John Baldwin 53e1ffbbce The current POSIX semaphore implementation stores the _has_waiters flag ... in a separate word from the _count. This does not permit both items to be updated atomically in a portable manner. As a result, sem_post() must always perform a system call to safely clear _has_waiters. This change removes the _has_waiters field and instead uses the high bit of _count as the _has_waiters flag. A new umtx object type (_usem2) and two new umtx operations are added (SEM_WAIT2 and SEM_WAKE2) to implement these semantics. The older operations are still supported under the COMPAT_FREEBSD9/10 options. The POSIX semaphore API in libc has been updated to use the new implementation. Note that the new implementation is not compatible with the previous implementation. However, this only affects static binaries (which cannot be helped by symbol versioning). Binaries using a dynamic libc will continue to work fine. SEM_MAGIC has been bumped so that mismatched binaries will error rather than corrupting a shared semaphore. In addition, a padding field has been added to sem_t so that it remains the same size. Differential Revision: https://reviews.freebsd.org/D961 Reported by: adrian Reviewed by: kib, jilles (earlier version) Sponsored by: Norse		2014-10-24 20:02:44 +00:00
..
alias
apply
ar	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
asa
at	Sigh, remove a line that needs to be removed along with previous commit.	2014-09-29 21:54:46 +00:00
atm
awk
banner
basename	Integrate usr.sbin/basename/tests from NetBSD into atf/kyua	2014-10-09 00:41:42 +00:00
bc	Convert LIBCURSES to LIBNCURSES to fix "make checkdpadd"	2014-08-26 09:10:28 +00:00
biff
bluetooth	Change the code to use the openpty(3) API which uses the pts(4) driver	2014-10-23 15:16:40 +00:00
bmake	Update to bmake-20140620	2014-07-08 22:27:50 +00:00
brandelf	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
bsdiff	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
bzip2
bzip2recover
c89
c99
calendar	Add myself (jch) to calendar.freebsd and committers-src.dot	2014-09-24 22:31:40 +00:00
cap_mkdb
catman
chat
checknr
chkey
chpass
cksum
clang	Convert LIBCURSES to LIBNCURSES to fix "make checkdpadd"	2014-08-26 09:10:28 +00:00
cmp	Integrate usr.bin/cmp/tests from NetBSD into atf/kyua	2014-10-09 00:50:33 +00:00
col	Fix to col when printing half-line feeds w/ -f option...	2014-10-17 21:09:03 +00:00
colcrt
colldef
colrm
column
comm
compile_et	Revert r267233 for now. PIE support needs to be reworked.	2014-08-19 15:04:32 +00:00
compress
cpio
cpuset	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
csplit
ctags
ctlstat	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
cut	Integrate usr.bin/cut/tests from NetBSD into atf/kyua	2014-10-09 01:46:31 +00:00
dc
dirname	Integrate usr.bin/dirname/tests from NetBSD into atf/kyua	2014-10-09 00:55:04 +00:00
drill	Rework privatelib/internallib	2014-08-06 22:17:26 +00:00
dtc	dtc: ignore lines starting with #.	2014-06-10 06:16:34 +00:00
du
ee	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
elf2aout	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
elfdump	Fix a typo.	2014-09-16 22:26:01 +00:00
enigma
env
expand
false
fetch	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
file	MFV r267843: update file/libmagic to 5.19.	2014-06-26 06:03:39 +00:00
file2c
find	Correct scale factor for T terabyte suffix	2014-10-08 17:40:58 +00:00
finger
fmt
fold
from
fstat	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
fsync
ftp	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
gcore	Remove an unsed variable.	2014-07-31 03:36:03 +00:00
gencat
getconf	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
getent
getopt
gprof	Remove ia64.	2014-07-07 00:27:09 +00:00
grep	Integrate usr.bin/grep/tests from NetBSD into atf/kyua	2014-10-09 01:53:23 +00:00
gzip	Sync with NetBSD.	2014-10-23 01:22:29 +00:00
head
hesinfo
hexdump
host	Add host.1 to CLEANFILES.	2014-08-26 19:36:47 +00:00
iconv	- Make invalids variable local to do_conv such that it prints the number	2014-06-13 08:44:03 +00:00
id
indent
ipcrm
ipcs	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
iscsictl	Whitespace fixes.	2014-10-22 09:17:17 +00:00
join
jot
kdump	Decode the arguments passed to _umtx_op(). In particular, decode the	2014-10-13 16:37:06 +00:00
keylogin
keylogout
killall
ktrace	Clarify that the -c argument clears the list of tracepoints specified by	2014-08-26 21:21:57 +00:00
ktrdump	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
lam
last
lastcomm
ldd	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
leave
less	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
lessecho
lesskey
lex
limits
locale
locate
lock	Missed comma.	2014-08-26 11:04:51 +00:00
lockf	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
logger
login	Remove LOG_ODELAY because it does nothing.	2014-08-17 19:06:26 +00:00
logins	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
logname
look	look: implement long options	2014-07-04 04:47:29 +00:00
lorder
lsvfs
lzmainfo
m4	Avoid name shadowing to fix build under powerpc64.	2014-08-07 14:26:44 +00:00
mail	Always check the limits of array index variables before using them.	2014-08-21 02:40:33 +00:00
