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(#106774)
(based on a conversation I had with @labath yesterday in
https://github.com/llvm/llvm-project/pull/106442)
Most APIs that currently vend a Status would be better served by
returning llvm::Expected<> instead. If possibles APIs should be
refactored to avoid Status. The only legitimate long-term uses of Status
are objects that need to store an error for a long time (which should be
questioned as a design decision, too).
This patch makes the transition to llvm::Error easier by making the
places that cannot switch to llvm::Error explicit: They are marked with
a call to Status::clone(). Every other API can and should be refactored
to use llvm::Expected. In the end Status should only be used in very few
places.
Whenever an unchecked Error is dropped by Status it logs this to the
verbose API channel.
Implementation notes:
This patch introduces two new kinds of error_category as well as new
llvm::Error types. Here is the mapping of lldb::ErrorType to
llvm::Errors:
```
(eErrorTypeInvalid)
eErrorTypeGeneric llvm::StringError
eErrorTypePOSIX llvm::ECError
eErrorTypeMachKernel MachKernelError
eErrorTypeExpression llvm::ErrorList<ExpressionError>
eErrorTypeWin32 Win32Error
```
Relanding with built-in cloning support for llvm::ECError, and support
for initializing a Windows error with a NO_ERROR error code, and
modifying TestGDBRemotePlatformFile.py to support different renderings
of ENOSYS.
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(NFC) (#106774)"
This reverts commit 40d8888f13fb54b0fe840deef23054de6544c184.
One last Windows failure remaining.
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(#106774)
(based on a conversation I had with @labath yesterday in
https://github.com/llvm/llvm-project/pull/106442)
Most APIs that currently vend a Status would be better served by
returning llvm::Expected<> instead. If possibles APIs should be
refactored to avoid Status. The only legitimate long-term uses of Status
are objects that need to store an error for a long time (which should be
questioned as a design decision, too).
This patch makes the transition to llvm::Error easier by making the
places that cannot switch to llvm::Error explicit: They are marked with
a call to Status::clone(). Every other API can and should be refactored
to use llvm::Expected. In the end Status should only be used in very few
places.
Whenever an unchecked Error is dropped by Status it logs this to the
verbose API channel.
Implementation notes:
This patch introduces two new kinds of error_category as well as new
llvm::Error types. Here is the mapping of lldb::ErrorType to
llvm::Errors:
```
(eErrorTypeInvalid)
eErrorTypeGeneric llvm::StringError
eErrorTypePOSIX llvm::ECError
eErrorTypeMachKernel MachKernelError
eErrorTypeExpression llvm::ErrorList<ExpressionError>
eErrorTypeWin32 Win32Error
```
Relanding with built-in cloning support for llvm::ECError, and support
for initializing a Windows error with a NO_ERROR error code.
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(NFC) (#106774)"
This reverts commit b44da2446b17aaa847bf76f81a01870917f8736b.
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(#106774)
(based on a conversation I had with @labath yesterday in
https://github.com/llvm/llvm-project/pull/106442)
Most APIs that currently vend a Status would be better served by
returning llvm::Expected<> instead. If possibles APIs should be
refactored to avoid Status. The only legitimate long-term uses of Status
are objects that need to store an error for a long time (which should be
questioned as a design decision, too).
This patch makes the transition to llvm::Error easier by making the
places that cannot switch to llvm::Error explicit: They are marked with
a call to Status::clone(). Every other API can and should be refactored
to use llvm::Expected. In the end Status should only be used in very few
places.
Whenever an unchecked Error is dropped by Status it logs this to the
verbose API channel.
Implementation notes:
This patch introduces two new kinds of error_category as well as new
llvm::Error types. Here is the mapping of lldb::ErrorType to
llvm::Errors:
```
(eErrorTypeInvalid)
eErrorTypeGeneric llvm::StringError
eErrorTypePOSIX llvm::ECError
eErrorTypeMachKernel MachKernelError
eErrorTypeExpression llvm::ErrorList<ExpressionError>
eErrorTypeWin32 Win32Error
```
Relanding with built-in cloning support for llvm::ECError, and support
for initializing a Windows error with a NO_ERROR error code.
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of it (#109498)
This patch re-lands #105449 and fixes the various test failures.
---------
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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(NFC) (#106774)"
This reverts commit 104b249c236578d298384416c495ff7310b97f4d because
it has caused 2 test failures on Windows:
https://lab.llvm.org/buildbot/#/builders/141/builds/2544
Failed Tests (2):
lldb-api :: functionalities/gdb_remote_client/TestGDBRemotePlatformFile.py
lldb-unit :: Utility/./UtilityTests.exe/StatusTest/ErrorWin32
I reckon the cause is the same, that we construct an error with the Win32
NO_ERROR value which means there was no error but we're assuming anything
with an error code is a failure.
