c11tester.git
9 years agomodel: silence "uninitialized" warning
Brian Norris [Thu, 1 Nov 2012 17:58:11 +0000 (10:58 -0700)]
model: silence "uninitialized" warning

9 years agomodel: update mo_may_allow restrictions
Brian Norris [Thu, 1 Nov 2012 17:38:49 +0000 (10:38 -0700)]
model: update mo_may_allow restrictions

For future values, we can enforce the following rule:

  If X --hb-> Y --mo-> Z, then X should not read from Z.

This a change from previous behavior, where we used 'sb' instead of
'hb'.

Tested with linuxrwlocks example:

  ./run.sh test/linuxrwlocks.o -f 4 -m 1

No difference in number of executions (feasible or infeasible); HASH
values were exactly the same.

9 years agotests: add thinair test
Brian Norris [Mon, 29 Oct 2012 18:44:52 +0000 (11:44 -0700)]
tests: add thinair test

9 years agoMakefile/malloc: don't warn for self-assign
Brian Norris [Mon, 29 Oct 2012 18:23:26 +0000 (11:23 -0700)]
Makefile/malloc: don't warn for self-assign

9 years agoMakefile: use -rdyanmic only for linking
Brian Norris [Mon, 29 Oct 2012 18:19:28 +0000 (11:19 -0700)]
Makefile: use -rdyanmic only for linking

I ignored this part of the GCC manpage:

  "Pass the flag -export-dynamic to the ELF linker..."

9 years agotests: use signed printf format
Brian Norris [Mon, 29 Oct 2012 18:09:12 +0000 (11:09 -0700)]
tests: use signed printf format

9 years agochanges to allow running programs with racing initialization...
Brian Demsky [Fri, 26 Oct 2012 23:31:20 +0000 (16:31 -0700)]
changes to allow running programs with racing initialization...

9 years agocheck in test
Brian Demsky [Thu, 25 Oct 2012 23:28:19 +0000 (16:28 -0700)]
check in test

9 years agoadd test from nitpick paper...
Brian Demsky [Thu, 25 Oct 2012 23:25:09 +0000 (16:25 -0700)]
add test from nitpick paper...

9 years agoembarrassing bug...fixed...
Brian Demsky [Thu, 25 Oct 2012 04:37:02 +0000 (21:37 -0700)]
embarrassing bug...fixed...

9 years agomodel: fix - RMW cannot break release sequences
Brian Norris [Fri, 19 Oct 2012 22:27:37 +0000 (15:27 -0700)]
model: fix - RMW cannot break release sequences

I misinterpreted the spec's description of release sequences.

9 years agoDoxygen: document subdirectories
Brian Norris [Fri, 12 Oct 2012 18:05:26 +0000 (11:05 -0700)]
Doxygen: document subdirectories

Document include/, but ignore doc/, benchmarks/, and test/.

9 years agothread_id_t: add comments
Brian Norris [Fri, 12 Oct 2012 18:05:12 +0000 (11:05 -0700)]
thread_id_t: add comments

9 years agofixup 'int' vs. 'thread_id_t' usage
Brian Norris [Fri, 12 Oct 2012 17:52:00 +0000 (10:52 -0700)]
fixup 'int' vs. 'thread_id_t' usage

9 years agomodeltypes: move to include/ dir, for now
Brian Norris [Fri, 12 Oct 2012 17:24:18 +0000 (10:24 -0700)]
modeltypes: move to include/ dir, for now

The <mutex> header uses some small amount of private model-checker
information, so just move the common typedefs to our external include/
directory.

9 years agomutex: define empty destructor
Brian Norris [Fri, 12 Oct 2012 17:21:41 +0000 (10:21 -0700)]
mutex: define empty destructor

I don't think we really need the destructor. It causes undefined
reference compilation errors though:

  ... undefined reference to `std::mutex::~mutex()'

9 years agocondition_variable: move header
Brian Norris [Fri, 12 Oct 2012 17:14:44 +0000 (10:14 -0700)]
condition_variable: move header

Move from "conditionvariable.h" to "include/condition_variable". This
allows the normal C++11 #include syntax of:

  #include <condition_variable>

9 years agoadd two test cases
Brian Demsky [Fri, 12 Oct 2012 06:56:40 +0000 (23:56 -0700)]
add two test cases

9 years agoforgot to add two files...
Brian Demsky [Fri, 12 Oct 2012 06:56:12 +0000 (23:56 -0700)]
forgot to add two files...
bug fixes...

