Commit Graph

20 Commits

Author SHA1 Message Date
Konstantin Belousov
8495e8b1e9 Fix known issues which blow up the process after dlopen("libthr.so")
(or loading a dso linked to libthr.so into process which was not
linked against threading library).

- Remove libthr interposers of the libc functions, including
  __error(). Instead, functions calls are indirected through the
  interposing table, similar to how pthread stubs in libc are already
  done.  Libc by default points either to syscall trampolines or to
  existing libc implementations.  On libthr load, libthr rewrites the
  pointers to the cancellable implementations already in libthr.  The
  interposition table is separate from pthreads stubs indirection
  table to not pull pthreads stubs into static binaries.

- Postpone the malloc(3) internal mutexes initialization until libthr
  is loaded.  This avoids recursion between calloc(3) and static
  pthread_mutex_t initialization.

- Reinstall signal handlers with wrapper on libthr load.  The
  _rtld_is_dlopened(3) is used to avoid useless calls to sigaction(2)
  when libthr is statically referenced from the main binary.

In the process, fix openat(2), swapcontext(2) and setcontext(2)
interposing.  The libc symbols were exported at different versions
than libthr interposers.  Export both libc and libthr versions from
libc now, with default set to the higher version from libthr.

Remove unused and disconnected swapcontext(3) userspace implementation
from libc/gen.

No objections from:	deischen
Tested by:	pho, antoine (exp-run) (previous versions)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-01-03 18:38:46 +00:00
Jason Evans
2fff27f84c Update jemalloc to version 3.6.0. 2014-03-31 17:04:04 +00:00
Jason Evans
706d9bd159 Update jemalloc to version 3.5.1. 2014-02-26 02:36:59 +00:00
Jason Evans
f921d10f48 Update jemalloc to version 3.5.0. 2014-01-23 02:47:36 +00:00
Jason Evans
2b06b2013c Update jemalloc to version 3.4.1. 2013-10-21 05:10:46 +00:00
Jason Evans
f8ca2db1f8 Update jemalloc to version 3.4.0. 2013-06-03 14:36:28 +00:00
Marcel Moolenaar
9dfba391d6 Make the malloc(3) family of functions weak and make their non-weak
implementations visible for use by applications. The functions $F that
are now weak symbols are:
	allocm, calloc, dallocm, free, malloc, malloc_usable_size,
	nallocm, posix_memalign, rallocm, realloc, sallocm

The non-weak implementations of $F are exported as __$F.

Submitted by:	stevek@juniper.net
Reviewed by:	jasone@, kib@
Approved by:	jasone@ (jemalloc)
Obtained from:	juniper Networks, Inc
2013-05-25 18:59:11 +00:00
Jason Evans
70fabd840d Update list of ports required for importing jemalloc. 2013-01-24 03:33:15 +00:00
Jason Evans
88ad2f8dcc Import jemalloc 3.3.0. This reduces zeroed memory validation overhead for
non-MALLOC_PRODUCTION builds.
2013-01-24 03:08:37 +00:00
Jason Evans
82872ac086 Import jemalloc 3.2.0. 2012-11-10 01:46:13 +00:00
Dimitry Andric
5948d40700 Since our clang now supports the tls_model attribute, remove the
workaround for it in jemalloc_FreeBSD.h.

Reviewed by:	jasone
2012-08-23 17:58:22 +00:00
Jason Evans
edaa25bdae Fix config_lazy_lock so that thread caching isn't used for
single-threaded applications.
2012-05-13 01:33:28 +00:00
Jason Evans
35dad07381 Import jemalloc 3.0.0. This fixes memory zeroing bugs that manifested as
jemalloc assertion failures for debug builds, or as calloc() sometimes
returning non-zeroed memory for production builds.
2012-05-12 05:26:49 +00:00
Jason Evans
e722f8f8ac Import jemalloc 37b6f95dcd866f51c91488531a2efc3ed4c2b754 (dev branch,
prior to 3.0.0 release).  This version is likely very close to what will be
3.0.0.
2012-05-10 18:29:40 +00:00
Dimitry Andric
4fdb8d2aae Work around llvm PR 12623, which makes variables declared with .symver
sometimes disappear from the resulting object file, if compiled with
clang.  In particular, this can lead to errors when building world with
clang and -g, similar to:

  /usr/obj/usr/src/tmp/usr/lib/libc.so: undefined reference to `_malloc_options'

Reported by:	Conrad J. Sabatier <conrads@.no.cox.net>
Reviewed by:	jasone
2012-04-24 18:41:17 +00:00
Jayachandran C.
79656e93c2 jemalloc: pointer size definition for 64-bit mips platforms
LG_SIZEOF_PTR has to be defined as 3 when jemalloc is compiled for
64 bit platforms.

Reviewed by:	juli
Approved by:	jasone
2012-04-24 11:42:48 +00:00
Jason Evans
4bcb1430a8 Import jemalloc a8f8d7540d66ddee7337db80c92890916e1063ca (dev branch,
prior to 3.0.0 release).  This fixes several bugs related to memory
initialization.

Mangle __jemalloc_a0{malloc,calloc,free}() just like all the other
library-internal symbols in jemalloc, and adjust the tls allocation code
in libc to use the mangled names.
2012-04-22 08:49:13 +00:00
Jason Evans
8ed34ab00d Import jemalloc 606f1fdc3cdbc700717133ca56685313caea24bb (dev branch,
prior to 3.0.0 release), and mangle internal symbols.
2012-04-21 15:09:22 +00:00
Jason Evans
c92c6224f9 Import jemalloc b57d3ec571c6551231be62b7bf92c084a8c8291c (dev branch,
prior to 3.0.0 release), which supports atomic operations based on atomic(9).
This should fix build failures for several platforms.
2012-04-17 22:05:55 +00:00
Jason Evans
a4bd5210d5 Import jemalloc 9ef7f5dc34ff02f50d401e41c8d9a4a928e7c2aa (dev branch,
prior to 3.0.0 release) as contrib/jemalloc, and integrate it into libc.
The code being imported by this commit diverged from
lib/libc/stdlib/malloc.c in March 2010, which means that a portion of
the jemalloc 1.0.0 ChangeLog entries are relevant, as are the entries
for all subsequent releases.
2012-04-17 07:22:14 +00:00