library, it may pull in that thread library at run time. If the
process started out single-threaded, this could cause attempts to
release locks that do not exist. Guard against this possibility by
checking __isthreaded before invoking thread primitives.
A similar problem remains if the process is linked against one thread
library, but the NSS module is linked against another. This can only
be avoided by careful design of the NSS module.
Submitted by: Sean McNeil <sean@mcneil.com> (mostly; bugs are mine)
environment. This stops some ports keeling over on an OpenSSL assert.
(The patch is not exactly the one from the PR, but has been refined
based on advice from freebsd-threads.)
PR: 51205
Submitted by: Jim Westfall <jwestfall@surrealistic.net>
MFC after: 1 month
is necessary because some IBMs use recursive methods (pointed out by
Robert Moore from Intel). The latter was a typo on my part. It was disabled
by default when it should have been enabled.
This corrects a problem of lost-precision for `-r' (sort-by-CPU). Also,
for sort-by-CPU and sort-by-memory, any processes which have the same
value CPU or MEMORY are now sorted by TTY and then (if needed) by pid.
(* - I just added the NODEV checks, after doing some testing of my own)
Submitted by: bde
MFC after: 1 week
stuff was here (NFS) was fixed by Alfred in November. The only remaining
consumer of the stub functions was umapfs, which is horribly horribly
broken. It has missed out on about the last 5 years worth of maintenence
that was done on nullfs (from which umapfs is derived). It needs major
work to bring it up to date with the vnode locking protocol. umapfs really
needs to find a caretaker to bring it into the 21st century.
Functions GC'ed:
vop_noislocked, vop_nolock, vop_nounlock, vop_sharedlock.
- Add tun_mtx to tun_softc. Annotate what is (and isn't) locked by it.
- Lock down tun_flags, tun_pid.
- In the output path, cache the value of tun_flags so it's consistent
when processing a particular packet rather than re-reading the field.
- In general, use unlocked reads for debugging.
- Annotate a couple of places where additional unlocked reads may be
possible.
- Annotate that tun_pid is used as a bug in tunopen().
if_tun is now largely MPSAFE, although questions remain about some of
the cdevsw fields and how they are synchronized.
* Use .Fa instead of .Pa for function arguments.
* Utilize the .Po/.Pc commands for parenthesis
so the format is not ruined.
Inspired by: pjd's last commit to this file
other pseudo-interfaces, break out tear-down of a softc into a
separate tun_destroy() function, and invoke that from the module
unloader. Hold tunmtx across manipulations of the global softc list.
functionality spelled out in SUSv3.
o Signal of 0 means do everything except send the signal
o Check that the signal is not invalid
o Check that the target thread is not dead/invalid
