https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97461
--- Comment #19 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #16)
> (In reply to Sergei Trofimovich from comment #15)
> > allocate_gcov_kvp() gets called 89 times. Tried as:
>
> All right, it's quite close to what we have.
> So can you please test the following patch:
>
> diff --git a/gcc/gcov-io.h b/gcc/gcov-io.h
> index 4e95c7c82ee..a899a02b765 100644
> --- a/gcc/gcov-io.h
> +++ b/gcc/gcov-io.h
> @@ -293,7 +293,7 @@ GCOV_COUNTERS
> #define GCOV_TOPN_MAXIMUM_TRACKED_VALUES 32
>
> /* Number of pre-allocated gcov_kvp structures. */
> -#define GCOV_PREALLOCATED_KVP 64
> +#define GCOV_PREALLOCATED_KVP 128
>
> /* Convert a counter index to a tag. */
> #define GCOV_TAG_FOR_COUNTER(COUNT) \
Still hangs somewhere in the middle of firefox inners:
(gdb) bt
#0 __lll_lock_wait (futex=0x7f03a8900018, private=0) at lowlevellock.c:52
#1 0x00007f03a9097305 in __GI___pthread_mutex_lock (mutex=0x7f03a8900018) at
../nptl/pthread_mutex_lock.c:135
#2 0x0000556eee199141 in arena_t::MallocSmall(unsigned long, bool) ()
#3 0x0000556eee19a06c in arena_t::Malloc(unsigned long, bool) ()
#4 0x0000556eee19b1e2 in calloc ()
#5 0x0000556eee28ba2b in allocate_gcov_kvp () at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov.h:431
#6 gcov_topn_add_value (count=1, use_atomic=1, increment_total=1, value=480,
counters=0x556eee2fc8c0
<__gcov3._ZL20arena_run_reg_dallocP11arena_run_tP11arena_bin_tPvm>)
at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov.h:477
#7 __gcov_topn_values_profiler_body (use_atomic=1, value=480,
counters=0x556eee2fc8c0
<__gcov3._ZL20arena_run_reg_dallocP11arena_run_tP11arena_bin_tPvm>)
at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-profiler.c:103
#8 __gcov_topn_values_profiler_atomic (counters=0x556eee2fc8c0
<__gcov3._ZL20arena_run_reg_dallocP11arena_run_tP11arena_bin_tPvm>, value=480)
at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-profiler.c:128
#9 0x0000556eee198055 in arena_t::DallocSmall(arena_chunk_t*, void*,
arena_chunk_map_t*) ()
#10 0x0000556eee19865c in free ()
#11 0x00007f03a8ca5bff in _IO_deallocate_file (fp=0x7f0372220b60) at
libioP.h:863
#12 _IO_new_fclose (fp=0x7f0372220b60) at iofclose.c:74
#13 0x00007f039dbd5b62 in __gcov_close () at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/../gcc/gcov-io.c:212
#14 0x00007f039dbd62ed in dump_one_gcov (run_max=139, run_counted=0,
gf=<synthetic pointer>, gi_ptr=0x7f03a3c432e0)
at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-driver.c:516
#15 gcov_do_dump (list=<optimized out>, run_counted=0) at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-driver.c:555
#16 0x00007f039dbd7152 in __gcov_dump_one (root=0x7f03a616b700 <__gcov_root>)
at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-driver.c:578
#17 __gcov_dump_one (root=0x7f03a616b700 <__gcov_root>) at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-driver.c:573
#18 0x00007f039dbd7318 in __gcov_dump_int () at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-interface.c:160
#19 __gcov_dump () at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-interface.c:170
#20 0x00007f039dbd5497 in __gcov_execve
(path=0x7f036db530b0
"/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/firefox",
argv=0x7f0372632a00, envp=0x7f036cc8e000)
at
/var/tmp/portage/sys-devel/gcc-11.0.0_pre9999/work/gcc-11.0.0_pre9999/libgcc/libgcov-interface.c:343
#21 0x00007f039388b0fb in
base::LaunchApp(std::vector<std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >,
std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > > > const&, base::LaunchOptions const&, int*) ()
at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#22 0x00007f0393929bac in mozilla::ipc::PosixProcessLauncher::DoLaunch() () at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#23 0x00007f039392a35a in
mozilla::ipc::BaseProcessLauncher::PerformAsyncLaunch() ()
at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#24 0x00007f0393920296 in
mozilla::detail::ProxyRunnable<mozilla::MozPromise<mozilla::ipc::LaunchResults,
mozilla::ipc::LaunchError, false>,
RefPtr<mozilla::MozPromise<mozilla::ipc::LaunchResults,
mozilla::ipc::LaunchError, false> > (mozilla::ipc::BaseProcessLauncher::*)(),
mozilla::ipc::BaseProcessLauncher>::Run() ()
at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#25 0x00007f0392db38f0 in mozilla::TaskQueue::Runner::Run() () at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#26 0x00007f0392d978f5 in nsThread::ProcessNextEvent(bool, bool*) () at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#27 0x00007f0392d77130 in NS_ProcessNextEvent(nsIThread*, bool) () at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#28 0x00007f03939554cd in
mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*)
()
at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#29 0x00007f0393891ecd in MessageLoop::Run() () at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#30 0x00007f0392dbc45a in nsThread::ThreadFunc(void*) () at
/home/slyfox/tmp/portage/www-client/firefox-82.0/work/firefox_build/instrumented/dist/firefox/libxul.so
#31 0x00007f03a8adf880 in _pt_root () at /usr/lib64/libnspr4.so
#32 0x00007f03a9094e6e in start_thread (arg=0x7f0372755640) at
pthread_create.c:463
#33 0x00007f03a8d2ed2f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
