This patch uses boost::asio::ip::address* to cleanup the core dhcp code.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

bsd's ifconf conflicts with osv's; rename it.

We use the bsd version in <osv/ioctl.h>, since we currently don't support
the Linux-ABI variants of these ioctls.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

The bsd ifaddr struct conflicts with the osv ifaddr struct, which is a
public interface.  Rename the bsd struct to avoid conflict.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

Workaround a bytorder function conflict, and reconcile a declaration.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

Some structures are duplicated; move the duplicates to a common header
<netinet/__in.h>.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

Some structures are duplicated; deduplicate them.

A few are source-compatible but not binary-compatible; use the ones from
<bits/socket.h>.

Others are both source- and binary- compatible; put them in a new header
<sys/__socket.h> which is included from both.

Work around a problem with the byteorder functions/macros.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Tested-By: Benoit Canet <benoit@irqsave.net>

Used somewhere within libcurses, so provide an implementation.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

The README contained out-of-date examples of how to run things in OSv.
Fixed those.

BTW, Much of the contents of the README don't really belong there. We already
have separate documents for debugging in OSv, and how to compile C/C++
code for OSv, and these should probably be in documentation/ in the
git repository, instead of in a Wiki or Google docs.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

This patch adds a few simple terminal-related libc functions that ncurses
requires (needed to run curses-based applications on OSv).

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Allow specify test names to testrunner such as testrunner.so tst-foo1.so
tst-foo2.so to run tst-foo1 and tst-foo2 only in the order they are
specified. This does not change the default behavior that
cmdline=testrunner.so will run all tests under /tests dir.

This change can help developer to run the only test cases they need
quickly to verify new feature or find possible regressions.

Signed-off-by: Yang Bai <hamo.by@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Exit tracepoints are useful to record errors, and also for timing the
mmap operation.

Signed-off-by Pekka Enberg <penberg@cloudius-systems.com>

The page_size constant is not used in the code so lets just remove it.

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Added missing bench.jar file back to the image.
Fixed an obsolete description in the README file.

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>

Fork project on github will cause submodule trying to
fetch submodule under fork user not cloudius-system.

Signed-off-by: Yang Bai <hamo.by@gmail.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

In preparation for enabling demand paging, enable sleeping in fault
context by using a per-thread exception stack for normal faults and
per-CPU exception stack for nested faults.

Avi Kivity explains:

  Before [demand paging] can even hope to work, we need to enable
  sleeping in fault context.  Right now each cpu has its own exception
  stack, which leads immediately to stack corruption:

  thread 1 faults
  enters exception stack
  tries to take mutex
  scheduler switches to thread 2
  thread 2 faults
  enters same exception stack

  So we need to switch stacks.  This can be done in the same way as for
  interrupt stacks (see thread::switch_to()).

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Before:

  [penberg@localhost osv]$ time make clean
    CLEAN
    GRADLE CLEAN

  real	0m4.026s
  user	0m8.732s
  sys	0m0.212s

After:

  [penberg@localhost osv]$ time make clean
    CLEAN
    GRADLE CLEAN

  real	0m1.658s
  user	0m0.962s
  sys	0m0.162s

Signeg-off-by: Pekka Enberg <penberg@cloudius-systems.com>

- faster builds

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Removing loader.img causes a null build to rebuild it and usr.img.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Drop implicit makefile rules; this prevents make from looking for fortran
source files, etc.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Fixes the following warning on OSv startup:

  Warning: default mime table not found: /usr/lib/jvm/jre/lib/content-types.properties

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Make kvmclock::probe() easier to follow by simplifying the processor
feature checks.

Cc: Venkatesh Srinivas <venkateshs@google.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

Older versions of KVM and user VMMs expose kvmclock MSRs at different
MSR offsets. Detect the old flag in kvmclock::probe() and use the old
MSRs if they are the only ones available.

