Multiple QRegExp crashes when multithreading in KRunner

Thiago Macieira thiago at
Fri Jan 14 17:48:41 GMT 2011

On Friday, 14 de January de 2011 13:46:19 Sebastian Trueg wrote:
> However, the query parser still uses static QRegExp objects which seems
> a bad idea, isn't that right?

static QRegExp are a bad idea regardless of whether threading is involved or 

> Thus, I suppose it would be better to wrap them in a mutex'ed object and
> create that via K_GLOBAL_STATIC?

It's your choice. If you use global objects without mutex protection, you must 
mark your functions as thread-unsafe and not reentrant. Then whoever is using 
them must be sure to avoid concurrency.

You don't need K_GLOBAL_STATIC for mutex protection, but it would be nice.

Thiago Macieira - thiago (AT) - thiago (AT)
  Senior Product Manager - Nokia, Qt Development Frameworks
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