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| author | Florian Weimer <fweimer@redhat.com> | 2020-05-20 15:40:35 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2020-07-06 11:15:58 +0200 |
| commit | 706ad1e7af37be1d25fc2359bda006d31fe0d11b (patch) | |
| tree | d06e6a96c1d319a1d27fa6b6e87cfadf8bd6ef08 /sysdeps/unix/sysv/linux/powerpc | |
| parent | 8f4632deb3545b2949cec5454afc3cb21a0024ea (diff) | |
| download | glibc-706ad1e7af37be1d25fc2359bda006d31fe0d11b.tar glibc-706ad1e7af37be1d25fc2359bda006d31fe0d11b.tar.gz glibc-706ad1e7af37be1d25fc2359bda006d31fe0d11b.tar.bz2 glibc-706ad1e7af37be1d25fc2359bda006d31fe0d11b.zip | |
Add the __libc_single_threaded variable
The variable is placed in libc.so, and it can be true only in
an outer libc, not libcs loaded via dlmopen or static dlopen.
Since thread creation from inner namespaces does not work,
pthread_create can update __libc_single_threaded directly.
Using __libc_early_init and its initial flag, implementation of this
variable is very straightforward. A future version may reset the flag
during fork (but not in an inner namespace), or after joining all
threads except one.
Reviewed-by: DJ Delorie <dj@redhat.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc')
4 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist index 77309e8044..3de2243b63 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist @@ -2191,6 +2191,7 @@ GLIBC_2.30 getdents64 F GLIBC_2.30 gettid F GLIBC_2.30 tgkill F GLIBC_2.30 twalk_r F +GLIBC_2.32 __libc_single_threaded D 0x1 GLIBC_2.32 __rseq_abi T 0x20 GLIBC_2.32 pthread_attr_getsigmask_np F GLIBC_2.32 pthread_attr_setaffinity_np F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist index 84da7446ca..abf8fa58a1 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist @@ -2224,6 +2224,7 @@ GLIBC_2.30 getdents64 F GLIBC_2.30 gettid F GLIBC_2.30 tgkill F GLIBC_2.30 twalk_r F +GLIBC_2.32 __libc_single_threaded D 0x1 GLIBC_2.32 __rseq_abi T 0x20 GLIBC_2.32 pthread_attr_getsigmask_np F GLIBC_2.32 pthread_attr_setaffinity_np F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist index 219316b5f4..c82911c9ef 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist @@ -2054,6 +2054,7 @@ GLIBC_2.30 getdents64 F GLIBC_2.30 gettid F GLIBC_2.30 tgkill F GLIBC_2.30 twalk_r F +GLIBC_2.32 __libc_single_threaded D 0x1 GLIBC_2.32 __rseq_abi T 0x20 GLIBC_2.32 pthread_attr_getsigmask_np F GLIBC_2.32 pthread_attr_setaffinity_np F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist index 05c99997a3..f64c315a39 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist @@ -2279,6 +2279,7 @@ GLIBC_2.32 __isoc99_vsscanfieee128 F GLIBC_2.32 __isoc99_vswscanfieee128 F GLIBC_2.32 __isoc99_vwscanfieee128 F GLIBC_2.32 __isoc99_wscanfieee128 F +GLIBC_2.32 __libc_single_threaded D 0x1 GLIBC_2.32 __obstack_printf_chkieee128 F GLIBC_2.32 __obstack_printfieee128 F GLIBC_2.32 __obstack_vprintf_chkieee128 F |