make	When producing fmake(1), `make clean' should remove fmake.1 (a copy of	2014-07-23 23:01:54 +00:00
makewhatis
man	Replace the macros used in the previous man(1) commit with literal text,	2014-09-26 11:48:29 +00:00
mandoc	Revert r267233 for now. PIE support needs to be reworked.	2014-08-19 15:04:32 +00:00
mesg
minigzip
ministat
mkcsmapper	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
mkcsmapper_static
mkdep
mkesdb	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
mkesdb_static
mkfifo
mkimg	Update baseline files for EBR, MBR and PC98 now that mkimg fills in	2014-10-03 20:54:35 +00:00
mklocale
mkstr
mktemp
mkulzma	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
mkuzip	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
msgs	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
mt
nc
ncal	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
netstat	Add the ability to set `prefer_source' flag to an IPv6 address.	2014-09-09 10:52:50 +00:00
newgrp
newkey
nfsstat
nice
nl
nohup
opieinfo
opiekey	Link otp-sha1 to match real challenge prompt, not otp-sha	2014-08-11 14:37:57 +00:00
opiepasswd
pagesize
pamtest
passwd
paste
patch	patch: add dry-run alias for compatibility with other implementations.	2014-06-15 16:38:17 +00:00
pathchk
perror
pr
printenv
printf	printf: Install tests/regress.missingpos1.out, fixing tests.	2014-06-01 13:33:22 +00:00
procstat	In "procstat -v" (VM), spell out 'FL' to 'FLAG' since there are two extra	2014-07-20 20:11:34 +00:00
protect
quota
rctl	Fix typo.	2014-09-11 19:54:30 +00:00
renice
rev
revoke	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
rlogin
rpcgen	Fix some rpcgen sample file issues.	2014-06-06 17:38:37 +00:00
rpcinfo
rs
rsh
rup
ruptime
rusers
rwall
rwho
script
sed	sed(1): Don't force a newline on last line, if input stream doesn't have one	2014-08-08 17:29:01 +00:00
send-pr	Add a stub send-pr that simply points people towards the online support	2014-06-17 12:59:03 +00:00
seq
setchannel
shar
showmount	Use mount protocol version 3 by default for showmount and umount.	2014-08-16 14:56:11 +00:00
smbutil
sockstat	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
sort	Make sure to not skip any argument when converting from deprecated	2014-10-02 06:29:49 +00:00
split
ssh-copy-id	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
stat	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
stdbuf
su
svn	Add svnlite.1 to CLEANFILES.	2014-08-26 20:40:12 +00:00
systat	Fix integer truncation in affecting systat -ifstat	2014-09-29 17:38:50 +00:00
tabs	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
tail
talk	Convert LIBCURSES to LIBNCURSES to fix "make checkdpadd"	2014-08-26 09:10:28 +00:00
tar
tcopy
tee
telnet	Revert r267233 for now. PIE support needs to be reworked.	2014-08-19 15:04:32 +00:00
tests
tftp	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
time
timeout	Improve timeout(1) man page	2014-07-18 22:56:59 +00:00
tip
top	Cap the percent CPU of individual threads at 100% to fix some of the	2014-06-20 19:54:23 +00:00
touch
tput	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
tr
true
truncate	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
truss	The current POSIX semaphore implementation stores the _has_waiters flag	2014-10-24 20:02:44 +00:00
tset	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
tsort
tty
ul	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
uname
unexpand
unifdef	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
uniq
units	Fix structure of new tests (r268794) for usr.bin/units.	2014-07-25 01:29:22 +00:00
unvis
unzip	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
usbhidaction
usbhidctl
users	Unbreak the build by re-enabling exceptions.	2014-07-14 12:24:38 +00:00
uudecode
uuencode
vacation	Revert r267233 for now. PIE support needs to be reworked.	2014-08-19 15:04:32 +00:00
vgrind
vi	Replace all uses of libncurses and libtermcap with their wide character	2014-07-17 18:24:34 +00:00
vis
vmstat	Fix formatting of vmstat (1) so that it looks cleaner on standard 80	2014-10-24 04:01:14 +00:00
vtfontcvt	vtfontcvt will first ship in FreeBSD 10.1	2014-07-24 15:16:03 +00:00
w	don't reinvent the wheel: rely on basename(3)	2014-10-08 05:04:31 +00:00
wall
wc
what
whereis
which	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
who
whois	Introduce $RA_SERVER to set default whois server.	2014-06-25 15:39:08 +00:00
write
xargs
xinstall	install: re-check failed mkdir for EEXIST	2014-09-23 11:41:09 +00:00
xlint	Remove ia64.	2014-07-07 00:27:09 +00:00
xo	Hook xo(1) to the build -- it's like echo, but uses libxo to	2014-10-23 23:16:21 +00:00
xstr
xz
xzdec
yacc	Complete the usr.bin/yacc kyua integration work I originally	2014-08-12 17:51:26 +00:00
yes	mdoc: drop the trailing dot from the xref list.	2014-06-05 08:20:14 +00:00
ypcat	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
ypmatch	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
ypwhich
Makefile	Hook xo(1) to the build -- it's like echo, but uses libxo to	2014-10-23 23:16:21 +00:00
Makefile.amd64
Makefile.arm
Makefile.i386
Makefile.inc
Makefile.powerpc
Makefile.sparc64