weak-lock-free | concurrent map with weak keys | Map library
kandi X-RAY | weak-lock-free Summary
kandi X-RAY | weak-lock-free Summary
This is a miniature implementation of a concurrent, lock-free (as in lock-less) hash map with weak keys where keys respect reference equality. Such a hash map removes entries containing collected keys by either:. As a wrapper around this WeakConcurrentMap, this package also contains a DetachedThreadLocal which describes a weak concurrent map where the current thread serves as a key of the map. Also, this package delivers a WeakConcurrentSet as a wrapper around a weak concurrent map. This map does not implement the java.util.Map interface to simplify the implementation. Writes to the map might cause blocking if many threads write to the map concurrently (this is implied by the maps backing by a ConcurrentHashMap and a ReferenceQueue), the performance of the map is however significantly better than using a synchronized wrapper around a weak hash map.
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Top functions reviewed by kandi - BETA
- Pushes the current value to the specified thread
- Returns the value associated with the given key
- Creates a default value for the given key
- Returns the specified value
- Returns the approximate size of this set
- Returns the approximate size of this map
- Returns an iterator that iterates over the elements in this sequence
- Iterator implementation
- Fetches the current value from the specified thread
- Set value for current thread
- Runs the map
- Adds the specified value to the set
- Resets the lookupKey
- Returns the current value if present
- Associates the value with the given key
- Define a thread - local value
- Clears this set
- Clears all thread local references
- Returns true if the specified value is contained in the set
- Expunge expired entries
- Returns a lookup key for the given key
- Returns the active cleaner thread
- Removes the specified value from this set
- Run the task
- Returns the value associated with the given key if it already exists
- Checks if a class loader can be loaded
weak-lock-free Key Features
weak-lock-free Examples and Code Snippets
Community Discussions
Trending Discussions on Map
QUESTION
I have been using github actions for quite sometime but today my deployments started failing. Below is the error from github action logs
...ANSWER
Answered 2022-Mar-16 at 07:01First, this error message is indeed expected on Jan. 11th, 2022.
See "Improving Git protocol security on GitHub".
January 11, 2022 Final brownout.
This is the full brownout period where we’ll temporarily stop accepting the deprecated key and signature types, ciphers, and MACs, and the unencrypted Git protocol.
This will help clients discover any lingering use of older keys or old URLs.
Second, check your package.json dependencies for any git:// URL, as in this example, fixed in this PR.
As noted by Jörg W Mittag:
For GitHub Actions:There was a 4-month warning.
The entire Internet has been moving away from unauthenticated, unencrypted protocols for a decade, it's not like this is a huge surprise.Personally, I consider it less an "issue" and more "detecting unmaintained dependencies".
Plus, this is still only the brownout period, so the protocol will only be disabled for a short period of time, allowing developers to discover the problem.
The permanent shutdown is not until March 15th.
As in actions/checkout issue 14, you can add as a first step:
QUESTION
In the current stable Rust, is there a way to write a function equivalent to BTreeMap::pop_last?
The best I could come up with is:
...ANSWER
Answered 2022-Mar-15 at 16:55Is there a way to work around this issue without imposing additional constraints on map key and value types?
It doesn't appear doable in safe Rust, at least not with reasonable algorithmic complexity. (See Aiden4's answer for a solution that does it by re-building the whole map.)
But if you're allowed to use unsafe, and if you're determined enough that you want to delve into it, this code could do it:
QUESTION
I've built my React Native app and tested and troubleshooted with my iOS devices for months. Now I'm trying to built and test the app on Android for the first time. The thing is, that I keep getting errors trying to run the Android-version of my app. After hours of debugging and troubleshooting, I tried to create a new RN project and see if that could run on my emulator and device. I got that part working and then I wanted to copy/paste the files of my existing app project into the new project.
I pasted my existing assets, styles, the source JS-files and the package.json file into the new project, ran npm install and then I ended up with the exact same error message as I had in the original project when I run react-native run-android.
