Re: Malloc/free in different threads

Thank you! Found the bug in my code!


From: Philippe Waroquiers <[email protected]>
Sent: Friday, December 18, 2020 10:04 AM
To: Saurabh T <[email protected]>; Valgrind <[email protected]>
Subject: Re: [Valgrind-users] Malloc/free in different threads 
 
Hello,

No, valgrind/memcheck leak search is not impacted by the fact that one thread allocates
some memory and that the release/free is done by another thread.
That should not lead to a definite leak.

So, if Valgrind tells that there are definite leaks, that is likely real leaks
to be investigated.

Philippe


On Fri, 2020-12-18 at 14:53 +0000, Saurabh T wrote:
> Sorry I forgot to say the false positives are for memory leaks ("definitely lost").
> 
> 
> From: Saurabh T <[email protected]>
> Sent: Friday, December 18, 2020 9:44 AM
> To: Valgrind <[email protected]>
> Subject: [Valgrind-users] Malloc/free in different threads 
>  
> Hi, I believe I am seeing lots of false positives in valgrind if I call free() on a different thread from the one that called malloc() - 
> the pointers are exchanged between threads safely in between. Is this a known issue, or am I doing something wrong? Thank you.
> 
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