10 years agocommon: drop model_print_summary()
Brian Norris [Tue, 16 Apr 2013 01:19:10 +0000 (18:19 -0700)]
common: drop model_print_summary()

This can cause problems if we include it in the output of ASSERT().

10 years agopromise: add Promise::get_index function
Brian Norris [Tue, 16 Apr 2013 00:53:11 +0000 (17:53 -0700)]
promise: add Promise::get_index function

10 years agoaction: we don't need special cases for lock/join anymore
Brian Norris [Tue, 16 Apr 2013 00:26:24 +0000 (17:26 -0700)]
action: we don't need special cases for lock/join anymore

10 years agomove license to LICENSE file
Brian Norris [Tue, 16 Apr 2013 00:12:20 +0000 (17:12 -0700)]
move license to LICENSE file

10 years agoMerge cleanup code from Brian N.
Brian Norris [Tue, 16 Apr 2013 00:09:53 +0000 (17:09 -0700)]
Merge cleanup code from Brian N.

10 years agotraceanalysis: rename to remove '_'
Brian Norris [Mon, 15 Apr 2013 23:56:51 +0000 (16:56 -0700)]
traceanalysis: rename to remove '_'

10 years agobugmessage: move struct to header file
Brian Norris [Mon, 15 Apr 2013 22:41:31 +0000 (15:41 -0700)]
bugmessage: move struct to header file

10 years agofix weird duplicated code
Brian Demsky [Mon, 15 Apr 2013 08:00:36 +0000 (01:00 -0700)]
fix weird duplicated code

10 years agoparams: move model_params to header file
Brian Norris [Mon, 15 Apr 2013 07:02:58 +0000 (00:02 -0700)]
params: move model_params to header file

10 years agomodel: add too_many_steps()
Brian Norris [Mon, 15 Apr 2013 06:24:44 +0000 (23:24 -0700)]
model: add too_many_steps()

10 years agomodel: fixup whitespace
Brian Norris [Mon, 15 Apr 2013 06:11:53 +0000 (23:11 -0700)]
model: fixup whitespace

10 years agoscanalysis: fix warning
Brian Norris [Mon, 15 Apr 2013 04:34:49 +0000 (21:34 -0700)]
scanalysis: fix warning In member function ‘bool SCAnalysis::processRead(ModelAction*, ClockVector*)’: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]

10 years agoscanalysis: remove whitespace
Brian Norris [Mon, 15 Apr 2013 03:57:48 +0000 (20:57 -0700)]
scanalysis: remove whitespace

10 years agoclean up printing a little for cycle cases...
Brian Demsky [Sun, 14 Apr 2013 07:57:55 +0000 (00:57 -0700)]
clean up printing a little for cycle cases...

10 years agomore implementation of scanalysis...
Brian Demsky [Fri, 12 Apr 2013 08:33:34 +0000 (01:33 -0700)]
more implementation of scanalysis...

implementation of scanalysis and printout code...  should work now

10 years agomore implementation of scanalysis...
Brian Demsky [Fri, 12 Apr 2013 08:33:34 +0000 (01:33 -0700)]
more implementation of scanalysis...
seems like it might work at this point, but need code to tell whether it is a SC trace or not and which parts are SC

10 years agotowards supporting scanalysis...
Brian Demsky [Thu, 11 Apr 2013 10:01:07 +0000 (03:01 -0700)]
towards supporting scanalysis...
added some accessor methods in for external analyses

10 years agoadd some support for traceanalysis plugins
Brian Demsky [Wed, 10 Apr 2013 18:26:19 +0000 (11:26 -0700)]
add some support for traceanalysis plugins

10 years agoadd some support for traceanalysis plugins
Brian Demsky [Wed, 10 Apr 2013 18:26:19 +0000 (11:26 -0700)]
add some support for traceanalysis plugins

10 years agoimprove documentation + Doxygen formatting
Brian Norris [Thu, 11 Apr 2013 19:15:10 +0000 (12:15 -0700)]
improve documentation + Doxygen formatting

