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CVS log for src/lib/libpthread/pthread_rwlock.c

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Default branch: MAIN


Revision 1.44 / (download) - annotate - [select for diffs], Sat Feb 12 14:59:32 2022 UTC (11 months, 2 weeks ago) by riastradh
Branch: MAIN
CVS Tags: netbsd-10-base, netbsd-10, HEAD
Changes since 1.43: +5 -2 lines
Diff to previous 1.43 (colored)

libpthread: Move namespacing include to top of .c files.

Stuff like libc's namespace.h, or atomic_op_namespace.h, which does
namespacing tricks like `#define atomic_cas_uint _atomic_cas_uint',
has to go at the top of each .c file.  If it goes in the middle, it
might be too late to affect the declarations, and result in compile
errors.

I tripped over this by including <sys/atomic.h> in mips
<machine/lock.h>.

(Maybe we should create a new pthread_namespace.h file for the
purpose, but this'll do for now.)

Revision 1.43 / (download) - annotate - [select for diffs], Fri Feb 11 21:40:58 2022 UTC (11 months, 2 weeks ago) by riastradh
Branch: MAIN
Changes since 1.42: +6 -6 lines
Diff to previous 1.42 (colored)

libpthread: Fix membars around rwlocks.

1. After loading self->pt_rwlocked, membar_enter() must not be
   conditional on PTHREAD__ATOMIC_IS_MEMBAR because there is no
   atomic r/m/w operation here which could imply the acquire barrier.

   (This should maybe just be a load-acquire operation, but we don't
   have atomic_load_acquire in userland at the moment -- TBD.)

2. Before storing thread->pt_rwlocked, must issue membar_exit() so
   that this is a store-release operation -- except if we had just
   done an atomic r/m/w and PTHREAD__ATOMIC_IS_MEMBAR is set, in
   which case it can be elided.

   The second membar_exit() added here might be safely hoisted out of
   the loop but I'm not sure -- needs more analysis to prove that
   would be safe.

Revision 1.42 / (download) - annotate - [select for diffs], Tue Jun 2 00:29:53 2020 UTC (2 years, 8 months ago) by joerg
Branch: MAIN
CVS Tags: cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x
Changes since 1.41: +3 -3 lines
Diff to previous 1.41 (colored)

Pass down errno when calling pthread__errorfunc after a system call.
Allow format arguments for that reason and use (v)snprintf_ss in
pthread_errorfunc to avoid race conditions and the like.

Revision 1.41 / (download) - annotate - [select for diffs], Mon Jun 1 11:44:59 2020 UTC (2 years, 8 months ago) by ad
Branch: MAIN
Changes since 1.40: +26 -32 lines
Diff to previous 1.40 (colored)

In the interests of reliability simplify waiter handling more and redo
condvars to manage the list of waiters with atomic ops.

Revision 1.40 / (download) - annotate - [select for diffs], Sat May 16 22:53:37 2020 UTC (2 years, 8 months ago) by ad
Branch: MAIN
Changes since 1.39: +4 -4 lines
Diff to previous 1.39 (colored)

- Try to eliminate a hang in "parked" I've been seeing while stress testing.
  Centralise wakeup of deferred waiters in pthread__clear_waiters() and use
  throughout libpthread.  Make fewer assumptions.  Be more conservative in
  pthread_mutex when dealing with pending waiters.

- Remove the "hint" argument everywhere since the kernel doesn't use it any
  more.

Revision 1.34.16.1 / (download) - annotate - [select for diffs], Wed Apr 8 14:07:15 2020 UTC (2 years, 9 months ago) by martin
Branch: phil-wifi
Changes since 1.34: +39 -33 lines
Diff to previous 1.34 (colored) next main 1.35 (colored)

Merge changes from current as of 20200406

Revision 1.39 / (download) - annotate - [select for diffs], Wed Feb 5 11:05:10 2020 UTC (2 years, 11 months ago) by kamil
Branch: MAIN
CVS Tags: phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, is-mlppp-base, is-mlppp
Changes since 1.38: +2 -12 lines
Diff to previous 1.38 (colored)

Retire ifdef ERRORCHECK in pthread(3)

It is enabled unconditionally since 2003 and used only for rwlocks and
spinlocks.

LLVM sanitizers make assumptions that these checks are enabled always.

Revision 1.38 / (download) - annotate - [select for diffs], Fri Jan 31 17:52:14 2020 UTC (3 years ago) by kamil
Branch: MAIN
Changes since 1.37: +29 -19 lines
Diff to previous 1.37 (colored)

Refactor libpthread checks for invalid arguments

Switch from manual functions to pthread__error().

Revision 1.34.18.1 / (download) - annotate - [select for diffs], Sun Jan 26 10:55:16 2020 UTC (3 years ago) by martin
Branch: netbsd-9
CVS Tags: netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2
Changes since 1.34: +3 -4 lines
Diff to previous 1.34 (colored) next main 1.35 (colored)

Pull up following revision(s) (requested by ad in ticket #647):

	lib/libpthread/pthread_rwlock.c: revision 1.37 (patch)
	lib/libpthread/pthread_misc.c: revision 1.16
	lib/libpthread/pthread.c: revision 1.154
	lib/libpthread/pthread_int.h: revision 1.98
	lib/libpthread/pthread_cond.c: revision 1.66
	lib/libpthread/pthread_mutex.c: revision 1.66

Rip out some very ambitious optimisations around pthread_mutex that are
don't buy much.  This stuff is hard enough to get right in the kernel let
alone userspace, and I don't trust that it's right.

Revision 1.37 / (download) - annotate - [select for diffs], Mon Jan 13 18:22:56 2020 UTC (3 years ago) by ad
Branch: MAIN
Changes since 1.36: +3 -4 lines
Diff to previous 1.36 (colored)

Rip out some very ambitious optimisations around pthread_mutex that are
don't buy much.  This stuff is hard enough to get right in the kernel let
alone userspace, and I don't trust that it's right.

Revision 1.36 / (download) - annotate - [select for diffs], Mon Dec 16 22:22:11 2019 UTC (3 years, 1 month ago) by uwe
Branch: MAIN
Changes since 1.35: +8 -5 lines
Diff to previous 1.35 (colored)

pthread__rwlock_spin - clarify the test.

It's more pedantically correct to check RW_WRITE_LOCKED before
obtaining the thread id of the owner.  And since there must be an
owner annotate the guard NULL check as unlinkely.

No functional change intended.  Ok ad@.

Revision 1.35 / (download) - annotate - [select for diffs], Sun Dec 15 23:13:33 2019 UTC (3 years, 1 month ago) by uwe
Branch: MAIN
Changes since 1.34: +6 -2 lines
Diff to previous 1.34 (colored)

_DIAGASSERT that RW_FLAGMASK bits are not set in a thread pointer.

rwlock uses lower bits of a thread pointer for flags in the lock owner
field.  Assert that the pointer is properly aligned and those bits are
actually free to use.  This may not be the case when a program uses
its own allocator that can return less aligned pointers.

Revision 1.34 / (download) - annotate - [select for diffs], Sun Jul 3 14:24:58 2016 UTC (6 years, 7 months ago) by christos
Branch: MAIN
CVS Tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20191119, phil-wifi-20190609, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RC1, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Branch point for: phil-wifi, netbsd-9
Changes since 1.33: +25 -2 lines
Diff to previous 1.33 (colored)

GSoC 2016 Charles Cui: Implement thread priority protection based on work
by Andy Doran. Also document the get/set pshared thread calls as not
implemented, and add a skeleton implementation that is disabled.
XXX: document _sched_protect(2).

