GC | A lightweight conservative garbage collector for C/C | Script Programming library

 by   GJDuck C Version: Current License: Non-SPDX

kandi X-RAY | GC Summary

kandi X-RAY | GC Summary

GC is a C library typically used in Programming Style, Script Programming applications. GC has no bugs, it has no vulnerabilities and it has low support. However GC has a Non-SPDX License. You can download it from GitHub.

This GC was designed and implemented by Gregory J. Duck. The official website is here:.
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            kandi-support Support

              GC has a low active ecosystem.
              It has 96 star(s) with 16 fork(s). There are 8 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 1 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of GC is current.

            kandi-Quality Quality

              GC has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              GC has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

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

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of GC
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            GC Key Features

            No Key Features are available at this moment for GC.

            GC Examples and Code Snippets

            No Code Snippets are available at this moment for GC.

            Community Discussions

            QUESTION

            How to check whether an app in Docker container ignores Java memory options?
            Asked 2021-Jun-14 at 11:21

            There is a Java 11 (SpringBoot 2.5.1) application with simple workflow:

            1. Upload archives (as multipart files with size 50-100 Mb each)
            2. Unpack them in memory
            3. Send each unpacked file as a message to a queue via JMS

            When I run the app locally java -jar app.jar its memory usage (in VisualVM) looks like a saw: high peaks (~ 400 Mb) over a stable baseline (~ 100 Mb).

            When I run the same app in a Docker container memory consumption grows up to 700 Mb and higher until an OutOfMemoryError. It appears that GC does not work at all. Even when memory options are present (java -Xms400m -Xmx400m -jar app.jar) the container seems to completely ignore them still consuming much more memory.

            So the behavior in the container and in OS are dramatically different. I tried this Docker image in DockerDesktop Windows 10 and in OpenShift 4.6 and got two similar pictures for the memory usage.

            Dockerfile

            ...

            ANSWER

            Answered 2021-Jun-13 at 03:31

            In Java 11, you can find out the flags that have been passed to the JVM and the "ergonomic" ones that have been set by the JVM by adding -XX:+PrintCommandLineFlags to the JVM options.

            That should tell you if the container you are using is overriding the flags you have given.

            Having said that, its is (IMO) unlikely that the container is what is overriding the parameters.

            It is not unusual for a JVM to use more memory that the -Xmx option says. The explanation is that that option only controls the size of the Java heap. A JVM consumes a lot of memory that is not part of the Java heap; e.g. the executable and native libraries, the native heap, metaspace, off-heap memory allocations, stack frames, mapped files, and so on. Depending on your application, this could easily exceed 300MB.

            Secondly, OOMEs are not necessarily caused by running out of heap space. Check what the "reason" string says.

            Finally, this could be a difference in your app's memory utilization in a containerized environment versus when you run it locally.

            Source https://stackoverflow.com/questions/67953508

            QUESTION

            'loose object file': bad file descriptor while doing git pull
            Asked 2021-Jun-14 at 07:20

            I am using BitBucket. I am trying to pull master branch,using git pull origin master but I am getting errors:

            I see this was asked as similar issue on SO, so I tried following methods, but it didnt worked.

            ...

            ANSWER

            Answered 2021-Jun-14 at 07:20

            As per comments, you can run:

            Source https://stackoverflow.com/questions/67820763

            QUESTION

            Does each `yield` of a synchronous generator unavoidably allocate a fresh `{value, done}` object?
            Asked 2021-Jun-13 at 03:59

            MDN says:

            The yield keyword causes the call to the generator's next() method to return an IteratorResult object with two properties: value and done. The value property is the result of evaluating the yield expression, and done is false, indicating that the generator function has not fully completed.

            I ran a test in Chrome 91.0.4472.77 and it appears to be a fresh object every single time. Which seems very wasteful if the processing is fine grained (high numbers of iterations, each with low computation). To avoid unpredictable throughput and GC jank, this is undesirable.

            To avoid this, I can define an iterator function, where I can control (ensure) the reuse of the {value, done} object by each next() causing the property values to be modified in place, ie. there's no memory allocation for a new {value, done} object.

            Am I missing something, or do generators have this inherent garbage producing nature? Which browsers are smart enough to not allocate a new {value, done} object if all I do is const {value, done} = generatorObject.next(); ie. I can't possibly gain a handle on the object, ie. no reason for the engine to allocate a fresh object?

            ...

            ANSWER

            Answered 2021-Jun-13 at 03:59

            It is a requirement of the ECMAScript specification for generators to allocate a new object for each yield, so all compliant JS engines have to do it.

            It is possible in theory for a JS engine to reuse a generator's result object if it can prove that the program's observable behavior would not change as a result of this optimization, such as when the only use of the generator is in a const {value, done} = generatorObject.next() statement. However, I am not aware of any engines (at least those that are used in popular web browsers) that do this. Optimizations like this are a very hard problem in JavaScript because of its dynamic nature.

            Source https://stackoverflow.com/questions/67953984

            QUESTION

            -Xms option seems to ignored on gke but -Xmx is working
            Asked 2021-Jun-12 at 21:42

            I'm running java application(ksqldb 0.15.0) on GKE cluster, and passed the java opts -Xms3G and -Xmx5G.

            -Xmx option is working well, but -Xms options seems not to be effected.

            The running command is as follows;

            ...

            ANSWER

            Answered 2021-Mar-30 at 23:38

            -Xms sets the initial heap size, not the minimum size.