10 years agoaction: refactor, move VALUE_TRY{SUCCESS,FAILED} out of header
Brian Norris [Thu, 11 Apr 2013 18:25:16 +0000 (11:25 -0700)]
action: refactor, move VALUE_TRY{SUCCESS,FAILED} out of header

10 years agocyclegraph: kill unused promise_list_t type
Brian Norris [Thu, 11 Apr 2013 17:57:30 +0000 (10:57 -0700)]
cyclegraph: kill unused promise_list_t type

10 years agosnapshot: cleanup/document much of fork-based snapshotting
Brian Norris [Sat, 6 Apr 2013 01:42:16 +0000 (18:42 -0700)]
snapshot: cleanup/document much of fork-based snapshotting

We can consolidate much of the fork-based snapshotting "context"
variables so that they are easier to understand; we essentially only
need two types of contexts, the "shared" context used for the client
program (i.e., the model-checker) and the "private" context, which
each snapshot process uses for running and managing its state. That way,
we only have a single process using the "shared" context at a time,
while the others reside in their private context.

Additionally, I add an "exit" context, which is used just to help with
terminating processes once they have to roll back.

Otherwise, this commit contains renaming and documenting of several
fields, variables, etc.

10 years agosnapshot: use sizeof(*fork_snap)
Brian Norris [Fri, 5 Apr 2013 21:44:02 +0000 (14:44 -0700)]
snapshot: use sizeof(*fork_snap)

10 years agomodel: remove DEBUG action print
Brian Norris [Fri, 5 Apr 2013 21:17:42 +0000 (14:17 -0700)]
model: remove DEBUG action print

A ModelAction should only be printed at certain points, where the action
is guaranteed to be consistent (e.g., its reads_from pointer is valid).
Rather than try to position this print opportunely, just drop it; we
already print out the whole trace, which should be sufficient.

10 years agosnapshot: clean up fork-based error handling
Brian Norris [Fri, 5 Apr 2013 21:02:58 +0000 (14:02 -0700)]
snapshot: clean up fork-based error handling

This is an ugly attempt at error handling. Kill the useless variables,
reword the debug prints, and use perror().

10 years agoaction: correct RF capitalization
Brian Norris [Fri, 5 Apr 2013 21:01:33 +0000 (14:01 -0700)]
action: correct RF capitalization

10 years agomodel: deadlock: print the culprit thread, when known
Brian Norris [Thu, 4 Apr 2013 08:38:40 +0000 (01:38 -0700)]
model: deadlock: print the culprit thread, when known

10 years agodatarace: use variable-argument bug-printing
Brian Norris [Thu, 4 Apr 2013 08:38:28 +0000 (01:38 -0700)]
datarace: use variable-argument bug-printing

10 years agomodel: add variable arguments for bug messages
Brian Norris [Thu, 4 Apr 2013 08:25:34 +0000 (01:25 -0700)]
model: add variable arguments for bug messages

10 years agomodel: proactively build/prune is_enabled() set
Brian Norris [Thu, 4 Apr 2013 08:00:17 +0000 (01:00 -0700)]
model: proactively build/prune is_enabled() set

We should proactively check whether threads are enabled, as this allows
the model-checker to more accurately reason about backtracking, fairness
(particularly, assigning thread priorities), and sleep sets.

This commit causes changes in observed executions for many test
programs. Often, this occurs for programs where the main thread
performs a JOIN on a child thread. Previously, we would only discover
that this thread should be disabled once the scheduler attempts to
execute the JOIN ModelAction. For the period of the trace in which this
disabling isn't discovered, we may try to set backtracking points for
the main thread. These executions just turn into infeasible or
sleep-set-redundant executions anyway.

This can also affect the assertion of thread priority when assigning
backtracking points. If a thread is supposedly "enabled" (but in fact is
not), then we may prevent other threads from running because this thread has
priority. But that thread cannot run, so instead we were doing some
funky things with the remaining ("low-priority") threads.

