The lifetime of a ValueObject and all its derivative ValueObjects (children, clones, etc.) is managed by a ClusterManager. These objects are only destroyed when every shared pointer to any of the managed objects in the cluster is destroyed. This means that no object in the cluster can store a shared pointer to another object in the cluster without creating a memory leak of the entire cluster. However, some of the synthetic children front-end implementations do exactly this; this patch fixes that.
Differential Revision: https://reviews.llvm.org/D68641
llvm-svn: 374195
Link against clang-cpp dylib rather than split libs when
CLANG_LINK_CLANG_DYLIB is enabled.
Differential Revision: https://reviews.llvm.org/D68456
llvm-svn: 373734
ClangASTContext doesn't use m_persistent_variables in a way specific to
ClangPersistentVariables. Therefore, it should hold a unique pointer to
PersistentExpressionState instead of a ClangPersistentVariablesUP.
This also prevents you from pulling in a plugin header when including
ClangASTContext.h
Doing this exposed an implicit dependency in ObjCLanguage that was
corrected by including ClangModulesDeclVendor.h
llvm-svn: 371470
There is now std::shared_ptr passed around which is expensive for manycore
CPUs. Most of the times (except for 3 cases) it is now just std::moved with no
CPU locks needed. It also makes it possible to sort the keys (which is now not
needed much after D66398).
Differential revision: https://reviews.llvm.org/D67049
llvm-svn: 370863
Since D66174 I see failures of TestDataFormatterStdList in about 50% of runs on
Fedora 30 x86_64 libstdc++. I have found out that LLDB internally expects these
RegularExpressions to be matched in their alphabetical order:
^std::(__cxx11::)?list<.+>(( )?&)?$
^std::__[[:alnum:]]+::list<.+>(( )?&)?$
But since D66174 they are sometimes matched in reverse order. In fact it was
only some luck it worked before as there is internally
std::map<lldb::RegularExpressionSP, FormatterImpl> (FormattersContainer).
Differential Revision: https://reviews.llvm.org/D66398
llvm-svn: 369655
Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.
Differential revision: https://reviews.llvm.org/D66259
llvm-svn: 368933
Summary:
Ideally CompilerType would have no knowledge of clang or any individual
TypeSystem. Decoupling clang is relatively straightforward.
Differential Revision: https://reviews.llvm.org/D66102
llvm-svn: 368741
Summary: We have been seeing increased reports of performance issue around large project and formatting std::function variables especially in functions signatures in back traces. There are some possible fixes but exploring those fixes may take time and it is better to temporarily disable the formatter due to its impact and re-enable it once we have a fix.
Differential Revision: https://reviews.llvm.org/D65666
llvm-svn: 367701
Summary:
This commit achieves the following:
- Functions used to return a `TypeSystem *` return an
`llvm::Expected<TypeSystem *>` now. This means that the result of a call
is always checked, forcing clients to move more carefully.
- `TypeSystemMap::GetTypeSystemForLanguage` will either return an Error or a
non-null pointer to a TypeSystem.
Reviewers: JDevlieghere, davide, compnerd
Subscribers: jdoerfert, lldb-commits
Differential Revision: https://reviews.llvm.org/D65122
llvm-svn: 367360
Summary:
Following up to my CPPLanguageRuntime change, I'm moving
ObjCLanguageRuntime into a plugin as well.
Reviewers: JDevlieghere, compnerd, jingham, clayborg
Subscribers: mgorny, arphaman, lldb-commits
Differential Revision: https://reviews.llvm.org/D64763
llvm-svn: 366148
Summary: This seems better suited to be in a plugin.
Reviewers: JDevlieghere, clayborg, jingham, compnerd, labath
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D64599
llvm-svn: 365951
Summary:
Following up on the plan I outlined in D63622, we can remove the
dependence on clang in all the places where we only want to find the
types from the DeclVendor. This means that currently DeclVendor depends
on clang, but centralizing the dependency makes it easier to refactor
cleanly.
Differential Revision: https://reviews.llvm.org/D63853
llvm-svn: 364962
This is a followup to rL362981, in which I moved GetObjCLanguageRuntime
from Process to ObjCLanguageRuntime, renaming it to Get along the way.
llvm-svn: 362984
Summary:
In an effort to make Process more language agnostic, I removed
GetCPPLanguageRuntime from Process. I'm following up now with an equivalent
change for ObjC.
