burst | То, чего нет в Бусте | 3D Printing library
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Lines of Code : 22License : Permissive (MIT License)
Copydef calculate_remaining_burst_time_of_processes(
self, queue: deque[Process]
) -> list[int]:
"""
This method calculate remaining burst time of processes
>>> P1 = Process("P1", 0, 53)
>>> Community Discussions
Trending Discussions on burst
QUESTION
We are Using OkHttp3 (v4.9.1) to establish h2c (HTTP/2 without TLS) connections in a highly concurrent fashion from a Spring Boot application. To do so, we have narrowed down the supported protocols using:
...ANSWER
Answered 2021-Jun-08 at 11:34With this issue you've made the case for us to fix it in OkHttp. https://github.com/square/okhttp/issues/6700
In the interim, you'll want an interceptor that uses a try/catch block, and attempts again in the catch clause if the exception matches this criteria.
QUESTION
I have an application published in Google play store, its name is PainterSVG, main purpose is to help SVG designers to create/edit SVG vector images.
One item in the app is designed as paid feature (use downloaded fonts), so user needs to pay with Google in-app-purchase to buy it. I designed all in-app-purchase codes and tested successfully.
One week ago, there was a sudden burst of purchases in a very short time, from the same user. The purchases' state all became Purchase.PurchaseState.PURCHASED. The raw data in jason and the signature are all verified with my application's public key.
But in Google play store, there are no information on these purchases, they simply does not exist, and of course I have no income.
Here is one example purchase I logged:
Raw data: {"orderId":"1788684269051654849.8163737331748355","packageName":"p.svg","productId":"paintersvg_point_100","purchaseTime":1622106599816,"purchaseState":0,"purchaseToken":"kslypocwqdttgxzhetcdskic.AO-J1OXwNhKHOWYKxGAGFZvXgslNtkhqCrpQBaxvFSzgcuE-ZLLKCev_hpKJTGlFEFCsXkWuJOXswCzOvadVljYnHiJkIygNoxawFQPaKePZppvbRZZUNToExOfEycRjxTsulwPClSAi"}
Signature: bVYGfzqbt6uWKnmw5xSW5tQek+tSwP0GgUKXz6fNXBCmGEedUrffpKPOXaG2RyfVtYvICThcxumD7kVWNSVxvE9DBJrVDjo+ipTPB9hkYebVQKib1LMBFbSMTpaA9Av2ioP+T/pBQt2EuvRLKUpnZaz5C/2uX7OvOcJtjwYniH/I7oRHvNRBxD6R78Tp6DNySotp41XUwDPmeebC6A38PVM5MhtaY9czWNaa3j3OG7rPAp0j2V5nWsdmmahu8HqBxTyqWdfmf83m3oaHrTvH7vATaKJPMcXdm1aavYAsyHCPzhFGeglU7/KRgUCkzyZ8edcA81F/x9hUVC2QL+cdXw==
The raw data and signature can be verified correct for my application, with my app's public key. Raw data and signature will be logged only when purchase state is PURCHASED. And all order ids are different.
I have no idea what is happening here -- where are the orders from and what was happening? Did the user actually paid? and paid a lot of times? Should I refund him? Can anyone help me?
Thanks a lot!
...ANSWER
Answered 2021-Jun-06 at 15:51What you're seeing are fraud attempts
I won't put links here, but on Android a malicious user can patch the Play Store application in order to bypass In-App Purchase. So when the user tries to buy something, a fake (but valid) receipt is returned to your app which thinks it's a valid one by default.
Fortunately, you don't trust the receipt as it is and you verify it by calling the Google APIs, which doesn't know the receipt.
Example of fraud attempt
Here is an example we've seen recently at Purchasely (we manage In-App Purchases for apps, so we see this kind of thing A LOT):
All these fraud attempts were made by the same user.
As you can see:
- they make different attempts in a short laps of time
- the receipt returned is generated randomly: the prices are incorrect. And worse, the monthly price sent ($1400) is greater than the yearly one ($500), which doesn't make any sense ^^'
Conclusion
Don't worry :)
QUESTION
I have a mobile app project which builds smooth and without any errors on Android. But when I try to build it to an iOS device, I get this error in Xcode:
...ANSWER
Answered 2021-May-26 at 17:17After almost a week of struggles and a lot of debugging I found the problem. In short, the crash was caused by the Unity.Entities 0.17.0-preview.41 package. (ref https://docs.unity3d.com/Packages/com.unity.entities@0.17/manual/index.html)
Even if an empty project is built on IL2CPP scripting backend + Development build is unchecked and the above mentioned Entities preview package is installed the app will crash and you will probably get the same error as me.