This fix remedies these sorts of issues by precisely computing the set
of threads which are disabled, waiting on other threads/locks.

10 years agomodel: pull thread control logic out of take_step(), check_current...()
Brian Norris [Wed, 3 Apr 2013 16:44:07 +0000 (09:44 -0700)]
model: pull thread control logic out of take_step(), check_current...()

Much of the scheduling and main control loop should be handled closer to
the top-level run() method. This is a start toward putting these
decisions at the appropriate level, making things more clear. Of course,
it's not complete.

10 years agosnapshot: kill useless macro
Brian Norris [Fri, 5 Apr 2013 17:27:18 +0000 (10:27 -0700)]
snapshot: kill useless macro

We're not reusing this macro, so it's better just to use the standard
perror() followed by exit().

10 years agocontext: move Mac swapcontext() to separate compilation unit
Brian Norris [Thu, 4 Apr 2013 20:19:50 +0000 (13:19 -0700)]
context: move Mac swapcontext() to separate compilation unit

We really don't want model_swapcontext() to ever be inlined on Mac OSX,
since this could potentially cause subtle getcontext()-related bugs to
resurface. Just make it a separate compilation unit (*.cc file).

10 years agocommon: improve redirect_output() error handling
Brian Norris [Thu, 4 Apr 2013 19:55:33 +0000 (12:55 -0700)]
common: improve redirect_output() error handling

Check the return code and errno results of all system/library calls.
Also delete the extraneous 'fd' variable and use the appropriate
STDOUT_FILENO macro instead of fileno(stdout).

10 years agocommon: make model_print() use OS file descriptor, not C library FILE*
Brian Norris [Thu, 4 Apr 2013 19:46:13 +0000 (12:46 -0700)]
common: make model_print() use OS file descriptor, not C library FILE*

A C library FILE does buffering (and possibly other opaque operations)
that can conflict with the model-checker's methods of snapshotting
memory. Particularly, it seems like we could corrupt and drop data that
was written to model_out, if the data was large enough and buffered in
just the right way.

Really, with the presence of dprintf(), there is no reason to print to a
FILE stream; we can just use the file descriptor (either STDOUT_FILENO
or the descriptor received from dup2()).

This fixes bugs seen in verbose mode, with a lot of extra debug
printing. Some of the output was being dropped.

10 years agoaction: include reads-from-promise in HASH calculations
Brian Norris [Thu, 4 Apr 2013 17:10:32 +0000 (10:10 -0700)]
action: include reads-from-promise in HASH calculations

And include the *value*, since the same promise index can yield
different future values.

10 years agotest: insanesync: pointer types
Brian Norris [Thu, 4 Apr 2013 07:16:46 +0000 (00:16 -0700)]
test: insanesync: pointer types

Atomic pointers should be stored in atomic_intptr_t/atomic_uintptr_t.
This can throw some extra warnings on 32-bit architectures.

10 years agomodel: note the DPOR addendum
Brian Norris [Thu, 4 Apr 2013 00:55:49 +0000 (17:55 -0700)]
model: note the DPOR addendum

To prevent having problems with this in the future.

10 years agomodel: use get_thread() helper
Brian Norris [Wed, 3 Apr 2013 16:08:44 +0000 (09:08 -0700)]
model: use get_thread() helper

10 years agoswapcontext() fix for Mac OSX
Brian Norris [Thu, 4 Apr 2013 02:27:06 +0000 (19:27 -0700)]
swapcontext() fix for Mac OSX

We provide our own model_swapcontext() for Mac OSX.

10 years agothreads: remove wait_list
Brian Norris [Wed, 3 Apr 2013 01:11:49 +0000 (18:11 -0700)]
threads: remove wait_list

We can glean the "thread waiting" information without recording it
directly in a list for each thread.

