jol | https

by openjdk Java Version: 0.17 License: GPL-2.0

X-Ray Key Features Code Snippets Community Discussions(8)Vulnerabilities Install Support

kandi X-RAY | jol Summary

jol is a Java library. jol has no bugs, it has no vulnerabilities, it has build file available, it has a Strong Copyleft License and it has low support. You can download it from GitHub, Maven.

JOL (Java Object Layout) is the tiny toolbox to analyze object layout in JVMs. These tools are using Unsafe, JVMTI, and Serviceability Agent (SA) heavily to decode the actual object layout, footprint, and references. This makes JOL much more accurate than other tools relying on heap dumps, specification assumptions, etc.

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Quality

Security

License

Reuse

Support

jol has a low active ecosystem.

It has 613 star(s) with 86 fork(s). There are 19 watchers for this library.

It had no major release in the last 6 months.

jol has no issues reported. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of jol is 0.17

Quality

jol has 0 bugs and 0 code smells.

Security

jol has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

jol code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

jol is licensed under the GPL-2.0 License. This license is Strong Copyleft.

Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

Reuse

jol releases are not available. You will need to build from source code and install.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

It has 7237 lines of code, 528 functions and 120 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed jol and discovered the below as its top functions. This is intended to give you an instant insight into jol implemented functionality, and help decide if they suit your requirements.

Entry point for testing
Converts the object graph into an image
Generates a GraphLayout for the given objects
Make sure the addresses are consistent
Dump the class data
Parse class data
Read digest
Parses the class
Prints the heap dump file names
Runs a single operation
Main entry point
Compares this object to another
Layout a class
Main method for testing
Shows the layout information
Display details about this VM
Example of how to use a blind lock
The main method
Show the reachability graph
Main method for debugging
Returns the class layout for the given class
Try to guess the smallest alignment
Main method
Returns the current process id
Demonstrates how to display the object graph changes
Test program

Get all kandi verified functions for this library.

jol Key Features

No Key Features are available at this moment for jol.

jol Examples and Code Snippets

No Code Snippets are available at this moment for jol.

Community Discussions

Trending Discussions on jol

Select only matching results from 3 separate tables in mysql

JavaScript if/else statements are altering variables used as conditions in the same statements

Result not null in my code, if "sorIndex" is invalid

Trying to extract required field from JSON. (Python)

Swift - Trim and map the first letter from a Array

UseCompressedOops UseCompressedClassPointers in jdk-13 and jdk-15

Higher memory allocation rates for List of single-character String than multi-character String

where the Password and Username is stored in Apache Ignite?

QUESTION

Select only matching results from 3 separate tables in mysql

Asked 2022-Mar-24 at 18:52

I want to return the results where at least 1 code from each of the two tables exists.

I know that I can do:

...

ANSWER

Answered 2022-Mar-24 at 18:39

You can use a "case" statement to produce a 1 if the 2 columns are equal or 0 otherwise. Then take the sum.

Source https://stackoverflow.com/questions/71607513

QUESTION

JavaScript if/else statements are altering variables used as conditions in the same statements

Asked 2022-Jan-19 at 09:33

I have a Piece of code that's supposed to change the text displayed according to the current day of the week and the time of day.

For some reason the if/else statements I'm using to check variables are altering the day variable. The end value changes from day do day and removing sections of if else statements also change the result.

I plan on embedding this on a WordPress site using the HTML block

...

ANSWER

Answered 2022-Jan-19 at 09:33

This is happening because you are assigning the value in the if check. instead of assigning it using =, use == or === to check for equality

Source https://stackoverflow.com/questions/70768118

QUESTION

Result not null in my code, if "sorIndex" is invalid

Asked 2020-Nov-23 at 18:21

I would need some guidance from You, at the moment I have this challenge with this exercise:

The aim of this code would be, to split a String(szoveg) to rows and give back the result row(sorIndex) as a result, if sorIndex is in the range of the String Array(String szoveg is splitted into this array).