Revision 1.32.20.1 / (download) - annotate - [select for diffs], Thu May 22 11:36:59 2014 UTC (8 years, 8 months ago) by yamt
Branch: yamt-pagecache
Changes since 1.32: +21 -4 lines
Diff to previous 1.32 (colored) next main 1.33 (colored)

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

Revision 1.32.26.1 / (download) - annotate - [select for diffs], Sun Jun 23 06:21:08 2013 UTC (9 years, 7 months ago) by tls
Branch: tls-maxphys
Changes since 1.32: +21 -4 lines
Diff to previous 1.32 (colored) next main 1.33 (colored)

resync from head

Revision 1.32.22.1 / (download) - annotate - [select for diffs], Mon Apr 29 01:50:18 2013 UTC (9 years, 9 months ago) by riz
Branch: netbsd-6
CVS Tags: netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1
Changes since 1.32: +21 -4 lines
Diff to previous 1.32 (colored) next main 1.33 (colored)

Pull up following revision(s) (requested by manu in ticket #869):
	lib/libpthread/pthread_rwlock.c: revision 1.33
	lib/libc/include/reentrant.h: revision 1.16
	lib/libpthread/pthread_cond.c: revision 1.59
	lib/libpthread/pthread_misc.c: revision 1.15
	lib/libc/thread-stub/thread-stub.c: revision 1.23
	lib/libpthread/pthread_cancelstub.c: revision 1.38
	lib/libpthread/pthread_specific.c: revision 1.26
	lib/libpthread/pthread_mutex.c: revision 1.56
	lib/libpthread/pthread_tsd.c: revision 1.11
	lib/libpthread/Makefile: revision 1.80
	lib/libpthread/pthread.c: revision 1.143
	lib/libpthread/pthread_int.h: revision 1.89
- Allow libpthread to be dlopened again, by providing libc stubs to
libpthread.
- Fail if the dlopened libpthread does pthread_create(). From manu@
- Discussed at length in the mailing lists; approved by core@
- This was chosen as the least intrusive patch that will provide
  the necessary functionality.
XXX: pullup to 6

Revision 1.33 / (download) - annotate - [select for diffs], Thu Mar 21 16:49:12 2013 UTC (9 years, 10 months ago) by christos
Branch: MAIN
CVS Tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, agc-symver-base, agc-symver
Changes since 1.32: +21 -4 lines
Diff to previous 1.32 (colored)

- Allow libpthread to be dlopened again, by providing libc stubs to libpthread.
- Fail if the dlopened libpthread does pthread_create(). From manu@
- Discussed at length in the mailing lists; approved by core@
- This was chosen as the least intrusive patch that will provide
  the necessary functionality.
XXX: pullup to 6

Revision 1.32.4.2 / (download) - annotate - [select for diffs], Sat Oct 25 14:14:12 2008 UTC (14 years, 3 months ago) by yamt
Branch: christos-time_t
Changes since 1.32.4.1: +647 -0 lines
Diff to previous 1.32.4.1 (colored) to branchpoint 1.32 (colored) next main 1.33 (colored)

remove ; after __weak_alias()

Revision 1.32.4.1, Sat Oct 25 14:14:11 2008 UTC (14 years, 3 months ago) by yamt
Branch: christos-time_t
Changes since 1.32: +0 -647 lines
FILE REMOVED

file pthread_rwlock.c was added on branch christos-time_t on 2008-10-25 14:14:12 +0000

Revision 1.32 / (download) - annotate - [select for diffs], Sat Oct 25 14:14:11 2008 UTC (14 years, 3 months ago) by yamt
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, netbsd-6-base, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, matt-premerge-20091211, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, christos-time_t-nbase, christos-time_t-base, cherry-xenmp-base, cherry-xenmp, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2
Branch point for: yamt-pagecache, tls-maxphys, netbsd-6, christos-time_t
Changes since 1.31: +5 -5 lines
Diff to previous 1.31 (colored)

remove ; after __weak_alias()

Revision 1.29.2.2 / (download) - annotate - [select for diffs], Thu Sep 18 04:39:24 2008 UTC (14 years, 4 months ago) by wrstuden
Branch: wrstuden-revivesa
Changes since 1.29.2.1: +5 -5 lines
Diff to previous 1.29.2.1 (colored) to branchpoint 1.29 (colored) next main 1.30 (colored)

Sync with wrstuden-revivesa-base-2.

Revision 1.13.4.1 / (download) - annotate - [select for diffs], Tue Sep 16 18:49:33 2008 UTC (14 years, 4 months ago) by bouyer
Branch: netbsd-4
Changes since 1.13: +38 -8 lines
Diff to previous 1.13 (colored) next main 1.14 (colored)

