jmc | OpenJDK Mission Control , a production time | Continuous Deployment library

 by   openjdk Java Version: 8.3.0-ga License: No License

kandi X-RAY | jmc Summary

kandi X-RAY | jmc Summary

jmc is a Java library typically used in Devops, Continuous Deployment, Docker applications. jmc has build file available and it has high support. However jmc has 780 bugs and it has 6 vulnerabilities. You can download it from GitHub, Maven.

Mission Control is an open source project of the OpenJDK. The Mission Control project originated from the JRockit JVM project.

            kandi-support Support

              jmc has a highly active ecosystem.
              It has 676 star(s) with 155 fork(s). There are 35 watchers for this library.
              It had no major release in the last 6 months.
              jmc has no issues reported. There are 11 open pull requests and 0 closed requests.
              It has a negative sentiment in the developer community.
              The latest version of jmc is 8.3.0-ga

            kandi-Quality Quality

              jmc has 780 bugs (13 blocker, 11 critical, 513 major, 243 minor) and 14228 code smells.

            kandi-Security Security

              jmc has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              jmc code analysis shows 6 unresolved vulnerabilities (6 blocker, 0 critical, 0 major, 0 minor).
              There are 122 security hotspots that need review.

            kandi-License License

              jmc does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              jmc 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, examples and code snippets are available.
              jmc saves you 231034 person hours of effort in developing the same functionality from scratch.
              It has 228073 lines of code, 19133 functions and 2541 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed jmc and discovered the below as its top functions. This is intended to give you an instant insight into jmc implemented functionality, and help decide if they suit your requirements.
            • Print detailed information about the class and object consumption .
            • Translates a Java type ID to JdkTypeIDs .
            • Reads the Hprof file .
            • Create the window visitor .
            • Create item factory .
            • Process a single collection .
            • Parses the field values from a byte array .
            • Initialize the default variables .
            • Gets the max freed window .
            • Gets the last reference chain element .
            Get all kandi verified functions for this library.

            jmc Key Features

            No Key Features are available at this moment for jmc.

            jmc Examples and Code Snippets

            Get all the rows which have mismatch between values in columns in pyspark dataframe
            Lines of Code : 28dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            df=spark.createDataFrame([(1,   'Apples',   'Oranges'),
            (2, 'Apples',   'APPLE FRUIT'),
            (3, 'Grapes',   'Grape'),
            (4, 'Bananas',  'Oranges'),
            (5, 'Orange',   'Grape')],
            ('SL No',   'category1 ',   'category 2'))
               new =(
            How to do I associate two different objects with each other
            Javadot img2Lines of Code : 52dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            public class Dose {
                private Citizen citizen;
                public void setCitizen(Citizen citizen) {
                    this.citizen = citizen;
                public Citizen getCitizen() {
                    return citizen;
            public class Citizen {
                private Li
            Using generics with custom object in method parameters
            Javadot img3Lines of Code : 24dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            interface Item {
                // TODO: declare methods common for all items
            class ItemA implements Item {
                // TODO: implement the interface
            class ItemB implements Item {
                // TODO: implement the interface
            copy iconCopy
            get_common(_, [], []).
            get_common(K, [[K,Y]|Points], [[K,Y]|Rest]) :- 
                get_common(K, Points, Rest).
            get_common(K, [[X,_]|Points], Rest) :- 
                get_common(K, Points, Rest).
            ?- get_common(2, [[2
            Visual Studio Code extension - mouse middle click go to definition
            Lines of Code : 14dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            #NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
            ; #Warn  ; Enable warnings to assist with detecting common errors.
            SendMode Input  ; Recommended for new scripts due to its superior speed and reliabi
            MongoDB update array if condition matches
            Lines of Code : 31dot img6License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            var candidate = 2;
  {}, // add matching criteria here; for now, match ALL                                
                         // We cannot say "if condition then set fld = X else do nothing".    
            copy iconCopy
            $ ros install muyinliu/jsown-utils # installs from github directly
            $ ros install dexador              # installs from quicklisp repo
            (ql:quickload 'jsown-utils)
            (ql:quickload 'dexador)
            OpenSSL pkcs12 Export chained CA Certs separately
            Lines of Code : 38dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            # Generate the client cert
            &"$opensslPath\openssl.exe" pkcs12 -in "$($filepathforCert).pfx" -clcerts -nokeys -out "$($filepathforCert)-fullchain.crt" -password pass:$certPassword
            # Generate the CA certs in the chain
            copy iconCopy
            buildscript {
                dependencies {
                    classpath ''
            // Top-level build file where you can add configuration options common to all sub-projects/modules.
            plugins {
                id '
            Android Studio : Dependencies coming from github
            Lines of Code : 27dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            // Top-level build file where you can add configuration options common to all sub-projects/modules.
            buildscript {
                repositories {
                dependencies {
                    classpath 'com.