If the requested number of the row is not in the valid range(0-length of the array) it should give back a null value. The IDE for testing the excercise returns a mistake, which is the following(Hungarian + English):

"A getSor() metódus nem működik jól. Nem létező sorIndexet megadva null-t kell visszaadjon a metódus. A konstruktor paramétere:"

"The getSor() method is not working properly. Given a not valid sorIndex, the method should return null. The parameter of the constructor:" -there is nothing after this part in the IDE.

...

ANSWER

Answered 2020-Nov-23 at 18:21

The error message tells you that if an invalid sorIndex is passed, then a null should be returned. This means that instead of getting into the else branch in your logic, it goes into the if in an invalid manner.

The reason of this is that arrays are 0-indexed, so you should compare against rows (sorok) in a srict manner:

Source https://stackoverflow.com/questions/64973773

QUESTION

Trying to extract required field from JSON. (Python)

Asked 2020-Sep-10 at 02:33

I'm stuck. The goal is to use the API to get the list of usernames. Specifically, the list of usernames of users with submission count strictly greater than the given threshold.The list of usernames must be returned in the order the users appear in the results.

This is my JSON:

...

ANSWER

Answered 2020-Sep-10 at 02:32

there's a small inefficiency - the first request you do is basically thrown away ater you check total_pages. To iterate through data you don't need range(), use for loop which makes it easier:

Source https://stackoverflow.com/questions/63821926

QUESTION

Swift - Trim and map the first letter from a Array

Asked 2020-Aug-29 at 09:30

I have a List with >2500 client namens and want to create an alphabetical index of the lastNames ( first letter of the lastname ). When there are white spaces in front of the LastName ( Legacy dataissue, I know, should later get fixed ), they should be removed. If there is no LastName available then it should come up as the last item in the indexArrayro.

result should be indexArray == ["A","G","I","M","S","Z",""] in uppercase.

This is what I got so far.

...

ANSWER

Answered 2020-Aug-29 at 08:29

Is this what are you looking for?

Source https://stackoverflow.com/questions/63644872

QUESTION

UseCompressedOops UseCompressedClassPointers in jdk-13 and jdk-15

Asked 2020-Jul-13 at 15:29

Accidentally I have stumbled into a change in jdk-15 that I was not aware of. Suppose I have a very simple question: what is the size of an array of 3 intergers? For this, I use JOL. The code is fairly trivial:

...

ANSWER

Answered 2020-Jul-13 at 15:29

In both jdk-13 and jdk-15, both of these options are on by default:

Source https://stackoverflow.com/questions/62879157

QUESTION

Higher memory allocation rates for List of single-character String than multi-character String

Asked 2020-Jul-05 at 13:12

Consider the following benchmark which allocates List of String of length 1 versus of length 8

...

ANSWER

Answered 2020-Jul-05 at 11:58

Allocation rate is how fast you can allocate memory (amount of memory allocated per unit of time). It doesn't tell us anything about total memory allocated.

It is always easier to find smaller continuous memory region that larger contiguous memory region, so e.g. allocating e.g. 1000 Strings of length 1 should take impropotionaly less time than allocating e.g. 1000 String of length 8, resulting in higher allocation rate with less total memory consumption.

Source https://stackoverflow.com/questions/62739805

QUESTION

where the Password and Username is stored in Apache Ignite?

Asked 2020-Mar-06 at 09:20

I am able to connect the java thin client to server by the following code,

...

ANSWER

Answered 2020-Mar-06 at 08:25

Users and passwords are not stored in a table, Ignite uses internal data structure for that.

There is no way to retrieve existing users. You can alter known users with DDL: https://apacheignite.readme.io/docs/advanced-security

Source https://stackoverflow.com/questions/60558565

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install jol

You can download it from GitHub, Maven.
You can use jol like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the jol component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

You may find unresolved bugs and feature request in JDK Bug System Please submit the new bug there:. If you don't have the access to JDK Bug System, submit the bug report at Issues here, and wait for maintainers to pick that up.

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