6d41f38c74
Thread Safety Analysis: move warnings on range-based for loops out of beta
...
and into -Wthread-safety.
llvm-svn: 221410
2014-11-05 23:09:28 +00:00
c60dc2cfb9
Thread Safety Analysis: add new warning flag, -Wthread-safety-reference, which
...
warns when a guarded variable is passed by reference as a function argument.
This is released as a separate warning flag, because it could potentially
break existing code that uses thread safety analysis.
llvm-svn: 218087
2014-09-18 23:02:26 +00:00
ca98874943
Allow a scoped lockable object to acquire/release multiple locks.
...
Scoped lockable objects (mutex guards) are implemented as if it is a
lock itself that is acquired upon construction and unlocked upon
destruction. As it if course needs to be used to actually lock down
something else (a mutex), it keeps track of this knowledge through its
underlying mutex field in its FactEntry.
The problem with this approach is that this only allows us to lock down
a single mutex, so extend the code to use a vector of underlying
mutexes. This, however, makes the code a bit more complex than
necessary, so subclass FactEntry into LockableFactEntry and
ScopedLockableFactEntry and move all the logic that differs between
regular locks and scoped lockables into member functions.
llvm-svn: 217016
2014-09-03 06:00:11 +00:00
b00885898e
Adding const-qualifiers to auto declarations. NFC.
...
llvm-svn: 215704
2014-08-15 12:29:39 +00:00
eb0ea5f40a
Thread safety analysis: add -Wthread-safety-verbose flag, which adds additional notes that are helpful when compiling statistics on thread safety warnings.
...
llvm-svn: 215677
2014-08-14 21:40:15 +00:00
4133b13bd2
Thread Safety Analysis: fix to improve handling of references to guarded
...
data members and range based for loops.
llvm-svn: 215671
2014-08-14 19:17:06 +00:00
13a4f76d51
ThreadSafety.cpp: Prune bogus \param(s). [-Wdocumentation]
...
llvm-svn: 214796
2014-08-04 22:48:46 +00:00
e9882cf315
ThreadSafetyAnalysis: Fix annotations in class members. [-Wdocumentation]
...
llvm-svn: 214795
2014-08-04 22:48:36 +00:00
3efd0495a0
Thread Safety Analysis: add a -Wthread-safety-negative flag that warns whenever
...
a mutex is acquired, but corresponding mutex is not provably not-held. This
is based on the earlier negative requirements patch.
llvm-svn: 214789
2014-08-04 22:13:06 +00:00
4266522ab9
Thread safety analysis: Add support for negative requirements, which are
...
capability expressions of the form !expr, and denote a capability that must
not be held.
llvm-svn: 214725
2014-08-04 16:10:59 +00:00
ea1f83385f
Thread Safety Analysis: Replace the old and broken SExpr with the new
...
til::SExpr. This is a large patch, with many small changes to pretty printing
and expression lowering to make the new SExpr representation equivalent in
functionality to the old.
llvm-svn: 214089
2014-07-28 15:57:27 +00:00
2554294321
[C++11] Use 'nullptr'. Analysis edition.
...
llvm-svn: 209191
2014-05-20 04:30:07 +00:00
9ee54d119c
Converting some for loops to use range-based for loops. No functional changes intended.
...
llvm-svn: 208810
2014-05-14 20:42:13 +00:00
59a72b93a2
Amending r208783 based on a suggestion by David Blaikie.
...
llvm-svn: 208800
2014-05-14 18:32:59 +00:00
42f9a8a7f9
Replacing some manual iterations with standard algorithms. No functional changes intended.
...
llvm-svn: 208783
2014-05-14 15:01:43 +00:00
2f3fc6badd
Formatting and style changes; no functional changes intended.
...
llvm-svn: 208774
2014-05-14 13:03:55 +00:00
0c6a14ca82
Amending r208439 to remove buildLExpr; this code isn't strictly required yet, and fixes a dead code warning.