            Community Discussions


            Dump part of Java Flight Record
            Asked 2021-May-29 at 07:27

            Suppose I have configured a continuous flight record for my JVM using the following flags



            Answered 2021-May-29 at 07:27

            Unfortunately, the link you have ranks high in search engines, but it is six years old. You can find the latest documentation here (JDK 16), which is very much the same as JDK 11.

            It's not possible to dump part of a memory-based recording. In your example, you have to remove 'disk=false' and -XX:FlightRecorderOptions, and add 'maxsize=200M' to -XX:StartFlightRecording:



            Lean define groups
            Asked 2021-Apr-16 at 12:09

            This is a follow-up question of Lean pass type as parameter

            I tried jmc's suggestion, which seemed to work, but then I got stuck at another point. The original purpose of the question was to define the categories of groups and rings, but now apparently I am unable to define group morphisms:



            Answered 2021-Apr-16 at 12:01

            You are redefining the + notation which will very quickly lead to headaches. Have a polymorphic + notation is very helpful. (How will you denote the addition in a ring?)

            Further points:

            • you should use structure instead of class
            • mathematically, you are defining monoids and monoid homs, not groups and group homs

            This works though



            Does it exist a Weblogic plug-in for Java Mission Control 7.1.2?
            Asked 2021-Mar-03 at 04:29

            The previous version of JDK Mission Control 5.5.2 bundled with Oracle JDK 7 had the possibility to add a WebLogic plug-in, which allows viewing the SQL queries, servlets between other components as seen in this image.

            Then the new JDK Mission Control 7.1.2+b04 doesn't seem to have a similar plug-in or at least it's more complicated to apply it.

            When trying to investigate, the JMC is pointing to stating that the plugin must be installed via Eclipse 4.8 or later, so the latest Eclipse is 2012-12 was installed, and then the plugin with as well, as seen in this image:

            The Eclipse IDE was restarted and now it got a new icon in the menu bar:

            which connects (or at least it tries to connect) with the Java processes running in this local station:

            but that's not the WebLogic plug-in I expected, similar to the one available in the previous version of JMC.

            Does it exist a WebLogic plug-in in JMC7.1.2 similar to the existing in JMC5.5.2?



            Answered 2021-Mar-03 at 04:29

            To install WebLogic plug-in for JMC, go to Help menu and select Install New Software menu item. Expand "Mission Control (Oracle)" and then "Flight Recorder" and you will find "WebLogic Pages" plug-in. Follow the instructions on screen to complete installation of plug-in.

            This is described in the Oracle JMC 7 User Guide under Install JMC Standalone Application in the "Install Plug-ins for JMC Standalone Application" sub-section.



            Compiling Kevlin Henney's Fizzbuzz with the use of lambdas in C++17 using Visual Studio 2017's compiler
            Asked 2021-Jan-26 at 05:26

            I was following Kevlin Henney's Youtube video on Lambdas in programming. At about 20:30 - 20:40 in his video he gives this code snippet:



            Answered 2021-Jan-26 at 05:16

            It appears that MSVC has an issue with handling the deduction of ternary statements when in the presence of the /permissive- flag. The /permissive- flag should be forcing MSVC to compile with strict standards conformance, however ironically this appears to be breaking what should be valid code.

            This can be reproduced on Compiler Explorer easily: Live Example. This appears to be fixed in newer MSVC versions with v19.25 onward Live Example

            Unfortunately there are few ways to fix this since it's a compiler bug. You're limited to:

            • Updating your compiler,
            • Removing /permissive-, or
            • Not using ternary statements that return different types (e.g. use if/else with different returns instead)



            Splitting string arrays with delimiter
            Asked 2020-Oct-30 at 07:28

            I'm using the following code to split a char array:



            Answered 2020-Oct-29 at 20:16

            OK I got it by making the array independent from change by strtok:



            Array constructor optimization - boxing of Double
            Asked 2020-Oct-22 at 15:34

            When profiling my application, I can see boxing of Double values done in the Array[Double] constructor, like this (copied from JMC / JFR):



            Answered 2020-Oct-22 at 15:34

            It seems the optimization is quite fragile. Changing the types and literals involved causes the optimization to be done (or not).

            var el = Array[Double](1)

            var el = Array[Double](1.0)

            Both produce the ugly code:



            What does the * mean following a filename in Mac terminal
            Asked 2020-Sep-28 at 01:35

            Does anyone know what the * following a filename in macOS terminal means?