9 years agocommit untested condvar code
Brian Demsky [Fri, 12 Oct 2012 05:51:45 +0000 (22:51 -0700)]
commit untested condvar code

9 years agoMerge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker
Brian Demsky [Fri, 12 Oct 2012 05:01:33 +0000 (22:01 -0700)]
Merge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker

9 years agomove other interface headers to include/
Brian Norris [Fri, 12 Oct 2012 00:08:20 +0000 (17:08 -0700)]
move other interface headers to include/

We want all external interface headers (i.e., any #include'd in user
programs) to be in the include/ directory.

9 years agocompiles with condition variables file added...
Brian Demsky [Thu, 11 Oct 2012 23:54:20 +0000 (16:54 -0700)]
compiles with condition variables file added...
still need model checker support

9 years agomutex: move mutex.h to standard name/location
Brian Norris [Thu, 11 Oct 2012 23:48:39 +0000 (16:48 -0700)]
mutex: move mutex.h to standard name/location

The important exported interfaces should be in the include/ dir. Also,
C++11 programs should use this header as:

    #include <mutex>

9 years agoinclude/: add small header comments
Brian Norris [Thu, 11 Oct 2012 17:28:22 +0000 (10:28 -0700)]
include/: add small header comments

9 years agoimpatomic: add multiple-inclusion guards
Brian Norris [Thu, 11 Oct 2012 17:18:18 +0000 (10:18 -0700)]
impatomic: add multiple-inclusion guards

9 years agoaction: improve printing
Brian Norris [Thu, 11 Oct 2012 02:24:29 +0000 (19:24 -0700)]
action: improve printing

The 'value' field of a ModelAction might actually represent a signed
number, a pointer, or something else entirely, so values look very huge
and uninformative when printed, especially in decimal. Hexadecimal
representation makes everything a little more readable, I think.

While I'm at it, I adjust the spacing a little and make VALUE_NONE into
a different magic number which is more recognizable in hex.

9 years agoMakefile: add benchmarks to top-level
Brian Norris [Wed, 10 Oct 2012 23:01:30 +0000 (16:01 -0700)]
Makefile: add benchmarks to top-level

9 years agosegfault file/line breakpoint info
Brian Norris [Wed, 10 Oct 2012 22:42:27 +0000 (15:42 -0700)]
segfault file/line breakpoint info

This can give easy info for using gdb. e.g.:

    For debugging, place breakpoint at: snapshot.cc:92

9 years agoMerge remote-tracking branch 'origin/master'
Brian Norris [Wed, 10 Oct 2012 22:21:32 +0000 (15:21 -0700)]
Merge remote-tracking branch 'origin/master'

9 years agoimpatomic: add strong/weak compare_exchange
Brian Norris [Wed, 10 Oct 2012 22:16:59 +0000 (15:16 -0700)]
impatomic: add strong/weak compare_exchange

According to n2748.html, there was a change to allow spurious failure of
compare_exchange operations. Thus, there is no longer a
compare_exchange() operation, but rather a pair of
compare_exchange_{strong,weak)(). I resolve this for compilation
purposes now by editing the impatomic header (mostly with Vim macros for
patterned copy-paste-substitute) and adding an _ATOMIC_CMPSWP_WEAK_
macro, which is just an alias for _ATOMIC_CMPSWP_. Thus, we don't
simulate spurious failure yet.

See:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2748.html

9 years agomake scheduler choose fair schedules when threads with priority are sleeping...
Brian Demsky [Wed, 10 Oct 2012 21:33:30 +0000 (14:33 -0700)]
make scheduler choose fair schedules when threads with priority are sleeping...

9 years agoaction: add NULL dereference assertion
Brian Norris [Wed, 10 Oct 2012 18:43:52 +0000 (11:43 -0700)]
action: add NULL dereference assertion

In user programs, we might find a NULL atomic object being dereferenced,
causing strange model-checker behavior which will track memory address 0
as an atomic object. This may result in apparently-uninitialized
variables, for instance.

So, just nip these in the bud with an assertion. Perhaps these things
can transformed into some more informative type of warning in the
future, where user-visible bugs might print helpful messages.

9 years agothreads: correct 'thrd_yield()'
Brian Norris [Wed, 10 Oct 2012 18:41:38 +0000 (11:41 -0700)]
threads: correct 'thrd_yield()'

The C11 thrd_yield() interface should return void. Also, it doesn't need
to do anything in our model-checker for now. I'm leaving its
implementation commented out for now, in case we find it helps for
fairness, for instance. Note that I made its location parameter non-NULL
now, too, so that we can identify the Thread, if we ever use it.