Differential Revision: https://reviews.llvm.org/D63052
llvm-svn: 362981
Summary:
Using llvm-style rtti gives us stronger guarantees around casting
LanguageRuntimes.
As discussed in D62755
Differential Revision: https://reviews.llvm.org/D62934
llvm-svn: 362884
Summary:
I want to remove this method because I think that Process should be
language agnostic, or at least, not have knowledge about specific language
runtimes. There is "GetLanguageRuntime()" which should be used instead. If the
caller a CPPLanguageRuntime, they should cast it as needed. Ideally, this
should only happen in plugins that need C++ specific knowledge.
The next step I would like to do is remove "GetObjCLanguageRuntime()" as well.
There are a lot more instances of that function being used, so I wanted to
upload this one first to get the general reception to this idea.
Reviewers: compnerd, davide, JDevlieghere, jingham, clayborg, labath, aprantl
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D62755
llvm-svn: 362544
There is likely also an underlying bug in all code that calls
CPlusPlusNameParser with nullptrs, but this patch can also stand for
itself.
rdar://problem/49072829
llvm-svn: 362177
Summary:
Breakpoint shouldn't need to depend on any specific details from a
programming language. Currently the only language-specific detail it takes
advantage of are the different qualified names an objective-c method name might
have when adding a name lookup. This is reasonably generalizable.
The current method name I introduced is "GetVariantMethodNames", which I'm not
particularly tied to. If you have a better suggestion, please do let me know.
Reviewers: JDevlieghere, jingham, clayborg
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D61746
llvm-svn: 360509
Summary:
According to [C128] "Virtual functions should specify exactly one
of `virtual`, `override`, or `final`", I've added override where a
virtual function is overriden but the explicit `override` keyword
was missing. Whenever both `virtual` and `override` were specified,
I removed `virtual`. As C.128 puts it:
> [...] writing more than one of these three is both redundant and
> a potential source of errors.
I anticipate a discussion about whether or not to add `override` to
destructors but I went for it because of an example in [ISOCPP1000].
Let me repeat the comment for you here:
Consider this code:
```
struct Base {
virtual ~Base(){}
};
struct SubClass : Base {
~SubClass() {
std::cout << "It works!\n";
}
};
int main() {
std::unique_ptr<Base> ptr = std::make_unique<SubClass>();
}
```
If for some odd reason somebody removes the `virtual` keyword from the
`Base` struct, the code will no longer print `It works!`. So adding
`override` to destructors actively protects us from accidentally
breaking our code at runtime.
[C128]: https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#c128-virtual-functions-should-specify-exactly-one-of-virtual-override-or-final
[ISOCPP1000]: https://github.com/isocpp/CppCoreGuidelines/issues/1000#issuecomment-476951555
Reviewers: teemperor, JDevlieghere, davide, shafik
Reviewed By: teemperor
Subscribers: kwk, arphaman, kadircet, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D61440
llvm-svn: 359868
Summary:
When we want to compare a ConstString against a string literal (or any other non-ConstString),
we currently have to explicitly turn the other string into a ConstString. This makes sense as
comparing ConstStrings against each other is only a fast pointer comparison.
However, currently we (rather incorrectly) use in several places in LLDB temporary ConstStrings when
we just want to compare a given ConstString against a hardcoded value, for example like this:
```
if (extension != ConstString(".oat") && extension != ConstString(".odex"))
```
Obviously this kind of defeats the point of ConstStrings. In the comparison above we would
construct two temporary ConstStrings every time we hit the given code. Constructing a
ConstString is relatively expensive: we need to go to the StringPool, take a read and possibly
an exclusive write-lock and then look up our temporary string in the string map of the pool.
So we do a lot of heavy work for essentially just comparing a <6 characters in two strings.
I initially wanted to just fix these issues by turning the temporary ConstString in static variables/
members, but that made the code much less readable. Instead I propose to add a new overload
for the ConstString comparison operator that takes a StringRef. This comparison operator directly
compares the ConstString content against the given StringRef without turning the StringRef into
a ConstString.
This means that the example above can look like this now:
```
if (extension != ".oat" && extension != ".odex")
```
It also no longer has to unlock/lock two locks and call multiple functions in other TUs for constructing
the temporary ConstString instances. Instead this should end up just being a direct string comparison
of the two given strings on most compilers.
This patch also directly updates all uses of temporary and short ConstStrings in LLDB to use this new
comparison operator. It also adds a some unit tests for the new and old comparison operator.