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...and "[lldb/Interpreter] Introduce `ScriptedStopHook{,Python}Interface` & make use of it (#105449)"
This reverts commit 76b827bb4d5b4cc4d3229c4c6de2529e8b156810, and commit 1e131ddfa8f1d7b18c85c6e4079458be8b419421
because the first commit caused the test command-stop-hook-output.test to fail.
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of it (#105449)
This patch introduces new `ScriptedStopHook{,Python}Interface` classes
that make use of the Scripted Interface infrastructure and makes use of
it in `StopHookScripted`.
It also relax the requirement on the number of argument for initializing
scripting extension if the size of the interface parameter pack contains
1 less element than the extension maximum number of positional arguments
for this initializer.
This addresses the cases where the embedded interpreter session
dictionary is passed to the extension initializer which is not used most
of the time.
---------
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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(#109063)
This patch adds new requirements to the Scripted Interface abstract
method checker to check the minimum number of argument for abstract
methods.
This check is done when creating the interface object so the object is
not created if the user implementation doesn't match the abstract method
requirement.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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(#106774)
(based on a conversation I had with @labath yesterday in
https://github.com/llvm/llvm-project/pull/106442)
Most APIs that currently vend a Status would be better served by
returning llvm::Expected<> instead. If possibles APIs should be
refactored to avoid Status. The only legitimate long-term uses of Status
are objects that need to store an error for a long time (which should be
questioned as a design decision, too).
This patch makes the transition to llvm::Error easier by making the
places that cannot switch to llvm::Error explicit: They are marked with
a call to Status::clone(). Every other API can and should be refactored
to use llvm::Expected. In the end Status should only be used in very few
places.
Whenever an unchecked Error is dropped by Status it logs this to the
verbose API channel.
Implementation notes:
This patch introduces two new kinds of error_category as well as new
llvm::Error types. Here is the mapping of lldb::ErrorType to
llvm::Errors:
```
(eErrorTypeInvalid)
eErrorTypeGeneric llvm::StringError
eErrorTypePOSIX llvm::ECError
eErrorTypeMachKernel MachKernelError
eErrorTypeExpression llvm::ErrorList<ExpressionError>
eErrorTypeWin32 Win32Error
```
Relanding with built-in cloning support for llvm::ECError.
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(NFC) (#106774)"
This reverts commit 06939fa2e140a171132275ec0ea1857d20c5dbdd.
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(#106774)
(based on a conversation I had with @labath yesterday in
https://github.com/llvm/llvm-project/pull/106442)
Most APIs that currently vend a Status would be better served by
returning llvm::Expected<> instead. If possibles APIs should be
refactored to avoid Status. The only legitimate long-term uses of Status
are objects that need to store an error for a long time (which should be
questioned as a design decision, too).
This patch makes the transition to llvm::Error easier by making the
places that cannot switch to llvm::Error explicit: They are marked with
a call to Status::clone(). Every other API can and should be refactored
to use llvm::Expected. In the end Status should only be used in very few
places.
Whenever an unchecked Error is dropped by Status it logs this to the
verbose API channel.
Implementation notes:
This patch introduces two new kinds of error_category as well as new
llvm::Error types. Here is the mapping of lldb::ErrorType to
llvm::Errors:
```
(eErrorTypeInvalid)
eErrorTypeGeneric llvm::StringError
eErrorTypePOSIX llvm::ECError
eErrorTypeMachKernel MachKernelError
eErrorTypeExpression llvm::ErrorList<ExpressionError>
eErrorTypeWin32 Win32Error
```
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(#107163)
…ror() [NFC]
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This patch removes all of the Set.* methods from Status.
This cleanup is part of a series of patches that make it harder use the
anti-pattern of keeping a long-lives Status object around and updating
it while dropping any errors it contains on the floor.
This patch is largely NFC, the more interesting next steps this enables
is to:
1. remove Status.Clear()
2. assert that Status::operator=() never overwrites an error
3. remove Status::operator=()
Note that step (2) will bring 90% of the benefits for users, and step
(3) will dramatically clean up the error handling code in various
places. In the end my goal is to convert all APIs that are of the form
` ResultTy DoFoo(Status& error)
`
to
` llvm::Expected<ResultTy> DoFoo()
`
How to read this patch?
The interesting changes are in Status.h and Status.cpp, all other
changes are mostly
` perl -pi -e 's/\.SetErrorString/ = Status::FromErrorString/g' $(git
grep -l SetErrorString lldb/source)
`
plus the occasional manual cleanup.
