[qdbm-users] Multi-threaded usage from C

[Prashanth B. <pra...@ma...>]

Hello,

I'm using QDBM (C version). I would like to know if it is safe to use 
multiple handles to the same DB from multiple threads in the same process.

On the QDBM C++ page, there is mention of a bug:
"QDBM has restrictions that two or more handles of the same database 
file should not be used by a process at the same time. So, when a 
database is used by two or more threads, open the database in the main 
thread and pass the handle to each thread."

However, earlier on the same page, it is mentioned that:
"While APIs for C are thread-safe unless plural threads do not share a 
database handle, APIs for C++ are thread-safe even if plural threads 
share a handle. This API is implemented depending on the POSIX thread 
package. If you use another thread package, you should write your own 
C++ wrapper. "

I'm confused - could some one please clarify?

Thanks,
Prashanth