This patch changes the way the reproducer is initialized. Rather than
making changes at run time we now do everything at initialization time.
To make this happen we had to introduce initializer options and their SB
variant. This allows us to tell the initializer that we're running in
reproducer capture/replay mode.
Because of this change we also had to alter our testing strategy. We
cannot reinitialize LLDB when using the dotest infrastructure. Instead
we use lit and invoke two instances of the driver.
Another consequence is that we can no longer enable capture or replay
through commands. This was bound to go away form the beginning, but I
had something in mind where you could enable/disable specific providers.
However this seems like it adds very little value right now so the
corresponding commands were removed.
Finally this change also means you now have to control this through the
driver, for which I replaced --reproducer with --capture and --replay to
differentiate between the two modes.
Differential revision: https://reviews.llvm.org/D55038
llvm-svn: 348152
This patch extends the FileSystem class with a bunch of functions that
are currently implemented as methods of the FileSpec class. These
methods will be removed in future commits and replaced by calls to the
file system.
The new functions are operated in terms of the virtual file system which
was recently moved from clang into LLVM so it could be reused in lldb.
Because the VFS is stateful, we turned the FileSystem class into a
singleton.
Differential revision: https://reviews.llvm.org/D53532
llvm-svn: 345783
We used to have a pretty stack trace printer in SystemInitializerCommon.
This was disabled on Apple because we didn't want the library to be
setting signal handlers, as this was causing issues when loaded into
Xcode. However, I think it's useful to have this for the LLDB driver, so
I moved it up to use the PrettyStackTraceProgram in the driver's main.
Differential revision: https://reviews.llvm.org/D49377
llvm-svn: 337261
Summary:
For lldb-server, it is sufficient to parse only the native object file
format for its target OS (no other file can be loaded into a running
process). This moves the object file initialization code into specific
initializer classes: lldb-test and liblldb get all object files;
lldb-server gets only one of them. For this to work, I've needed to
create a special SystemInitializer for use in lldb-server, instead of it
calling directly into the common one.
This reduces the size of lldb-server by about 2%, which is not
earth-shattering, but it's an easy win, and it helps.
Reviewers: zturner, clayborg
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D47250
llvm-svn: 333182
Summary:
Before this patch we were unable to write cross-platform MachO tests
because the parsing code did not compile on other platforms. The reason
for that was that ObjectFileMachO depended on
RegisterContextDarwin_arm(64)? (presumably for core file parsing) and
the two Register Context classes uses constants from the system headers
(KERN_SUCCESS, KERN_INVALID_ARGUMENT).
As far as I can tell, these two files don't actually interact with the
darwin kernel -- they are used only in ObjectFileMachO and MacOSX-Kernel
process plugin (even though it has "kernel" in the name, this one
communicates with it via network packets and not syscalls). For the time
being I have created OS-independent definitions of these constants and
made the register context classes use those. Long term, the error
handling in these classes should be probably changed to use more
standard mechanisms such as Status or Error classes.
This is the only change necessary (apart from build system glue) to make
ObjectFileMachO work on other platforms. To demonstrate that, I remove
REQUIRES:darwin from our (only) cross-platform mach-o test.
Reviewers: jasonmolenda, aprantl, clayborg, javed.absar
Subscribers: mgorny, lldb-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D46934
llvm-svn: 332702
LLDB.framework gets loaded into Xcode and other
frameworks, and this is inserting a signal handler into
the process even when lldb isn't used. I have a bunch
of reports of this SignalHandler blowing out the stack,
which renders crash reports for the crash useless.
And in any case libraries really shouldn't be installing
signal handlers.
I only turned this off for APPLE platforms, I'll let
the maintainers of other platforms decide what policy
they want to have w.r.t. this.
llvm-svn: 319598
Summary:
We had a bug where if we had forked (in the ProcessLauncherPosixFork)
while another thread was writing a log message, we would deadlock. This
happened because the fork child inherited the locked log rwmutex, which
would never get unlocked. This meant the child got stuck trying to
disable all log channels.
The bug existed for a while but only started being apparent after
D37930, which started using ThreadLauncher (which uses logging) instead
of std::thread (which does not) for launching TaskPool threads.
The fix is to use pthread_atfork to disable logging in the forked child.
Reviewers: zturner, eugene, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D38938
llvm-svn: 316368
The pthread_atfork trick breaks on android, because
pthread_rwlock_unlock detects that it is not the same thread which
locked the lock. This means that the subsequent lock attempt will still
deadlock (only this time it happens deterministically instead of at
random). Reverting to find a better solution.
