Side effects of flush() OutputStreamWriter to Network
java,performance,networking,flush
Each time you write to a socket, you add between 5 and 15 micro-seconds. For buffered output, this occurs when you flush() the data. Note: if you don't have a buffered output, it will be performed on every write() and the flush() won't do anything. Fortunately the OS expects applications...
labview using advantech dll : memory leak ? + Bluescreen
dll,memory-leaks,flush,labview
Problem solved after a few weeks : There was a software memory leak in the manufacturer DLL. Changed my way of measuring to avoid the problem. There was only a few % of people having this problem...
Need Python 3.4 version of print() from __future__
python,python-2.7,python-3.x,printing,flush
You cannot get the version from 3.4 imported into Python 2.7, no. Just flush sys.stdout manually after printing: import sys print(...) sys.stdout.flush() Or you can create a wrapper function around print() if you have to have something that accepts the keyword argument: import sys from __future__ import print_function try: #...
How to make HttpResponse.Flush() async?
Your approach for creating async wrapper is fine. But here are few things you should know. Response.Flush() forces the complete buffer to send to the client. So try to avoid sending a complete 1 Gig+ data on the client at once. This might engage the client processing that huge buffer...
BufferedWriter/PrintWriter/OutputStreamWriter don't flush buffer until .close() is called (over socket outputstream)
java,sockets,inputstream,outputstream,flush
Try with auto flush property of PrintWriter that flush the data once new line methods are calle. There is no need to call flush after writing any data in the stream. Unlike the PrintStream class, if automatic flushing is enabled it will be done only when one of the println,...
PHP pthreads, in pool tasks, ob_flush and flush cause crash
php,apache,pthreads,threadpool,flush
Multiple threads should not write standard output, there is no safe way to do this. Zend provides no facility to make it safe, it works by coincidence, and will always be unsafe....
How to force flushing in Grails GORM
You can get the session using the withSession method available in all domain classes and call to flush() on it. Operator.withSession { session -> // ... session.flush() } ...
c - Write directly to disk, bypass page cache?
For Linux you can open the disk device with the O_DIRECT flag to bypass page cache.
When NOT to use EntityManager.flush()?
java,jpa,eclipselink,entitymanager,flush
A call to flush() synchorizes the persistence context with the database. This is primarily required - if there needs to be a query hit ( via JPQL etc) later in the call stack to the database, and if the persistence context contains a dirty value for any of the objects...
NHibernate: How to know if, on Flush() SQL will be sent?
session,nhibernate,flush,dirty-data
In my experience Ghosts can be caused by the database being a nullable int and the mapping an ordinary int. When the entity gets hydrated the nullable db int is converted to zero and hence it is now dirty. Another way to get dirty records is by specifying a wrong...
How to determine the discriminator column value from within an entity with ZF2 and Doctrine
doctrine2,zend-framework2,flush,discriminator
You can use instanceof php operator to check object's class. Like that: if ($this instanceof MeetingEntityClass) { //... } ...
Does FileDescriptor.sync() work for all file data or just file data originating within the callers JVM
java,caching,sync,flush,file-descriptor
Does FileDescriptor.sync() work for all file data No. or just file data originating within the callers JVM It works on the current file descriptor only, which is necessarily within the caller's JVM, along with the data he is writing....
Symfony2 Doctrine - Flushing in kernel.response listener flushs bad data
symfony2,doctrine,listener,flush
I recently stumbled across problems with flushing in kernel.response when upgrading from Doctrine 2.3.4 to the latest 2.4 branch. Try flusing the log entities from kernel.terminate. Leave any modifications to the Response in kernel.response.
How to clear the contents read by cin
std::cin.ignore(); to ignore one character. std::cin.ignore(n); to ignore n characters. std::cin.ignore(std::numeric_limits<std::streamsize>::max()); to ignore all characters. Optionally, add a second parameter to define a delimiting character. The default is EOF....
Reading sentences as string inputs from users
How do you terminate the input that becomes T? With a newline. What happens with that newline after you read into T? It's still left in the input buffer. What will happen when you next call std::getline, what is the first character it will read? The newline, and what happens...
C# flush redirected console output
c#,redirect,visual-studio-2013,flush
Open the Immediate Window, Debug > Windows > Immediate Window. Type in Console.Out.Flush() and hit Enter. This will invoke Flush on the output stream, on another thread, without interfering with your current breakpoint....
Typo on wikipedia input/output examples
No, standard output is flushed when the program terminates normally. (If a simple "Hello, world" program terminates abnormally, there's probably not much you can do about it.) You might want to clarify that point, though (that the flush happens at the end of the program, not on the std::cout <<...
Python: why is this print automatically flushing to screen without flush()?
Using flush will generally guarantee that flushing is done but assuming the reverse relationship is a logical fallacy, akin to: Dogs are animals. This is an animal. Therefore this is a dog. In other words, not using flush does not guarantee flushing will not happen. Interestingly enough, using Python 2.7.8...