Sync with the following revisions (requested by skrll in ticket #1196):
	gnu/dist/gdb						removed
	gnu/usr.bin/gdb53					removed
	distrib/cats/instkernel/Makefile			1.14.6.1
	gnu/dist/gdb6/bfd/config.bfd				1.3.6.1
	gnu/dist/gdb6/bfd/elfxx-sparc.c				1.1.1.2.6.1
	gnu/dist/gdb6/bfd/elfxx-sparc.h				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/Makefile.in				1.2.2.1.2.2
	gnu/dist/gdb6/gdb/alpha-tdep.c				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/alpha-tdep.h				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/alphabsd-nat.c			1.1.1.2.6.2
	gnu/dist/gdb6/gdb/alphabsd-nat.h			1.1.2.1
	gnu/dist/gdb6/gdb/alphabsd-tdep.c			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/alphabsd-tdep.h			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/alphanbsd-nat.c			1.1.2.1
	gnu/dist/gdb6/gdb/alphanbsd-tdep.c			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/amd64-nat.c				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/amd64bsd-nat.c			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/amd64nbsd-nat.c			1.1.1.2.6.3
	gnu/dist/gdb6/gdb/amd64nbsd-tdep.c			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/arm-tdep.h				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/armbsd-tdep.c				1.1.2.1
	gnu/dist/gdb6/gdb/armnbsd-nat.c				1.1.1.2.6.2
	gnu/dist/gdb6/gdb/armnbsd-tdep.c			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/configure				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/configure.ac				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/i386bsd-nat.c				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/i386nbsd-tdep.c			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/m68kbsd-nat.c				1.1.1.2.6.2
	gnu/dist/gdb6/gdb/mipsnbsd-nat.c			1.1.1.2.6.2
	gnu/dist/gdb6/gdb/nbsd-thread.c				1.1.2.3
	gnu/dist/gdb6/gdb/ppcnbsd-nat.c				1.1.1.2.6.2
	gnu/dist/gdb6/gdb/ppcnbsd-tdep.c			1.3.6.1
	gnu/dist/gdb6/gdb/sh-tdep.c				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/shnbsd-nat.c				1.1.1.2.6.3
	gnu/dist/gdb6/gdb/shnbsd-tdep.c				1.1.1.2.6.4
	gnu/dist/gdb6/gdb/shnbsd-tdep.h				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/sparc-nat.c				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/sparc64nbsd-nat.c			1.1.1.2.6.2
	gnu/dist/gdb6/gdb/sparcnbsd-nat.c			1.1.1.2.6.2
	gnu/dist/gdb6/gdb/tramp-frame.h				1.1.1.2.6.1
	gnu/dist/gdb6/gdb/vaxbsd-nat.c				1.1.1.2.6.2
	gnu/dist/gdb6/gdb/config/alpha/nbsd.mh			1.1.1.2.6.1
	gnu/dist/gdb6/gdb/config/arm/nbsd.mt			1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/arm/nbsdelf.mh			1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/i386/nbsd64.mh			1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/m68k/nbsdelf.mh		1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/mips/nbsd.mh			1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/powerpc/nbsd.mh		1.1.1.2.6.1
	gnu/dist/gdb6/gdb/config/sh/nbsd.mh			1.1.1.1.6.2
	gnu/dist/gdb6/gdb/config/sh/tm-nbsd.h			1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/sparc/nbsd64.mh		1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/sparc/nbsdelf.mh		1.1.1.1.6.1
	gnu/dist/gdb6/gdb/config/vax/nbsdelf.mh			1.1.1.1.6.1
	gnu/dist/gdb6/opcodes/configure				1.1.1.2.6.1
	gnu/dist/gdb6/opcodes/configure.in			1.1.1.2.6.1
	gnu/usr.bin/Makefile					1.126.4.1
	gnu/usr.bin/gdb6/arch/alpha/config.h			1.3.4.1
	gnu/usr.bin/gdb6/arch/alpha/defs.mk			1.2.6.1
	gnu/usr.bin/gdb6/arch/alpha/init.c			1.2.6.1
	gnu/usr.bin/gdb6/arch/alpha/nm.h			1.2.6.1
	gnu/usr.bin/gdb6/arch/arm/defs.mk			1.2.6.2
	gnu/usr.bin/gdb6/arch/arm/init.c			1.1.6.1
	gnu/usr.bin/gdb6/arch/armeb/config.h			1.1.6.2
	gnu/usr.bin/gdb6/arch/armeb/defs.mk			1.1.6.3
	gnu/usr.bin/gdb6/arch/armeb/init.c			1.1.6.2
	gnu/usr.bin/gdb6/arch/armeb/tm.h			1.1.6.2
	gnu/usr.bin/gdb6/arch/armeb/version.c			1.1.6.2
	gnu/usr.bin/gdb6/arch/i386/defs.mk			1.4.4.1
	gnu/usr.bin/gdb6/arch/i386/init.c			1.3.6.1
	gnu/usr.bin/gdb6/arch/m68000/config.h			1.1.6.2
	gnu/usr.bin/gdb6/arch/m68000/defs.mk			1.1.6.2
	gnu/usr.bin/gdb6/arch/m68000/init.c			1.1.6.2
	gnu/usr.bin/gdb6/arch/m68000/tm.h			1.1.6.2
	gnu/usr.bin/gdb6/arch/m68000/version.c			1.1.6.2
	gnu/usr.bin/gdb6/arch/m68k/defs.mk			1.1.4.1
	gnu/usr.bin/gdb6/arch/m68k/init.c			1.1.4.1
	gnu/usr.bin/gdb6/arch/mipseb/config.h			1.3.4.1
	gnu/usr.bin/gdb6/arch/mipseb/defs.mk			1.2.6.2
	gnu/usr.bin/gdb6/arch/mipseb/init.c			1.2.6.2
	gnu/usr.bin/gdb6/arch/mipsel/config.h			1.2.6.3
	gnu/usr.bin/gdb6/arch/mipsel/defs.mk			1.2.6.3
	gnu/usr.bin/gdb6/arch/mipsel/init.c			1.2.6.3
	gnu/usr.bin/gdb6/arch/mipsel/tm.h			1.2.6.2
	gnu/usr.bin/gdb6/arch/mipsel/version.c			1.2.6.2
	gnu/usr.bin/gdb6/arch/powerpc/defs.mk			1.3.6.1
	gnu/usr.bin/gdb6/arch/powerpc/init.c			1.3.6.1
	gnu/usr.bin/gdb6/arch/sh3eb/config.h			1.2.2.2
	gnu/usr.bin/gdb6/arch/sh3eb/defs.mk			1.2.8.3
	gnu/usr.bin/gdb6/arch/sh3eb/init.c			1.1.8.3
	gnu/usr.bin/gdb6/arch/sh3eb/nm.h			1.1.8.2
	gnu/usr.bin/gdb6/arch/sh3eb/tm.h			1.1.8.2
	gnu/usr.bin/gdb6/arch/sh3eb/version.c			1.1.8.2
	gnu/usr.bin/gdb6/arch/sh3el/config.h			1.2.2.2
	gnu/usr.bin/gdb6/arch/sh3el/defs.mk			1.2.8.3
	gnu/usr.bin/gdb6/arch/sh3el/init.c			1.1.8.3
	gnu/usr.bin/gdb6/arch/sh3el/nm.h			1.1.8.2
	gnu/usr.bin/gdb6/arch/sh3el/tm.h			1.1.8.2
	gnu/usr.bin/gdb6/arch/sh3el/version.c			1.1.8.2
	gnu/usr.bin/gdb6/arch/sparc/defs.mk			1.2.6.1
	gnu/usr.bin/gdb6/arch/sparc/init.c			1.1.6.1
	gnu/usr.bin/gdb6/arch/sparc64/defs.mk			1.2.6.1
	gnu/usr.bin/gdb6/arch/sparc64/init.c			1.1.6.1
	gnu/usr.bin/gdb6/arch/vax/config.h			1.1.6.2
	gnu/usr.bin/gdb6/arch/vax/defs.mk			1.1.6.2
	gnu/usr.bin/gdb6/arch/vax/init.c			1.1.6.2
	gnu/usr.bin/gdb6/arch/vax/tm.h				1.1.6.2
	gnu/usr.bin/gdb6/arch/vax/version.c			1.1.6.2
	gnu/usr.bin/gdb6/arch/x86_64/defs.mk			1.2.6.1
	gnu/usr.bin/gdb6/arch/x86_64/init.c			1.1.6.1
	gnu/usr.bin/gdb6/bfd/arch/armeb/bfd.h			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/armeb/bfdver.h		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/armeb/config.h		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/armeb/defs.mk			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/m68000/bfd.h			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/m68000/bfdver.h		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/m68000/config.h		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/m68000/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/mipsel/bfd.h			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/mipsel/bfdver.h		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/mipsel/config.h		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/mipsel/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/sh3eb/bfd.h			1.1.8.3
	gnu/usr.bin/gdb6/bfd/arch/sh3eb/bfdver.h		1.1.8.2
	gnu/usr.bin/gdb6/bfd/arch/sh3eb/config.h		1.1.8.2
	gnu/usr.bin/gdb6/bfd/arch/sh3eb/defs.mk			1.1.8.3
	gnu/usr.bin/gdb6/bfd/arch/sh3el/bfd.h			1.1.8.3
	gnu/usr.bin/gdb6/bfd/arch/sh3el/bfdver.h		1.1.8.2
	gnu/usr.bin/gdb6/bfd/arch/sh3el/config.h		1.1.8.2
	gnu/usr.bin/gdb6/bfd/arch/sh3el/defs.mk			1.1.8.3
	gnu/usr.bin/gdb6/bfd/arch/vax/bfd.h			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/vax/bfdver.h			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/vax/config.h			1.1.6.2
	gnu/usr.bin/gdb6/bfd/arch/vax/defs.mk			1.1.6.2
	gnu/usr.bin/gdb6/gdb/Makefile				1.5.2.1.2.2
	gnu/usr.bin/gdb6/gdbtui/Makefile			1.2.6.1
	gnu/usr.bin/gdb6/libiberty/arch/armeb/config.h		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/armeb/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/m68000/config.h		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/m68000/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/mipsel/config.h		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/mipsel/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/sh3eb/config.h		1.1.8.2
	gnu/usr.bin/gdb6/libiberty/arch/sh3eb/defs.mk		1.1.8.2
	gnu/usr.bin/gdb6/libiberty/arch/sh3el/config.h		1.1.8.2
	gnu/usr.bin/gdb6/libiberty/arch/sh3el/defs.mk		1.1.8.2
	gnu/usr.bin/gdb6/libiberty/arch/vax/config.h		1.1.6.2
	gnu/usr.bin/gdb6/libiberty/arch/vax/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/armeb/config.h		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/armeb/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/m68000/config.h		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/m68000/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/mipsel/config.h		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/mipsel/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/sh3eb/config.h		1.1.8.2
	gnu/usr.bin/gdb6/opcodes/arch/sh3eb/defs.mk		1.1.8.3
	gnu/usr.bin/gdb6/opcodes/arch/sh3el/config.h		1.1.8.2
	gnu/usr.bin/gdb6/opcodes/arch/sh3el/defs.mk		1.1.8.3
	gnu/usr.bin/gdb6/opcodes/arch/vax/config.h		1.1.6.2
	gnu/usr.bin/gdb6/opcodes/arch/vax/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/armeb/config.h		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/armeb/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/m68000/config.h		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/m68000/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/mipsel/config.h		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/mipsel/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/sh3eb/config.h		1.1.8.2
	gnu/usr.bin/gdb6/readline/arch/sh3eb/defs.mk		1.1.8.2
	gnu/usr.bin/gdb6/readline/arch/sh3el/config.h		1.1.8.2
	gnu/usr.bin/gdb6/readline/arch/sh3el/defs.mk		1.1.8.2
	gnu/usr.bin/gdb6/readline/arch/vax/config.h		1.1.6.2
	gnu/usr.bin/gdb6/readline/arch/vax/defs.mk		1.1.6.2
	gnu/usr.bin/gdb6/sim/arch/mipseb/cconfig.h		1.1.2.1
	gnu/usr.bin/gdb6/sim/arch/mipseb/config.h		1.1.2.1
	gnu/usr.bin/gdb6/sim/arch/mipseb/defs.mk		1.1.2.1
	gnu/usr.bin/gdb6/sim/arch/mipsel/cconfig.h		1.1.2.1
	gnu/usr.bin/gdb6/sim/arch/mipsel/config.h		1.1.2.1
	gnu/usr.bin/gdb6/sim/arch/mipsel/defs.mk		1.1.2.1
	lib/libkvm/kvm_sparc64.c				1.10.18.2
	lib/libpthread/pthread.c				1.48.6.4
	lib/libpthread/pthread_barrier.c			1.6.18.1
	lib/libpthread/pthread_cond.c				1.18.12.2
	lib/libpthread/pthread_debug.h				1.8.18.1
	lib/libpthread/pthread_int.h				1.34.4.5
	lib/libpthread/pthread_lock.c				1.14.6.1
	lib/libpthread/pthread_mutex.c				1.22.4.2
	lib/libpthread/pthread_run.c				1.18.12.4
	lib/libpthread/pthread_rwlock.c				1.13.6.2
	lib/libpthread/pthread_sa.c				1.37.6.5
	lib/libpthread/pthread_sig.c				1.47.4.8
	lib/libpthread/pthread_sleep.c				1.7.6.2
	lib/libpthread/sem.c					1.9.6.2
	lib/libpthread/arch/sh3/pthread_md.h			1.3.6.1
	regress/lib/libpthread/resolv/Makefile			1.1.12.1
	regress/lib/libpthread/sigrunning/Makefile		1.1.2.1
	regress/lib/libpthread/sigrunning/sigrunning.c		1.1.2.1
	share/mk/bsd.own.mk					1.489.4.3
	sys/arch/amd64/amd64/locore.S				1.18.14.1
	sys/arch/amd64/amd64/machdep.c				1.44.2.3.2.1
	sys/arch/amd64/conf/kern.ldscript			1.1.70.1
	sys/arch/cats/conf/Makefile.cats.inc			1.17.30.1
	sys/arch/shark/conf/Makefile.shark.inc			1.6.30.1
	sys/arch/sparc64/conf/kern.ldscript			1.7.26.2
	sys/arch/sparc64/conf/kern32.ldscript			1.6.26.2
	sys/arch/sparc64/include/kcore.h			1.4.92.2
	sys/arch/sparc64/sparc64/locore.s			1.232.4.4
	sys/arch/sparc64/sparc64/machdep.c			1.193.4.3
	sys/arch/sparc64/sparc64/pmap.c				1.184.2.1.2.4
	sys/conf/newvers.sh					1.42.26.2
	sys/kern/kern_sa.c					1.87.4.11
	sys/kern/kern_synch.c					1.173.4.2
	sys/sys/savar.h						1.20.10.2
	tools/gdb/Makefile					1.9.4.1
	tools/gdb/mknative-gdb					1.1.6.1