Signed-off-by: Venkatesh Srinivas <venkateshs@google.com>
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Speeds up mgmt null build considerably

Add a comment to condvar explaining that it makes a guarantee that
POSIX Threads' condition variables do not - that there are no spurious
wakeups.

The comment goes on to explain that at least in one place (semaphore.cc)
we make use of this added guarantee, so if the condition variable
implementation is ever rewritten, we'll need to keep this guarantee.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Add "-version" option to RunJava, and therefore to java.so and the "java"
CLI command.

java -version now shows:

  java version "1.7.0_25"
  OpenJDK Runtime Environment (1.7.0_25-mockbuild_2013_07_27_13_36-b00)
  OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

I can't explain why the version on the second line is different than what
"java -version" on Fedora 18 shows for the same libjvm.so:

  java version "1.7.0_25"
  OpenJDK Runtime Environment (fedora-2.3.10.4.fc18-x86_64)
  OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

  1. MSI-X printous fixed
  2. Duplicate EOLs removed

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>

Change the name of the argument of wake_with from "Pred" to "Action".
This argument is a function to run, *not* a predicate (it's not supposed
to return a boolean value), so it doesn't make sense to call it Pred.

The implementation of wake_with already used the name "Action" - this
patch fixes the prototype too.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

  1. Netperf patch removed from repository
  2. Documentation updated

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

This patch adds support for Linux's alarm(2) system call.

alarm() is needed in some ancient Unix software, like netperf :(

This implementation is fully compatible with Linux's alarm(), but please
note that what alarm() does when the alarm times out is a kill(SIGALRM) -
so all the caveats mentioned in the previous patch regarding kill(),
will also apply here.

Alarm() is implemented by running one "alarm thread", started on the
first alarm() call. This alarm-thread waits for the alarm to expire,
or for instructions to change the alarm. When an alarm expires the
alarm thread does a kill(0,SIGALRM).

tst-kill.cc (from the previous patch) includes a test to see that
alarm() really sends a SIGALRM signal on time, and also that we can
cancel a pending alarm and not receive a signal.

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Some fixups to --trace-backtrace, plus symbol resolution in the log output.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

This patch adds support for the Linux kill(2) function.
The next patch will add alarm(2) support, which uses kill(2).

To be honest, we sort-of implement kill(). This implementation is
compatible with the API, but the semantics are somewhat different:
While in Linux kill() causes the signal handler to run on one of the
existing threads, in this implementation, the signal handler is run in a
*new* thread.

Implementing the exact Linux semantics in OSv would require tracking when
OSv runs kernel code (i.e., code in the main executable, not a shared
object) so we can delay running the signal handler until returning to the
user code. Moreover, we'll need to be able to interrupt sleeping kernel
code. This is complicated and adds overhead even if signals aren't used
(and they aren't used in most modern code).

I expect that this code will be "good enough" in many use cases.
This code will *not* be good in enough in programs that expect one of the
following:

1. A program that by using Posix Thread's "signal masks" tried to ensure
   that the signal is delivered to one specific thread, and not to an
   arbitrary thread.

2. A program that used kill() or alarm() not intending to run a signal
   handler, but rather intending to interrupt a sleeping system call
   like sleep() or read(). Our kill() does not interrupt sleeping OSv
   function calls, which will continue to sleep on the thread they run
   on.

The support in this patch (and see next patch, for alarm()) is good
enough for netperf's use of alarm().

P.S. kill() can be used only to send a signal to the current process, the
only process we have in OSv (you can also use pid=0 and pid=-1 to achieve
the same results).

This patch also adds a test for kill() and alarm(). The alarm() test
will fail until the next patch :-)

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Looking up symbols is expensive, store them in a cache.

Speeds up dumping the trace log when a backtrace is taken.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

Also fix other review comments related to 1f161695.

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>

The correct range is elf_start:(elf_start + elf_size - 1)

Signed-off-by: Raphael S.Carvalho <raphael.scarv@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>