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backtraces (#104523)""
This reverts commit 547917aebd1e79a8929b53f0ddf3b5185ee4df74.
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(#104523)"
This reverts commit f01f80ce6ca7640bb0e267b84b1ed0e89b57e2d9.
This commit introduces an msan violation. See the discussion on https://github.com/llvm/llvm-project/pull/104523.
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Compilers and language runtimes often use helper functions that are
fundamentally uninteresting when debugging anything but the
compiler/runtime itself. This patch introduces a user-extensible
mechanism that allows for these frames to be hidden from backtraces and
automatically skipped over when navigating the stack with `up` and
`down`.
This does not affect the numbering of frames, so `f <N>` will still
provide access to the hidden frames. The `bt` output will also print a
hint that frames have been hidden.
My primary motivation for this feature is to hide thunks in the Swift
programming language, but I'm including an example recognizer for
`std::function::operator()` that I wished for myself many times while
debugging LLDB.
rdar://126629381
Example output. (Yes, my proof-of-concept recognizer could hide even
more frames if we had a method that returned the function name without
the return type or I used something that isn't based off regex, but it's
really only meant as an example).
before:
```
(lldb) thread backtrace --filtered=false
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
* frame #0: 0x0000000100001f04 a.out`foo(x=1, y=1) at main.cpp:4:10
frame #1: 0x0000000100003a00 a.out`decltype(std::declval<int (*&)(int, int)>()(std::declval<int>(), std::declval<int>())) std::__1::__invoke[abi:se200000]<int (*&)(int, int), int, int>(__f=0x000000016fdff280, __args=0x000000016fdff224, __args=0x000000016fdff220) at invoke.h:149:25
frame #2: 0x000000010000399c a.out`int std::__1::__invoke_void_return_wrapper<int, false>::__call[abi:se200000]<int (*&)(int, int), int, int>(__args=0x000000016fdff280, __args=0x000000016fdff224, __args=0x000000016fdff220) at invoke.h:216:12
frame #3: 0x0000000100003968 a.out`std::__1::__function::__alloc_func<int (*)(int, int), std::__1::allocator<int (*)(int, int)>, int (int, int)>::operator()[abi:se200000](this=0x000000016fdff280, __arg=0x000000016fdff224, __arg=0x000000016fdff220) at function.h:171:12
frame #4: 0x00000001000026bc a.out`std::__1::__function::__func<int (*)(int, int), std::__1::allocator<int (*)(int, int)>, int (int, int)>::operator()(this=0x000000016fdff278, __arg=0x000000016fdff224, __arg=0x000000016fdff220) at function.h:313:10
frame #5: 0x0000000100003c38 a.out`std::__1::__function::__value_func<int (int, int)>::operator()[abi:se200000](this=0x000000016fdff278, __args=0x000000016fdff224, __args=0x000000016fdff220) const at function.h:430:12
frame #6: 0x0000000100002038 a.out`std::__1::function<int (int, int)>::operator()(this= Function = foo(int, int) , __arg=1, __arg=1) const at function.h:989:10
frame #7: 0x0000000100001f64 a.out`main(argc=1, argv=0x000000016fdff4f8) at main.cpp:9:10
frame #8: 0x0000000183cdf154 dyld`start + 2476
(lldb)
```
after
```
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
* frame #0: 0x0000000100001f04 a.out`foo(x=1, y=1) at main.cpp:4:10
frame #1: 0x0000000100003a00 a.out`decltype(std::declval<int (*&)(int, int)>()(std::declval<int>(), std::declval<int>())) std::__1::__invoke[abi:se200000]<int (*&)(int, int), int, int>(__f=0x000000016fdff280, __args=0x000000016fdff224, __args=0x000000016fdff220) at invoke.h:149:25
frame #2: 0x000000010000399c a.out`int std::__1::__invoke_void_return_wrapper<int, false>::__call[abi:se200000]<int (*&)(int, int), int, int>(__args=0x000000016fdff280, __args=0x000000016fdff224, __args=0x000000016fdff220) at invoke.h:216:12
frame #6: 0x0000000100002038 a.out`std::__1::function<int (int, int)>::operator()(this= Function = foo(int, int) , __arg=1, __arg=1) const at function.h:989:10
frame #7: 0x0000000100001f64 a.out`main(argc=1, argv=0x000000016fdff4f8) at main.cpp:9:10
frame #8: 0x0000000183cdf154 dyld`start + 2476
Note: Some frames were hidden by frame recognizers
```
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This patch tries to fix an issue with the windows debug builds where the
PDB file for python scripted interfaces cannot be opened since its path
length exceed the windows `MAX_PATH` limit:
https://github.com/llvm/llvm-project/pull/101672#issuecomment-2289481324
This patch addresses the issue by building all the interfaces as a
single library plugin that initiliazes each component as part of its
`Initialize` method, instead of building each interface as its own
library plugin.