10 years agomodel: use get_mutex() and get_thread_operand() helpers
Brian Norris [Wed, 3 Apr 2013 00:52:12 +0000 (17:52 -0700)]
model: use get_mutex() and get_thread_operand() helpers

10 years agomodel: kill lock_waiters_map
Brian Norris [Wed, 3 Apr 2013 00:48:59 +0000 (17:48 -0700)]
model: kill lock_waiters_map

This information can be gleaned without the need for a hash-table of

10 years agomodel: merge duplicated code for WAIT and UNLOCK
Brian Norris [Wed, 3 Apr 2013 00:45:24 +0000 (17:45 -0700)]
model: merge duplicated code for WAIT and UNLOCK

10 years agotest: mutextest: add thread yield point
Brian Norris [Wed, 3 Apr 2013 00:28:59 +0000 (17:28 -0700)]
test: mutextest: add thread yield point

10 years agomodel: get_mutex() for locating the lock map
Brian Norris [Wed, 3 Apr 2013 00:25:04 +0000 (17:25 -0700)]
model: get_mutex() for locating the lock map

The mutex can already be located via get_mutex(), so don't try to guess
whether it was store in the value or location fields of the ModelAction.

10 years agoaction: add ModelAction::is_thread_join() helper
Brian Norris [Tue, 2 Apr 2013 23:53:52 +0000 (16:53 -0700)]
action: add ModelAction::is_thread_join() helper

10 years agomymemory: fix compiling with !USE_MPROTECT_SNAPSHOT
Brian Norris [Tue, 2 Apr 2013 23:00:30 +0000 (16:00 -0700)]
mymemory: fix compiling with !USE_MPROTECT_SNAPSHOT

10 years agonodestack: move "behaviors" increment all into Node wrapper function
Brian Norris [Thu, 28 Mar 2013 22:27:17 +0000 (15:27 -0700)]
nodestack: move "behaviors" increment all into Node wrapper function

10 years agonodestack: regroup some code
Brian Norris [Thu, 28 Mar 2013 22:21:00 +0000 (15:21 -0700)]
nodestack: regroup some code

To put "threads backtracking" code together

10 years agothreads: move circular wait check into Threads::is_waiting_on
Brian Norris [Wed, 27 Mar 2013 20:03:43 +0000 (13:03 -0700)]
threads: move circular wait check into Threads::is_waiting_on

A Threads::is_waiting_on(Thread *) interface  provides a more generic
interface, which can be useful for tasks other than just circular wait
deadlock detection.

10 years agocorrect comment typo
Brian Demsky [Fri, 22 Mar 2013 23:31:47 +0000 (16:31 -0700)]
correct comment typo

10 years agocheck in insane test case...
Brian Demsky [Fri, 22 Mar 2013 23:27:37 +0000 (16:27 -0700)]
check in insane test case...

We don't support such behavior.

10 years agofix mistake in promises may allow code... need to be even more aggressive about fv
Brian Demsky [Fri, 22 Mar 2013 07:06:51 +0000 (00:06 -0700)]
fix mistake in promises may allow code...  need to be even more aggressive about fv

10 years agomain: adjust defaults again
Brian Norris [Fri, 22 Mar 2013 06:24:15 +0000 (23:24 -0700)]
main: adjust defaults again

-s 6 -S 4

10 years agoMerge branch 'master' of ssh://
Brian Norris [Fri, 22 Mar 2013 01:07:18 +0000 (18:07 -0700)]
Merge branch 'master' of ssh://

10 years agomain: change default 'future delay' for promise expiration
Brian Norris [Fri, 22 Mar 2013 01:05:04 +0000 (18:05 -0700)]
main: change default 'future delay' for promise expiration

From 100 to 10, since 100 is kind of absurd, given the current program
length scalability.

10 years agomodel: re-check pending future values whenever a promise is resolved
Brian Norris [Thu, 21 Mar 2013 23:48:57 +0000 (16:48 -0700)]
model: re-check pending future values whenever a promise is resolved

This is the second part of the previous bugfix; now we must also allow
stashed pending future values to be re-checked in case a promise has
been resolved which now allows sending the value.