pullup the wrstuden-fixsa CVS branch to netbsd-4:
toolchain/35540 - GDB 6 support for pthreads.
port-sparc64/37534 - ktrace firefox gives
    kernel trap 30: data access expection
GDB changes:
- delete gdb53
- enable gdb6 on all architectures
- add support for amd64 crash dumps
- add support for sparc64 crash dumps
- add support for /proc pid to executable filename for all archs
- enable thread support for all architectures
- add a note section to kernels to all platforms
- support detection/unwinding of signals for most architectures.
- Fix PTHREAD_UCONTEXT_TO_REG / PTHREAD_REG_TO_UCONTEXT on sh3.
- Apply fix from binutils-current so that sparc gdb can be cross built
  on a 64bit host.
SA/pthread changes:
Pre-allocate memory needed for event delivery. Eliminates dropped
interrupts under load.
Deliver intra-process signals to running threads
Eliminate some deadlock scenarios
Fix intra-process signal delivery when delivering to a thread waiting
for signals. Makes afs work again!

Revision 1.31 / (download) - annotate - [select for diffs], Mon Jun 23 11:00:53 2008 UTC (14 years, 7 months ago) by ad
Branch: MAIN
CVS Tags: wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, matt-mips64-base2
Changes since 1.30: +5 -5 lines
Diff to previous 1.30 (colored)

Move call to pthread__self() later.

Revision 1.29.2.1 / (download) - annotate - [select for diffs], Mon Jun 23 04:29:54 2008 UTC (14 years, 7 months ago) by wrstuden
Branch: wrstuden-revivesa
Changes since 1.29: +75 -24 lines
Diff to previous 1.29 (colored)

Sync w/ -current. 34 merge conflicts to follow.

Revision 1.28.2.2 / (download) - annotate - [select for diffs], Wed Jun 4 02:04:34 2008 UTC (14 years, 8 months ago) by yamt
Branch: yamt-pf42
Changes since 1.28.2.1: +75 -24 lines
Diff to previous 1.28.2.1 (colored) to branchpoint 1.28 (colored) next main 1.29 (colored)

sync with head

Revision 1.30 / (download) - annotate - [select for diffs], Sun May 25 17:05:28 2008 UTC (14 years, 8 months ago) by ad
Branch: MAIN
CVS Tags: yamt-pf42-base4, yamt-pf42-base3, wrstuden-revivesa-base-1, wrstuden-revivesa-base
Changes since 1.29: +75 -24 lines
Diff to previous 1.29 (colored)

PR lib/38741 priority inversion in libpthread breaks apps that use
SCHED_FIFO threads

- Change condvar sync so that we never take the condvar's spinlock without
  first holding the caller-provided mutex. Previously, the spinlock was only
  taken without the mutex in an error path, but it was enough to trigger the
  problem described in the PR.

