On Fri, 2022-11-11 at 18:13 +0100, Paul Floyd wrote:
> 
> On 11/11/22 17:47, Domenico Panella wrote:
> > Hi,
> > 
> > I am getting a memory leak in my program about timer_delete function.
> > 
> > According valgrind output,
> > 
> > It seems that the timer_delete function doesn't release the memory.
> > 
> > ==18483== HEAP SUMMARY:
> > ==18483==     in use at exit: 272 bytes in 1 blocks
> > ==18483==   total heap usage: 54 allocs, 53 frees, 9,354 bytes allocated
> > ==18483==
> > ==18483== 272 bytes in 1 blocks are possibly lost in loss record 1 of 1
> > ==18483==    at 0x48475FF: calloc (vg_replace_malloc.c:1328)
> > ==18483==    by 0x4012075: _dl_allocate_tls (in /lib64/ld-2.36.so)
> > ==18483==    by 0x491EB49: pthread_create@@GLIBC_2.34 (in 
> > /lib64/libc-2.36.so)
> > ==18483==    by 0x492922D: __timer_start_helper_thread (in 
> > /lib64/libc-2.36.so)
> > ==18483==    by 0x4922E66: __pthread_once_slow (in /lib64/libc-2.36.so)
> > ==18483==    by 0x4928D3A: timer_create@@GLIBC_2.34 (in 
> > /lib64/libc-2.36.so)
> > ==18483==    by 0x401711: main (main.c:224)
> > ==18483==
> > ==18483== LEAK SUMMARY:
> > ==18483==    definitely lost: 0 bytes in 0 blocks
> > ==18483==    indirectly lost: 0 bytes in 0 blocks
> > ==18483==      possibly lost: 272 bytes in 1 blocks
> > ==18483==    still reachable: 0 bytes in 0 blocks
> > ==18483==         suppressed: 0 bytes in 0 blocks
> > ==18483==
> > ==18483== For lists of detected and suppressed errors, rerun with: -s
> > ==18483== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
> > 
> > What do i wrong?
> 
> Which OS and CPU?
> 
> Is this repeatable?
> 
> It's possible that this is some memory that ought to be freed by the 
> glibc freeres function.
Possibly --sim-hints=no-nptl-pthread-stackcache might help (if I re-read the 
manual entry
for this sim-hint).

Philippe






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