10 years agomodel: bugfix - send future values more eagerly
Brian Norris [Thu, 21 Mar 2013 23:33:04 +0000 (16:33 -0700)]
model: bugfix - send future values more eagerly

This is a bugfix to a pretty big problem with our future value pruning,
where we would hold future values as 'pending' until all pending
promises were resolved. Unfortunately, this is unsound and must be

Now, we allow sending some future values even in presence of promises,
if the value is being sent to a load that is later than the last time a
Promise was created. We have a pseudo-proof that this should be correct.

10 years agomodel: refactor add_future_value, add documentation
Brian Norris [Thu, 21 Mar 2013 23:24:47 +0000 (16:24 -0700)]
model: refactor add_future_value, add documentation

10 years agomodel: add 'const'
Brian Norris [Thu, 21 Mar 2013 23:17:16 +0000 (16:17 -0700)]
model: add 'const'

10 years agomodel: rename PendingFutureValue 'act' to 'reader'
Brian Norris [Thu, 21 Mar 2013 23:01:23 +0000 (16:01 -0700)]
model: rename PendingFutureValue 'act' to 'reader'

To make it more clear

10 years agomodel: rework the resolve-promise interface
Brian Norris [Thu, 21 Mar 2013 22:31:34 +0000 (15:31 -0700)]
model: rework the resolve-promise interface

We don't need to pass around the promise index; just pass the Promise
pointer around.

10 years agoadd test case...
Brian Demsky [Thu, 21 Mar 2013 22:18:30 +0000 (15:18 -0700)]
add test case...

10 years agocyclegraph: propagate RMW atomicity edges down the chain
Brian Norris [Wed, 20 Mar 2013 20:44:24 +0000 (13:44 -0700)]
cyclegraph: propagate RMW atomicity edges down the chain

When we add an edge between 'rmwnode' and 'tonode', we are trying to
ensure RMW atomicity. But 'rmwnode' may itself be read by another RMW
(or, in fact, a chain). So we must follow this chain down before
propagating the atomicity edge.

Also, we have the potential to run into the same problem in
addRMWEdge(), except that in that function, we assume that the RMW is
newly-explored and so does not yet have an outgoing RMW edge. This adds
an ASSERT() to check this property.

10 years agomodel: note how we support seq-cst fences
Brian Norris [Tue, 19 Mar 2013 02:23:21 +0000 (19:23 -0700)]
model: note how we support seq-cst fences

10 years agoadd our names
Brian Demsky [Tue, 19 Mar 2013 00:25:19 +0000 (17:25 -0700)]
add our names

10 years agoadd copyright message
Brian Demsky [Tue, 19 Mar 2013 00:24:27 +0000 (17:24 -0700)]
add copyright message

10 years agoMerge branch 'master' of ssh://
Brian Demsky [Mon, 18 Mar 2013 23:46:31 +0000 (16:46 -0700)]
Merge branch 'master' of ssh://

10 years agoupdate git repository with license... GPL v2
Brian Demsky [Mon, 18 Mar 2013 23:46:02 +0000 (16:46 -0700)]
update git repository with license...  GPL v2

10 years agotest: rmwprog: add MODEL_ASSERT
Brian Norris [Fri, 15 Mar 2013 19:03:14 +0000 (12:03 -0700)]
test: rmwprog: add MODEL_ASSERT

Might as well improve this 'litmus' test.

10 years agofix memory leak
Brian Demsky [Thu, 14 Mar 2013 22:39:14 +0000 (15:39 -0700)]
fix memory leak

when we reuse nodes in the nodestack, we will recreate yield information and leak the old array...

