src/lib/libc/include/libc_private.h, branch releng/14.0

libc: export pthread_getname_np stub

2023-08-20T22:44:17+00:00

pthread_getname_np needs to be provided by libc in order to import
jemalloc 5.3.0.

A stub implementation for libc pthread_getname_np() is added for
_pthread_stubs.c, which always reports empty name for the main thread.

Internal _pthread_getname_np() is not exported, but provided for libc
own use.

Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D41461

Remove $FreeBSD$: two-line .h pattern

2023-08-16T17:54:16+00:00

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

libc: move declaration of 'char **environ' to common private header

2023-03-11T22:50:04+00:00

Suggested by:	imp
Reviewed by:	markj
Tested by:	markj (aarch64)
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
Differential revision:	https://reviews.freebsd.org/D37220

csu: move common code to libc

2023-03-11T22:50:03+00:00

Why? Most trivial point, it shaves around 600 bytes from the dynamic
binaries on amd64. Less trivial, the removed code is no longer part of
the ABI, and we can ship updates to it with libc updates. Right now most
of the csu is linked into the binaries and require us to do somewhat
tricky ABI compat when it needs to change. For instance, the init_array
change would be much simpler and does not require note tagging if we
have init calling code in libc.

This could be improved more, by splitting dynamic and static
initialization. For instance, &_DYNAMIC tests can be removed then.
Such change, nonetheless, would require building libc three times.
I left this for later, after this change stabilizes, if ever.

Reviewed by:	markj
Discussed with:	jrtc27 (some objections, see the review), imp
Tested by:	markj (aarch64)
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
Differential revision:	https://reviews.freebsd.org/D37220

cpuset: Add compat shim to the sched_affinity functions

2023-02-15T09:23:15+00:00

To allow to run a newer world on a pre-1400079 kernel a compat shims to
the sched_affinity functions has beed added.

Reported by:		antoine
Tested by:		antoine
Reviewed by:		kib
Differential revision:	https://reviews.freebsd.org/D38555
MFC after:		3 days

libc: Remove _get_tp() and _set_tp().

2021-12-09T21:23:26+00:00

Their uses have been replaced by _tcb_get() and _tcb_set() from
.

Reviewed by:	kib, jrtc27
Sponsored by:	The University of Cambridge, Google Inc.
Differential Revision:	https://reviews.freebsd.org/D33354

Add sched_getcpu()

2021-11-10T19:18:54+00:00

for compatibility with Linux.

Reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D32901

libc: add _get_tp() private function

2021-04-09T20:46:24+00:00

which returns pointer to tcb

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D29623

libthr: wrap pdfork(2), same as fork(2).

2021-01-11T20:59:52+00:00

Without wrapping, rtld services and malloc(3) are not guaranteed
to operate correctly in the forked child.

Reviewed by:	markj
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D28088

Add eventfd(3) wrappers to libc.

2020-12-27T10:57:26+00:00

eventfd_read/write one-liners are from musl libc.

Submitted by:   greg@unrelenting.technology
Reviewed by:    markj (previous version)
MFC after:      2 weeks
Differential Revision:  https://reviews.freebsd.org/D26668