flush

Is there any way to get an entity ID before the persist/flush? I mean: $entity = new PointData(); $form = $this->createForm(new PointDataType(), $entity); If I try $entity->getId() at this point, it returns nothing. I can get it working by: $em->persist($entity); $em->flush(); (supposing $em = $this->getDoctrine()->getEntityManager(); ) How can I achieve this? If you want to know the ID of an entity before it's been persisted to the database, then you obviously can't use generated identifiers. You'll need to find some way to generate unique identifiers yourself (perhaps some kind of hash

I’ve just noticed that the following code doesn’t compile in OpenMP (under GCC 4.5.1): struct job { unsigned busy_children; }; job* j = allocateJob(…); // … #pragma omp flush(j->busy_children) The compiler complains about the -> in the argument list to flush, and according to the OpenMP specification it’s right: flush expects as arguments a list of “id-expression”s, which basically means only (qualified) IDs are allowed, no expressions. Furthermore, the spec says this about flush and pointers: If a pointer is present in the list, the pointer itself is flushed, not the memory block to which the

I'm timing the difference between various ways to print text to standard output. I'm testing cout , printf , and ostringstream using both \n and std::endl . I expected std::endl to make a difference with cout (and it did), but I didn't expect it to slow down output with ostringstream . I thought using std::endl would just write a \n to the stream and it would still only get flushed once. What's going on here? Here's all my code: // cout.cpp #include <iostream> using namespace std; int main() { for (int i = 0; i < 10000000; i++) { cout << "Hello World!\n"; } return 0; } // printf.cpp #include

My client is a web browser, and sending request to myserver using this url: http://localhost This is the server side code. The problem lies in the run method of the ServingThread class. class ServingThread implements Runnable{ private Socket socket ; public ServingThread(Socket socket){ this.socket = socket ; System.out.println("Receives a new browser request from " + socket + "\n\n"); } public void run() { PrintWriter out = null ; try { String str = "" ; out = new PrintWriter( socket.getOutputStream() ) ; out.write("This a web-page.") ; // :-( out.flush() ; // :-( socket.close() ; System.out

I'm using RandomAccessFile in java: file = new RandomAccessFile(filename, "rw"); ... file.writeBytes(...); How can I ensure that this data is flushed to the Operating System? There is no file.flush() method. (Note that I don't actually expect it to be physically written, I'm content with it being flushed to the operating system, so that the data will survive a tomcat crash but not necessarily an unexpected server power loss). I'm using tomcat6 on Linux. The only classes that provide a .flush() method are those that actually maintain their own buffers. As java.io.RandomAccessFile does not

I have the following two lines in perl: print "Warning: this will overwrite existing files. Continue? [y/N]: \n"; my $input = <STDIN>; The problem is that the print line does not get executed before the perl script pauses for input. That is, the perl script just seems to stop indefinitely for no apparent reason. I'm guessing that the output is buffered somehow (which is why I put the \n in, but that doesn't seem to help). I'm fairly new to perl, so I would appreciate any advise on how to get around this issue. By default, STDOUT is line-buffered (flushed by LF) when connected to a terminal,

Does anyone know how to flush the disk write cache data from the cache manager for the current directory (or any given file or directory, for that matter), from a Windows command line? I found the SysInternals Sync worked well for me - although it flushes ALL cache, not just for the specific folder. Example of usage: IF EXIST Output RD /S /Q Output && Sync && MD Output By default it flushes all cached data for all drives - you can specify command-line options to restrict which drives but you cannot restrict it to just specific folders. Without it I would often get Access denied errors because