[fpc-devel] Re: Compiler bottlenecks

Mattias Gärtner nc-gaertnma at netcologne.de
Thu Jul 15 11:41:44 CEST 2010

Zitat von Jonas Maebe <jonas.maebe at elis.ugent.be>:

> Michael Schnell wrote on Thu, 15 Jul 2010:
>> Did somebody take a look at FastMM for Delphi ? (  
>> http://sourceforge.net/projects/fastmm/ )
>> Same seems to use a nice paradigm doing the Memory management for  
>> threaded applications.
> Then please explain that paradigm, since apparently you already looked at it.
> In return, I will explain the FPC heap manager's paradigm: per  
> thread, there is a separate heap manager so that in most cases no  
> synchronisation is required. Only if memory is allocated in one  
> thread and freed in another, then it will be added to a global  
> locked structure. When a thread runs out of memory in its pools, it  
> will first check this global (synchronised) structure before asking  
> for more memory from the OS.

Does that mean, if I let a worker thread create strings, pass them to  
the main thread, free the worker thread and unreference the strings in  
the main thread the global structure will grow and grow?


More information about the fpc-devel mailing list