- Even with this change, applications calling pthread_cond_signal/broadcast
  without holding the interlocking mutex are still subject to the problem
  described in the PR. POSIX discourages this saying that it leads to
  undefined scheduling behaviour, which seems good enough for the time being.

- Elsewhere, use a hash of mutexes instead of per-object spinlocks to
  synchronize entry/exit from sleep queues.

- Simplify how sleep queues are maintained.

Revision 1.28.2.1 / (download) - annotate - [select for diffs], Sun May 18 12:30:40 2008 UTC (14 years, 8 months ago) by yamt
Branch: yamt-pf42
Changes since 1.28: +2 -9 lines
Diff to previous 1.28 (colored)

sync with head.

Revision 1.29 / (download) - annotate - [select for diffs], Mon Apr 28 20:23:01 2008 UTC (14 years, 9 months ago) by martin
Branch: MAIN
CVS Tags: yamt-pf42-base2, hpcarm-cleanup-nbase
Branch point for: wrstuden-revivesa
Changes since 1.28: +2 -9 lines
Diff to previous 1.28 (colored)

Remove clause 3 and 4 from TNF licenses

Revision 1.27.2.1 / (download) - annotate - [select for diffs], Mon Mar 24 07:14:46 2008 UTC (14 years, 10 months ago) by keiichi
Branch: keiichi-mipv6
Changes since 1.27: +4 -2 lines
Diff to previous 1.27 (colored) next main 1.28 (colored)

sync with head.

Revision 1.20.2.3 / (download) - annotate - [select for diffs], Sun Mar 23 00:40:28 2008 UTC (14 years, 10 months ago) by matt
Branch: matt-armv6
Changes since 1.20.2.2: +415 -279 lines
Diff to previous 1.20.2.2 (colored) to branchpoint 1.20 (colored) next main 1.21 (colored)

sync with HEAD

Revision 1.28 / (download) - annotate - [select for diffs], Sat Mar 8 13:46:59 2008 UTC (14 years, 10 months ago) by ad
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base, matt-armv6-nbase, keiichi-mipv6-base
Branch point for: yamt-pf42
Changes since 1.27: +4 -2 lines
Diff to previous 1.27 (colored)

_pthread_rwlock_held_np: if write locked, only return true if held by
the current thread.

Revision 1.27 / (download) - annotate - [select for diffs], Sun Feb 10 18:50:55 2008 UTC (14 years, 11 months ago) by ad
Branch: MAIN
CVS Tags: hpcarm-cleanup-base
Branch point for: keiichi-mipv6
Changes since 1.26: +414 -280 lines
Diff to previous 1.26 (colored)

- Remove libpthread's atomic ops.
- Remove the old spinlock-based mutex and rwlock implementations.
- Use the atomic ops from libc.

Revision 1.26 / (download) - annotate - [select for diffs], Thu Jan 31 11:50:40 2008 UTC (15 years ago) by ad
Branch: MAIN
Changes since 1.25: +3 -3 lines
Diff to previous 1.25 (colored)

pthread_rwlock_wrheld_np: return true only if locked by the calling thread.

Revision 1.25 / (download) - annotate - [select for diffs], Thu Jan 31 10:07:09 2008 UTC (15 years ago) by mlelstv
Branch: MAIN
Changes since 1.24: +5 -5 lines
Diff to previous 1.24 (colored)

use the correct symbols

Revision 1.20.2.2 / (download) - annotate - [select for diffs], Wed Jan 9 01:36:38 2008 UTC (15 years ago) by matt
Branch: matt-armv6
Changes since 1.20.2.1: +64 -33 lines
Diff to previous 1.20.2.1 (colored) to branchpoint 1.20 (colored)

sync with HEAD

Revision 1.24 / (download) - annotate - [select for diffs], Tue Jan 8 20:55:25 2008 UTC (15 years ago) by christos
Branch: MAIN
Changes since 1.23: +6 -6 lines
Diff to previous 1.23 (colored)

no semis after weak alias.

Revision 1.23 / (download) - annotate - [select for diffs], Mon Dec 24 14:46:29 2007 UTC (15 years, 1 month ago) by ad
Branch: MAIN
CVS Tags: matt-armv6-base
Changes since 1.22: +31 -2 lines
Diff to previous 1.22 (colored)

- Fix pthread_rwlock_trywrlock() which was broken.

- Add new functions: pthread_mutex_held_np, mutex_owner_np, rwlock_held_np,
  rwlock_wrheld_np, rwlock_rdheld_np. These match the kernel's locking
  primitives and can be used when porting kernel code to userspace.

- Always create LWPs detached. Do join/exit sync mostly in userland. When
  looped on a dual core box this seems ~30% quicker than using lwp_wait().
  Reduce number of lock acquire/release ops during thread exit.

Revision 1.22 / (download) - annotate - [select for diffs], Tue Nov 13 15:57:13 2007 UTC (15 years, 2 months ago) by ad
Branch: MAIN
CVS Tags: cube-autoconf-base, cube-autoconf
Changes since 1.21: +35 -33 lines
Diff to previous 1.21 (colored)

For PR bin/37347:

- Override __libc_thr_init() instead of using our own constructor.
- Add pthread__getenv() and use instead of getenv(). This is used before
  we are up and running and unfortunatley getenv() takes locks.

Other changes:

- Cache the spinlock vectors in pthread__st. Internal spinlock operations
  now take 1 function call instead of 3 (i386).
- Use pthread__self() internally, not pthread_self().
- Use __attribute__ ((visibility("hidden"))) in some places.
- Kill PTHREAD_MAIN_DEBUG.

Revision 1.20.2.1 / (download) - annotate - [select for diffs], Tue Nov 6 23:11:43 2007 UTC (15 years, 2 months ago) by matt
Branch: matt-armv6
CVS Tags: matt-armv6-prevmlocking
Changes since 1.20: +6 -2 lines
Diff to previous 1.20 (colored)

sync with HEAD

Revision 1.13.6.2 / (download) - annotate - [select for diffs], Sun Nov 4 04:26:58 2007 UTC (15 years, 3 months ago) by wrstuden
Branch: wrstuden-fixsa
Changes since 1.13.6.1: +4 -4 lines
Diff to previous 1.13.6.1 (colored) to branchpoint 1.13 (colored) next main 1.14 (colored)

Check in changes to locking behavior.

pthread__sched() now takes a parameter indicating if the run queue is
already locked. Useful in cases where we already hold pthread__runqueue_lock.

pthread__suspend() now requires callers explicitly lock pthread__runqueue_lock
so we avoid issues with locking order regarding pt_statelock.

Adjsut our lock hierarchy. pthread__runqueue_lock is now above
pt_statelock, triggering the above adjustments. Adjust a lot of routines
as a result. Also move pt_siglock way up in the hierarchy, making
pthread__kill() not violate locking. Add a few extra locks to the list.

