To implement SaveCore for elf binaries we need to populate some
additional fields in the prpsinfo struct. Those fields are the nice
value of the process whose core is to be taken as well as a boolean flag
indicating whether or not that process is a zombie. This commit adds
those as well as tests to ensure that the values are consistent with
expectations

This patch augments lldb's event listeners with a new shadow mode.

As the name suggests, this mode allows events to be copied to an
additional listener to perform event monitoring, without interferring
with the event life cycle.

One of our use case for this, is to be able to listen to public process
events while making sure the events will still be delivered to the
default process listener (the debugger listener in most cases).

Differential Revision: https://reviews.llvm.org/D148397

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

This patch is a simple refactor that unifies the default and hijack
listener methods and attributes between ProcessAttachInfo and
ProcessLaunchInfo.

These 2 classes are both derived from the ProcessInfo base class so this
patch moves the listeners attributes and getter/setter methods to the
base class.

Differential Revision: https://reviews.llvm.org/D148395

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

This patch moves `ScriptedMetadata.h` from the `Interpreter` directory to
the `Utility` sub-directory since `ProcessInfo.h` depends on it.

It also gets rid of the unused `OptionGroupPythonClassWithDict`
constructor for `ScriptedMetadata` which would address the layering
violation.

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

This patch adds process attach capabilities to the ScriptedProcess
plugin. This doesn't really expects a PID or process name, since the
process state is already script, however, this allows to create a
scripted process without requiring to have an executuble in the target.

In order to do so, this patch also turns the scripted process related
getters and setters from the `ProcessLaunchInfo` and
`ProcessAttachInfo` classes to a `ScriptedMetadata` instance and moves
it in the `ProcessInfo` class, so it can be accessed interchangeably.

This also adds the necessary SWIG wrappers to convert the internal
`Process{Attach,Launch}InfoSP` into a `SB{Attach,Launch}Info` to pass it
as argument the scripted process python implementation and convert it
back to the internal representation.

rdar://104577406

Differential Revision: https://reviews.llvm.org/D143104

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

This patch replaces (llvm::|)Optional< with std::optional<.  I'll post
a separate patch to clean up the "using" declarations, #include
"llvm/ADT/Optional.h", etc.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

This patch adds #include <optional> to those files containing
llvm::Optional<...> or Optional<...>.

I'll post a separate patch to actually replace llvm::Optional with
std::optional.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

This patch removes the remaining reproducer code. The SBReproducer class
remains for ABI stability but is just an empty shell. This completes the
removal process outlined on the mailing list [1].

[1] https://lists.llvm.org/pipermail/lldb-dev/2021-September/017045.html

Applied modernize-use-default-member-init clang-tidy check over LLDB.
It appears in many files we had already switched to in class member init but
never updated the constructors to reflect that. This check is already present in
the lldb/.clang-tidy config.

Differential Revision: https://reviews.llvm.org/D121481