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How to calculate the CPU usage of a process by PID in Linux from C?
... want to programmatically [in C] calculate CPU usage % for a given process ID in Linux.
12 Answers
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Best way to do multiple constructors in PHP
...t() {
// allocate your stuff
}
public static function withID( $id ) {
$instance = new self();
$instance->loadByID( $id );
return $instance;
}
public static function withRow( array $row ) {
$instance = new self();
$instance->fill...
Web workers without a separate Javascript file?
...
Full example of BLOB inline worker:
<!DOCTYPE html>
<script id="worker1" type="javascript/worker">
// This script won't be parsed by JS engines because its type is javascript/worker.
self.onmessage = function(e) {
self.postMessage('msg from worker');
};
// Rest of your ...
Using Selenium Web Driver to retrieve value of a HTML input
...he displayed text is not wrapped by the <input> tag, instead it's inside the value attribute.
Note: Case matters. If you specify "Value", you'll get a 'null' value back. This is true for C# at least.
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How to set SQL Server connection string?
...
.NET DataProvider -- Standard Connection with username and password
using System.Data.SqlClient;
SqlConnection conn = new SqlConnection();
conn.ConnectionString =
"Data Source=ServerName;" +
"Initial Catalog=DataBaseName;" +
"User...
How do I auto-submit an upload form when a file is selected?
...mit method in the onchange event of your file input.
document.getElementById("file").onchange = function() {
document.getElementById("form").submit();
};
http://jsfiddle.net/cwvc4/73/
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drag drop files into standard html file input
...vent to register.
// See: https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Drag_operations#droptargets
dropContainer.ondragover = dropContainer.ondragenter = function(evt) {
evt.preventDefault();
};
dropContainer.ondrop = function(evt) {
// pretty simple -- but not for IE :(
f...
How can I tell when a MySQL table was last updated?
...e is an unreliable indicator of modification time.
– idoimaging
Sep 25 '12 at 21:49
5
Again, does...
How do I migrate a model out of one django app and into a new one?
...
Really great guide @Potr. I'm curious, shouldn't there be a orm['contenttypes.contenttype'].objects.filter line in the backwards part of 0003_create_cat as well? Also I want to share a tip. If you have indexes, they will need t...
How to delete a file from SD card?
...delete all inner childs.See my answer below..
– AndroidGeek
May 15 '14 at 7:56
2
Unfortunately th...