Reviewers: #lldb, JDevlieghere, espindola, amccarth
Reviewed By: JDevlieghere, amccarth
Subscribers: amccarth, clayborg, JDevlieghere, emaste, arichardson, MaskRay, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D60667
llvm-svn: 359281
Summary:
This previous fix 5469bda296 did not have a test since we did not have a reproducer.
This is related to how formatters deal with pointers and references. The added tests both the new behavior and covers the previous bug fix as well.
Differential Revision: https://reviews.llvm.org/D60588
llvm-svn: 359118
A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.
Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.
I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.
Differential revision: https://reviews.llvm.org/D60508
llvm-svn: 358135
There's a single report of a crash coming from this current_sp being NULL. I don't
have a repro case, and I couldn't get it to happen by hand-corrupting a list. We
always get an error instead. So I don't have a test case. But checking for null
is clearly right here.
<rdar://problem/48503320>
llvm-svn: 355957
My apologies for the large patch. With the exception of ConstString.h
itself it was entirely produced by sed.
ConstString has exactly one const char * data member, so passing a
ConstString by reference is not any more efficient than copying it by
value. In both cases a single pointer is passed. But passing it by
value makes it harder to accidentally return the address of a local
object.
(This fixes rdar://problem/48640859 for the Apple folks)
Differential Revision: https://reviews.llvm.org/D59030
llvm-svn: 355553
In r353906 we hooked up clang and lldb's reproducer infrastructure to
capture files used by clang. This patch adds the necessary logic to have
clang reuse the files from lldb's reproducer during replay.
Differential revision: https://reviews.llvm.org/D58309
llvm-svn: 354283
Type punning through a union -> no good.
double to uint64 to double again -> no good either.
The nice side effect, other than silencing the sanitizer bot
is that it fixes the formatting of some dates, e.g. Jan 1st 1970.
<rdar://problem/47617983>
llvm-svn: 353191
libc++ has programmable ABI versioning controllable with the _LIBCPP_ABI_VERSION
macro. Currently there are at least 3 settings used in real systems (1 as the
default, ndk1 for Anroid, Cr for Chromium).
Only the 1 and ndk1 cases were handled. This change relaxes the check to allow
any ABI version.
Differential Revision: https://reviews.llvm.org/D57466
llvm-svn: 352899
to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
The code in LLDB assumes that CompilerType and friends use the size 0
as a sentinel value to signal an error. This works for C++, where no
zero-sized type exists, but in many other programming languages
(including I believe C) types of size zero are possible and even
common. This is a particular pain point in swift-lldb, where extra
code exists to double-check that a type is *really* of size zero and
not an error at various locations.
To remedy this situation, this patch starts by converting
CompilerType::getBitSize() and getByteSize() to return an optional
result. To avoid wasting space, I hand-rolled my own optional data
type assuming that no type is larger than what fits into 63
bits. Follow-up patches would make similar changes to the ValueObject
hierarchy.
rdar://problem/47178964
Differential Revision: https://reviews.llvm.org/D56688
llvm-svn: 351214
This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:
run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD
Differential revision: https://reviews.llvm.org/D55584
llvm-svn: 349215
This fixes two compilation failures:
1) Designated initializers are C++20. We can't use them in LLVM.
2) thread_result_t is not a pointer type on all platforms, so
returning nullptr is an error.
llvm-svn: 346873
error: implicit conversion from 'double' to 'uint64_t' (aka 'unsigned long') changes value from -0 to 0 [-Werror,-Wliteral-conversion]
llvm-svn: 346841
An Obj-C array type _NSCallStackArray is used in NSException backtraces. This patch adds a synthetic frontend for _NSCallStackArray, which now correctly returns frame PCs.
Differential Revision: https://reviews.llvm.org/D44081
llvm-svn: 346708
This patch teaches LLDB about more fields on NSException Obj-C objects, specifically we can now retrieve the "name" and "reason" of an NSException. The goal is to eventually be able to have SB API that can provide details about the currently thrown/caught/processed exception.
Differential Revision: https://reviews.llvm.org/D43884
llvm-svn: 346695
- Refactor reading of NSException fields into ExtractFields method to avoid code duplication.
- Remove "m_child_ptr" field, as it's not used anywhere.
- Clang-format.
Differential Revision: https://reviews.llvm.org/D44073
llvm-svn: 346679
This patch removes the comments grouping header includes. They were
added after running IWYU over the LLDB codebase. However they add little
value, are often outdates and burdensome to maintain.
llvm-svn: 346626
Cameron Desrochers