Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The problem is in the implementation of <code>std::this_thread:sleep_until(..)</code> which calls <code>sleep_for(..)</code>, which calls <code>nanosleep()</code>.</p> <p>(See the <a href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-api-4.5/a01060_source.html#l00271" rel="nofollow noreferrer">gnu sources</a>, line 271.)</p> <p>See the following Stackoverflow questions:</p> <ul> <li><a href="https://stackoverflow.com/questions/1125297/nanosleep-high-cpu-usage">nanosleep high cpu usage?</a> (Linux high-cpu issue calling nanosleep.)</li> <li><a href="https://stackoverflow.com/questions/3072912/boostthis-threadsleep-vs-nanosleep">boost::this_thread::sleep() vs. nanosleep()?</a></li> </ul> <p>You don't appear to need the high resolution of <code>nanosleep()</code>. You might write your own solution with a permissive open source license, and call <code>sleep()</code> instead of <code>nanosleep().</code></p> <p>If you do need sub-second resolution, I recommend the technique of calling <code>select()</code> rather than <code>nanosleep()</code>. <code>select()</code> is designed to block very efficiently for sub-second delays, and the timeout parameter is respected accurately enough by most operating systems that it is useful for sub-second timing while yielding the CPU.</p> <p>You can even create a socket for the purpose of passing to <code>select()</code>, in the<code>error_fds</code> parameter, where the socket can be used as a cross-thread "signal" when it is passed to <code>close()</code> and becomes an "error" state socket.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow not to hog CPU while waiting for some event?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USHeath Hunnicutt
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    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. COWhat would switching to a permissive license achieve?
      singulars
      1. PO
      1. USLuc Danton
    2. COMany thanks for the advice. I use gcc's c++0x std::this_thread::sleep_for actually. I will consider your suggestions.
      singulars
      1. PO
      1. USwill
    3. CO@ildjarn -- The same problem has been reported post 2.6.22, so I disagree.
      singulars
      1. PO
      1. USHeath Hunnicutt
 

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