io: io_always, and zero-length operations support.

A zero-length read should complete immediately, even if the fd isn't readable.
Wire this up, and expose it for callers to use.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

cpuid: fix example compilation

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: Now we support extended feature testing.

For now, we'll just have this and later on I'll make it support
writing it also using cpuid_write_info.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

argcheck: a module to check argument ranges

This code provides some macros to check arguments for valid value ranges.
Consider this a mild version of assert(3), because all it does is to log
a message and continue.

These macros don't replace error handling, but they are useful in
situations where an error is unexpected but not common, i.e.
this shouldn't happen but if it does let me know".

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

io: io_close_other()

And add test for that which also tests duplex case.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

io: Fix bug where duplex connection is last fd, when another gets deleted.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Revert "io: closing one side of a duplex connection closes both."

This reverts commit 490b63852f281f0d72eb6f6dfa5e0dce36bcbe0d.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Conflicts:
ccan/io/io.c

cpuid: Introduce cpuid_write_info

This function writes CPU information to a file.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: documentation fix

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

Merge branch 'master' of ozlabs.org:ccan

io: add io_is_idle().

Turns out to be useful for complex cases.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

io: handle duplex corner cases.

Especially where we have just done a read and spin off a duplex to do a read
as well.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

cpuid: remove un-needed bit shifting

eax/ebx/ecx/edx are 32-bit registers, and we need 8 bits from most
significand bits so there is no need to mask out 0xFF.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

Merge branch 'master' of ozlabs.org:ccan

io: closing one side of a duplex connection closes both.

Otherwise, it's a PITA to close a duplexed connection.  If necessary we
can introduce a half-close to de-deplex later.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

cpuid: parse L1 cache information for AMD.

Also take out additional feature information from processor information
and feature bits since they can be tested using cpuid_test_feature() and
cpuid_has_feature()

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: small fix for non x86-cpus

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

Merge branch 'master' of ozlabs.org:ccan

list: fix list_prev and list_next on const lists.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

cpuid: prefix cpuid_t enums with CPUID_* instead of CPU_*

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: drop support for testing extended features

For now, we will just test for normal features, later on it'll be added
back.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: fix for MSVC in cpuid_is_supported()

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: parse additional feature information for pCPU_PROCINFO_AND_FEATUREBITS

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: better parser for processor info

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

io: fix port clash in test.

Both run-set_alloc and run-15-timeout used the same port, so they sometimes
got stuck when running in parallel.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

daemonize / daemon_with_notify: ignore Ubuntu 13.10 brain death.

Apparently init --user adopts orphans.  To quote the author
Stewart Smith:

  As much as one can be happy in Ubuntu breaking something that has been
  true for what must be approaching 40 years, yep, I'm happy for you to
  make the changes.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

time: to/from sec conversions.

Trivial, but they make coding easier and more predictable.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Merge branch 'master' of ozlabs.org:ccan

cpuid: Use __asm for MSVC

MSVC only supports inline assembly and does not support the keyword
volatile for assembly.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: use a sprintf-like function to get cputype as a string

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: avoid unions in parsing data

This is a much more cleaner way to do it and _should_ be easier for people
to use.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: apply the 32-bit fix

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

io: add io_conn_fd()

Useful for getsockname().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

io: io_set_alloc()

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: make union more generic.

I really wanted an array of bytes in there, so make it more flexible.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Merge branch 'master' of ozlabs.org:ccan

Merge branch 'io'

ccan/io: add examples.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: io_connect()

Not a perfect solution (we'd ideally want to go to another plan
immediately, but that would involve a malloc).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: flatten debug callchain further.

Don't call through io_loop, but have it pass the connection back
and call manually.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: flatten debug callchain.

Don't call from the plan-construction function, call after it returns.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: update and improve documentation.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: save errno on io_close, for finish functions.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: handle errors on poll()

Without this, closing an fd results in a spin...

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: io_close_cb()

Overloading io_close() as a callback is ugly: create an explicit
io_close_cb().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: simplify I/O callbacks.

Use a -1 for error codes.  This makes it easier to write your own io funcs.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: io_set_finish()

Rather than insisting on supplying them on every call to io_new_conn().
Also, this way it can be changed on a connection.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: test custom io functions.

And rename debug_io_plan() to io_plan_debug() so it can be exposed.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: go linear for debugging.

Debugging an async library is a pain: it's nice to force it into a
linear call chain to try to track problems.

Ugly code, though.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: test read after hangup.

In particular, make sure that idle connections don't get closed.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: simplify do_ready.

Have it set the plan itself, rather than passing it back.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: make io functions more generic.

