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glibc/include
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Adhemerval Zanella f4c142bb9f arm: Use _dl_find_object on __gnu_Unwind_Find_exidx (BZ 31405) 
Instead of __dl_iterate_phdr. On ARM dlfo_eh_frame/dlfo_eh_count
maps to PT_ARM_EXIDX vaddr start / length.

On a Neoverse N1 machine with 160 cores, the following program:

  $ cat test.c
  #include <stdlib.h>
  #include <pthread.h>
  #include <assert.h>

  enum {
    niter = 1024,
    ntimes = 128,
  };

  static void *
  tf (void *arg)
  {
    int a = (int) arg;

    for (int i = 0; i < niter; i++)
      {
        void *p[ntimes];
        for (int j = 0; j < ntimes; j++)
  	p[j] = malloc (a * 128);
        for (int j = 0; j < ntimes; j++)
  	free (p[j]);
      }

    return NULL;
  }

  int main (int argc, char *argv[])
  {
    enum { nthreads = 16 };
    pthread_t t[nthreads];

    for (int i = 0; i < nthreads; i ++)
      assert (pthread_create (&t[i], NULL, tf, (void *) i) == 0);

    for (int i = 0; i < nthreads; i++)
      {
        void *r;
        assert (pthread_join (t[i], &r) == 0);
        assert (r == NULL);
      }

    return 0;
  }
  $ arm-linux-gnueabihf-gcc -fsanitize=address test.c -o test

Improves from ~15s to 0.5s.