9 years agoMerge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker
Brian Demsky [Wed, 10 Oct 2012 01:10:37 +0000 (18:10 -0700)]
Merge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker

9 years agomake linux_rw locks work again
Brian Demsky [Wed, 10 Oct 2012 01:10:10 +0000 (18:10 -0700)]
make linux_rw locks work again

9 years agoMerge remote-tracking branch 'origin/master'
Brian Norris [Wed, 10 Oct 2012 00:58:32 +0000 (17:58 -0700)]
Merge remote-tracking branch 'origin/master'

9 years agoimpatomic: rename all 'swap' to 'exchange'
Brian Norris [Wed, 10 Oct 2012 00:55:31 +0000 (17:55 -0700)]
impatomic: rename all 'swap' to 'exchange'

n2427.html seems to have some very old definitions. I think this all
should be 'exchange', not 'swap'.

Note that there are other issues where we don't have the correct
function names available. But this fixes some of the problems.

9 years agofix some of the bugs related to barrier example...
Brian Demsky [Wed, 10 Oct 2012 00:54:43 +0000 (17:54 -0700)]
fix some of the bugs related to barrier example...

9 years agoinclude: add multiple-inclusion guards
Brian Norris [Wed, 10 Oct 2012 00:48:56 +0000 (17:48 -0700)]
include: add multiple-inclusion guards

9 years ago.gitignore: ignore 'benchmarks' folder
Brian Norris [Tue, 9 Oct 2012 23:30:43 +0000 (16:30 -0700)]
.gitignore: ignore 'benchmarks' folder

Now, you can clone the benchmarks repository under the name 'benchmarks'
and have it compile-ready (but ignored by this repository) with:

  git clone <URI/model-checker-benchmarks.git> benchmarks
  cd benchmarks
  make

Future updates can be pulled in via a 'git pull' from that directory:

  cd benchmarks
  git pull

9 years agotests: use <stdatomic.h>
Brian Norris [Tue, 9 Oct 2012 21:10:45 +0000 (14:10 -0700)]
tests: use <stdatomic.h>

While I'm at it, rearrange the header listings.

9 years agomove libthreads.h -> include/threads.h
Brian Norris [Tue, 9 Oct 2012 19:09:02 +0000 (12:09 -0700)]
move libthreads.h -> include/threads.h

Helps user programs to be able to just use C11 <threads.h>

9 years agorename threads.h -> threads-model.h
Brian Norris [Tue, 9 Oct 2012 19:05:32 +0000 (12:05 -0700)]
rename threads.h -> threads-model.h

There's a name conflict with the C11 <threads.h>
We might as well just avoid the conflict entirely

9 years agoinclude: add <atomic> header
Brian Norris [Tue, 9 Oct 2012 19:02:42 +0000 (12:02 -0700)]
include: add <atomic> header

9 years agodid a little more looking at infeasible executions...
Brian Demsky [Tue, 9 Oct 2012 06:35:21 +0000 (23:35 -0700)]
did a little more looking at infeasible executions...
another obvious property we missed...kills about 1/3 of the infeasible executions...

9 years agomodel: JOIN/LOCK unification
Brian Norris [Wed, 3 Oct 2012 19:07:33 +0000 (12:07 -0700)]
model: JOIN/LOCK unification

Make join and lock actions use similar code paths.

This used to trigger a bug, due to the lack of a private snapshotting
heap.

9 years agodatarace: reformat datarace printing
Brian Norris [Tue, 9 Oct 2012 02:34:43 +0000 (19:34 -0700)]
datarace: reformat datarace printing

9 years agothreads: allocate on user's snapshotting heap
Brian Norris [Tue, 9 Oct 2012 01:59:26 +0000 (18:59 -0700)]
threads: allocate on user's snapshotting heap

The following comment is included in threads.h to explain this choice:

  Intentionally NOT allocated with MODELALLOC or SNAPSHOTALLOC. Threads
  should be allocated on the user's normal (snapshotting) heap to allow
  their allocation/deallocation to follow the same pattern as the rest
  of the backtracked/replayed program.

This fix solves problems seen in certain test programs regarding a
Thread being allocated in different locations for different executions.

9 years agoschedule: bugfix - fix typo in wake
Brian Norris [Tue, 9 Oct 2012 01:42:22 +0000 (18:42 -0700)]
schedule: bugfix - fix typo in wake

The Thread should be re-enabled, not disabled, when waking up.