This keeps the build artifact path length smaller while respecting the
naming convention and without making any exception in the build system.
Fixes #104895.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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```
lldb-python.h:16:30: warning: ‘g_fcxx_modules_workaround’ defined but not used [-Wunused-variable]
16 | static llvm::Expected<bool> *g_fcxx_modules_workaround;
|
```
Workaround originally added in 36cb29cbbe1b22dcd298ad65e1fabe899b7d7249.
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issue (#101672)
This reverts commit 9effefbae8d96006a4dd29bb9ab8532fd408559d.
With the include order in ScriptedProcessPythonInterface.cpp fixed
(though I cannot explain exactly why it works) and removes the /H flag
intended for debugging this issue.
I think it is something to do with Process.h pulling in PosixApi.h
somewhere along the line, and including Process.h after lldb-python.h
means that NO_PID_T is defined to prevent a redefinition of pid_t.
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This reverts commit e72cdae47b4e263ea97b2bdd75cf44c1510cf3be, which broke
LLVM's lldb builder for Windows msvc.
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This patch relands 2402b3213c2f to investigate the ambigious typedef
issue happening on the windows bots:
https://lab.llvm.org/buildbot/#/builders/141/builds/1175/
However this patch adds the `/H` compiler flag when building
the ScriptedProcessPythonInterface library to be able to investigate the
include order issue.
This patch will be revert after 1 failing run on the windows bot.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This reverts commit c35c4c72e4977258fc1da940e0470e8d0671bf07.
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This patch relands 2402b3213c2f to investigate the ambigious typedef
issue happening on the windows bots:
https://lab.llvm.org/buildbot/#/builders/141/builds/1175/
However this patch adds the `-H` compiler flag when building
the ScriptedProcessPythonInterface library to be able to investigate the
include order issue.
This patch will be revert after 1 failing run on the windows bot.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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issue"
This reverts commit 6bd5fd35063cd14b0a56bc6f7fb1e7b6e1ac56d5.
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This patch relands 2402b3213c2f to investigate the ambigious typedef
issue happening on the windows bots:
https://lab.llvm.org/buildbot/#/builders/141/builds/1175/
However this patch adds the `-H` & `-MM` compiler flags when building
the ScriptedProcessPythonInterface library to be able to investigate the
include order issue.
This patch will be revert after 1 failing run on the windows bot.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This reverts commit 2402b3213c2f10d5033b31df3a0e59e4ad151fbd since it
breaks the windows bot:
https://lab.llvm.org/buildbot/#/builders/141/builds/1175/
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This patch is a follow-up to bccff3baeff8 which adds the
`ScriptedProcess` extension to the `scripting template list` command as
well as its description.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This patch is a follow-up to bccff3baeff8 which adds the
`OperatingSystem` extension to the `scripting template list` command as
well as its description.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This patch is a follow-up to bccff3baeff8 which adds the
`ScriptedPlatform` extension to the `scripting template list` command as
well as its description.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This patch introduces a new `template` multiword sub-command to the
`scripting` top-level command. As the name suggests, this sub-command
operates on scripting templates, and currently has the ability to
automatically discover the various scripting extensions that lldb
supports.
This was previously reviewed in #97273.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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Reverts https://github.com/llvm/llvm-project/pull/97273 since it broke
the windows bot:
https://lab.llvm.org/buildbot/#/builders/141/builds/1025/steps/4/logs/stdio
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This patch tries to fix the following build failure on windows:
https://lab.llvm.org/buildbot/#/builders/141/builds/1083
This started happening following 2914a4b88837, and it seems to be caused
by some special `#include` ordering for the lldb-python header on Windows.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This patch tries to fix the following build failure on windows:
https://lab.llvm.org/buildbot/#/builders/141/builds/1083
This started happening following 2914a4b88837, and it seems to be caused
by some special `#include` ordering for the lldb-python header on Windows.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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(#100561)
Reverts llvm/llvm-project#94779
Due to bot failures:
https://lab.llvm.org/buildbot/#/builders/18/builds/1371
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(#94779)
The condition checking for missing class name, interpreter dictionary,
and script object incorrectly used logical AND (&&), which could never
be true to enter the 'if' block.
This commit uses separate if conditions for each class name, interpreter
dictionary, and script object.
Cought by cppcheck -
lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/ScriptedPythonInterface.h:89:11:
warning: Identical inner 'if' condition is always true.