10 years agomodel: bugfix - missing SC mo_graph edge
Brian Norris [Tue, 12 Mar 2013 17:47:41 +0000 (10:47 -0700)]
model: bugfix - missing SC mo_graph edge

We must enforce a rule such as the following, derived from C++ Section
29.3, statement 3 (second subpoint):

if is_store(X) && is_seq_cst(X) && is_store(Y) && is_load(Z) &&
   is_seq_cst(Z) &&
   X --sc-> Z && Y --rf-> Z && X != Y
   X --mo-> Y

This has been checked (via manual test-case) to fix a bug which allowed
an inconsistent mo/sc/rf relationship.

10 years agomodel: refactor r_modification_order 'act != curr' and 'act != rf'
Brian Norris [Mon, 11 Mar 2013 23:54:10 +0000 (16:54 -0700)]
model: refactor r_modification_order 'act != curr' and 'act != rf'

We never want to process 'curr' or 'rf' in r_modification_order, so just
factor this out to the beginning of the loop to save on code clutter
(and potential bugs).

10 years agomymemory: enforce that user allocations come from user context
Brian Norris [Sat, 9 Mar 2013 20:54:58 +0000 (12:54 -0800)]
mymemory: enforce that user allocations come from user context

10 years agomymemory, threads: add allocator specifically for Thread
Brian Norris [Sat, 9 Mar 2013 20:51:36 +0000 (12:51 -0800)]
mymemory, threads: add allocator specifically for Thread

clas Thread is a special exception, where user-space allocations should
happend from the model-checker context. So provide a special set of
functions to specifically differentiate these allocations.

10 years agomodel: privatize some thread functions
Brian Norris [Sat, 9 Mar 2013 20:24:06 +0000 (12:24 -0800)]
model: privatize some thread functions

We never need to call ModelChecker::add_thread from outside

We really shouldn't try to call 'remove_thread' from the Thread
destructor. It's unnecessary.

10 years agolitmus: wrc: add macro for memory ordering
Brian Norris [Sat, 9 Mar 2013 01:25:24 +0000 (17:25 -0800)]
litmus: wrc: add macro for memory ordering

For manual inspection of these tests, one might want to change the
memory-ordering for the loads/stores.

Note that this changes the default to use relaxed.

10 years agolitmus: seq-lock: add MODEL_ASSERT() for the important behavior
Brian Norris [Sat, 9 Mar 2013 00:50:51 +0000 (16:50 -0800)]
litmus: seq-lock: add MODEL_ASSERT() for the important behavior

10 years agomodel-assert: include <stdbool.h>
Brian Norris [Fri, 8 Mar 2013 23:59:46 +0000 (15:59 -0800)]
model-assert: include <stdbool.h>

'bool' is not a built-in type in C. Include the (C99) <stdbool.h>

10 years agostl - remove stale <vector> and <list> #include's
Brian Norris [Fri, 8 Mar 2013 20:35:42 +0000 (12:35 -0800)]
stl - remove stale <vector> and <list> #include's

10 years agobugfix - add stl-model.h wrappers, to provide more control over STL
Brian Norris [Thu, 7 Mar 2013 22:56:51 +0000 (14:56 -0800)]
bugfix - add stl-model.h wrappers, to provide more control over STL

We need to provide an operator new/delete for our std::vector and
std::list instantiations. So we extend the base classes and add the
appropriate new/delete methods.

10 years agoRevert "switch to snapshot/modelalloc versions of stl classes"
Brian Norris [Thu, 7 Mar 2013 22:56:22 +0000 (14:56 -0800)]
Revert "switch to snapshot/modelalloc versions of stl classes"

This reverts commit 7524803854c2de38c0311fe5037e3c17105ccfaa.

It was missing a lot of conversions, and I did duplicate work. So I'll
just check in my changes instead.

10 years agoswitch to snapshot/modelalloc versions of stl classes
Brian Demsky [Thu, 7 Mar 2013 22:49:20 +0000 (14:49 -0800)]
switch to snapshot/modelalloc versions of stl classes

10 years agoadd new option for uninitialized writes...
Brian Demsky [Thu, 7 Mar 2013 03:17:58 +0000 (19:17 -0800)]
add new option for uninitialized writes...