I don't know if it was a code stripping error after all but I found out a strange thing, if the Entities preview package is enabled it's first in the Script Execution Order (which you can check in the Project Settings) and maybe that caused the issue of a missing Internal function. (as the Entities package is dependent on the UnityEngine.Jobs.TransformAccess but as the Entities package executes first, it can't find the Jobs yet, that's my logic behind this, but please correct me if I'm wrong)
I'm still not sure why I had that package installed in the first place, as I didn't even use it in this project, so removing it solved all my issues and the project now runs smooth. Maybe this will help someone who has a similar issue in the future. All I can say as conclusion is:
- Be careful with preview packages.
- Don't use Unity.Entities preview package until they fix this issue.
QUESTION
Message : The gp2 burst balance credits for the RDS database instance are low. To resolve this issue, reduce IOPS usage or modify your storage settings to enable higher performance.
I am getting the following message from AWS via email, a bit new to new to RDS any help will be appreciated, as to how to fix this problem
...ANSWER
Answered 2021-May-20 at 11:12You have two choices if you don't want to limit usage of your db:
- Increase size of your storage, as for
gp2, the bigger the size the more IOPS you get. - Change from
gp2to Provisioned IOPS SSD where you can specify fixed IOPS that you require. Provisioned IOPS SSD will be probably also more expensive.
QUESTION
I am programming a game for years now but I have a question about how I programmed things up.
So imagine you have a gun class for a game, guns can have many sprites, sounds, casings, projectiles, parameters, etc. So then I just need to create another class extending this gun class and fill my abstract methods up with what I need that particular gun to do.
So I made an abstract class to handle all of the internal code of the gun, if it shoots, if it needs bolt action and how long it has to wait, when to play the fire sound, etc. So basically the main gun class calls for the actual gun class (that is filled with abstract methods) for these parameters.
So my question is, if I am calling these abstract methods over and over again as needed throughout the code is it bad to have the following?
...ANSWER
Answered 2021-Feb-21 at 18:59This design contradicts one of the main OOP principles - Tell-Don't-Ask. I.e. instead of having code like this:
QUESTION
I am all new to Kubernetes and currently setting up a Kubernetes Cluster inside of Azure VMs. I want to deploy Windows containers, but in order to achieve this I need to add Windows worker nodes. I already deployed a Kubeadm cluster with 3 master nodes and one Linux worker node and those nodes work perfectly.
Once I add the Windows node all things go downward. Firstly I use Flannel as my CNI plugin and prepare the deamonset and control plane according to the Kubernetes documentation: https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/adding-windows-nodes/
Then after the installation of the Flannel deamonset, I installed the proxy and Docker EE accordingly.
Used Software Master NodesOS: Ubuntu 18.04 LTS
Container Runtime: Docker 20.10.5
Kubernetes version: 1.21.0
Flannel-image version: 0.14.0
Kube-proxy version: 1.21.0
OS: Windows Server 2019 Datacenter Core
Container Runtime: Docker 20.10.4
Kubernetes version: 1.21.0
Flannel-image version: 0.13.0-nanoserver
Kube-proxy version: 1.21.0-nanoserver
I wanted to see a full cluster ready to use and with all the needed in the Running state.
After the installation I checked if the installation was successful:
...ANSWER
Answered 2021-May-07 at 12:21Are you still having this error? I managed to fix this by downgrading windows kube-proxy to at least 1.20.0. There must be some missing config or bug for 1.21.0.
QUESTION
I'm trying to implement Oboe library into my application, so I can perform low latency audio playing. I could perform panning, playback manipulation, sound scaling, etc. I've been asking few questions about this topic because I'm completely new to audio worlds.
Now I can perform basic things which internal Android audio class such as SoundPool provides. I can play multiple sounds simultaneously without noticeable delays.
But now I encountered another problem. So I made very simple application for example; There is button in screen and if user taps this screen, it plays simple piano sound. However fast user taps this button, it must be able to mix those same piano sounds just like what SoundPool does.
My codes can do this very well, until I taps button too much times, so there are many audio queues to be mixed.
...ANSWER
Answered 2021-May-06 at 10:52Does Oboe stop rendering audio if it takes too much time to render audio like situation above?
Yes. If you block onAudioReady for longer than the time represented by numFrames you will get an audio glitch. I bet if you ran systrace.py --time=5 -o trace.html -a your.app.packagename audio sched freq you'd see that you're spending too much time inside that method.
Did I reach limit of rendering audio, meaning that only limiting number of queues is the solution? or are there any ways to reach better performance?