This reverts commit r316173.
llvm-svn: 316231
Summary:
We had a bug where if we had forked (in the ProcessLauncherPosixFork)
while another thread was writing a log message, we would deadlock. This
happened because the fork child inherited the locked log rwmutex, which
would never get unlocked. This meant the child got stuck trying to
disable all log channels.
The bug existed for a while but only started being apparent after
D37930, which started using ThreadLauncher (which uses logging) instead
of std::thread (which does not) for launching TaskPool threads.
The fix is to use pthread_atfork to make sure noone is writing a log
message while we are forking.
Reviewers: zturner, eugene, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D38938
llvm-svn: 316173
Summary:
The classes have no dependencies, and they are used both by lldb and
lldb-server, so it makes sense for them to live in the lowest layers.
Reviewers: zturner, jingham
Subscribers: emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D34746
llvm-svn: 306682
The Timer destructor would grab a global mutex in order to update
execution time. Add a class to define a category once, statically; the
class adds itself to an atomic singly linked list, and thus subsequent
updates only need to use an atomic rather than grab a lock and perform a
hashtable lookup.
Differential Revision: https://reviews.llvm.org/D32823
Patch by Scott Smith <scott.smith@purestorage.com>.
llvm-svn: 303058
Summary:
NetBSD can share the same logging functionality with Linux and FreeBSD.
Sponsored by <The NetBSD Foundation>
Reviewers: labath, emaste, joerg, kettenis
Reviewed By: labath, emaste
Subscribers: #lldb
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D31191
llvm-svn: 298406
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
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
Summary:
This also removes magic rename code, which caused the channel to be
called "linux" when built on a linux machine, and "freebsd" when built
on a freebsd one, which seems unnecessary - registering a new channel is
sufficiently simple now that if we wish to log something extremely
os-specific, we can just create a new channel. None of the current
categories seem very specific to one OS or another.
Reviewers: emaste, krytarowski
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30250
llvm-svn: 295954
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:
This patch adds accurate dependency specifications to the mail LLDB libraries and tools.
In all cases except lldb-server, these dependencies are added in addition to existing dependencies (making this low risk), and I performed some code cleanup along the way.
For lldb-server I've cleaned up the LLVM dependencies down to just the minimum actually required. This is more than lldb-server actually directly references, and I've left a todo in the code to clean that up.
Reviewers: labath, zturner
Subscribers: lldb-commits, danalbert, srhines, ki.stfu, mgorny, jgosnell
Differential Revision: https://reviews.llvm.org/D29333
llvm-svn: 293686
LLDB needs some minor changes to adopt PrettyStackTrace after https://reviews.llvm.org/D27683.
We remove our own SetCrashDescription() function and use LLVM-provided RAII objects instead.
We also make sure LLDB doesn't define __crashtracer_info__ which would collide with LLVM's definition.
Differential Revision: https://reviews.llvm.org/D27735
llvm-svn: 289711
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
It's always hard to remember when to include this file, and
when you do include it it's hard to remember what preprocessor
check it needs to be behind, and then you further have to remember
whether it's windows.h or win32.h which you need to include.
This patch changes the name to PosixApi.h, which is more appropriately
named, and makes it independent of any preprocessor setting.
There's still the issue of people not knowing when to include this,
because there's not a well-defined set of things it exposes other
than "whatever is missing on Windows", but at least this should
make it less painful to fix when problems arise.
This patch depends on LLVM revision r278170.
llvm-svn: 278177
Summary:
This removes the last usage of Platform plugins in lldb-server -- it was used for launching child
processes, where it can be trivially replaced by Host::LaunchProces (as lldb-server is always
running on the host).
Removing platform plugins enables us to remove a lot of other unused code, which was pulled in as
a transitive dependency, and it reduces lldb-server size by 4%--9% (depending on build type and
architecture).
Reviewers: clayborg
Subscribers: tberghammer, danalbert, srhines, lldb-commits
Differential Revision: http://reviews.llvm.org/D20440
llvm-svn: 274125
This is a pretty straightforward first pass over removing a number of uses of
Mutex in favor of std::mutex or std::recursive_mutex. The problem is that there
are interfaces which take Mutex::Locker & to lock internal locks. This patch
cleans up most of the easy cases. The only non-trivial change is in
CommandObjectTarget.cpp where a Mutex::Locker was split into two.
llvm-svn: 269877
Summary:
The AST contexts are not needed in the server components, and the clang context in particular
pulls in large parts of clang into the binary. Simply removing these two calls reduces the
lldb-server size by about 50%--80%, depending on the architecture and build type.
This should not impact the client parts as the same calls are already present in
SystemInitializerFull.