...
llvm-svn: 208440
2014-05-09 18:44:48 +00:00
7c192b452f
Add the ability to use logical expressions for capability attributes. This is to allow requirements to be expressed not just in terms of lists, but in terms of logical expressions. Eg)
...
void foo(void) __attribute__((requires_capability((FlightControl || Worker) && !Logger)));
This is WIP code.
llvm-svn: 208439
2014-05-09 18:26:23 +00:00
b0f9e4ace7
Remove unused typedef found by gcc's -Wunused-local-typedefs.
...
llvm-svn: 207870
2014-05-02 21:22:21 +00:00
a82eaa70f1
Updated the attribute tablegen emitter for variadic arguments to emit a range accessor in addition to the iterators. Updated code using iterators to use range-based for loops.
...
llvm-svn: 207837
2014-05-02 13:35:42 +00:00
0491afaf5f
Updating to use more range-based for loops, nullptr and auto. No functional changes.
...
llvm-svn: 206590
2014-04-18 13:13:15 +00:00
e80bfcd048
Making some public members into private members. This also introduces a bit more const-correctness, and now uses some range-based for loops. No functional changes intended.
...
llvm-svn: 206503
2014-04-17 21:44:08 +00:00
7e615c2f65
Thread Safety Analysis: reorganized SExpr header files. No change in
...
functionality.
llvm-svn: 205936
2014-04-09 22:39:43 +00:00
b2213910de
Thread Safety Analysis: update to internal SExpr handling.
...
This patch is the first part of a significant refactoring that seeks to restore
sanity to way thread safety analysis deals with capability expressions. The
current patch merely provides an outline of the structure of the new system.
It's not yet connected to the actual analysis, so there's no change in
functionality.
llvm-svn: 205728
2014-04-07 18:09:54 +00:00
e044904301
Updating the capability attribute diagnostics to be more capability-neutral. Instead of using terminology such as "lock", "unlock" and "locked", the new terminology is "acquire", "release" and "held". Additionally, the capability attribute's name argument is now reported as part of the diagnostic, instead of hard coding as "mutex."
...
llvm-svn: 205359
2014-04-01 21:43:23 +00:00
df115d9bf3
The release_capability, release_shared_capability and release_generic_capability functions are now functionally distinct for capability analysis. The unlock_function attribute maps directly to release_generic_capability.
...
llvm-svn: 204469
2014-03-21 14:48:48 +00:00
18d85aed39
Replacing the exclusive_lock_function, shared_lock_function and unlock_function attributes with the acquire_capability and release_capability attributes. The old spellings will continue to work, but the underlying semantic attributes have been replaced.
...
Downgraded the capability diagnostics from error to warning to match the desired behavior, and updated the existing test cases.
llvm-svn: 204350
2014-03-20 16:02:49 +00:00
d1c9b37db9
Thread safety analysis: move smart pointer checks from -Wthread-safety-beta
...
to -Wthread-safety.
llvm-svn: 203510
2014-03-10 23:03:49 +00:00
be22bcb180
[C++11] Replacing DeclBase iterators specific_attr_begin() and specific_attr_end() with iterator_range specific_attrs(). Updating all of the usages of the iterators with range-based for loops.
...
llvm-svn: 203474
2014-03-10 17:08:28 +00:00
69bb592ad1
Based on usage, the NamedDecl is always set when constructing a CallingContext, but none of the other optional parameters are. Removing the optional parameters, and making the NamedDecl required.
...
No functional changes intended.
llvm-svn: 203149
2014-03-06 19:37:24 +00:00
19842c437a
Refactored to use a simple helper function that wraps the logic of creating an SExprNode and returning the position in which it was inserted.
...
No functional change intended.
llvm-svn: 203148
2014-03-06 19:25:11 +00:00
cea2609b59
Very minor simplification and typo correction; no functional changes intended.
...
llvm-svn: 203144
2014-03-06 19:10:16 +00:00
efe348ec44
DeLesley Hutchins (who wrote the original thread-safety attribute functionality) and I have agreed to start migrating from lock-specific terminology to "capability"-specific terminology. This opens the door for future threading-related analysis passes so that a common nomenclature can be used.
...