[identicalInnerCondition]
lldb/source/Plugins/ScriptInterpreter/Python/Interfaces/ScriptedPythonInterface.h:91:16:
warning: Identical inner 'if' condition is always true.
[identicalInnerCondition]
Fix #89195
---------
Co-authored-by: Shivam Gupta <shivma98.tkg@gmail.com>
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This patch tries to fix the following build failure on windows:
https://lab.llvm.org/buildbot/#/builders/141/builds/1083
This started happening following 2914a4b88837, and it seems to be caused
by some special `#include` ordering for the lldb-python header on Windows.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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This patch introduces a new `template` multiword sub-command to the
`scripting` top-level command. As the name suggests, this sub-command
operates on scripting templates, and currently has the ability to
automatically discover the various scripting extensions that lldb
supports.
This was previously reviewed in #97273.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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discovery" (#100273)
Reverts llvm/llvm-project#97273 since it broke the windows bot:
https://lab.llvm.org/buildbot/#/builders/141/builds/1025/steps/4/logs/stdio
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(#97273)
This patch introduces a new `template` multiword sub-command to the
`scripting` top-level command. As the name suggests, this sub-command
operates on scripting templates, and currently has the ability to
automatically discover the various scripting extensions that lldb
supports.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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(#94823)
Among other things, returning an empty string as the repeat command
disables auto-repeat, which can be useful for state-changing commands.
There's one remaining refinement to this setup, which is that for parsed
script commands, it should be possible to change an option value, or add
a new option value that wasn't originally specified, then ask lldb "make
this back into a command string". That would make doing fancy things
with repeat commands easier.
That capability isn't present in the lldb_private side either, however.
So that's for a next iteration.
I haven't added this to the docs on adding commands yet. I wanted to
make sure this was an acceptable approach before I spend the time to do
that.
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return value (#96985)" (#97092)
This reverts commit a2e3af5d581547d3ea53e5383d6f7f1cab45120a and solves
the build error in
https://lab.llvm.org/buildbot/#/builders/141/builds/369.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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return value (#96985)"
This reverts commit 1130e923e2d7fe046101bf639bc5ebcde194c005.
Very likely causes build problems on Windows and with LLVM_NO_DEAD_STRIP=ON,
see https://github.com/llvm/llvm-project/pull/96985#pullrequestreview-2147599208
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value (#96985)
This patch changes `ScriptedThreadPlan::GetStopDescription` behavior by
discarding its return value since it is optional in the first place (the
user doesn't need to provide a return value in their implementation).
This patch also addresses the test failures in TestStepScripted
following 9a9ec22 and re-enables the tests that were XFAIL'd previously.
The issue here was that the `Stream*` that's passed to
`ThreadPlanPython::GetDescription` wasn't being passed by reference to
the python method so it was never updated to reflect how the python
method interacted with it.
This patch solves this issue by making a temporary `StreamSP` that will
be passed to the python method by reference, after what we will copy its
content to the caller `Stream` pointer argument.
---------
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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(#70392) (#96868)
This patch makes ScriptedThreadPlan conforming to the ScriptedInterface
& ScriptedPythonInterface facilities by introducing 2
ScriptedThreadPlanInterface & ScriptedThreadPlanPythonInterface classes.
This allows us to get rid of every ScriptedThreadPlan-specific SWIG
method and re-use the same affordances as other scripting offordances,
like Scripted{Process,Thread,Platform} & OperatingSystem.
To do so, this adds new transformer methods for `ThreadPlan`, `Stream` &
`Event`, to allow the bijection between C++ objects and their python
counterparts.
This just re-lands #70392 after fixing test failures.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
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For the significant amount of call sites that want to create an
incontrovertible error, such a wrapper function creates a significant
readability improvement and lowers the cost of entry to add error
handling in more places.
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(Reland #70392)" (#93153)
Reverts llvm/llvm-project#93149 since it breaks
https://lab.llvm.org/buildbot/#/builders/68/builds/74799
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#70392) (#93149)
This patch makes ScriptedThreadPlan conforming to the ScriptedInterface
& ScriptedPythonInterface facilities by introducing 2
ScriptedThreadPlanInterface & ScriptedThreadPlanPythonInterface classes.
This allows us to get rid of every ScriptedThreadPlan-specific SWIG
method and re-use the same affordances as other scripting offordances,
like Scripted{Process,Thread,Platform} & OperatingSystem.
To do so, this adds new transformer methods for `ThreadPlan`, `Stream` &
`Event`, to allow the bijection between C++ objects and their python
counterparts.
This just re-lands #70392 after fixing test failures.
Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
|
