| From: | Andreas Karlsson <andreas(at)proxel(dot)se> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Check for interrupts in bf and xdes crypt() |
| Date: | 2015-12-15 08:35:41 |
| Message-ID: | 566FD0DD.4020303@proxel.se |
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| Lists: | pgsql-hackers |
Hi,
Here is a patch which makes it possible to cancel a query which runs the
crypt() function with the bf or xdes hashing algorithm, e.g.
crypt('foo', gen_salt('bf', 13)). The md5 algorithm does not run for
multiple rounds so there is no reason to patch it.
I noticed this problem when I accidentally picked a too high n for the
number of hash rounds.
I have added a call to CHECK_FOR_INTERRUPTS() after every round, and I
could not measure any performance hit from this.
Andreas
| Attachment | Content-Type | Size |
|---|---|---|
| crypt-interrupts-v01.patch | text/x-diff | 1003 bytes |
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