kandi X-RAY | multithread Summary
kandi X-RAY | multithread Summary
multithread
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Get the list of DLs from the specified URL
- Gets the file name without suffix
- Gets the file name from url
- Build the request
- Build the paramters
- Runs a download
- Get a connection to a HTTP method
- Returns the size of the file
- Checks if the file exists
- Builds an HttpURLConnection
- Build an HttpURLConnection
- Override this method to handle the request parameters
- Compares this DL with another object
- Performs a HTTP GET request
- On upgrade
- Returns the content of this response
- Performs an HTTP GET on the specified URL
- Get MD5 hash of string
- Insert a list
- Runs the polling
- Create a hash code
multithread Key Features
multithread Examples and Code Snippets
Community Discussions
Trending Discussions on multithread
QUESTION
I have read about loader but can anybody explain what is the real use of a loader and why it uses or any real case scenario where loader should be used instead of other multithreading solutions
...ANSWER
Answered 2021-Jun-15 at 10:03Loaders should not be used anymore. It has been deprecated as of Android P (API 28). From the official docs:
Loaders have been deprecated as of Android P (API 28). The recommended option for dealing with loading data while handling the Activity and Fragment lifecycles is to use a combination of ViewModels and LiveData.
But on the Android developers site you can still find a documentation with samples, where it was used.
QUESTION
In this video, he shows how multithreading runs on physical(Intel or AMD) processor cores.
and
All these links basically say:
Python threads cannot take advantage of many physical cores. This is due to an internal implementation detail called the GIL (global interpreter lock) and if we want to utilize multiple physical cores of the CPU
we must use true parallel multiprocessing
module
But when I ran this below code on my laptop
...ANSWER
Answered 2021-Jun-15 at 08:06https://docs.python.org/3/library/math.html
The math module consists mostly of thin wrappers around the platform C math library functions.
While python itself can only execute a single instruction at a time, a low level c function that is called by python does not have this limitation.
So it's not python that is using multiple cores but your system's well optimized math library that is wrapped by python's math module.
That basically answers both your questions.
Regarding the usefulness of multiprocessing
: It is still useful for those cases, where you're trying to parallelize pure python code or code that does not call libraries that already use multiple cores.
However, it comes with inter process communication (IPC) overhead that may or may not be larger than the performance gain that you get from using multiple cores. Tuning IPC is therefore often crucial for multiprocessing in python.
QUESTION
Im trying to create a multithreaded namedpipe server as outlined in the msdn sample here https://docs.microsoft.com/en-us/windows/win32/ipc/multithreaded-pipe-server but Im trying to restrict the namedpipe to access by adminstrators group members only.
The example works correctly when no SECURITY_ATTRIBUTES structure is specified but when an SA is specified the first call is successful, but following calls to CreateNamedPipe fail as long as the first pipe is listening or communicating with a client. The create call fails, usually with ACCESS_DENIED, but sometimes with error 1305 The revision level is unknown. When the first pipe closes due to client disconnecting the following call will be successful for the next createnamedpipe call but will in turn fail once that pipe has a client.
I have tried multiple values for the grfInheritance field with no avail. This is my first adventure into explicitly specifying SECURITY so forgive me if I have missed something obvious. Note that in the Function that calls createnamedpipe I create a new SA structure with each create attempt but I have also tried creating one and sharing it outside the create loop.
Relevant code follows:
function that creates the pipe:
...ANSWER
Answered 2021-Jun-15 at 02:23According to Named Pipe Security and Access Rights,
In addition to the requested access rights, the DACL must allow the calling thread FILE_CREATE_PIPE_INSTANCE access to the named pipe.
QUESTION
Hello i have a csv with about 2,5k lines of outlook emails and passwords
The CSV looks like
header:
username, password
content:
test1233@outlook.com,123password1
test1234@outlook.com,123password2
test1235@outlook.com,123password3
test1236@outlook.com,123password4
test1237@outlook.com,123password5
the code allows me to go into the accounts and delete every mail from them, but its taking too long for 2,5k accounts to pass the script so i wanted to make it faster with multithreading.
