Iker Arizmendi <[EMAIL PROTECTED]> wrote: > Using pysqlite2 I noticed (using ps) that whenever I connected to > a database for the first time an extra thread is spawned. At first > I thought this might be the doing of pysqlite but a quick test with > the sqlite3 command line tool confirmed that this occurs within > sqlite3 itself: > > $ sqlite3 gen-us_en.db > SQLite version 3.3.6 > Enter ".help" for instructions > sqlite> > [1]+ Stopped sqlite3 gen-us_en.db > $ ps > PID TTY TIME CMD > 5484 pts/16 00:00:00 bash > 5753 pts/16 00:00:00 sqlite3 > 5754 pts/16 00:00:00 sqlite3 > 5757 pts/16 00:00:00 ps > $ cat /proc/version > Linux version 2.6.11-gentoo-r4 (gcc version 3.3.5 (Gentoo > Linux 3.3.5-r1, ssp-3.3.2-3, pie-8.7.7.1)) > #6 SMP Mon Apr 4 10:20:09 EST 2005 > > A look at the sqlite3 source shows that pthread_create > is only called twice and is immediately followed by a > matching pthread_join - where does the extra thread come from? >
The extra thread checks for a partular bug in pthreads on some older Linux systems. If the bug is present, SQLite has to take active steps to work around it. -- D. Richard Hipp <[EMAIL PROTECTED]>
