commit 188759bb documented the intent
to allow recursive dlopen based on tracking ctor_visitor, but used a
kernel tid rather than the pthread_t to identify the caller. as a
result, it would not behave as intended under fork by a ctor, where
the child tid would not match.

Test:libc-test/src/function/exit.c
Issue:I7F2LR
Signed-off-by: Nfangting <fangting12@huawei.com>

2. Optimize syscall_cp 2 syscall because pthread_cancel not available on ohos

Issue:#I76K30

Test: libc test && benchmark
Signed-off-by: Nhaotuo <haotuo@huawei.com>
Change-Id: I9fff69b3d51337fbf2f1545ea47af871b544d9cc

Use atexit to register some callback from dso, but there is no
unregister interface. After this dso closed, this callback in
atexit callback chain is invalidate. This workround will save
the dso that the callback come from, then when dso closed, the
relative callbacks would cleared.

Issue： #I6UEZQ
Test：register atexit cb, then dlclose this dso
Signed-off-by: Nhhj <huanghuijin@huawei.com>
Change-Id: I0dfc15366dd51bbe677b9700131fbaf57622499c

Add malloc_info, malloc_stats_print, mallinfo2, malloc_iterate, malloc_enable, malloc_disable, malloc_backtrace, mallopt to musl memory allocator
Signed-off-by: Nolefirenque <olefirenko.egor@huawei-partners.com>

Signed-off-by: Nmaweiye <maweiye@huawei.com>

Add malloc_info, malloc_stats_print, mallinfo2, malloc_iterate, malloc_enable, malloc_disable, malloc_backtrace, mallopt to musl memory allocator
Signed-off-by: NMaxim Polyakov <polyakov.maksim@huawei.com>

Add tests for malloc_info, malloc_stats_print, mallinfo2, malloc_iterate, malloc_enable, malloc_disable, mallopt, malloc_backtrace. Implemented by Olefirenko Egor, Polyakov Maxim, Frolikov Boris
Signed-off-by: Nsosnin-vladimir <sosninvladimir@huawei.com>

回退 'Pull Request !516 : Add malloc_info, malloc_stats_print, mallinfo2, malloc_iterate, malloc_enable, malloc_disable, malloc_backtrace, mallopt to musl memory allocator rebased 2'

Add malloc_info, malloc_stats_print, mallinfo2, malloc_iterate, malloc_enable, malloc_disable, mallopt, malloc_backtrace to musl default allocator
Signed-off-by: NMaxim Polyakov <polyakov.maksim@huawei.com>
Change-Id: I9300684afd69750973a3b9046aeaaade72ee88fe

Signed-off-by: Nfangting <fangting10@huawei.com>

Signed-off-by: Nfangting <fangting10@huawei.com>

This reverts commit fd8c6da6, reversing
changes made to acdab8e8.
Signed-off-by: Nyangwenjun <yangwenjun13@huawei.com>

Revert "!268 Dynamic linker supports namespace mechanism"

This reverts commit acdab8e8, reversing
changes made to 412ca9eb.
Signed-off-by: Njiangkuaixue <jiangchenzhou@huawei.com>

Signed-off-by: Nyangwenjun <yangwenjun13@huawei.com>

Signed-off-by: Ncaifuzhou <caifuzhou@huawei.com>

Signed-off-by: Ncaifuzhou <caifuzhou@huawei.com>

Signed-off-by: caifuzhou <504631861@qq.com>

Signed-off-by: caifuzhou <504631861@qq.com>

Signed-off-by: Nmaweiye <maweiye@huawei.com>