Cannot cin.ignore till EOF?
c++,delimiter,cin,flush,ignore
The ignore function name is a little bit misleading. What it actually does it read and discard input until the terminator is found. And that's a blocking read. In your case, whatever input stream you are using with cin (by default it is stdin) never delivers an end-of-file condition, so...
Implementation of Java OutputStream flush() method
Your question is about "implementing" flush() but your code is not implementing an output stream. I guess you either want to ask about "using" flush() or you miss the fact that getOutputStream() returns an implementation of OutputStream which most likely does have a working flush() (in some cases it is...
Why hbase memstore size and flushed data size are not equal?
MemStore stores KeyValues (KV) in ConcurrentSkipListMap structure with overhead per KV of 124 bytes on a 64-bit JVM. If your puts have small payload, for example one column with a few bytes of value, you're going to observe a substantial difference between KV heap size and their size on disk....
what is the use of flushing in this instance?
Flush guarantees that the output is to be written to standard output immediately, whereas if you don't flush then it might (potentially) stick around in the buffer for an unspecified amount of time. Exactly whether the string will stay depends on the output device. Some output devices are line-buffered, so...
Is processor cache flushed during context switch in multicore?
caching,multicore,volatile,flush,context-switch
Whenever there is any sort of context switch the OS will save its state such that it can be restarted again on any core (assuming it has not been tied to a specific core using a processor affinity function). Saving a state that for some reason or other is incomplete...
PHP fsockopen subfolder
php,stream,flush,fread,fsockopen
UPDATE: Solved by myself: the correct code is <?php function HTTP_Post($URL) { ob_start(); $URL_Info=parse_url($URL); $fp = fsockopen($URL_Info["host"],80); fwrite($fp, "GET ".$URL_Info["path"]." HTTP/1.0\r\n" ); fwrite($fp, "Host: ".$URL_Info["host"]."\r\n"); fwrite($fp, "Connection: Close\r\n\r\n"); while(!feof($fp)) { echo fgets($fp, 1024); ob_flush(); flush(); } fclose($fp); } ini_set('max_execution_time', 300); HTTP_Post("http://www.corriere.it/cronache/"); ?> ...
Guarantee disk cache was flushed with fsync
Silly me, I read the documentation once again and it clearly states (redacted): fsync() transfers ... all modified in-core data of ... the file referred to by the file descriptor fd to the disk device ... so that all changed information can be retrieved even after system crashed ... This...
Symfony2 Gedmo Loggable crashes out on flush call
So, after carefully walking the stack trace and looking at the Loggable functions, it dawned on me that the error was clearly from loggable attempting to implement a function from one of my entities, which told me that somewhere I had a class somewhere it shouldn't be (as I wanted...
.Net BinaryWriter automatically flushes stream when checking stream Position
Looks like the BinaryWriter class forces excessive Flushing and there's no way to override it. I'll just keep a reference to the original stream and check position on it directly. I found the (alleged) source code here: http://reflector.webtropy.com/default.aspx/[email protected]/[email protected]/DEVDIV_TFS/Dev10/Releases/RTMRel/ndp/clr/src/BCL/System/IO/[email protected]/1305376/[email protected] /* * Returns the stream associate with the writer. It flushes all...
Flushing Rails template output
ruby-on-rails,performance,templates,flush,ruby-on-rails-4.1
As said in comments, this was added in Rails, but not as a default: you need to trigger this behaviour by specifying the stream option to render: render stream: true The documentation for this feature can be found here....
Restarting a Clip object - flush() method
java,flush,javasound,clip,javax.sound.sampled
A data line like Clip has an internal data buffer, probably a byte[]. The buffer will be typically filled in chunks, ahead of the playback position. Suppose at some instant we have: playback position v buffer: [..|.....] file: [..........|.....................] So if we stop the line, the buffer still has data...
Flush cout manually only
Use std::cout << '\n' instead of std::endl. This avoids the flush after every line. std::endl will always flush, since that is its purpose. There's no option to disable that behavior. However, there's no requirement to use std::endl at all. If you want to increase the buffer size for standard output,...
symfony2 doctrine2 not flushing new entity
php,symfony2,doctrine2,entity,flush
I figured it out! I thought that defining by_reference => false in the form was only for collections but it's also the case here. I had to add the following code : /** * Add recipeCategory * * @param RecipeCategory $recipeCategory * * @return Recipe */ public function addRecipeCategory(RecipeCategory $recipeCategory)...
How to reconcile gzip compression and the flushing of the header of index.php
Luckily I was wrong. Even though GZIP needs to be downloaded completely before you can unpack it, you dont have to send just one chunk. You can send several seperate chunks, where each one is encoded separately. This means the browsers needs to download chunk one completely and then it...
Issues with \r and \n or Buffer Flushing
You could try clearing the console after every execution with something like system("cls"); here is a link to a post [How can I clear console
Add values before Doctrine Flush
You dont need to use getData or setData on the form, you should use the setter of the entity itself. What you will save/persist is not the form, its the entity. The form is also using the setters on the entity class for the data which was sent. like: public...