This is my code:
...ANSWER
Answered 2021-Jun-11 at 19:02This is not necessarily the best way to do it, but the shortest in writitng time. I don't know if you are familiar with python generators, but we will have to use one. the generator will work as a work dispatcher.
QUESTION
I am having trouble understanding how to get simple multi-threading to work in python. Here is a simple script I have written in python that should simultaneously write to two different files:
...ANSWER
Answered 2021-Jun-14 at 04:56Here:
QUESTION
Now i have List of ProductDTO, and Product.
This list can contains 100 objects, and can also contains 1m of objects.
This list i am reading from csv file.
How i am filtering it now:
...ANSWER
Answered 2021-Jun-11 at 11:39I used to construct map and use get on it to avoid filter on loop.
For instance, if you Have N code for 1 product, you can do :
QUESTION
I'm making a program that you can draw in and when there are more than 38000 _points it starts to lag.
here's the code:
...ANSWER
Answered 2021-Jun-08 at 00:17It's unclear what OPTIMIZE
and IIIINNZ
do.
Without being able to run your code and test I can't tell if those function slow it down or is it simply the (re)rendering.
I advise using VisualVM to Profile the CPU usage of your sketch(PApplet subclass). The CPU Profiler will list the methods from the slowest:
Focus your efforts on the top slowest and try not to sacrifice code readability if possible.
(On code readability I recommend using a Java Style guide overall. It will save time scanning/reading longer and longer programs)
Your question reminds me a little bit of an older one I answered a while ago.
It's similar because of the many lines rendered. In addition yours uses distance()
(which in turn uses Math.sqrt()
which can cost the CPU a bit, but as much as rendering. You could use squared distance instead, but that will make the code a bit harder to read and if compared to rendering isn't that slow I'd leave that in).
Essentially there are many point instances that render lines based on threshold distances. Each stroke()
, strokeWeight()
, line()
call will have it's cost.
I've tried to group line rendering into something simpler: a single shape accessing all the point instances:
QUESTION
I am new to handling multiprocessing, multithreading etc.. in python.
I am trying to subscribe to multiple Websocket streams from my crypto exchange (API Docs Here), using multiprocessing
.
However, when I run the code below, I only receive ticker information
, but not order book updates
.
How can I fix the code to get both information?
What is the reason that only one websocket seems to be working when it's run on multiprocessing
?
(When I run the functions ws_orderBookUpdates()
and ws_tickerInfo()
separately, without using multiprocessing
, it works fine individually so it is not the exchange's problem.)
ANSWER
Answered 2021-Jun-08 at 12:46Update
You have created two daemon processes. They will terminate when all non-daemon processes have terminated, which in this case is the main process, which terminates immediately after creating the daemon processes. You are lucky that even one of the processes has a chance to produce output, but why take chances? Do not use dameon processes. Instead:
QUESTION
I'm trying to import contacts using RunspacePools, but I'm having trouble getting it to work. If I take it out of the runspace logic, it works fine, just takes a long time. I'd really like to use runspacepools to speed up the import process and make it run multithreaded so it imports faster. On avg each import takes about 5-6 mins per user, and I have about 500 users, so it can take up to 3000 mins to run.
Here is what I currently have:
...ANSWER
Answered 2021-Jun-07 at 18:37There is a bunch of code to go through so I'm gonna give you a blueprint of how you can achieve processing all users in $users
using ThreadJob
.
So, step by step, I'll try to add as much comments as I consider appropriate to guide you through the thought process.
I'm not sure what is the output of your function since I see an | Out-Null
at the end of the Invoke-RestMethod
. You would need to clarify on this.
QUESTION
I have a multithreaded program and eacch thread focuses on its own work. When a thread finishes its work, it will drive the event to the main thread.
So I want to use the pthread condition variable to implement the idea (i.e. pthread_cond_t and pthread_mutex_t). The data structure will be like:
...ANSWER
Answered 2021-Jun-07 at 18:19Yes, you can safely wait on a "compound predicate," where one signal means "this state changed or that state changed or some other state changed or ..."
In your case, those states are the event_v
flags you set. Presuming your main thread is in a loop, and that the event_v
flags are initialized to false
, it'd look something like this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install multithread
You can use multithread 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 multithread 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
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page