Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>From the <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_join.html">opengroup page for pthread_join</a>,</p> <blockquote> <p>The pthread_join() function provides a simple mechanism allowing an application to wait for a thread to terminate. After the thread terminates, the application may then choose to clean up resources that were used by the thread. For instance, after pthread_join() returns, any application-provided stack storage could be reclaimed.</p> <p>The pthread_join() or pthread_detach() function should eventually be called for every thread that is created with the detachstate attribute set to PTHREAD_CREATE_JOINABLE so that storage associated with the thread may be reclaimed.</p> </blockquote> <p>and from the <a href="http://linux.die.net/man/3/pthread_join">man page of pthread_join</a></p> <blockquote> <p>Failure to join with a thread that is joinable (i.e., one that is not detached), pro‐ duces a "zombie thread". Avoid doing this, since each zombie thread consumes some system resources, and when enough zombie threads have accumulated, it will no longer be possible to create new threads (or processes).</p> <p>There is no pthreads analog of waitpid(-1, &amp;status, 0), that is, "join with any ter‐ minated thread". </p> <p>If you believe you need this functionality, you probably need to rethink your application design.</p> </blockquote> <p>If you do <a href="http://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_detach.html">pthread_detach</a>,</p> <blockquote> <p>The pthread_detach() function shall indicate to the implementation that storage for the thread thread can be reclaimed when that thread terminates</p> </blockquote> <p>If you don't <code>detach</code> or <code>join</code> a <code>joinable</code> thread, it can cause waste of resources</p>
    singulars
    1. This table or related slice is empty.
    1. POIs it needed to detach pthread to prevent memory leaks?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USSuvarna Pattayil
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POIs it needed to detach pthread to prevent memory leaks?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. CODeleted my answer, yours is better.
      singulars
      1. PO
      1. USBoBTFish
    2. COSo when I want to exit the application, is it a good practice to iterate through e.g. a `vector` of created threads and `deatch` them (eventually `detach` certain thread after it has finished its' work) ? I'm asking because I'm not sure if I understood the difference between `join` and `detach` well. But it seems to me, that I can be sure , that `detach` will terminate the thread, just after I call it, right?
      singulars
      1. PO
      1. USDworza
    3. COIf you make the thread as detached, the thread's resources will be freed when the thread is done with the work. Join is used for joining to a thread (if you do a join on some thread in main, main wont finish execution until the thread is terminated and its resourcces are freed). `join` and `detach` are used for different purposes. But they both do release the resources.Detach is not for terminating the thread, thread will terminate on its own.Detached means no one is waiting for the thread to terminate. (like in join, someone is waiting for the thread to terminate so it can be joined
      singulars
      1. PO
      1. USSuvarna Pattayil
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload