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[lldb/Plugins] Add ScriptedProcess::GetCapabilities affordance (NFC)

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This patch introduces a new method to the Scripted Process interface,
GetCapabilities.

This returns a dictionary that contains a list of flags that the
ScriptedProcess instance supports. This can be used for instance, to
force symbol lookup, when loading dynamic libraries in the scripted process.

Differential Revision: https://reviews.llvm.org/D142059

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
This commit is contained in:
Med Ismail Bennani 2023-01-30 16:53:39 -08:00
parent e6cac17b56
commit 2d5348be25
4 changed files with 29 additions and 8 deletions
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12
lldb/examples/python/scripted_process/scripted_process.py
View File

@ -14,6 +14,7 @@ class ScriptedProcess(metaclass=ABCMeta):
THE METHODS EXPOSED MIGHT CHANGE IN THE FUTURE.
"""
capabilities = None
memory_regions = None
loaded_images = None
threads = None
@ -45,6 +46,17 @@ class ScriptedProcess(metaclass=ABCMeta):
self.threads = {}
self.loaded_images = []
self.metadata = {}
self.capabilities = {}
def get_capabilities(self):
""" Get a dictionary containing the process capabilities.
Returns:
Dict[str:bool]: The dictionary of capability, with the capability
name as the key and a boolean flag as the value.
The dictionary can be empty.
"""
return self.capabilities
@abstractmethod
def get_memory_region_containing_address(self, addr):

2
lldb/include/lldb/Interpreter/ScriptedProcessInterface.h
View File

@ -28,6 +28,8 @@ public:
return {};
}
virtual StructuredData::DictionarySP GetCapabilities() { return {}; }
virtual Status Launch() { return Status("ScriptedProcess did not launch"); }
virtual Status Resume() { return Status("ScriptedProcess did not resume"); }

21
lldb/source/Plugins/ScriptInterpreter/Python/ScriptedProcessPythonInterface.cpp
View File

@ -56,6 +56,17 @@ StructuredData::GenericSP ScriptedProcessPythonInterface::CreatePluginObject(
return m_object_instance_sp;
}
StructuredData::DictionarySP ScriptedProcessPythonInterface::GetCapabilities() {
Status error;
StructuredData::DictionarySP dict =
Dispatch<StructuredData::DictionarySP>("get_capabilities", error);
if (!CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, dict, error))
return {};
return dict;
}
Status ScriptedProcessPythonInterface::Launch() {
return GetStatusFromMethod("launch");
}
@ -140,14 +151,8 @@ StructuredData::ArraySP ScriptedProcessPythonInterface::GetLoadedImages() {
StructuredData::ArraySP array =
Dispatch<StructuredData::ArraySP>("get_loaded_images", error);
if (!array || !array->IsValid() || error.Fail()) {
return ScriptedInterface::ErrorWithMessage<StructuredData::ArraySP>(
LLVM_PRETTY_FUNCTION,
llvm::Twine("Null or invalid object (" +
llvm::Twine(error.AsCString()) + llvm::Twine(")."))
.str(),
error);
}
if (!CheckStructuredDataObject(LLVM_PRETTY_FUNCTION, array, error))
return {};
return array;
}

2
lldb/source/Plugins/ScriptInterpreter/Python/ScriptedProcessPythonInterface.h
View File

@ -29,6 +29,8 @@ public:
StructuredData::DictionarySP args_sp,
StructuredData::Generic *script_obj = nullptr) override;
StructuredData::DictionarySP GetCapabilities() override;
Status Launch() override;
Status Resume() override;