Re: [Valgrind-users] Timer delete

[Domenico P. <pan...@gm...>]

>  [[snip horrible formatting]] 
It looks so good.
Probably your email client messed up it.

Thanks so much for answer.
Good job,
Domenico


Il 12/11/22 01:46, John Reiser ha scritto:
> On 11/11/22 13:23, Domenico Panella wrote:
>> Operating System: Slackware 15.0 (Current) Kernel Version: 5.19.17 
>> (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-8565U 
>> CPU @ 1.80GHz
>>
>> A small example:
>>
>> #include<stdbool.h>
>  [[snip horrible formatting]]
>>
>
> It's a bug (or implementation constraint) in glibc timer.
>
> When I run it under valgrind-3.19.0 with glibc-debuginfo and 
> glibc-debugsource
> installed (2.35-17.fc36.x86_64):  [Notice the annotation "LOOK HERE"]
> =====
> $ valgrind --leak-check=full --sim-hints=no-nptl-pthread-stackcache 
> ./a.out
> ==281161== Memcheck, a memory error detector
> ==281161== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et 
> al.
> ==281161== Using Valgrind-3.19.0 and LibVEX; rerun with -h for 
> copyright info
> ==281161== Command: ./a.out
> ==281161==
> --281161:0:   sched WARNING: pthread stack cache cannot be disabled!  
> <<<<< LOOK HERE <<<<<
> ==281161==
> ==281161== HEAP SUMMARY:
> ==281161==     in use at exit: 272 bytes in 1 blocks
> ==281161==   total heap usage: 3 allocs, 2 frees, 512 bytes allocated
> ==281161==
> ==281161== 272 bytes in 1 blocks are possibly lost in loss record 1 of 1
> ==281161==    at 0x484A464: calloc (vg_replace_malloc.c:1328)
> ==281161==    by 0x4012E42: UnknownInlinedFun (rtld-malloc.h:44)
> ==281161==    by 0x4012E42: allocate_dtv (dl-tls.c:375)
> ==281161==    by 0x4013841: _dl_allocate_tls (dl-tls.c:634)
> ==281161==    by 0x48F5A98: allocate_stack (allocatestack.c:428)
> ==281161==    by 0x48F5A98: pthread_create@@GLIBC_2.34 
> (pthread_create.c:647)
> ==281161==    by 0x4900864: __timer_start_helper_thread 
> (timer_routines.c:147)
> ==281161==    by 0x48F9E36: __pthread_once_slow (pthread_once.c:116)
> ==281161==    by 0x49002CA: timer_create@@GLIBC_2.34 (timer_create.c:70)
> ==281161==    by 0x4011E2: main (timer.c:40)
> ==281161==
> ==281161== LEAK SUMMARY:
> ==281161==    definitely lost: 0 bytes in 0 blocks
> ==281161==    indirectly lost: 0 bytes in 0 blocks
> ==281161==      possibly lost: 272 bytes in 1 blocks
> ==281161==    still reachable: 0 bytes in 0 blocks
> ==281161==         suppressed: 0 bytes in 0 blocks
> ==281161==
> ==281161== For lists of detected and suppressed errors, rerun with: -s
> ==281161== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
> =====
>
>
>
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