Kris Kennaway 2017a7cdfe Add a new "non-portable" mutex type, PTHREAD_MUTEX_ADAPTIVE_NP. This ... is also implemented in glibc and is used by a number of existing applications (mysql, firefox, etc). This mutex type is a default mutex with the additional property that it spins briefly when attempting to acquire a contested lock, doing trylock operations in userland before entering the kernel to block if eventually unsuccessful. The expectation is that applications requesting this mutex type know that the mutex is likely to be only held for very brief periods, so it is faster to spin in userland and probably succeed in acquiring the mutex, than to enter the kernel and sleep, only to be woken up almost immediately. This can help significantly in certain cases when pthread mutexes are heavily contended and held for brief durations (such as mysql). Spin up to 200 times before entering the kernel, which represents only a few us on modern CPUs. No performance degradation was observed with this value and it is sufficient to avoid a large performance drop in mysql performance in the heavily contended pthread mutex case. The libkse implementation is a NOP. Reviewed by: jeff MFC after: 3 days		2007-10-29 21:01:47 +00:00
..
arpa	Remove old prototypes for addr2ascii() and ascii2addr(), functions which no	2007-08-24 20:25:52 +00:00
gssapi	Add a new extensible GSS-API layer which can support GSS-API plugins,	2005-12-29 14:40:22 +00:00
protocols	Update the dump program to save extended attributes. Update	2007-02-26 08:15:56 +00:00
rpc	Move rpc/types.h under sys/, as this is used by ZFS kernel module.	2007-04-10 22:10:16 +00:00
rpcsvc	Fix ypwhich -m. This should be MFC'ed back at least as far as RELENG_5.	2005-12-06 02:01:06 +00:00
_ctype.h	Micro-optimization of prev. commit, change	2007-10-27 22:32:27 +00:00
a.out.h	Adjust the system endian and a.out headers to be more MI and cross-building	2004-06-22 17:05:39 +00:00
ar.h	Attempt to improve application portability by marking `struct ar_hdr'	2006-11-13 04:28:29 +00:00
assert.h
bitstring.h	Finish the repocopy of bitstring.h to sys so it can be used	2003-06-13 19:40:13 +00:00
complex.h	Stop defining '_Complex' in a C99 environment, it is supposed to be a keyword.	2004-08-14 18:03:21 +00:00
cpio.h
ctype.h	The problem is: currently our single byte ctype(3) functions are broken	2007-10-13 16:28:22 +00:00
db.h
dirent.h	Change the definition of NULL on ia64 (for LP64 compilations) from	2003-12-07 21:10:06 +00:00
dlfcn.h	Implement ELF symbol versioning using GNU semantics. This code aims	2005-12-18 19:43:33 +00:00
elf-hints.h
elf.h	Include the Solaris compatibility definions iff _SOLARIS_C_SOURCE is defined.	2006-10-04 07:25:55 +00:00
err.h
fmtmsg.h
fnmatch.h	Now I understand what Bruce was getting at - -1 can be parsed as two	2003-12-18 10:41:39 +00:00
fstab.h	- Add setfstab() and getfstab().	2003-04-07 12:55:00 +00:00
fts.h	Introduce new field 'fts_bignum' which is 64bit long and will allow to	2005-01-07 00:06:20 +00:00
ftw.h	Replace the current implementations of ftw() and nftw() with the OpenBSD	2004-08-24 13:00:55 +00:00
getopt.h	Add getopt_long_only()	2004-02-24 08:09:20 +00:00
glob.h	Add size_t declaration	2006-05-22 05:57:39 +00:00
grp.h	= Implement thread-safe versions of the getpwent(3) and getgrent(3)	2003-04-17 14:15:26 +00:00
gssapi.h	Add a new extensible GSS-API layer which can support GSS-API plugins,	2005-12-29 14:40:22 +00:00
hesiod.h
histedit.h	Use tabs after #define.	2007-06-11 06:25:19 +00:00
ieeefp.h	o Move the contents of <machine/floatingpoint.h> over to	2003-01-19 06:01:33 +00:00
ifaddrs.h	Add the userland part of the NET_RT_IFMALIST sysctl MIB. A new function,	2003-11-14 18:53:22 +00:00
inttypes.h
iso646.h
kenv.h	Fix prototype to match the code and documentation.	2005-11-24 07:20:26 +00:00
