GetNormalizedPath seems to be slow, so it's worth
shortcutting it if possible. This change does so
when the filenames and not equal and we can tell
GetNormalizedPath would not make them equal.
Also added a test for "." final component since that
was missing.
llvm-svn: 298876
This was causing a test failure in one of LLDB's tests which
specifically dealt with a limitation in LLVM's implementation
of home_directory() that LLDB's own implementation had worked
around.
This limitation has been addressed in r298513 on the LLVM side,
so the failing test (which is now unnecessary as the limitation
no longer exists) was removed in r298519, allowing this patch to
be re-submitted without modification.
llvm-svn: 298526
Summary:
ProcFileReader is the cause of the dependency from Host to ProcessLinux
module. Since it's interface is also obsolete (ReadIntoDataBuffer is
trivially replaceable by llvm::MemoryBuffer functions and
ProcessLineByLine is trivially implementable with StringRefs), instead
of moving it around I'm planning to obliterate it. This is the first
step, where I remove a couple of occurences in linux/Host.cpp, and
modernize some code around that.
I have introduced linux/Support.h, which holds two utility functions
now, whose resposibility is to construct the appropriate proc file names
-- the only useful feature of ProcFileReader.
I add a couple of tests for these functions, and for
Host::GetProcessInfo. It's worth noting that these are the first
host-specific unit tests in lldb.
Reviewers: zturner, eugene
Subscribers: srhines, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D30942
llvm-svn: 297843
Summary:
previously we switched to llvm streams for log output, this completes
the switch for the error streams.
I also clean up the includes and remove the unused argument from
DisableAllLogChannels().
This required adding a bit of boiler plate to convert the output in the
command interpreter, but that should go away when we switch command
results to use llvm streams as well.
Reviewers: zturner, eugene
Subscribers: lldb-commits, emaste
Differential Revision: https://reviews.llvm.org/D30894
llvm-svn: 297812
One of the file name templates was occasionally generating the name
"fooa***", which conflicted with the one of the tests expectation that
there is only one item beginning with "fooa".
There doesn't seem to be a good reason for using random file templates
here, so just switch to a fixed set of files to increase
reproducibility.
llvm-svn: 297743
This reverts commit a6a29374662716710f80c8ece96629751697841e.
It has a few compilation failures that I don't have time to fix
at the moment.
llvm-svn: 297589
There were a couple of problems with this function on Windows. Different
separators and differences in how tilde expressions are resolved for
starters, but in addition there was no clear indication of what the
function's inputs or outputs were supposed to be, and there were no tests
to demonstrate its use.
To more easily paper over the differences between Windows paths,
non-Windows paths, and tilde expressions, I've ported this function to use
LLVM-based directory iteration (in fact, I would like to eliminate all of
LLDB's directory iteration code entirely since LLVM's is cleaner / more
efficient (i.e. it invokes fewer stat calls)). and llvm's portable path
manipulation library.
Since file and directory completion assumes you are referring to files and
directories on your local machine, it's safe to assume the path syntax
properties of the host in doing so, so LLVM's APIs are perfect for this.
I've also added a fairly robust set of unit tests. Since you can't really
predict what users will be on your machine, or what their home directories
will be, I added an interface called TildeExpressionResolver, and in the
unit test I've mocked up a fake implementation that acts like a unix
password database. This allows us to configure some fake users and home
directories in the test, so we can exercise all of those hard-to-test
codepaths that normally otherwise depend on the host.
Differential Revision: https://reviews.llvm.org/D30789
llvm-svn: 297585
Summary:
This fixes two threading issues in the logging code. The access to the
mask and options flags had data races when we were trying to
enable/disable logging while another thread was writing to the log.
Since we can log from almost any context, and we want it to be fast, so
I avoided locking primitives and used atomic variables instead. I have
also removed the (unused) setters for the mask and flags to make sure
that the only way to set them is through the enable/disable channel
functions.