Pass fd and plan explicitly, so they don't need to know the definition
of struct io_conn, and return a bool instead of an enum.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: remove io_state.

Use a NULL next pointer instead to indicate a closing connection.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: remove IO_IDLE state.

Use a NULL io pointer instead to indicate an idle connection.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: remove IO_NEXT state.

It was only used for initial connections which hadn't started I/O.  Now
they are initialized with an io_plan, it can be eliminated.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: initialize connection with an explicit I/O plan.

Rather than going via a callback, which tends to just set up I/O, do
any setup before the call to io_new_conn(), then pass it the io_plan
directly.

The patch shows how much this simplifies our test code.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: generic init function for listening connections.

Instead of assuming they want a connection made from the new fd, hand
the fd to a callback.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: remove conn arg from io_plan constructors.

No longer needed.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: pass struct io_plan explicitly.

This simplifies some things: in particular, we can construct an
io_plan without needing the current io_conn.

On the other hand, we need to expose the structure now.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: replace backend_set_state with backend_wakeup()

We only use it in one place: for wakeup.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: make enum io_state namespace-safe.

Ready for exposure.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: use explicit IO callback functions, instead of io_state values.

Explicit callbacks are slower, but more flexible.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: remove next & finish from union.

Sure, both listener and conn need them, but for different things
(listener uses them simply to set up conn).  Putting them in the
common union was a mistake.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: put explicit poll flags in the plan.

Weaning off enum io_state, to allow custom ones.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: get rid of io_next(), pass callbacks directly.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: rename io_op to io_plan.

This is a better description, since it's I/O we plan to do next.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: timer support.

Upgrade license, since timer is LGPL.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: check for all idle.

It's probably a bug if we're waiting for nothing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: io_duplex.

Cleaner model for I/O, with cost of complexity if you really want bidir.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: benchmarks.

More stress test than benchmarks, but provides a beginning.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/io: new module.

Designed for async I/O.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

cpuid: minor fixes

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: cache processor brand string

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: remove the static func has_feature

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: fix build on 64-bit systems

Some instructions needed to use their correct prefix and correct
registers, such as "eax -> rax" and "pushl -> pushq"

Reported-by: Emilio G. Cota <cota@braap.org>
Tested-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

net: add async operation helpers.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

net: fix leak in test.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

opt: add allocator setting.

Good for tal usage.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

cpuid: ccanlint fixes.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Merge branch 'cpuid' of https://github.com/decltype/ccan

cpuid: parse CPU L1 cache and TLB identifications

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: use uint32_t instead of int/unsigned

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: small fix

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: Minor improvements

Remove the assembly file that checks if the CPUID instruction is
supported and have it in inline assembly as suggested by Rusty.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

net: Fix potential uninitialized use of variables in net_bind()

If the list of addrinfos give to net_bind() contains only IPv4 or only
IPv6 addresses, then the ipv4 and ipv6 variables may be used uninitialized.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

cpuid: only compile source file if x86 cpu

Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: prefix every function with cpuid_

Also merge extended features and non-extended in 1 function.

Suggested-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: add 2 new functions + some more tests

The new functions are:
- get_cpu_type
- get_cpu_type_string

Also add more tests on how one would parse the low-level stuff.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: add proper documentation

Forgot to add this to the main commit, sorry.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

cpuid: new module

This module parses data provided by the cpuid instruction.
It still needs more work, however, it works for most important
stuff.

Signed-off-by: Ahmed Samy <f.fallen45@gmail.com>

Merge branch 'master' of ozlabs.org:ccan

Add bitmap module to Makefile.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Merge https://github.com/dgibson/ccan

heap: add example on empty heap check

Suggested-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Emilio G. Cota <cota@braap.org>

heap: new module

Signed-off-by: Emilio G. Cota <cota@braap.org>

ilog: reformat so webpage doesn't get confused.

The extra spaces make my web formatter think they're literal text, which
looks weird.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ilog: relicense to Public Domain.

I noted to Timothy in 2011:
   I finally got around to implementing license checking in ccanlint,
   and it shows that your public domain ccan/isaac module uses your LGPL
   ccan/ilog module, which partially defeats the point.

   You and I are the only ones who did anything significant to ilog; I'm
   happy to relicense to PD or whatever else you want.  Or leave it, in
   which case I'll need to document it clearly.

He finally got back to me, and I sent him this patch, to which he replied:

     Ack.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tal: add tal_resizez for zero-padded expansion.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

endian: add documentation on endian typedefs.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

short_types: update documentation on be32/le32 etc.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>