Adjust a botch in how pthread_join() used pthread-spintrylock().

pthread_cancel() now correctly walks up the locks with thread->pt_sleeplock.
We can't just lock it, as it points to a lock in the top locking rung. So
try locking, and if it fails, unlock and re-lock. Add code to cope with
the target thread not being in the expected state (which was on a
blocked queue) after we get all the locks.

Add comments to describe what's going on in places that I got confused.

Now that pt_statelock is lower in the locking order than
pthread__runqueue_lock, we can explicitly lock a thread's state before
we take it off the run queue. Adjust sched_yield() accordingly and
add some locking calls that were commented out before (as they'd have
been locking violations).

pthread_next(): now that we can lock the state lock while holding the run
queue lock, do so. Set a thread's state to PT_STATE_RUNNING before we
pull it off the run queue. Since we always are going to switch to it,
set pt_vpid and pt_lastlwp while setting the state. pthread_next
callers now _don't_ set these values.

pthread__kill(): grab pthread__runqueue_lock before target->pt_statelock.
If we want to target a thread that is on a blocked queue, do the
pthread_spintrylock() dance. Unlock all three locks we're running around
with, lock target->pt_sleeplock, then re-lock them all. After we lock,
make sure that the thread's still on a blocked queue before proceeding. If
it's not, either exit (if we wanted to wake out of sigtimedwait())
or start it all over. If the thread has gone live, it may have blocked
our signal and it'd be quite weird to get a signal you'd disabled, just
because the signaller had been running before you blocked it.

Revision 1.18.2.3 / (download) - annotate - [select for diffs], Mon Sep 10 10:54:07 2007 UTC (15 years, 4 months ago) by skrll
Branch: nick-csl-alignment
Changes since 1.18.2.2: +6 -2 lines
Diff to previous 1.18.2.2 (colored) to branchpoint 1.18 (colored) next main 1.19 (colored)

Sync with HEAD.

Revision 1.13.6.1 / (download) - annotate - [select for diffs], Mon Sep 10 05:24:53 2007 UTC (15 years, 4 months ago) by wrstuden
Branch: wrstuden-fixsa
Changes since 1.13: +36 -6 lines
Diff to previous 1.13 (colored)

Check in first step towards having pthread_kill() kill a thread running
on another CPU.

This change adds initial support for deferred signal handling. Just before
we go to sleep and while we hold &self->pt_statelock, check to see if we
have any deferred signals (blocked signals) pending. These are signals
that are not masked in our mask and which have been sent to us. We
were running when they came in. Further, since they are being handled
this way, there's a signal handler defined for them.

So unlock, run the signal handler(s), then carry on.

For condition variables, we consider this a spurious wakeup, so we just
return 0, having not unlocked the mutex. We run the handler with
the mutex held. This shouldn't matter, as you aren't supposed to play
with mutexes in signal handlers. :-)

For nanosleep(), we just process signals, then go to sleep.

For all other cases, we are in a loop with some external predicate. So
we process the signal then roll around the loop to see if it still applies.

In sched_yield(), spin until all deferred signals are gone. Since we hold
self->pt_statelock and that lock has to be held before sending a deferred
signal, no new deferred signals will come in until we're asleep.

While here, be more careful about locking while changing pt_state
to PT_STATE_RUNNING. Grab pt_statelock while doing it, and also set
next->pt_vpid to self->pt_vpid holding the same lock. Will make
the test to determine how to deliver a signal work right (since
a thread's vpid will soon matter in the general case). No longer
set next->pt_vpid in pthread__next().

Revision 1.21 / (download) - annotate - [select for diffs], Fri Sep 7 14:09:28 2007 UTC (15 years, 4 months ago) by ad
Branch: MAIN
CVS Tags: nick-csl-alignment-base5
Changes since 1.20: +6 -2 lines
Diff to previous 1.20 (colored)

- Don't take the mutex's spinlock (ptr_interlock) in pthread_cond_wait().
  Instead, make the deferred wakeup list a per-thread array and pass down
  the lwpid_t's that way.

- In pthread_cond_wait(), take the mutex before dealing with early wakeup.
  In this way there should never be contention on the CV's spinlock if
  the app follows POSIX rules (there should only be contention on the
  user-provided mutex).

- Add a port of the kernel's rwlocks. The rwlock's spinlock is only taken if
  there is contention. This is enabled where atomic ops are available. Right
  now that is only i386 and amd64 because I don't have other hardware to
  test with. It's trivial to add stubs for other architectures as long as
  they have compare-and-swap. When we have proper atomic ops the old rwlock
  code can be removed.

- Add a new mutex implementation that's similar to the kernel's mutexes, but
  uses compare-and-swap to maintain the waiters list, so no spinlocks are
  involved. Same caveats apply as for the rwlocks.

Revision 1.18.2.2 / (download) - annotate - [select for diffs], Mon Sep 3 10:14:16 2007 UTC (15 years, 5 months ago) by skrll
Branch: nick-csl-alignment
Changes since 1.18.2.1: +34 -35 lines
Diff to previous 1.18.2.1 (colored) to branchpoint 1.18 (colored)

Sync with HEAD.

Revision 1.20 / (download) - annotate - [select for diffs], Thu Aug 16 13:54:17 2007 UTC (15 years, 5 months ago) by ad
Branch: MAIN
CVS Tags: nick-csl-alignment-base4, nick-csl-alignment-base3
Branch point for: matt-armv6
Changes since 1.19: +34 -35 lines
Diff to previous 1.19 (colored)

Trim fat off libpthread internal spinlock operations. Makes a mesurable
improvement across the board.

Revision 1.18.2.1 / (download) - annotate - [select for diffs], Wed Aug 15 13:46:53 2007 UTC (15 years, 5 months ago) by skrll
Branch: nick-csl-alignment
Changes since 1.18: +10 -8 lines
Diff to previous 1.18 (colored)

Sync with HEAD.

Revision 1.19.2.2 / (download) - annotate - [select for diffs], Sat Aug 4 13:37:51 2007 UTC (15 years, 6 months ago) by ad
Branch: matt-mips64
Changes since 1.19.2.1: +433 -0 lines
Diff to previous 1.19.2.1 (colored) to branchpoint 1.19 (colored) next main 1.20 (colored)

Some significant performance improvements, and a fix for a race with pthread
detach/join.

- Make mutex acquire spin for a short time, as done with spinlocks.
- Make the number of spins controllable with the env var PTHREAD_NSPINS.
- Reduce the amount of time that libpthread internal spinlocks are held.
- Rely more on the barrier effects of park/unpark to avoid taking spinlocks.
- Simplify the locking around pthreads and the global queues.
- Align per-thread sync data on a 128 byte boundary.
- Offset thread stacks by a small amount to try and reduce cache thrash.

Revision 1.19.2.1, Sat Aug 4 13:37:50 2007 UTC (15 years, 6 months ago) by ad
Branch: matt-mips64
Changes since 1.19: +0 -433 lines
FILE REMOVED

file pthread_rwlock.c was added on branch matt-mips64 on 2007-08-04 13:37:51 +0000

Revision 1.19 / (download) - annotate - [select for diffs], Sat Aug 4 13:37:50 2007 UTC (15 years, 6 months ago) by ad
Branch: MAIN
CVS Tags: nick-csl-alignment-base2, matt-mips64-base
Branch point for: matt-mips64
Changes since 1.18: +10 -8 lines
Diff to previous 1.18 (colored)

Some significant performance improvements, and a fix for a race with pthread
detach/join.