The full error message is here:
...ANSWER
Answered 2021-Aug-21 at 13:43I've hit this same issue and have temporarily resolved it by uninstalling react-native-video (npm uninstall --save react-native-video). That's not a great answer as I need that component, but I don't have a full solution yet. I think somehow com.yqritc:android-scalablevideoview:1.0.4. is required by react-native-video but has gotten lost or removed. Other thoughts are welcome.
UPDATE: Resolved! In your build.gradle in your Android folder you need to add the repository "jcenter()" in allprojects (not in build dependencies) like this...
QUESTION
Apparently throwError(error) is now deprecated. The IntelliSense of VS Code suggests throwError(() => new Error('error'). new Error(...) accepts only strings. What's the correct way to replace it without breaking my HttpErrorHandlerService ?
ANSWER
Answered 2021-Aug-04 at 19:08Instead of this:
QUESTION
I have this error in my terminal:
TypeError: Cannot read properties of undefined (reading 'id')
I'm trying to test the call to an API, but the error appears.
My function:
...ANSWER
Answered 2021-Oct-17 at 15:15What is happening:
The function itemToForm() is being called before the this.item is ready.
There are many strategies to avoid this error. A very simple one is to add a catcher at the beginning of the function, like this:
QUESTION
I know that compiler is usually the last thing to blame for bugs in a code, but I do not see any other explanation for the following behaviour of the following C++ code (distilled down from an actual project):
...ANSWER
Answered 2022-Feb-01 at 15:49The evaluation order of A = B was not specified before c++17, after c++17 B is guaranteed to be evaluated before A, see https://en.cppreference.com/w/cpp/language/eval_order rule 20.
The behaviour of valMap[val] = valMap.size(); is therefore unspecified in c++14, you should use:
QUESTION
This is a React web app. When I run
...ANSWER
Answered 2021-Nov-13 at 18:36I am also stuck with the same problem because I installed the latest version of Node.js (v17.0.1).
Just go for node.js v14.18.1 and remove the latest version just use the stable version v14.18.1
QUESTION
So, I'm using Flutter and on running the App, I receive errors like these in the debug console:
...ANSWER
Answered 2021-Jul-31 at 19:43It not happen becuase of you have two build-tools version installed. It happens because of caches so on android studio just invalidating caches and restarting will fix this.
QUESTION
I got a large list of JSON objects that I want to parse depending on the start of one of the keys, and just wildcard the rest. A lot of the keys are similar, like "matchme-foo" and "matchme-bar". There is a builtin wildcard, but it is only used for whole values, kinda like an else.
I might be overlooking something but I can't find a solution anywhere in the proposal:
https://docs.python.org/3/whatsnew/3.10.html#pep-634-structural-pattern-matching
Also a bit more about it in PEP-636:
https://www.python.org/dev/peps/pep-0636/#going-to-the-cloud-mappings
My data looks like this:
...ANSWER
Answered 2021-Dec-17 at 10:43You can use a guard:
QUESTION
I am trying to run a project on the Xcode13, after running a pod cache clean --all, deleting the derived data, and running a pod update. When I clean the project and build it the following error appears:
...ANSWER
Answered 2021-Oct-05 at 16:33Edited: For people who use Cocoapods, this answer might be useful: https://stackoverflow.com/a/69384358/587609
I also faced this issue, and it seems that there is a known issue on Xcode 13 as mentioned in this document: https://developer.apple.com/documentation/Xcode-Release-Notes/xcode-13-release-notes
Swift libraries depending on Combine may fail to build for targets including armv7 and i386 architectures. (82183186, 82189214)
Workaround: Use an updated version of the library that isn’t impacted (if available) or remove armv7 and i386 support (for example, increase the deployment target of the library to iOS 11 or higher).
If your app is for iOS 11 or higher, one of the libraries should be modified to target iOS 11 or higher (e.g., my app is for iOS 12 or higher).
For example, I am using GRDB.swift, and its minimum iOS version is 10.0. There was a discussion as an issue of this repo, and I followed that comment to solve this issue as follows:
- Fork the repository
- Change Package.swift to modify the minimum iOS version like:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install weak-lock-free
You can use weak-lock-free 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 weak-lock-free 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 .
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