10 years agomodel, nodestack: bugfix - retain UNINIT actions across executions
Brian Norris [Thu, 7 Mar 2013 02:40:34 +0000 (18:40 -0800)]
model, nodestack: bugfix - retain UNINIT actions across executions

Previously, we  were allocating UNINIT actions as snapshotting memory,
just for ease of use. But because they may not immediately trigger a bug
(if they are a valid read-from), such actions must have a longer
lifetime - in fact, a lifetime similar to normal ModelActions.

So, we stash them in NodeStack alongside normal actions.

Also, improve a few ASSERT()'s and clarify a push_front() vs.
push_back() (the list is empty, so it doesn't matter; but it follows the
style of the rest of the lists to use push_front() here).

10 years agolinuxrwlocksyield: refactor
Brian Norris [Wed, 6 Mar 2013 07:05:25 +0000 (23:05 -0800)]
linuxrwlocksyield: refactor

10 years agodocumentation update
Brian Demsky [Wed, 6 Mar 2013 05:58:33 +0000 (21:58 -0800)]
documentation update

10 years agoMerge branch 'master' of ssh://
Brian Demsky [Wed, 6 Mar 2013 05:41:09 +0000 (21:41 -0800)]
Merge branch 'master' of ssh://

10 years agoadd destructor so the spsc-queue will compile on MAC
Brian Demsky [Wed, 6 Mar 2013 05:40:39 +0000 (21:40 -0800)]
add destructor so the spsc-queue will compile on MAC

10 years agoMerge remote 'yield' work
Brian Norris [Wed, 6 Mar 2013 03:04:57 +0000 (19:04 -0800)]
Merge remote 'yield' work

10 years agomodel: don't print 'uninitialized' ModelActions in trace output
Brian Norris [Wed, 6 Mar 2013 02:36:58 +0000 (18:36 -0800)]
model: don't print 'uninitialized' ModelActions in trace output

If we proliferate a large number of atomic objects, we can generate a
lot of fake 'uninitialized' ModelActions. Don't print these in traces,
as it just clutters the output.

10 years agoadd yield support
Brian Demsky [Wed, 6 Mar 2013 02:35:27 +0000 (18:35 -0800)]
add yield support

10 years agoimpatomic: fences linker error
Brian Norris [Wed, 6 Mar 2013 02:33:43 +0000 (18:33 -0800)]
impatomic: fences linker error

Because these functions were declared in a header (but not static), they
could get linked into multiple object files, causing linker errors. For
now, just make them 'static inline'. I'm not sure if that exactly fits
the spec, but it's close enough for now.

10 years agoMakefile: use $+ variable
Brian Norris [Tue, 5 Mar 2013 03:51:49 +0000 (19:51 -0800)]
Makefile: use $+ variable

10 years agocyclegraph: memory "leak", fixup
Brian Norris [Tue, 5 Mar 2013 01:50:08 +0000 (17:50 -0800)]
cyclegraph: memory "leak", fixup

An insignificant memory leak.

10 years agolittle optimizations motivated by profiling...
Brian Demsky [Tue, 5 Mar 2013 01:23:48 +0000 (17:23 -0800)]
little optimizations motivated by profiling...

1. reduce allocations of vectors for queues
2. reduce calls to checkReachable

10 years agomodel: refactor the get_thread() selection
Brian Norris [Tue, 5 Mar 2013 00:32:16 +0000 (16:32 -0800)]
model: refactor the get_thread() selection

get_thread() may or may not be called with a non-NULL 'curr' argument,
and if it non-NULL, it still may not be used. Make the logic cleaner by
pulling the 'curr'-specific functionality out to its own function.

10 years agorefactor DBG_ENABLED() vs. verbose
Brian Norris [Mon, 4 Mar 2013 05:08:38 +0000 (21:08 -0800)]
refactor DBG_ENABLED() vs. verbose

Always set 'verbose' when we are compiling a DEBUG build.