Reviewers: tberghammer, clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D20236
llvm-svn: 269416
Summary: These are not needed by lldb-server. Removing them shrinks the server by about 0.5%.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D18206
llvm-svn: 264735
Summary: These are not needed in lldb-server. Removing them shrinks the server size by about 1.5%.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D18188
llvm-svn: 263625
PDB is Microsoft's debug information format, and although we
cannot yet generate it, we still must be able to consume it.
Reason for this is that debug information for system libraries
(e.g. kernel32, C Runtime Library, etc) only have debug info
in PDB format, so in order to be able to support debugging
of system code, we must support it.
Currently this code should compile on every platform, but on
non-Windows platforms the PDB plugin will return 0 capabilities,
meaning that for now PDB is only supported on Windows. This
may change in the future, but the API is designed in such a way
that this will require few (if any) changes on the LLDB side.
In the future we can just flip a switch and everything will
work.
This patch only adds support for line tables. It does not return
information about functions, types, global variables, or anything
else. This functionality will be added in a followup patch.
Differential Revision: http://reviews.llvm.org/D17363
Reviewed by: Greg Clayton
llvm-svn: 262528
Summary:
I've run into an issue when running unit tests, where the underlying problem turned out to be
that we were creating Timer objects (through several layers of indirection) without calling
Timer::Initialize. Since Timer's thread-local storage was not properly initialized, we were
overwriting gtest's own thread-local storage, causing test failures.
Instead of requiring that every test calls Timer::Initialize(), I remove the function altogether:
The thread-local storage can be initialized on-demand, and the g_file variable initialized to
stdout and never changed, so I have simply removed it.
Reviewers: clayborg, zturner, tberghammer
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D16722
llvm-svn: 259356
Summary: Other platform parts needed to build this code are already merged.
Reviewers: emaste, clayborg
Subscribers: joerg, lldb-commits
Differential Revision: http://reviews.llvm.org/D15066
llvm-svn: 254865
Summary:
This reverts commit 2354cd73101e58540b8b39783df462d06023309f as it
introduced a bunch regressions on the linux bot.
Reviewers: emaste, krytarowski
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D14844
llvm-svn: 253615
Summary:
These changes are still incomplete, but we are almost there.
Changes:
- CMake and gmake code
- SWIG code
- minor code additions
Reviewers: emaste, joerg
Subscribers: youri, akat1, brucem, lldb-commits, joerg
Differential Revision: http://reviews.llvm.org/D14042
llvm-svn: 252403
Summary:
This is a resubmission of r252179, but correctly ignores the source
files for other platforms.
Reviewers: granata.enrico, tberghammer, zturner, jingham
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D14389
llvm-svn: 252205
This cleans up type systems to be more pluggable. Prior to this we had issues:
- Module, SymbolFile, and many others has "ClangASTContext &GetClangASTContext()" functions. All have been switched over to use "TypeSystem *GetTypeSystemForLanguage()"
- Cleaned up any places that were using the GetClangASTContext() functions to use TypeSystem
- Cleaned up Module so that it no longer has dedicated type system member variables:
lldb::ClangASTContextUP m_ast; ///< The Clang AST context for this module.
lldb::GoASTContextUP m_go_ast; ///< The Go AST context for this module.
Now we have a type system map:
typedef std::map<lldb::LanguageType, lldb::TypeSystemSP> TypeSystemMap;
TypeSystemMap m_type_system_map; ///< A map of any type systems associated with this module
- Many places in code were using ClangASTContext static functions to place with CompilerType objects and add modifiers (const, volatile, restrict) and to make typedefs, L and R value references and more. These have been made into CompilerType functions that are abstract:
class CompilerType
{
...
//----------------------------------------------------------------------
// Return a new CompilerType that is a L value reference to this type if
// this type is valid and the type system supports L value references,
// else return an invalid type.
//----------------------------------------------------------------------
CompilerType
GetLValueReferenceType () const;
//----------------------------------------------------------------------
// Return a new CompilerType that is a R value reference to this type if
// this type is valid and the type system supports R value references,
// else return an invalid type.
//----------------------------------------------------------------------
CompilerType
GetRValueReferenceType () const;
//----------------------------------------------------------------------
// Return a new CompilerType adds a const modifier to this type if
// this type is valid and the type system supports const modifiers,
// else return an invalid type.
//----------------------------------------------------------------------
CompilerType
AddConstModifier () const;
//----------------------------------------------------------------------
// Return a new CompilerType adds a volatile modifier to this type if
// this type is valid and the type system supports volatile modifiers,
// else return an invalid type.