The following attributes have been (silently) deprecated, with their replacements listed:
lockable => capability
exclusive_locks_required => requires_capability
shared_locks_required => requires_shared_capability
locks_excluded => requires_capability
There are no functional changes intended.
llvm-svn: 201585
2014-02-18 17:36:50 +00:00
ee58e6d6d2
Switching getAttrs calls over to using a specific_attr_iterator. No functional changes intended.
...
llvm-svn: 197681
2013-12-19 15:35:31 +00:00
9ead1243a5
Replacing calls to getAttr with calls to hasAttr for clarity. No functional change intended -- this only replaces Boolean uses of getAttr.
...
llvm-svn: 197648
2013-12-19 02:39:40 +00:00
f6a24ce40f
Fix a tranche of comment, test and doc typos
...
llvm-svn: 196510
2013-12-05 16:25:25 +00:00
d473363876
Correct hyphenations in comments and assert messages
...
This patch tries to avoid unrelated changes other than fixing a few
hyphen-related ambiguities in nearby lines.
llvm-svn: 196466
2013-12-05 04:47:09 +00:00
39b804f8a4
Thread safety analysis: fix ICE due to missing null check on dyn_cast.
...
llvm-svn: 195777
2013-11-26 19:45:21 +00:00
e73d6b605c
Thread-safety analysis: check guarded_by and pt_guarded_by on array access.
...
Currently supported only with -Wthread-safety-beta.
llvm-svn: 194275
2013-11-08 19:42:01 +00:00
05b7b37021
Thread safety analysis: minor bugfix to smart pointer handling, and expanded
...
test case.
llvm-svn: 194157
2013-11-06 18:40:01 +00:00
5ede5cc9ba
Thread safety analysis: check pt_guarded_by attribute when calling -> and *
...
on smart pointers. -Wthread-safety-beta only.
llvm-svn: 194103
2013-11-05 23:09:56 +00:00
7b56f6c3c2
Simplify some implementations of get*Decl.
...
* NamedDecl and CXXMethodDecl were missing getMostRecentDecl.
* The const version can just forward to the non const.
* getMostRecentDecl can use cast instead of cast_or_null.
This then removes some casts from the callers.
llvm-svn: 193039
2013-10-19 16:55:03 +00:00
9f5193cf61
Thread Safety Analysis: fix bug when using TryLock with && and || expressions.
...
llvm-svn: 188505
2013-08-15 23:06:33 +00:00
16b4ff5c4d
Thread safety analysis: move warnings within lock/unlock functions out of beta.
...
llvm-svn: 188465
2013-08-15 15:31:25 +00:00
fcd5b7e76e
Updating a link in the comments; no functional change.
...
llvm-svn: 185013
2013-06-26 19:17:19 +00:00
3b2c66bbda
Thread safety analysis: fix use after free bug reported by Evgeniy Stepanov.
...
llvm-svn: 182305
2013-05-20 17:57:55 +00:00
b682431775
Thread safety analysis: add two new attributes to the thread safety analysis:
...
assert_exclusive_lock and assert_shared_lock. These attributes are used to
mark functions that dynamically check (i.e. assert) that a lock is held.
llvm-svn: 182170
2013-05-17 23:02:59 +00:00
fd374bb3dd
Thread safety analysis: turn on checking within lock and unlock functions.
...
These checks are enabled with the -Wthread-safety-beta flag.
llvm-svn: 179046
2013-04-08 20:11:11 +00:00
c105ba19e9
Thread safety analysis: Turn on checking for non-scalar types by default.
...
These were previously enabled as a "beta" feature, but they have now been
extensively tested.
llvm-svn: 178478
2013-04-01 17:47:37 +00:00
00be69ab5c
Remove the CFGElement "Invalid" state.
...
Use Optional<CFG*> where invalid states were needed previously. In the one case
where that's not possible (beginAutomaticObjDtorsInsert) just use a dummy
CFGAutomaticObjDtor.
Thanks for the help from Jordan Rose & discussion/feedback from Ted Kremenek
and Doug Gregor.
Post commit code review feedback on r175796 by Ted Kremenek.
llvm-svn: 175938
2013-02-23 00:29:34 +00:00
DeLesley Hutchins