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[GNUnet-developers] Threadsafe SQLite
From: |
N. Durner |
Subject: |
[GNUnet-developers] Threadsafe SQLite |
Date: |
Fri, 30 Sep 2005 21:06:08 +0200 |
User-agent: |
Mozilla Thunderbird 1.0.6 (Windows/20050716) |
Hi,
the GPL'ed application GNUnet opens a SQLite DB inside the main thread
and uses statements that were prepared there in a few other threads
(protected by mutexes).
If SQLite was built with "--enable-threadsafe" (as Debian's
"libsqlite3-0" package), sqlite3_step fails with "library routine called
out of sequence".
The FAQ says:
---
An *sqlite3* structure can only be used in the same thread that called
sqlite3_open <http://www.sqlite.org/capi3ref#sqlite3_open> to create it.
You cannot open a database in one thread then pass the handle off to
another thread for it to use.
---
But this is only true for Unix builds compiled with
"--enable-threadsafe" (os_unix.c:1050). Statements prepared in the way
described above work on Win32 (os_win.c:628) and if SQLite isn't threadsafe.
Is this behavior really intended?
Thanks a lot,
Nils Durner
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