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How to calculate the CPU usage of a process by PID in Linux from C?
...ing the usage of current process or its child
Update:
I can't remember an API. But all details will be in /proc/PID/stat, so if we could parse it, we can get the percentage.
EDIT:
Since CPU % is not straight forward to calculate, You could use sampling kind of stuff here. Read ctime and utime for ...
How to build an android library with Android Studio and gradle?
...roject without installing it.
build.gradle
task wrapper(type: org.gradle.api.tasks.wrapper.Wrapper) {
gradleVersion = '1.4'
}
So now we have one project to build. Now we are going to add the others. I put them in a directory, maybe call it deps, or subProjects. It doesn't really matter, but ...
Get context of test project in Android junit test case
...
Update: AndroidTestCase This class was deprecated in API level 24.
Use InstrumentationRegistry instead. New tests should be written using the Android Testing Support Library. Link to announcement
You should extend from AndroidTestCase instead of TestCase.
AndroidTestCase Cla...
How do I set up a basic Ruby project?
...y for your gem, then push it up
~/code/my_lib $ curl -u myusername https://api.github.com/user/repos -d '{"name":"my_lib"}'
~/code/my_lib $ git remote add origin git@github.com:myusername/my_lib.git
~/code/my_lib $ git push
Then, when you're ready to release your gem on Rubygems.org, run rake rel...
Enable access control on simple HTTP server
... to the world what runs locally on your computer (including local backends/apis)
localtunnel: almost the same as ngrok
now: when running now, it uploads your static assets online and deploy them to https://$random.now.sh. They remain online forever unless you decide otherwise. Deployment is fast (ex...
How to detect incoming calls, in an Android device?
...
With Android P - Api Level 28:
You need to get READ_CALL_LOG permission
Restricted access to call logs
Android P moves the CALL_LOG, READ_CALL_LOG, WRITE_CALL_LOG, and PROCESS_OUTGOING_CALLS permissions from the PHONE permission group to th...
How to check if a json key exists?
...ontains a specific key.
Example
JSONObject JsonObj = new JSONObject(Your_API_STRING); //JSONObject is an unordered collection of name/value pairs
if (JsonObj.has("address")) {
//Checking address Key Present or not
String get_address = JsonObj .getString("address"); // Present Key
}
else ...
Null or default comparison of generic argument in C#
...uld depend on whether it implements IEquatable<Person> on the public API, or via explicit implementation - i.e. can the compiler see a public Equals(Person other) method. However; in generics, the same IL is used for all T; a T1 that happens to implement IEquatable<T1> needs to be treate...
How to define multiple CSS attributes in jQuery?
...redsquare Please consider adding the following to your answer. From jQuery API: For example, jQuery understands and returns the correct value for both .css({ "background-color": "#ffe", "border-left": "5px solid #ccc" }) and .css({backgroundColor: "#ffe", borderLeft: "5px solid #ccc" }). Notice that...
What is the difference between a symbolic link and a hard link?
...n get the open and unlink to happen atomically, which there may be a POSIX API for that I'm not remembering, then you really have a safe temporary file) where you can read/write your data without anyone being able to access it. Well, that was true before /proc gave everyone the ability to look at y...