langinfo.h
libgen.h
limits.h	Deprecate machine/limits.h in favor of new sys/limits.h.	2003-04-29 13:36:06 +00:00
link.h
locale.h	Change the definition of NULL on ia64 (for LP64 compilations) from	2003-12-07 21:10:06 +00:00
Makefile	Install the forgotten /usr/include/geom/multipath/ header.	2007-10-01 18:07:29 +00:00
malloc_np.h	Add __{BEGIN,END}_DECLS macros, so that function prototypes remain	2006-06-30 20:57:41 +00:00
malloc.h
memory.h
monetary.h
mpool.h
mqueue.h	Add function __mq_oshandle() to get file handle of a mqueue.	2007-01-06 11:30:04 +00:00
ndbm.h
netconfig.h
netdb.h	Fix gethostbyaddr() prototype to conform to IEEE Std 1003.1 on 64 bit	2006-05-21 11:27:28 +00:00
nl_types.h	Analogous to __printflike and __scanflike, add the macro __format_arg which	2006-01-26 20:53:40 +00:00
nlist.h
nss.h	It was reported that when using nss_ldap, getgrent(3) would behave	2004-01-09 13:43:49 +00:00
nsswitch.h	- Extend the nsswitch to support Services, Protocols and Rpc	2006-04-28 12:03:38 +00:00
paths.h	Add _PATH_FWMEM for libkvm.	2007-06-11 02:21:18 +00:00
printf.h	Add nested include of <wchar.h>	2006-03-02 10:01:52 +00:00
proc_service.h	Introduce a new proc service routine ps_linfo() to get LWP info.	2006-02-07 02:29:55 +00:00
pthread_np.h	Remove 3rd clause and renumber after getting permission from the	2007-10-29 00:31:54 +00:00
pthread.h	Add a new "non-portable" mutex type, PTHREAD_MUTEX_ADAPTIVE_NP. This	2007-10-29 21:01:47 +00:00
pwd.h	Correct a typo in the definition of _PW_VERSION_MASK. This macro is	2005-01-26 17:26:54 +00:00
ranlib.h
readpassphrase.h
regex.h	Add a new error code, REG_ILLSEQ, to indicate that a regular expression	2004-07-12 06:07:26 +00:00
regexp.h
res_update.h	Merge BIND 9.4.1 into main chunk.	2007-06-03 17:20:27 +00:00
resolv.h	Merge BIND 9.4.1 into main chunk.	2007-06-03 17:20:27 +00:00
runetype.h	Prefix the names of members of _RuneLocale and its sub-structures	2004-06-23 07:01:44 +00:00
search.h
setjmp.h
sgtty.h
signal.h	Use __pid_t instead of pid_t for sigqueue as other functions.	2005-10-16 22:23:03 +00:00
stab.h
stdbool.h	The Intel C/C++ compiler doesn't require a typedef for _Bool when compiling	2005-02-19 13:47:33 +00:00
stddef.h	Change the definition of NULL on ia64 (for LP64 compilations) from	2003-12-07 21:10:06 +00:00
stdio.h	- Remove SEEK_DATA and SEEK_HOLE from stdio.h, they don't belong here.	2007-04-07 16:02:30 +00:00
stdlib.h	Significantly reduce the memory leak as noted in BUGS section for	2007-07-04 00:00:41 +00:00
string.h	Revert last revision, strmode() should be moved to <unistd.h> to be	2005-11-24 08:30:44 +00:00
stringlist.h	Sync with NetBSD -- sl_add() now returns an int.	2003-01-19 01:16:01 +00:00
strings.h	Add __pure and __pure2 where appropriate.	2004-07-23 07:13:35 +00:00
sysexits.h
tar.h
tgmath.h	Properly parenthesize the __tg_is_complex() macro by moving a closing	2007-02-02 18:30:23 +00:00
time.h	Copy the new CLOCK_ defines from sys/time.h for SUSv3 compatibility.	2006-04-15 03:08:55 +00:00
timeconv.h
timers.h
ttyent.h
ulimit.h	No need to support UL_GETSIZE and UL_SETSIZE anymore; they are about to be	2003-01-08 01:18:13 +00:00
unistd.h	Forgot to commit this file: add definition for _SC_PHYS_PAGES.	2006-12-14 21:42:03 +00:00
utime.h
utmp.h
uuid.h	Constify arguments.	2005-01-03 02:56:15 +00:00
varargs.h	Add a new machine independent varargs.h and use it as a central place	2003-09-01 03:28:25 +00:00
vis.h	Add a new flag to vis(3): VIS_GLOB which encodes the glob(3) magic	2003-10-30 10:40:49 +00:00
wchar.h	Add an implementation of the semi-standard wcsdup() function, as found	2005-08-13 05:54:33 +00:00
wctype.h	Back out iswascii change from prev. commit, iswascii was right,	2007-10-14 10:23:54 +00:00
wordexp.h	Fix typo: WRDE_DOOFS -> WRDE_DOOFFS.	2004-06-30 13:55:08 +00:00