//window.localStorage.clear();
//alert("Y coords: " + window.event.clientY)
}
};
In my example, I am clearing local storage and alerting the user with the mouses y coords, only when the browser is closed, this will be ignored on all page loads from...
C/C++ 如何向上取整? - C/C++ - 清泛网 - 专注C/C++及内核技术
...or函数(整数直接除就ok)。
使用floor函数。floor(x)返回的是小于或等于x的最大整数。
如: floor(10.5) == 10 floor(-10.5) == -11
使用ceil函数。ceil(x)返回的是大于x的最小整数。
如: ceil(10.5) == 11 ceil(-10.5) ==-10
floor()是向...
How to get JSON from URL in JavaScript?
...leswithkeys&callback',
function(err, data) {
if (err !== null) {
alert('Something went wrong: ' + err);
} else {
alert('Your query count: ' + data.query.count);
}
});
Note that data is an object, so you can access its attributes without having to parse it.
...
Changing the interval of SetInterval while it's running
...our command at regular time intervals . In the following example, I run an alert every 2 seconds and the interval (intrv) can be changed dynamically...
var i=1;
var intrv=2; // << control this variable
var refreshId = setInterval(function() {
if(!(i%intrv)) {
alert('run!');
}
i++;
...