- Make mutex acquire spin for a short time, as done with spinlocks.
- Make the number of spins controllable with the env var PTHREAD_NSPINS.
- Reduce the amount of time that libpthread internal spinlocks are held.
- Rely more on the barrier effects of park/unpark to avoid taking spinlocks.
- Simplify the locking around pthreads and the global queues.
- Align per-thread sync data on a 128 byte boundary.
- Offset thread stacks by a small amount to try and reduce cache thrash.

Revision 1.18 / (download) - annotate - [select for diffs], Sat Mar 24 18:52:00 2007 UTC (15 years, 10 months ago) by ad
Branch: MAIN
CVS Tags: nick-csl-alignment-base, hpcarm-cleanup
Branch point for: nick-csl-alignment
Changes since 1.17: +8 -6 lines
Diff to previous 1.17 (colored)

- Test+branch is usually cheaper than making an indirect function call,
  so avoid making them.
- When parking an LWP on a condition variable, point the hint argument at
  the mutex's waiters queue. Chances are we will be awoken from that later.

Revision 1.17 / (download) - annotate - [select for diffs], Mon Mar 5 23:56:18 2007 UTC (15 years, 11 months ago) by ad
Branch: MAIN
Changes since 1.16: +22 -9 lines
Diff to previous 1.16 (colored)

Update to match changed pthread__park() interface.

Revision 1.16 / (download) - annotate - [select for diffs], Fri Mar 2 18:53:53 2007 UTC (15 years, 11 months ago) by ad
Branch: MAIN
Changes since 1.15: +3 -132 lines
Diff to previous 1.15 (colored)

Remove the PTHREAD_SA option. If M:N threads is reimplemented it's
better off done with a seperate library.

Revision 1.15 / (download) - annotate - [select for diffs], Sun Dec 24 18:39:46 2006 UTC (16 years, 1 month ago) by ad
Branch: MAIN
Changes since 1.14: +16 -12 lines
Diff to previous 1.14 (colored)

Fix bugs with and improve upon previous.

Revision 1.14 / (download) - annotate - [select for diffs], Sat Dec 23 05:14:47 2006 UTC (16 years, 1 month ago) by ad
Branch: MAIN
Changes since 1.13: +39 -3 lines
Diff to previous 1.13 (colored)

Conditionalised support for 1:1 threads. Needs associated kernel changes
and more work to be useful.

Revision 1.11.2.1 / (download) - annotate - [select for diffs], Tue Nov 1 20:01:31 2005 UTC (17 years, 3 months ago) by jmc
Branch: netbsd-3
CVS Tags: netbsd-3-1-RELEASE, netbsd-3-1-RC4, netbsd-3-1-RC3, netbsd-3-1-RC2, netbsd-3-1-RC1, netbsd-3-1-1-RELEASE, netbsd-3-1, netbsd-3-0-RELEASE, netbsd-3-0-RC6, netbsd-3-0-RC5, netbsd-3-0-RC4, netbsd-3-0-RC3, netbsd-3-0-RC2, netbsd-3-0-RC1, netbsd-3-0-3-RELEASE, netbsd-3-0-2-RELEASE, netbsd-3-0-1-RELEASE, netbsd-3-0
Changes since 1.11: +22 -5 lines
Diff to previous 1.11 (colored) next main 1.12 (colored)

Pullup revs 1.12-1.13 (requested by chs in ticket #926)
 In pthread_mutex_lock_slow(), pthread_rwlock_timedrdlock() and sem_wait(),
 call pthread__start() if it hasn't already been called. this avoids
 an internal assertion from the library if these routines are used
 before any threads are created and they need to sleep.
 PR#20256, PR#24241, PR#25722, PR#26096

 Fix the interaction between sigtimedwait() and pthread_kill(),
 both waking up a sleeping thread and avoiding going to sleep if
 a signal is already pending. PR#30348

 In pthread_kill() and pthread_suspend_np(), return without doing anything
 f the target thread is a zombie.
 In all the functions that didn't do so already, verify a pthread_t before
 dereferencing it (under #ifdef ERRORCHECK, since these checks are not
 mandated by the standard).

 Starting the pthread library (ie. calling pthread__start()) before
 any threads are created turned out to be not such a good idea.
 there are stronger requirements on what has to work in a forked child
 while a process is still single-threaded. so take all that stuff
 back out and fix the problems with single-threaded programs that
 are linked with libpthread differently, by checking if the library
 has been started and doing completely different stuff if it hasn't been:
 - for pthread_rwlock_timedrdlock(), just fail with EDEADLK immediately.
 - for sem_wait(), the only thing that can unlock the semaphore is a
 signal handler, so use sigsuspend() to wait for a signal.
 - for pthread_mutex_lock_slow(), just go into an infinite loop
 waiting for signals.

 If mlock() fails in pthread_create(), return EAGAIN instead of
 failing an assertion.

Revision 1.13 / (download) - annotate - [select for diffs], Wed Oct 19 02:15:03 2005 UTC (17 years, 3 months ago) by chs
Branch: MAIN
CVS Tags: wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: wrstuden-fixsa, netbsd-4
Changes since 1.12: +16 -7 lines
Diff to previous 1.12 (colored)

starting the pthread library (ie. calling pthread__start()) before
any threads are created turned out to be not such a good idea.
there are stronger requirements on what has to work in a forked child
while a process is still single-threaded.  so take all that stuff
back out and fix the problems with single-threaded programs that
are linked with libpthread differently, by checking if the library
has been started and doing completely different stuff if it hasn't been:
 - for pthread_rwlock_timedrdlock(), just fail with EDEADLK immediately.
 - for sem_wait(), the only thing that can unlock the semaphore is a
   signal handler, so use sigsuspend() to wait for a signal.
 - for pthread_mutex_lock_slow(), just go into an infinite loop
   waiting for signals.

I also noticed that there's a "sem2" test that has never worked in its
single-threaded form.  the problem there is that a signal handler tries
to take a sem_t interlock which is already held when the signal is received.
fix this too, by adding a single-threaded case for sig_trywait() that
blocks signals instead of using the userland interlock.

Revision 1.12 / (download) - annotate - [select for diffs], Sun Oct 16 00:07:24 2005 UTC (17 years, 3 months ago) by chs
Branch: MAIN
Changes since 1.11: +13 -5 lines
Diff to previous 1.11 (colored)

in pthread_mutex_lock_slow(), pthread_rwlock_timedrdlock() and sem_wait(),
call pthread__start() if it hasn't already been called.  this avoids
an internal assertion from the library if these routines are used
before any threads are created and they need to sleep.
fixes PR 20256, PR 24241, PR 25722, PR 26096.

Revision 1.11 / (download) - annotate - [select for diffs], Sun Jan 9 01:57:38 2005 UTC (18 years ago) by nathanw
Branch: MAIN
CVS Tags: netbsd-3-base
Branch point for: netbsd-3
Changes since 1.10: +12 -4 lines
Diff to previous 1.10 (colored)

pthread_rwlock_timedrdlock() and pthread_rwlock_timedwrlock():
After exiting the try-again loop, make one more test of the lock
conditions, in case it was released while a signal handler kept the
thread busy past the alarm expiration.

Revision 1.10 / (download) - annotate - [select for diffs], Sun Jan 9 01:47:20 2005 UTC (18 years ago) by nathanw
Branch: MAIN
Changes since 1.9: +13 -3 lines
Diff to previous 1.9 (colored)

pthread_rwlock_timedrdlock() and pthread_rwlock_timedwrlock():
Expand the test for valid values of abs_timeout to check for negative
values of tv_sec and tv_nsec.