Looks like it. The problem is you're trying to do too much work inside the audio callback. Things I'd try immediately:
- Different compiler optimisation: try
-O2,-O3and-Ofast - Profile the code inside the callback - identify where you're spending most time.
- It looks like you're making a lot of calls to
sinandcos. There may be faster versions of these functions.
I spoke about some of these debugging/optimisation techniques in this talk
One other quick tip. Try to avoid raw pointers unless you really have no choice. For example AudioStream* stream; would be better as std::shared_ptr and std::vector* players; can be refactored to std::vector players;
QUESTION
I need to asynchronously invoke lambda functions from my EC2 instance. At high level, so many services come to my mind(most likely all of these support my desired functionality) - AWS State machine(not sure), step functions, Active MQ, SQS, SNS. I am aware about pros and cons of each at high level. However not sure which one should I go for :|. Please let me know your feedback.
PS: We expect the invocation in 1000s per second at peak for very short periods. Concurrency for lambda functions is not an issue as we can ask Amazon for increase in the limit along with the burst.
...ANSWER
Answered 2021-Apr-26 at 11:26If you want to invoke asynchronously then you can not use SQS as SQS invoke lambda function synchronously with event source mapping.
You can use SNS to invoke lambda function asynchronously out of the option you listed above.
Better option would be writing small piece of code in any AWS SDK whichever you are comfortable and then call lambda function from that piece of code asynchronously.
Example in python using boto3 asynchronously pass Event in InvocationType to invoke lambda function asynchronously and pass RequestResponse to invoke lambda function synchronously
QUESTION
I am trying to split by date and event columns. It is impossible to search for ". " some lines contain multiple sentences ending with ". " Also, some lines don't start with dates. The idea of the script was to use a regexp to find lines starting with the fragment "one or two numbers, space, letters, period, space" and then replace "point, space" with a rare character, for example, "@". If the line does not start with this fragment, then add "@" to the beginning. Then this array can be easily divided into two parts by this symbol ("@") and written to the sheet.
Unfortunately, something went wrong today. I came across the fact that match(re) is always null. I ask for help in composing the correct regular expression and solving the problem.
Original text:
1 June. Astronomers report narrowing down the source of Fast Radio Bursts (FRBs). It may now plausibly include "compact-object mergers and magnetars arising from normal core collapse supernovae".[3][4]
The existence of quark cores in neutron stars is confirmed by Finnish researchers.[5][6][7]
3 June. Researchers show that compared to rural populations urban red foxes (pictured) in London are mirroring patterns of domestication similar to domesticated dogs, as they adapt to their city environment.[21]
The discovery of the oldest and largest structure in the Maya region, a 3,000-year-old pyramid-topped platform Aguada Fénix, with LiDAR technology is reported.
17 June. Physicists at the XENON dark matter research facility report an excess of 53 events, which may hint at the existence of hypothetical Solar axions.
Desired result:
Code:
...ANSWER
Answered 2021-Apr-25 at 14:59function breakapart() {
const ms = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
const ss = SpreadsheetApp.getActive();
const sh = ss.getSheetByName('Sheet1');//Data Sheet
const osh = ss.getSheetByName('Sheet2');//Output Sheet
osh.clearContents();
const vs = sh.getRange(1, 1, sh.getLastRow(), sh.getLastColumn()).getDisplayValues().flat();
let oA = [];
vs.forEach(p => {
let f = p.split(/[. ]/);
if (!isNaN(f[0]) && ms.includes(f[1])) {
let s = p.slice(0, p.indexOf('.'));
let t = p.slice(p.indexOf('.')+2);
oA.push([s, t]);
} else {
oA.push(['',p]);
}
});
osh.getRange(1,1,oA.length,oA[0].length).setValues(oA);
}
QUESTION
I am writing a discord bot using discord.py, and I ran into some problems. I have a rather large database that needs initialising every time the bot starts to register the new servers/players. And that process takes a long time (20-30s). I am initialising the database inside the on_ready method, so I can have access to all the guilds. And as a result, all the commands that users used during that period are queued and my bot will then "burst" out all the responses for each of the commands. I want to be able to completly ignore messages sent during that initialisation process, to prevent possible rate limits on certain APIs.
I have tried searching on Google/StackOverflow and looking through discord.py docs, but sadly, no results.
here is my code:
...ANSWER
Answered 2021-Apr-23 at 16:01async def on_connect(self):
print("Initialising database...")
self.init_guilds()
async def on_ready(self):
print(f"{self.user} is ready!")
async def on_message(self, message):
if not self.is_ready():
return
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