            All the file names in the folder:


            have a * trailing them and I'm not sure why.

            For example:



            Answered 2020-Sep-28 at 01:30

            As for the executable-looking emulator that you can't actually execute, this can happen when the dynamic loader requested by emulator doesn't exist. You can check what kind of file emulator is with the command file emulator, and check what dynamic loader and libraries it needs with ldd emulator (any line showing “not found” is something you need to install). Given the name of the directory and the size of the file, emulator is probably a Linux x86 binary. I suspect you have an amd64 system. If so, you need to install a runtime environment for 32-bit applications; on Ubuntu, you need the ia32-libs package (and perhaps also ia32-libs-gtk). You could also get this error message for a script whose interpreter as indicated in the #! line doesn't exist.


            same question here.



            Is Java Mission Control included with a JDK?
            Asked 2020-Sep-16 at 15:42

            Are JMC binaries included in open JDK ? We have openjdk- in our Linux platform , but we do not have JMC ?

            Can we install JMC as separate application that runs on JVM already installed ? Can we use JMC in production environments ? If yes, please let me know the path to install JMC for open JDK



            Answered 2020-Sep-16 at 15:42
            About Mission Control

            Java Mission Control was previously a proprietary commercial offering from Oracle. Oracle then open-sourced it as a subproject on the OpenJDK project.

            See that subproject page, Mission Control, and this wiki page. Notice the “Java” trademarked word has been dropped from the name.

            As of 2020-06, the current version of the Mission Control project is 7.1.1. A version 8 is available for preview.

            Ditto for Oracle’s Flight Recorder product, now open-sourced within the OpenJDK project. See JEP 328: Flight Recorder. Flight Recorder is currently being bundled with the JDK in my expertience, while Mission Control is a separate download.

            Java 11

            In Java 11, the current LTS version, you will need to download and install the binary of Mission Control.

            You can download a binary installer from various vendors.

            The vendors I know of include:

            Mission Control requires a JDK to run. Here is a flowchart I made to guide you in choosing a vendor for a JDK implementation.

            Java 8

            Be aware that Oracle changed its licensing on its product Oracle JDK. That product now requires a fee for use in production. As I recall, even before that change, Oracle required a fee for use of its Java Mission Control product in production.

            Now Oracle has generously transferred the product to the OpenJDK project. Since open-sourcing under the OpenJDK project, other vendors are free to back-port Mission Control to Java 8 per the new licensing terms.

            I know of at least one such vendor:

            • Azul Systems
              • See their product Zulu® Mission Control. This product is included with both their free-of-cost Zulu Community product and their commercial Zulu Enterprise product.



            C# using Google Classroom API Read List of Students
            Asked 2020-Aug-30 at 22:31

            I am trying to write a console app for our elementary school which will read courses, students, coursework (etc) from Google Classrooms and write it to our SQL Server database. This is the first time I have ever used an API and I have very little experience with C# - but school starts in two days, so I'm using Google searches to figure out how to do it.

            I pasted my code below that successfully reads the courses from Google Classroom and writes them to our SQL Server. I thought I could use the same logic for the rest of the tables (students, Coursework, etc). However, when I tried to add students, there is a problem with this line (list is underlined in red):



            Answered 2020-Aug-30 at 22:31

            Looking further at the signature, Students.List requires a course ID as a parameter, which is currently not provided. On top of this, the return type for Students.List is CoursesResource.StudentsResource.ListRequest. To fix, replace the line with:



            I installed Oracle JDK 14 but did not find jmc (Java Mission Control)
            Asked 2020-Aug-27 at 07:28

            I installed Oracle JDK 14 but did not find jmc (Java Mission Control) in $JAVA_HOME/bin folder

            Where is jmc in Oracle JDK 14?



            Answered 2020-Aug-27 at 07:28

            Starting with JDK 11, JDK Mission Control is provided as a separate download.


            I think you can download it from



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


            No vulnerabilities reported

            Install jmc

            Please follow the Developer Guide.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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