//----------------------------------------------------------------------
CompilerType
AddVolatileModifier () const;
//----------------------------------------------------------------------
// Return a new CompilerType adds a restrict modifier to this type if
// this type is valid and the type system supports restrict modifiers,
// else return an invalid type.
//----------------------------------------------------------------------
CompilerType
AddRestrictModifier () const;
//----------------------------------------------------------------------
// Create a typedef to this type using "name" as the name of the typedef
// this type is valid and the type system supports typedefs, else return
// an invalid type.
//----------------------------------------------------------------------
CompilerType
CreateTypedef (const char *name, const CompilerDeclContext &decl_ctx) const;
};
Other changes include:
- Removed "CompilerType TypeSystem::GetIntTypeFromBitSize(...)" and CompilerType TypeSystem::GetFloatTypeFromBitSize(...) and replaced it with "CompilerType TypeSystem::GetBuiltinTypeForEncodingAndBitSize(lldb::Encoding encoding, size_t bit_size);"
- Fixed code in Type.h to not request the full type for a type for no good reason, just request the forward type and let the type expand as needed
llvm-svn: 247953
The Go runtime schedules user level threads (goroutines) across real threads.
This adds an OS plugin to create memory threads for goroutines.
It supports the 1.4 and 1.5 go runtime.
Differential Revision: http://reviews.llvm.org/D5871
llvm-svn: 247852
The call to ProcessWindowsLog::Initialize() is protected by #if defined(_MSC_VER).
But the call to ProcessWindowsLog::Terminate() was using __WIN32__. This commit
makes it use _MSC_VER too.
Committing as it seems obvious change.
llvm-svn: 246859
Previously embedded interpreters were handled as ad-hoc source
files compiled into source/Interpreter. This made it hard to
disable a specific interpreter, or to add support for other
interpreters and allow the developer to choose which interpreter(s)
were enabled for a particular build.
This patch converts script interpreters over to a plugin-based system.
Script interpreters now live in source/Plugins/ScriptInterpreter, and
the canonical LLDB interpreter, ScriptInterpreterPython, is moved there
as well.
Any new code interfacing with the Python C API must live in this location
from here on out. Additionally, generic code should never need to
reference or make assumptions about the presence of a specific interpreter
going forward.
Differential Revision: http://reviews.llvm.org/D11431
Reviewed By: Greg Clayton
llvm-svn: 243681
Summary: This aligns the library names used by the Makefile build to be the same as those create by the CMake build to make switching between the two easier. The only major difficulty was lldbHost which was one library in the CMake system and several in the Makefile system. Most of the other changes are trivial renames.
Reviewers: labath
Subscribers: emaste, tberghammer, lldb-commits
Differential Revision: http://reviews.llvm.org/D11154
llvm-svn: 242196
Summary:
This commit moves the Windows DyanamicLoader to the common DynamicLoader
directory. This is required to remote debug Windows targets.
This commit also initializes the Windows DYLD plugin in
SystemInitializerCommon (similarly to both POSIX and MacOSX DYLD
plugins) so that we can automatically instantiate this class when
connected to a windows process.
Test Plan: Build.
Reviewers: zturner
Subscribers: lldb-commits, abdulras
Differential Revision: http://reviews.llvm.org/D10882
llvm-svn: 241697
Summary:
Currently, the local-only path fails about 50% of the tests, which means that: a) nobody is using
it; and b) the remote debugging path is much more stable. This commit removes the local-only
linux debugging code (ProcessLinux) and makes remote-loopback the only way to debug local
applications (the same architecture as OSX). The ProcessPOSIX code is moved to the FreeBSD
directory, which is now the only user of this class. Hopefully, FreeBSD will soon move to the new
architecture as well and then this code can be removed completely.
Test Plan: Test suite passes via remote stub.
Reviewers: emaste, vharron, ovyalov, clayborg
Subscribers: tberghammer, emaste, lldb-commits
Differential Revision: http://reviews.llvm.org/D10661
llvm-svn: 240543
Summary:
Implementation of assembly profiler for MIPS32 using EmulateInstruction which currently scans only prologue/epilogue assembly instructions. It uses llvm::MCDisassembler to decode assembly instructions.
Reviewers: clayborg, jasonmolenda
Differential Revision: http://reviews.llvm.org/D9769
llvm-svn: 237420
Linux arm don't support hardware stepping (neither mismatch
breakpoints). This patch implement signle stepping with doing a software
emulation of the next instruction and then setting a temporary
breakpoint at the address where the thread will stop next.
Differential revision: http://reviews.llvm.org/D8976
llvm-svn: 234987
Jonas Devlieghere