Re: [Valgrind-users] Malloc/free in different threads
Thank you! Found the bug in my code!
From: Philippe Waroquiers
Sent: Friday, December 18, 2020 10:04 AM
To: Saurabh T ; Valgrind
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 +, Saurabh T wrote:
> Sorry I forgot to say the false positives are for memory leaks ("definitely
> lost").
>
>
> From: Saurabh T
> Sent: Friday, December 18, 2020 9:44 AM
> To: Valgrind
> 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.
>
> ___
> Valgrind-users mailing list
> Valgrind-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/valgrind-users
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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 +, Saurabh T wrote:
> Sorry I forgot to say the false positives are for memory leaks ("definitely
> lost").
>
>
> From: Saurabh T
> Sent: Friday, December 18, 2020 9:44 AM
> To: Valgrind
> 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.
>
> ___
> Valgrind-users mailing list
> Valgrind-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/valgrind-users
___
Valgrind-users mailing list
Valgrind-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/valgrind-users
Re: [Valgrind-users] Malloc/free in different threads
Sorry I forgot to say the false positives are for memory leaks ("definitely
lost").
From: Saurabh T
Sent: Friday, December 18, 2020 9:44 AM
To: Valgrind
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.
___
Valgrind-users mailing list
Valgrind-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/valgrind-users
[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. ___ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
