bbef51eb43
It is surprisingly difficult to write a simple python script that
can reliably `import lldb` without failing, or crashing. I'm
currently resorting to convolutions like this:
def find_lldb(may_reexec=False):
if prefix := os.environ.get('LLDB_PYTHON_PREFIX'):
if os.path.realpath(prefix) != os.path.realpath(sys.prefix):
raise Exception("cannot import lldb.\n"
f" sys.prefix should be: {prefix}\n"
f" but it is: {sys.prefix}")
else:
line1, line2 = subprocess.run(
['lldb', '-x', '-b', '-o', 'script print(sys.prefix)'],
encoding='utf8', stdout=subprocess.PIPE,
check=True).stdout.strip().splitlines()
assert line1.strip() == '(lldb) script print(sys.prefix)'
prefix = line2.strip()
os.environ['LLDB_PYTHON_PREFIX'] = prefix
if sys.prefix != prefix:
if not may_reexec:
raise Exception(
"cannot import lldb.\n" +
f" This python, at {sys.prefix}\n"
f" does not math LLDB's python at {prefix}")
os.environ['LLDB_PYTHON_PREFIX'] = prefix
python_exe = os.path.join(prefix, 'bin', 'python3')
os.execl(python_exe, python_exe, *sys.argv)
lldb_path = subprocess.run(['lldb', '-P'],
check=True, stdout=subprocess.PIPE,
encoding='utf8').stdout.strip()
sys.path = [lldb_path] + sys.path
This patch aims to replace all that with:
#!/usr/bin/env lldb-python
import lldb
...
... by adding the following features:
* new command line option: --print-script-interpreter-info. This
prints language-specific information about the script interpreter
in JSON format.
* new tool (unix only): lldb-python which finds python and exec's it.
Reviewed By: JDevlieghere
Differential Revision: https://reviews.llvm.org/D112973
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
//===-- ScriptInterpreterPython.h -------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTINTERPRETERPYTHON_H
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#define LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTINTERPRETERPYTHON_H
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#include "lldb/Host/Config.h"
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#if LLDB_ENABLE_PYTHON
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#include "lldb/Breakpoint/BreakpointOptions.h"
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#include "lldb/Core/IOHandler.h"
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#include "lldb/Core/StructuredDataImpl.h"
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#include "lldb/Interpreter/ScriptInterpreter.h"
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#include "lldb/lldb-private.h"
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#include <memory>
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#include <string>
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#include <vector>
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namespace lldb_private {
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/// Abstract interface for the Python script interpreter.
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class ScriptInterpreterPython : public ScriptInterpreter,
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public IOHandlerDelegateMultiline {
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public:
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class CommandDataPython : public BreakpointOptions::CommandData {
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public:
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CommandDataPython() : BreakpointOptions::CommandData() {
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interpreter = lldb::eScriptLanguagePython;
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}
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CommandDataPython(StructuredData::ObjectSP extra_args_sp) :
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BreakpointOptions::CommandData(),
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m_extra_args_up(new StructuredDataImpl()) {
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interpreter = lldb::eScriptLanguagePython;
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m_extra_args_up->SetObjectSP(extra_args_sp);
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}
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lldb::StructuredDataImplUP m_extra_args_up;
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};
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ScriptInterpreterPython(Debugger &debugger)
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: ScriptInterpreter(debugger, lldb::eScriptLanguagePython),
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IOHandlerDelegateMultiline("DONE") {}
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StructuredData::DictionarySP GetInterpreterInfo() override;
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static void Initialize();
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static void Terminate();
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static llvm::StringRef GetPluginNameStatic() { return "script-python"; }
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static llvm::StringRef GetPluginDescriptionStatic();
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static FileSpec GetPythonDir();
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static void SharedLibraryDirectoryHelper(FileSpec &this_file);
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protected:
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static void ComputePythonDirForApple(llvm::SmallVectorImpl<char> &path);
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static void ComputePythonDir(llvm::SmallVectorImpl<char> &path);
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};
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} // namespace lldb_private
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#endif // LLDB_ENABLE_PYTHON
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#endif // LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTINTERPRETERPYTHON_H
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