I also add tests, which when run under tsan, verify that the use cases
like "doing an LLDB_LOGV while another thread disables logging" are
data-race-free.
Reviewers: zturner, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30702
llvm-svn: 297368
If QPassSignals packaet is supported by lldb-server, lldb-client will
utilize it and ask the server to ignore signals that don't require stops
or notifications.
Such signals will be immediately re-injected into inferior to continue
normal execution.
Differential Revision: https://reviews.llvm.org/D30520
llvm-svn: 297231
This functionality is subsumed by DataBufferLLVM, which is
also more efficient since it will try to mmap. However, we
don't yet support mmaping writable private sections, and in
some cases we were using ReadFileContents and then modifying
the buffer. To address that I've added a flag to the
DataBufferLLVM methods that allow you to map privately, which
disables the mmaping path entirely. Eventually we should teach
DataBufferLLVM to use mmap with writable private, but that is
orthogonal to this effort.
Differential Revision: https://reviews.llvm.org/D30622
llvm-svn: 297095
it was accessing the details of the Log class directly. Let it go
through the channel class instead.
This also discovered a bug when we were setting but not clearing the log
options when enabling a channel.
llvm-svn: 297053
All references to Host and Core have been removed, so this
class can now safely be lowered into Utility.
Differential Revision: https://reviews.llvm.org/D30559
llvm-svn: 296909
Prior to MSVC 2015 we had to manually include this header any
time we were going to include <thread> or <future> due to a
bug in MSVC's STL implementation. This has been fixed in MSVC
for some time now, and we require VS 2015 minimum, so we can
remove this across all subprojects.
llvm-svn: 296906
Summary:
Use StringRef and ArrayRef where possible. This adds an accessor to the
Args class to get a view of the arguments as ArrayRef<const char *>.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30402
llvm-svn: 296592
load_size should be 64-bit unconditionally to match the underlying API.
This makes sure the MAX value correctly signals to auto-detect the file
size when mmap()ing.
llvm-svn: 296334
The channel refactor introduced a regression where we were not honoring
the log options passed when enabling the channel. Fix that and add a
test.
llvm-svn: 296329
After a series of patches on the LLVM side to get the mmaping
code up to compatibility with LLDB's needs, it is now ready
to go, which means LLDB's custom mmapping code is redundant.
So this patch deletes it all and uses LLVM's code instead.
In the future, we could take this one step further and delete
even the lldb DataBuffer base class and rely entirely on
LLVM's facilities, but this is a job for another day.
Differential Revision: https://reviews.llvm.org/D30054
llvm-svn: 296159
Summary:
The code was attempting to copy the shared pointer member in order to
guarantee atomicity, but this is not enough. Instead, protect the
pointer with a proper read-write mutex.
This bug was present here for a long time, but my recent refactors must
have altered the timings slightly, such that now this fails fairly often
when running the tests: the test runner runs the "log disable" command
just as the thread monitoring the lldb-server child is about to report
that the server has exited.
I add a test case for this. It's not possible to reproduce the race
deterministically in normal circumstances, but I have verified that
before the fix, the test failed when run under tsan, and was running
fine afterwards.
Reviewers: clayborg, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30168
llvm-svn: 295712
Summary:
I originally set out to move the NameMatches closer to the relevant
function and add some unit tests. However, in the process I've found a
couple of bugs in the implementation:
- the early exits where not always correct:
- (test==pattern) does not mean the match will always suceed because
of regular expressions
- pattern.empty() does not mean the match will fail because the "" is
a valid prefix of any string
So I cleaned up those and added some tests. The only tricky part here
was that regcomp() implementation on darwin did not recognise the empty
string as a regular expression and returned an REG_EMPTY error instead.
The simples fix here seemed to be to replace the empty expression with
an equivalent non-empty one.