9 years agouser_main: pass remaining arguments to the user program
Brian Norris [Tue, 9 Oct 2012 01:36:06 +0000 (18:36 -0700)]
user_main: pass remaining arguments to the user program

9 years agomain: rename 'real_main()' to 'model_main()'
Brian Norris [Tue, 9 Oct 2012 01:34:35 +0000 (18:34 -0700)]
main: rename 'real_main()' to 'model_main()'

9 years agomistake
Brian Demsky [Tue, 9 Oct 2012 00:20:20 +0000 (17:20 -0700)]
mistake

9 years agobe much more careful about sending values backwards...
Brian Demsky [Tue, 9 Oct 2012 00:19:32 +0000 (17:19 -0700)]
be much more careful about sending values backwards...

also implement hashing for traces...just an easy way to confirm whether we lose new traces...

9 years agobe even more aggressive about sleep sets...
Brian Demsky [Mon, 8 Oct 2012 21:48:47 +0000 (14:48 -0700)]
be even more aggressive about sleep sets...
if an action was sleeping, it should only read from a value that could potentially result in synchronization with a release done while it was sleeping

9 years agomymemory: re-indent
Brian Norris [Mon, 8 Oct 2012 20:53:42 +0000 (13:53 -0700)]
mymemory: re-indent

9 years agomodel: stack-allocated vector should use ModelAlloc
Brian Norris [Mon, 8 Oct 2012 20:51:58 +0000 (13:51 -0700)]
model: stack-allocated vector should use ModelAlloc

9 years agoutilize SnapshotAlloc STL allocator
Brian Norris [Mon, 8 Oct 2012 20:46:11 +0000 (13:46 -0700)]
utilize SnapshotAlloc STL allocator

9 years agomymemory: add SnapshotAlloc STL allocator
Brian Norris [Mon, 8 Oct 2012 20:36:11 +0000 (13:36 -0700)]
mymemory: add SnapshotAlloc STL allocator

Now, we just need to go through the tedious process of rewriting all our
STL definitions

9 years agomymemory: implement snapshot_*() allocations on model-checker's heap
Brian Norris [Mon, 8 Oct 2012 20:26:57 +0000 (13:26 -0700)]
mymemory: implement snapshot_*() allocations on model-checker's heap

9 years agomymemory: add basic model_snapshot_space
Brian Norris [Mon, 8 Oct 2012 20:26:07 +0000 (13:26 -0700)]
mymemory: add basic model_snapshot_space

I will begin to utilize the 'model_snapshot_space' as the
model-checker's private snapshotting heap.

9 years agorename again (snapshot_space -> user_snapshot_space)
Brian Norris [Mon, 8 Oct 2012 20:04:24 +0000 (13:04 -0700)]
rename again (snapshot_space -> user_snapshot_space)

I will be adding a separate model_snapshot_space

9 years agomymemory: kill system_malloc()
Brian Norris [Mon, 8 Oct 2012 20:11:13 +0000 (13:11 -0700)]
mymemory: kill system_malloc()

Not needed

9 years agosnapshot: use snapshot_space only in mprotect-based
Brian Norris [Mon, 8 Oct 2012 19:58:01 +0000 (12:58 -0700)]
snapshot: use snapshot_space only in mprotect-based

We don't need this heap for fork-based snapshotting, so clearly separate
the functionality here.

This also makes PageAlignedAdressUpdate() available only for
mprotect-based snapshotting.

9 years agosnapshot: don't need any snapshotting space for fork-based
Brian Norris [Mon, 8 Oct 2012 19:46:53 +0000 (12:46 -0700)]
snapshot: don't need any snapshotting space for fork-based

I have no idea why this was here in the first place. Somebody didn't
know what they were doing...

9 years agorename 'mySpace' to 'snapshot_space'
Brian Norris [Mon, 8 Oct 2012 19:38:53 +0000 (12:38 -0700)]
rename 'mySpace' to 'snapshot_space'

9 years agomymemory: make DontFree() static
Brian Norris [Mon, 8 Oct 2012 19:34:22 +0000 (12:34 -0700)]
mymemory: make DontFree() static

9 years agomymemory: reformat spacing
Brian Norris [Mon, 8 Oct 2012 19:30:06 +0000 (12:30 -0700)]
mymemory: reformat spacing

9 years agomymemory: kill system_free()
Brian Norris [Mon, 8 Oct 2012 19:21:15 +0000 (12:21 -0700)]
mymemory: kill system_free()

This function is not used

9 years agosnapshot: remove global 'basemySpace'
Brian Norris [Mon, 8 Oct 2012 19:13:07 +0000 (12:13 -0700)]
snapshot: remove global 'basemySpace'

Why was this here?