Checked on arm-linux-gnueabihf.
2024-02-23 08:50:00 -03:00
..
arpa Fix all the remaining misspellings -- BZ 25337 2023-06-02 01:39:48 +00:00
bits Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
gnu Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
net Fix resolver if_* namespace (bug 17717). 2014-12-16 18:18:49 +00:00
netinet nss_files: Consolidate line parse declarations in <nss_files.h> 2020-07-21 07:33:20 +02:00
programs Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
protocols (abmon): Remove spaces. 1998-11-12 18:03:43 +00:00
rpc Handle out-of-memory case in svc_tcp.c/svc_unix.c:rendezvous_request. 2020-12-10 11:11:20 +01:00
rpcsvc Remove --enable-obsolete-nsl configure flag 2020-07-08 17:25:57 +02:00
sys Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
aio.h Linux: Move aio_suspend, aio_suspend64, __aio_suspend_time64 to libc 2021-06-25 11:55:27 +02:00
aliases.h Move 'aliases' routines from 'inet' into 'nss' 2023-10-24 12:30:59 +02:00
alloc_buffer.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
alloca.h Remove macros extend_alloca, extend_alloca_account [BZ #18023] 2018-06-27 19:20:37 +02:00
allocate_once.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ar.h Add missing header wrappers under include/ 2019-02-16 08:25:16 +01:00
argp-fmtstream.h Mark internal argp functions with attribute_hidden [BZ #18822] 2017-10-01 15:10:27 -07:00
argp.h ldbl-opt: Add argp_error and argp_failure (bug 23983) 2019-03-01 15:21:32 -03:00
argz.h Use libc_hidden_* for argz_next, __argz_next (bug 15105). 2018-02-15 21:00:02 +00:00
array_length.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
assert.h assert: Do not use stderr in libc-internal assert 2022-08-03 11:43:04 +02:00
atomic_wide_counter.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
atomic.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
byteswap.h
clone_internal.h posix: Add pidfd_spawn and pidfd_spawnp (BZ 30349) 2023-09-05 13:08:59 -03:00
complex.h float128: Add private _Float128 declarations for libm. 2017-05-15 10:23:28 -03:00
cpio.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
ctype.h Use libc_hidden_* for tolower, toupper (bug 15105). 2018-02-23 13:54:53 +00:00
des.h
dirent.h Use 64 bit time_t stat internally 2021-06-22 12:09:52 -03:00
dlfcn.h arm: Use _dl_find_object on __gnu_Unwind_Find_exidx (BZ 31405) 2024-02-23 08:50:00 -03:00
dso_handle.h Mark __dso_handle as hidden [BZ #18822] 2017-09-26 16:53:44 -07:00
elf.h elf: Refuse to dlopen PIE objects [BZ #24323] 2019-06-18 16:42:10 +02:00
endian.h Update. 2001-03-30 05:34:59 +00:00
envz.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
err.h ldbl-128ibm-compat: PLT redirects for using ldbl redirects internally 2020-03-25 14:34:23 -05:00
errno.h Remove tls.h inclusion from internal errno.h 2020-11-13 12:59:19 -03:00
error.h Mark various cold functions as __COLD 2023-05-01 19:33:21 +02:00
execinfo.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
fcntl.h Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251) 2018-06-26 13:22:53 -03:00
features-time64.h y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
features.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
fenv.h Move fenv.h soft-float inlines from fenv_private.h to include/fenv.h. 2018-09-04 19:52:06 +00:00
file_change_detection.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
filename.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
float.h Make totalorder and totalordermag functions take pointer arguments. 2019-08-15 15:18:34 +00:00
fmtmsg.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
fnmatch.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
fpu_control.h Hide internal __setfpucw function [BZ #18822] 2017-10-01 17:52:15 -07:00
fstab.h Add missing header wrappers under include/ 2019-02-16 08:25:16 +01:00
fts.h io: Add fts64 with 64-bit time_t support 2021-06-15 10:42:11 -03:00
ftw.h io: Add ftw64 with 64-bit time_t support 2021-06-15 10:42:11 -03:00
gconv.h
getopt_int.h Update. 2004-03-09 10:36:53 +00:00
getopt.h getopt: remove USE_NONOPTION_FLAGS 2017-04-07 07:45:53 -04:00
glob.h Fix extra PLT reference in libc.so due to __glob64_time64 if build with gcc 7.5 on 32bit. 2021-07-01 16:46:59 +02:00
gmp.h Apply asm redirection in gmp.h before first use 2022-11-07 10:40:21 -03:00
gnu-versions.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
grp-merge.h Remove 'grp' and merge into 'nss' and 'posix' 2023-10-24 12:30:59 +02:00
grp.h Remove 'grp' and merge into 'nss' and 'posix' 2023-10-24 12:30:59 +02:00
gshadow.h Remove 'gshadow' and merge into 'nss' 2023-10-24 12:30:59 +02:00
iconv.h Update. 1999-08-21 00:38:15 +00:00
idx.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ifaddrs.h nscd: Do not rebuild getaddrinfo (bug 30709) 2023-08-11 10:10:16 +02:00
ifreq.h Hide internal __ifreq function [BZ #18822] 2017-10-01 17:35:46 -07:00
ifunc-impl-list.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
inline-hashtab.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
intprops.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
inttypes.h Make strtoimax, strtoumax, wcstoimax, wcstoumax into aliases 2020-12-08 18:15:27 +00:00
langinfo.h Add first fixes for conformtest for POSIX2008 2012-02-26 21:32:56 -05:00
lastlog.h Add missing header wrappers under include/ 2019-02-16 08:25:16 +01:00
libc-diag.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-internal.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-pointer-arith.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-symbols.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libgen.h