Revision 1.7.2.2 / (download) - annotate - [select for diffs], Thu Aug 12 18:26:38 2004 UTC (18 years, 5 months ago) by jmc
Branch: netbsd-2-0
CVS Tags: netbsd-2-base, netbsd-2-1-RELEASE, netbsd-2-1-RC6, netbsd-2-1-RC5, netbsd-2-1-RC4, netbsd-2-1-RC3, netbsd-2-1-RC2, netbsd-2-1-RC1, netbsd-2-1, netbsd-2-0-RELEASE, netbsd-2-0-RC5, netbsd-2-0-RC4, netbsd-2-0-RC3, netbsd-2-0-RC2, netbsd-2-0-RC1, netbsd-2-0-3-RELEASE, netbsd-2-0-2-RELEASE, netbsd-2-0-1-RELEASE, netbsd-2
Changes since 1.7.2.1: +4 -4 lines
Diff to previous 1.7.2.1 (colored) to branchpoint 1.7 (colored) next main 1.8 (colored)

Pullup rev 1.9 (requested by yamt in ticket #751)

pthread_rwlock_timedrdlock/pthread_rwlock_timedwrlock:
fix lock/unlock inversions in ERRORCHECK.

Revision 1.7.2.1 / (download) - annotate - [select for diffs], Thu Aug 12 04:22:36 2004 UTC (18 years, 5 months ago) by jmc
Branch: netbsd-2-0
Changes since 1.7: +3 -3 lines
Diff to previous 1.7 (colored)

Pullup rev 1.8 (requested by yamt in ticket #749)

pthread_rwlock_timedwrlock: return ETIMEDOUT appropriately.

Revision 1.9 / (download) - annotate - [select for diffs], Tue Aug 3 11:50:45 2004 UTC (18 years, 6 months ago) by yamt
Branch: MAIN
Changes since 1.8: +4 -4 lines
Diff to previous 1.8 (colored)

pthread_rwlock_timedrdlock/pthread_rwlock_timedwrlock:
fix lock/unlock inversions in ERRORCHECK.

Revision 1.8 / (download) - annotate - [select for diffs], Tue Aug 3 11:40:24 2004 UTC (18 years, 6 months ago) by yamt
Branch: MAIN
Changes since 1.7: +3 -3 lines
Diff to previous 1.7 (colored)

pthread_rwlock_timedwrlock: return ETIMEDOUT appropriately.

Revision 1.7 / (download) - annotate - [select for diffs], Fri Jan 9 18:08:28 2004 UTC (19 years ago) by cl
Branch: MAIN
CVS Tags: netbsd-2-0-base
Branch point for: netbsd-2-0
Changes since 1.6: +24 -9 lines
Diff to previous 1.6 (colored)

- add deadlock check to pthread_rwlock_wrlock and pthread_rwlock_timedwrlock
- return EPERM when unlocking a lock which isn't held
=> prevent the failure in PR 24023, where the citrus code had a deadlocking
   code path

- remove deadlock check in pthread_rwlock_tryrdlock, return EBUSY instead
=> makes pthread_rwlock_tryrdlock standards compliant

Revision 1.6 / (download) - annotate - [select for diffs], Mon Nov 24 23:54:13 2003 UTC (19 years, 2 months ago) by cl
Branch: MAIN
Changes since 1.5: +4 -4 lines
Diff to previous 1.5 (colored)

Update mutex/rwlock/sem code to match recent change in cond code.

Revision 1.5 / (download) - annotate - [select for diffs], Sat Mar 8 08:03:35 2003 UTC (19 years, 11 months ago) by lukem
Branch: MAIN
Changes since 1.4: +4 -2 lines
Diff to previous 1.4 (colored)

add __RCSID()

Revision 1.4 / (download) - annotate - [select for diffs], Sat Feb 15 00:52:18 2003 UTC (19 years, 11 months ago) by nathanw
Branch: MAIN
Changes since 1.3: +1 -2 lines
Diff to previous 1.3 (colored)

Remove unnecessary inclusion of <assert.h>.

Revision 1.3 / (download) - annotate - [select for diffs], Fri Jan 31 04:59:40 2003 UTC (20 years ago) by nathanw
Branch: MAIN
Changes since 1.2: +3 -4 lines
Diff to previous 1.2 (colored)

Use pthread__sched_sleepers() instead of iterating over sleep queues
ourself.

Revision 1.2 / (download) - annotate - [select for diffs], Sat Jan 18 10:34:16 2003 UTC (20 years ago) by thorpej
Branch: MAIN
Changes since 1.1: +455 -0 lines
Diff to previous 1.1 (colored)

Merge the nathanw_sa branch.

Revision 1.1.2.5 / (download) - annotate - [select for diffs], Sat Jan 11 09:14:35 2003 UTC (20 years ago) by skrll
Branch: nathanw_sa
CVS Tags: nathanw_sa_end
Changes since 1.1.2.4: +3 -1 lines
Diff to previous 1.1.2.4 (colored) to branchpoint 1.1 (colored) next main 1.2 (colored)

Improve error checking.

OK'd by Nathan.

Revision 1.1.2.4 / (download) - annotate - [select for diffs], Thu Jan 9 19:27:52 2003 UTC (20 years ago) by thorpej
Branch: nathanw_sa
Changes since 1.1.2.3: +8 -8 lines
Diff to previous 1.1.2.3 (colored) to branchpoint 1.1 (colored)

Remove trailing semicolon from __strong_alias().

Revision 1.1.2.3 / (download) - annotate - [select for diffs], Wed Jan 8 19:34:23 2003 UTC (20 years ago) by thorpej
Branch: nathanw_sa
Changes since 1.1.2.2: +9 -1 lines
Diff to previous 1.1.2.2 (colored) to branchpoint 1.1 (colored)

Rewrite the way libpthread provides thread primitives to libc, using
strong and weak aliases (the way cancelation points are handled).

Work around lame Unix static library semantics which could cause
the wrong thread primitives or cancelation point functions to be
included in a statically-linked program.

THIS IS AN ABI CHANGE.  People running the nathanw_sa branch should
ensure that their libc and libpthread are in sync after updating.

Revision 1.1.2.2 / (download) - annotate - [select for diffs], Wed Dec 18 22:56:12 2002 UTC (20 years, 1 month ago) by nathanw
Branch: nathanw_sa
Changes since 1.1.2.1: +28 -27 lines
Diff to previous 1.1.2.1 (colored) to branchpoint 1.1 (colored)

Analagous to the fixes in pthread_cond.c, ensure that only one of an
alarm callback or an unlock can remove a thread from a timed lock
sleep and schedule it.

Don't call pthread__alarm_fired() until after pthread__alarm_del().

Revision 1.1.2.1 / (download) - annotate - [select for diffs], Mon Oct 28 00:06:09 2002 UTC (20 years, 3 months ago) by nathanw
Branch: nathanw_sa
Changes since 1.1: +444 -0 lines
Diff to previous 1.1 (colored)

Implement POSIX read-write locks.

Revision 1.1, Mon Oct 28 00:06:09 2002 UTC (20 years, 3 months ago) by nathanw
Branch: MAIN
CVS Tags: nathanw_sa_before_merge
Branch point for: nathanw_sa
FILE REMOVED

file pthread_rwlock.c was initially added on branch nathanw_sa.

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