9 years agotest: linuxrwlocks: fixup spacing
Brian Norris [Mon, 8 Oct 2012 17:31:41 +0000 (10:31 -0700)]
test: linuxrwlocks: fixup spacing

9 years agomodel: remove todo
Brian Norris [Mon, 8 Oct 2012 17:25:29 +0000 (10:25 -0700)]
model: remove todo

9 years agomerge massive speedup with release sequence support...
Brian Demsky [Mon, 8 Oct 2012 08:21:35 +0000 (01:21 -0700)]
merge massive speedup with release sequence support...

Merge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker

Conflicts:
schedule.cc
schedule.h

9 years agoadd support for sleep sets...
Brian Demsky [Mon, 8 Oct 2012 08:15:06 +0000 (01:15 -0700)]
add support for sleep sets...

9 years agotest: add "double release sequence" test
Brian Norris [Mon, 8 Oct 2012 06:30:48 +0000 (23:30 -0700)]
test: add "double release sequence" test

This test uses two separate load-acquire's to establish the same release
sequence. This can cause problems with the current release sequence
fixups, so that we find an execution where one synchronizes and the
other doesn't, even when reading from the same sequence.

9 years agoMerge branch 'norris'
Brian Norris [Mon, 8 Oct 2012 06:25:48 +0000 (23:25 -0700)]
Merge branch 'norris'

9 years agomodel: add todo synchronization comment
Brian Norris [Mon, 8 Oct 2012 06:24:21 +0000 (23:24 -0700)]
model: add todo synchronization comment

9 years agomodel: be sure trace is "final feasible" before continuing to fixup
Brian Norris [Mon, 8 Oct 2012 06:16:03 +0000 (23:16 -0700)]
model: be sure trace is "final feasible" before continuing to fixup

Release sequences fixup can break pretty badly if there are outstanding
promises. Solution: check for final-feasible traces before continuing to
fixup.

9 years agotests: add some normal loads/stores to test data races
Brian Norris [Mon, 8 Oct 2012 05:19:01 +0000 (22:19 -0700)]
tests: add some normal loads/stores to test data races

These tests had become less useful, since the model-checker would ignore
release sequence fixup in the absence of pending data races. So add some
normal loads and stores to our tests, inducing some data races and some
proper synchronization.

9 years agomodel: check data races during release sequence fixup
Brian Norris [Mon, 8 Oct 2012 05:17:12 +0000 (22:17 -0700)]
model: check data races during release sequence fixup

This solves two problems:

1. I wasn't even checking for resolved data races after fixing up
   release sequence(s)

2. Launching of release sequence fixups now requires that there be
   pending data races

9 years agomodel: add release sequence model_thread ASSERT()
Brian Norris [Sun, 7 Oct 2012 22:23:37 +0000 (15:23 -0700)]
model: add release sequence model_thread ASSERT()

This ASSERT() should ensure that model-checker threads are always
'future_ordered'.

9 years agomodel: launch release sequence fixup actions when necessary
Brian Norris [Sat, 6 Oct 2012 02:20:21 +0000 (19:20 -0700)]
model: launch release sequence fixup actions when necessary

This should complete the "release sequence fixup" step. The ModelChecker
will launch new fixup actions, associating them with the special
'model_thread'.

9 years agomodel: add special model-checker Thread to ModelChecker
Brian Norris [Sat, 6 Oct 2012 02:18:13 +0000 (19:18 -0700)]
model: add special model-checker Thread to ModelChecker

Note the change in take_step(), so that we base the "current thread" off
of the provided ModelAction, rather than thread_current() (i.e., the
Scheduler). This is because the Scheduler will never run the
model-checker thread.

9 years agoschedule: do not allow model-checker thread to enter scheduler
Brian Norris [Sat, 6 Oct 2012 01:29:45 +0000 (18:29 -0700)]
schedule: do not allow model-checker thread to enter scheduler

9 years agothreads: add constructor for model-checker thread
Brian Norris [Sat, 6 Oct 2012 00:50:37 +0000 (17:50 -0700)]
threads: add constructor for model-checker thread

This thread will never have its own stack, and it should never be
inserted into the Scheduler.

