process to sneak in and write to or close the pipe. The read code
enters a 'piperd' state after doing the lock operation without
checking to see if the state changed, which can cause the process
to wait forever.
The code has also been documented more.
completes, change if() to KASSERT(). This is not a bug, we are
simplify clarifying and optimizing the code.
In if/else in vfs_object_create(), the failure of both conditionals
will lead to a NULL object. Exit gracefully if this case occurs.
( this case does not normally occur, but needed to be handled ).
Obtained from: Eivind Eklund <eivind@FreeBSD.org>
Since paging is in progress, page scan in vm_page_qcollapse() must be
protected at atleast splbio() to prevent pages from being ripped out from
under the scan.
Add freebsd.fr, for FreeBSD specific forth source. Add $ and %, to
replace the lost @ and - functionality of include. $ has the opposite
behavior of @ though, since the default behavior was inverted.
Change include() so it will be able to load files with forth code,
instead of just builtins. Remove #@- from the include section of the
help file, since they don't work in the new version of include, unless
BOOT_FORTH is not defined.
Change bf_run() so it will return the result returned by ficlExec(). Also,
make bf_run() push "interpret" to be executed by ficlExec(), since ficlExec()
doesn't do it by itself. (Things worked previously because nothing
recursed through ficlExec() by the way of bf_run()).
Change/extend comments on builtin behavior.
Search for "interpret" at the end of bf_init(), so /boot/boot.4th can
provide it's own version.
Remove dead code.
error cases, but the replacement should be doing everything they
did, except what did shouldn't be doing, and might do a little more
they ought to be doing.
structures" but since tty structs aren't malloced it is actually
mainly for tty-level (clist) buffers. It was slightly misused
here for com structs, and the previous commit completely misused
it for device buffers.
Fixed some bugs in nearby pccard code:
- memory leak when pccards go away (broken in previous commit).
- bogus bzeroing of the com struct before freeing it.
- style bugs.
the input speed, so that it can work at speeds larger than 115200
bps without being flow controlled. The buffer is twice as large
as before at 115200 bps and half as large as before at low speeds
Use a single interrupt-level buffer instead of ping-pong buffers
because the simplifications provided by ping-pong buffers became
complications.
This change is over-engineered. Statically configured buffering
was simpler and faster, and increasing the buffer size to support
1.5Mbps would cost about 1 US cent's worth of RAM per port, but I
was interested in the buffer switching mechanism.
not to vmThrow errors. This is not what the comments say it does, and
it doesn't work when there is no ficlExec environment (like it's only
use in sys/boot/common/interp_forth.c).
PR: bin/9772
allocated was not big enough, but it ended up to being used where it
was supposed to be used. The person who did that ought to be shot, but
since I'm a good person, I'll forgive myself...
PR: bin/9743
panic during boot on machines with >=2GB of RAM. Also changed some
incorrect printf conversion specifiers from %d to %u (signed to unsigned).
This fixes bugs when printing the amount of memory on machines with >=2GB
of RAM.
The vm_map_insert()/vm_object_coalesce() optimization has been extended
to include OBJT_SWAP objects as well as OBJT_DEFAULT objects. This is
possible because it costs nothing to extend an OBJT_SWAP object with
the new swapper. We can't do this with the old swapper. The old swapper
used a linear array that would have had to have been reallocated, costing
time as well as a potential low-memory deadlock.
/dev/urandom takes about 38 seconds on a P5/133. It is useful
to be able to kill such reads almost immediately. Processes
doing such reads are now scheduled so their denial of service
is no worse than that of processes looping in user mode.
code when examining their fix, which caused my code (in rev 1.52) to:
- panic("soaccept: !NOFDREF")
- fatal trap 12, with tracebacks going thru soclose and soaccept
Drivers should be updated if they get flagged by this message.
(The reason this is important is because we do not have a way
to catch this mistake for interfaces added after ifinit() runs.)