Reviewers: clayborg, zturner
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D30094
llvm-svn: 295651
The way of injecting an error into the printf call was not working on
darwin - the C library still happily format the character. It only
returns an error after we use a wide character that does not fit into a
single byte, so switch the test to use that.
llvm-svn: 295443
Changes wrt. previous version:
- add #include <atomic>: fix build on windows
- add extra {} around the string literals used to initialize
llvm::StringLiteral: fix gcc build
llvm-svn: 295442
Summary:
We currently have two log channel registration mechanisms. One uses a
set of function pointers and the other one is based on the
PluginManager.
The PluginManager dependency is unfortunate, as logging
is also used in lldb-server, and the PluginManager pulls in a lot of
classes which are not used in lldb-server.
Both approach have the problem that they leave too much to do for the
user, and so the individual log channels end up reimplementing command
line argument parsing, category listing, etc.
Here, I replace the PluginManager-based approach with a one. The new API
is more declarative, so the user only needs to specify the list of list
of channels, their descriptions, etc., and all the common tasks like
enabling/disabling categories are hadled by common code. I migrate the
LogChannelDWARF (only user of the PluginManager method) to the new API.
In the follow-up commits I'll replace the other channels with something
similar.
Reviewers: clayborg, zturner, beanz
Subscribers: aprantl, lldb-commits
Differential Revision: https://reviews.llvm.org/D29895
llvm-svn: 295190
With this patch, the only dependency left is from Utility
to Host. After this is broken, Utility will finally be
standalone.
Differential Revision: https://reviews.llvm.org/D29909
llvm-svn: 295088
and use it in the appropriate log statements.
Formatting of chrono types in log messages was very clunky. This should
make it much nicer to use and give better output. For details of the
formatting options see the chrono formatter in llvm.
llvm-svn: 294738
Summary:
This converts LLDB's logging to use llvm streams instead of
lldb_private::Stream and friends. The changes are mostly
straight-forward and amount to s/lldb_private::Stream/llvm::raw_ostream.
The part worth calling out is the rewrite of the StreamCallback class.
Previously this class contained a per-thread buffer of data written. I
assume this had something to do with it trying to make sure each log
line is delivered as a single event, instead of multiple (possibly
interleaved) events. However, this is no longer relevant as the Log
class already writes things to a temporary buffer and then delivers the
message as a single "write", so I have just removed the code in
question.
Reviewers: zturner, clayborg
Subscribers: emaste, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D29615
llvm-svn: 294736
Summary:
This patch removes the over-specified dependencies from LLDBDependencies and instead relies on the dependencies as expressed in each library and tool.
This also removes the library looping in favor of allowing CMake to do its thing. I've tested this patch on Darwin, and found no issues, but since linker semantics vary by system I'll also work on testing it on other platforms too.
Help testing would be greatly appreciated.
Reviewers: labath, zturner
Subscribers: danalbert, srhines, mgorny, jgosnell, lldb-commits
Differential Revision: https://reviews.llvm.org/D29352
llvm-svn: 294515
Summary:
Per discussion in D28616, having two ways two request logging (log
enable lldb XXX verbose && log enable -v lldb XXX) is confusing. This
removes the first option and standardizes all code to use the second
one.
I've added a LLDB_LOGV macro as a shorthand for if(log &&
log->GetVerbose()) and switched most of the affected log statements to
use that (I've only left a couple of cases that were doing complex
computations in an if(log) block).
Reviewers: jingham, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D29510
llvm-svn: 294113
This moves the following classes from Core -> Utility.
ConstString
Error
RegularExpression
Stream
StreamString
The goal here is to get lldbUtility into a state where it has
no dependendencies except on itself and LLVM, so it can be the
starting point at which to start untangling LLDB's dependencies.
These are all low level and very widely used classes, and
previously lldbUtility had dependencies up to lldbCore in order
to use these classes. So moving then down to lldbUtility makes
sense from both the short term and long term perspective in
solving this problem.
Differential Revision: https://reviews.llvm.org/D29427
llvm-svn: 293941
We started passing the list of libraries to link to the
add_lldb_unittest macro, but that macro wasn't actually doing anything
with them. Fix that.
llvm-svn: 293913
Jim Ingham