9 years agothreads: add flag for a special type of "model-checker thread"
Brian Norris [Sat, 6 Oct 2012 00:42:03 +0000 (17:42 -0700)]
threads: add flag for a special type of "model-checker thread"

Special model-checker thread(s) might be needed when producing special
model-checker ModelActions.

9 years agoaction: add Thread parameter to constructor
Brian Norris [Sat, 6 Oct 2012 00:39:49 +0000 (17:39 -0700)]
action: add Thread parameter to constructor

We will need to create ModelActions that are forced to associate with a
specific Thread (contrary to the Scheduler's knowledge), so add a
constructor parameter.

9 years agomodel: add process_relseq_fixup()
Brian Norris [Fri, 5 Oct 2012 07:07:10 +0000 (00:07 -0700)]
model: add process_relseq_fixup()

This performs the bulk of the release sequence finalization step.

9 years agocommon: improve backtrace function
Brian Norris [Sat, 6 Oct 2012 02:34:01 +0000 (19:34 -0700)]
common: improve backtrace function

Utilize freely-available backtrace function that helps make output more
readable. Previous implementation is kept for now, as it is simpler and
more well-tested.

9 years agoadd stacktrace header, under WTFPL
Brian Norris [Sat, 6 Oct 2012 02:28:19 +0000 (19:28 -0700)]
add stacktrace header, under WTFPL

Download:
http://idlebox.net/2008/0901-stacktrace-demangled/stacktrace.h

WTFPL:
http://sam.zoy.org/wtfpl/

9 years agomodel: wire up rest of release seq. resolution backtracking
Brian Norris [Sun, 7 Oct 2012 23:18:07 +0000 (16:18 -0700)]
model: wire up rest of release seq. resolution backtracking

I still need to actually initiate the special ModelAction fixups.

9 years agonodestack: add release sequence breakage backtracking
Brian Norris [Sun, 7 Oct 2012 23:12:00 +0000 (16:12 -0700)]
nodestack: add release sequence breakage backtracking

End-of-execution resolution of release sequences requires a search
procedure in which we test various attempts at breaking our pending
release sequences. This provides the NodeStack infrastructure.

9 years agoaction: add MODEL_FIXUP_RELSEQ action_type
Brian Norris [Fri, 5 Oct 2012 05:38:37 +0000 (22:38 -0700)]
action: add MODEL_FIXUP_RELSEQ action_type

This type will be used as a special model-checker action for fixing up
release sequences. Each action corresponds to "finalizing" one release
sequence: either force a particular write to break the sequence or else
allow the synchronization to occur.

Currently, this action_type won't do anything, as it's not hooked up in
ModelChecker.

9 years agomodel: disabled threads are "future ordered"
Brian Norris [Sun, 7 Oct 2012 22:04:08 +0000 (15:04 -0700)]
model: disabled threads are "future ordered"

If a Thread is not currently enabled, then it will synchronize with
another (currently-enabled) Thread if/when it wakes up. Thus, it
qualifies as "future ordered" within the release sequence code: it
cannot contribute future writes that will break current pending release
sequences.

9 years agomodel: use proper size_t printf format
Brian Norris [Sun, 7 Oct 2012 22:02:16 +0000 (15:02 -0700)]
model: use proper size_t printf format

9 years agoschedule: add is_enabled() function
Brian Norris [Sun, 7 Oct 2012 21:57:42 +0000 (14:57 -0700)]
schedule: add is_enabled() function

The release sequence functionality needs to check whether a Thread is
currently enabled (rather than finding this information in a particular
Node).

Also, rename the (private) 'is_enabled' field to avoid a name conflict.

9 years agoMerge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker
Brian Demsky [Sat, 6 Oct 2012 01:50:24 +0000 (18:50 -0700)]
Merge branch 'master' of ssh://demsky.eecs.uci.edu/home/git/model-checker

9 years agocreate enumeration for enabled information...switch from bools to the enumeration
Brian Demsky [Sat, 6 Oct 2012 00:15:49 +0000 (17:15 -0700)]
create enumeration for enabled information...switch from bools to the enumeration

9 years agocyclegraph: fix indentation
Brian Norris [Sat, 6 Oct 2012 00:07:49 +0000 (17:07 -0700)]
cyclegraph: fix indentation

9 years agocyclegraph: flag cycles for reflexive edges
Brian Norris [Sat, 6 Oct 2012 00:03:01 +0000 (17:03 -0700)]
cyclegraph: flag cycles for reflexive edges

The cyclegraph shouldn't fail (i.e., ASSERT()) when reflexive edges are
added; instead, they should be declared as cycles.