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

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Keyword substitution: kv
Default branch: MAIN

Add missing headers

Add epoll(2) from Theodore Preduta as part of GSoC 2023

lib: remove CONSTCOND comment

Since 2021-01-31, lint doesn't need it anymore for the common pattern of
'do ... while (0)'.

pthread: Nix trailing whitespace.

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.)

Pull up following revision(s) (requested by christos in ticket #1355):

	lib/libpthread/pthread_cancelstub.c: revision 1.39
	lib/libc/sys/Makefile.inc: revision 1.247
	lib/libpthread/pthread_cancelstub.c: revision 1.40

PR/56424: Clay Mayers: recvfrom() is not a cancelation point as documented
in pthread_setcanceltype.3

remove parameter names from decls.

remove parameter names from decls.

PR/56424: Clay Mayers: recvfrom() is not a cancelation point as documented
in pthread_setcanceltype.3

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")

resync from head

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

- 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

sync with head

Pull up following revision(s) (requested by agc in ticket #174):
	lib/libpthread/pthread_cancelstub.c: revision 1.36
Add a pthread cancel stub for sigwait, following Onno van der Linden's
analysis in PR 45131.  Kindly tested by Hisashi T Fujinaka (using csup
as the test case) with a successful outcome.
OK martin@

trailing whitespace police.

Add a pthread cancel stub for sigwait, following Onno van der Linden's
analysis in PR 45131.  Kindly tested by Hisashi T Fujinaka (using csup
as the test case) with a successful outcome.

OK martin@

Don't kill the read(2) stub, just the magic around it.

Disable Fortification for pthread and rump stubs.

Backout previous, it causes lots of test failures (tests/fs/nfs for
example).

Fix SSP builds (Vladimir Kirillov)

Sync with HEAD

make the code more re-usable

Moving the ssp check inside the source code does not work properly because
the compiler loses information about the size of the object. So instead of
the hacky #define mess we did before, add a way to inject our function between
the user call and the system call.

Fix SSP build.
XXX: This is gross.

make kevent(2) a cancelation point, and document properly all the cancelation
points we currently support.

sync to netbsd-5

Pull up following revision(s) (requested by enami in ticket #921):
	lib/libpthread/pthread_misc.c: revision 1.14 via patch
	lib/libpthread/pthread_cancelstub.c: revision 1.27 via patch
Make nanosleep cancelable again.

Make nanosleep cancelable again.

fix __sigtimedwait50

merge christos-time_t

use the proper sigtimedwait.

commit changes to the right branch.

file pthread_cancelstub.c was added on branch christos-time_t on 2008-12-29 15:10:58 +0000

revert previous. It was meant for the branch

adjust for time_t 64

Adjust the compat stuff slightly so that the changes are mostly self
contained (Makefile, pthread_compat.c).

make PTHREAD__COMPAT=1

Builds a libpthread that can be dropped into a NetBSD 2/3/4 chroot.

This makes threading work in the chroot when using a NetBSD 5 kernel, no
other modifications required.

Sync with wrstuden-revivesa-base-2.

Shut lint up.

sync with head.

Remove clause 3 and 4 from TNF licenses

sync with HEAD

PR/37932: Yakovetsky Vladimir: build distribution with USE_FORT fails
Avoid read redefinition

sync with HEAD

- Use pthread__cancelled() in more places.
- pthread_join(): assert that pthread_cond_wait() returns zero.

int -> ssize_t in a couple of places.

sync with HEAD

Add cancellation stubs in libpthread for POSIX messages queues and
asynchronous I/O.

OK by <ad>.

Add __sigsuspend14, sigtimedwait as cancellation points.

XXX: Work around libpthread's "intimate" connection with libc.

Pull up revision 1.12 (requested by kleink in ticket #38):
Include <sys/select.h> explicitly rather than relying on other headers
to do it.

Include <sys/select.h> explicitly rather than relying on other headers
to do it.

Pull up revision 1.11 (requested by kleink in ticket #27):
Interpose cancellation points in pollts() and pselect(), bringing us
to libc.so.12.127 and libpthread.so.0.6.

Interpose cancellation points in pollts() and pselect(), bringing us
to libc.so.12.127 and libpthread.so.0.6.

Move up the definition of __LIBC12_SOURCE__; since <poll.h> now includes
<sys/sigtypes.h> this is needed earlier.

IEEE Std 1003.1-2001/Cor 2-2004, item XSH/TC2/D6/5: fdatasync() shall
have cancellation points.

Note: we ride today's resolver-related version bumps.

add CONSTCOND in constant condition.

Manually inline pthread__testcancel in these routines; two function
calls' worth of overhead per cancellable syscall is overkill.

Userland portion of fsync_range(2), written by Bill Studenmund, and
contributed by Wasabi Systems, Inc.

add __RCSID()

Implement nanosleep() at userlevel. Threaded applications seem to like
to sleep a lot, and there's no need for each such thread to consume kernel
resources.

(accidentally checked the pthread.c part of this in yesterday; no reason
 not to finish the job)

Add cancellation stubs for accept() and connect().

Merge the nathanw_sa branch.

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.

Whitespace.

Oops, re-add nanosleep stub, which had been accidentally deleted.

Adapt to new syscall stub names. Create strong aliases for override functions.

Many signal improvements:

 - Implement sigsuspend()
 - Take pending signals that are unblocked in pthread_sigmask().
 - Tweak the signal mask passed by sigaction() to permit us to manage
   our own thread-specific signal masks.
 - Don't try to deliver signals to zombie threads.
 - Prevent a race between deciding a thread can take a signal and actually
   taking it.
 - Don't put threads that are blocked in a syscall on the run queue.
 - Add debug logging.

Add cancellation-wrapped syscall stubs that override the weak symbols
in libsyscall.

file pthread_cancelstub.c was initially added on branch nathanw_sa.