libintl.h Document the internal _ and N_ macros 2020-05-06 17:35:40 +02:00
limits.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
link.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
list_t.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
list.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
locale.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
loop_unroll.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
malloc.h Simplify __malloc_initialized 2021-07-22 18:38:04 +05:30
math-narrow-eval.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math.h Redirect fma calls to __fma in libm 2021-09-15 22:57:35 +00:00
mcheck.h mcheck: Wean away from malloc hooks [BZ #23489] 2021-07-22 18:38:02 +05:30
memory.h
mntent.h Hide internal __hasmntopt function [BZ #18822] 2017-10-01 17:37:42 -07:00
monetary.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
mqueue.h Linux: Move mq_send, mq_timedsend, __mq_timedsend_time64 to libc 2021-06-25 12:21:12 +02:00
netdb.h Move 'netgroup' routines from 'inet' into 'nss' 2023-10-24 12:30:59 +02:00
netgroup.h Move 'netgroup' routines from 'inet' into 'nss' 2023-10-24 12:30:59 +02:00
nl_types.h
nss_dns.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
nss_files.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
nss.h nss: Export nscd hash function as __nss_hash [BZ #22459] 2017-11-23 14:08:11 +01:00
nsswitch.h
obstack.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
plural-exp.h Hide internal __gettextparse function [BZ #18822] 2017-10-01 17:31:05 -07:00
poll.h Update. 2000-08-21 16:02:48 +00:00
printf_buffer.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
printf.h stdio-common: Convert vfprintf and related functions to buffers 2022-12-19 18:56:54 +01:00
pthread.h Linux: Move mq_notify from librt to libc 2021-06-25 12:20:47 +02:00
pty.h login: Move libutil into libc 2021-06-30 08:43:37 +02:00
pwd.h Remove 'pwd' and merge into 'nss' 2023-10-24 12:30:59 +02:00
random-bits.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
re_comp.h Add missing header wrappers under include/ 2019-02-16 08:25:16 +01:00
regex.h Fix regex type usage 2023-05-01 09:08:59 -04:00
regexp.h Add missing header wrappers under include/ 2019-02-16 08:25:16 +01:00
register-atfork.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
resolv.h resolv: Add internal __res_binary_hnok function 2022-08-30 10:02:49 +02:00
rounding-mode.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rtld-malloc.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sched.h Add hidden prototypes for __sched_getparam, __sched_getscheduler 2020-02-20 08:57:01 +01:00
scratch_buffer.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
search.h misc: Add twalk_r function 2019-05-02 11:42:51 +02:00
set-freeres.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
setjmp.h chk: Add and fix hidden builtin definitions for *_chk 2023-08-03 22:46:48 +02:00
sgtty.h
shadow.h Remove 'shadow' and merge into 'nss' 2023-10-24 12:30:59 +02:00
shlib-compat.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
shm-directory.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
signal.h stdio: Remove the usage of $(fno-unit-at-a-time) for siglist.c 2022-05-13 10:54:41 -03:00
spawn.h posix: Use posix_spawn for wordexp 2019-10-09 17:48:41 -03:00
stab.h
stackinfo.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stap-probe.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stdbit.h Implement C23 <stdbit.h> 2024-01-03 12:07:14 +00:00
stdc-predef.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stdint.h Move inttypes.h and stdint.h to stdlib. 2019-03-13 09:42:09 -04:00
stdio_ext.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
stdio.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
stdlib.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
string.h string: Add hidden builtin definition for __strcpy_chk. 2024-02-06 09:17:04 +01:00
strings.h
struct___timeb64.h time: Add 64-bit time_t support for ftime 2020-10-27 09:54:50 -03:00
struct___timespec64.h y2038: include: Move struct __timespec64 definition to a separate file 2020-04-06 23:05:11 +02:00
struct___timeval64.h y2038: include: Move struct __timeval64 definition to a separate file 2020-05-05 19:36:25 +02:00
stubs-prologue.h * sysdeps/generic/bits/libc-tsd.h [USE___THREAD]: Conditional 2002-10-11 10:52:20 +00:00
syscall.h
sysexits.h
syslog.h
tar.h
termios.h Hide internal __tcgetattr function [BZ #18822] 2017-10-01 17:48:24 -07:00
tgmath.h Update. 1998-09-06 23:45:24 +00:00
time.h Define in_int32_t_range to check if the 64 bit time_t syscall should be used 2022-11-17 14:35:13 -03:00
ttyent.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
uchar.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
ucontext.h Update. 1999-10-12 18:17:41 +00:00
ulimit.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
unistd_ext.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
unistd.h unistd: Avoid PLT entries with _FORTIFY_SOURCE 2023-07-05 16:59:48 +02:00
utime.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
utmp.h login: Move libutil into libc 2021-06-30 08:43:37 +02:00
values.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
verify.h posix: Sync regex with gnulib 2019-11-06 09:20:52 -03:00
wait.h Add missing header wrappers under include/ 2019-02-16 08:25:16 +01:00
wchar.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
wctype.h Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
wordexp.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00