            NGCMN and OGCMN denote the minimum capacity of the new generation and the old generation respectively. These numbers are useless most of the time. What you probably wanted to look at is NGC/OGC - the current capacity of the new generation and the old generation.

            You've set -Xms3G, and the current heap size is exactly

            Source https://stackoverflow.com/questions/66867956

            QUESTION

            No visible @interface for ***** declares *****
            Asked 2021-Jun-12 at 18:25

            I am new to Objective-c. I am using swiftui to make my app. But need to implant objective-c code for BLE. all work until I get this code

            in .h file

            ...

            ANSWER

            Answered 2021-Jun-11 at 22:36

            Search your code for where the @interface for ESPTaskParameter is defined, that will be in some .h file. Then, make sure the .m file #imports that header file. If it doesn’t the there would indeed be no visible interface defining the selector you want to call to the .m file that is trying to call it

            And check that the interface .h does indeed declare a public setter for broadcast.

            Source https://stackoverflow.com/questions/67942671

            QUESTION

            Applying particles package in R to ocean velocity
            Asked 2021-Jun-12 at 16:03

            I am trying to apply an example from R "particles" package to ocean velocity data (kinetic energy). Example data is as follows:

            ...

            ANSWER

            Answered 2021-Jun-12 at 14:45

            The problem is that kee is a vector and not a matrix. So ncol and nrow return as NULL instead of an actual number. Here is a smaller reproducible example of why it is failing:

            Source https://stackoverflow.com/questions/67949397

            QUESTION

            How to compile C programs such that binaries differ only in different return value?
            Asked 2021-Jun-12 at 13:01

            If you compile two C programs that differ only in the return value, I'd expect the binary to differ only in the bits of this value. However, if I compile the following programs using GCC, dump the bits of the binary (using xxd) and diff the dumps, I get another difference.

            Files return127.c ...

            ANSWER

            Answered 2021-Jun-12 at 13:01

            What is the difference at the top?

            It's build id difference. Install diffoscope (or compare readelf --wide --notes output from both libraries) and you'll nicely see:

            Source https://stackoverflow.com/questions/67948502

            QUESTION

            How to change powershell script output behavior
            Asked 2021-Jun-12 at 12:59

            I am not a scripter, please if anyone can help me with modify below script by removing UCPID value but keep only servername

            Currently below script looking two columns from csv file, now I want to change the behavior to only look for ServerName because now CSV file have only one column which containing server only in each row and update related XML.

            ...

            ANSWER

            Answered 2021-Jun-12 at 12:59

            If your XML looks like this:

            Source https://stackoverflow.com/questions/67924650

            QUESTION

            Knative & cert-manager - SSL_ERROR_SYSCALL
            Asked 2021-Jun-12 at 02:54
            kubectl version
            Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.0", GitCommit:"cb303e613a121a29364f75cc67d3d580833a7479", GitTreeState:"clean", BuildDate:"2021-04-08T21:16:14Z", GoVersion:"go1.16.3", Compiler:"gc", Platform:"darwin/amd64"}
            Server Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.1", GitCommit:"5e58841cce77d4bc13713ad2b91fa0d961e69192", GitTreeState:"clean", BuildDate:"2021-05-12T14:12:29Z", GoVersion:"go1.16.4", Compiler:"gc", Platform:"linux/amd64"}
            
            ...

            ANSWER

            Answered 2021-Jun-12 at 02:54

            I notice that you're connecting to https://mydomain.dev, but passing a host header for a different domain. My guess would be that curl is sending an SNI request for a mydomain.dev cert; since networking-ns-cert will acquire wildcard certs for *..my domain.dev, it's possible that the server doesn't have a cert matching the SNI request, and closes the TCP connection.

            Try using the -kvv options to curl (instead of -v) to print more verbose debugging information and bypass some SSL errors. Since you have DNS and certs set up, I'd try:

            curl -kvv https://helloworld-go.default.mydomain.dev

            Source https://stackoverflow.com/questions/67652812

            QUESTION

            How to avoid db.update fails if you choose a name that already exists in the table?
            Asked 2021-Jun-11 at 22:09

            The app has:

            • ListView listing player names from a DB table (only one column, so it is primary key)
            • EditText to write the new name
            • Button to update the name of player in the list

            *there are more things, but i don´t want to make it more messy

            I can click a name from the list and write a new name in the EditText. When you press the button that name is updated in the list.

            Everything works correctly, but there is a problem. When I write a name that it is already in the list the app fails because primary keys cannot be repeated.

            Is there some way to say "if EditText text already exists in the DB... then show a toast"

            I already tried "if result of db.update is -1...then show a toast", but it doesn´t work.

            This is the method in MainActivity:

            ...

            ANSWER

            Answered 2021-Jun-11 at 22:09

            Issues

            You have a UNIQUE index on the NUM_JUG column (perhaps implicit if NON_JUG is defined with PRIMARY KEY) and you are using the standard update method which uses the default conflict action of ABORT and therefore fails if an attempt is made to duplicate a NOM_JUG value.

            As secondary issue is that the SQLiteDatabase update method returns the number of updates (see extract and link below) (same for updateWithOnConflict). The number returned will never be -1 it will be 0 or more (0 indicating that no updates have been applied).

            As per SQLite Database - Update

            Returns

            int the number of rows affected

            Fix

            To fix the main issue you should use the updateWithOnConflict method. This takes a 4th parameter a conflict and you probably want IGNORE so you could use :-

            Source https://stackoverflow.com/questions/67940802

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

            Vulnerabilities

            No vulnerabilities reported

            Install GC

            You can download it from GitHub.

            Support

            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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