[fpc-pascal] Question on how to avoid memory trouble

[Jonas Maebe]

On 13 feb 2007, at 13:12, Helmut Hartl wrote:

>> Exactly, and cmpxchg etc. are really expensive too. Since
>> the original FPC heap uses already several pools, it should
>> be easily possible to make it scale better in multi threaded
>> applications.
>
> Fine that sounds really nice - Do you already have a idea what
> is not optimal and can be enhanced ?

The default memory manager is always entirely locked, while  
differently sized blocks are allocated from different pools. So it  
should be possible to lock only one pool per allocation.  
Additionally, getting a block from a pool may even be possibly using  
a few atomic operations rather than by acquiring a lock.

See rtl/inc/heap.inc


Jonas