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
116 lines
4.1 KiB
C++
116 lines
4.1 KiB
C++
//===-- ScriptInterpreterLua.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 liblldb_ScriptInterpreterLua_h_
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#define liblldb_ScriptInterpreterLua_h_
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#include <vector>
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#include "lldb/Breakpoint/WatchpointOptions.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/Utility/Status.h"
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#include "lldb/lldb-enumerations.h"
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namespace lldb_private {
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class Lua;
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class ScriptInterpreterLua : public ScriptInterpreter {
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public:
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class CommandDataLua : public BreakpointOptions::CommandData {
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public:
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CommandDataLua() : BreakpointOptions::CommandData() {
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interpreter = lldb::eScriptLanguageLua;
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}
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CommandDataLua(StructuredData::ObjectSP extra_args_sp)
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: BreakpointOptions::CommandData(), m_extra_args_sp(extra_args_sp) {
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interpreter = lldb::eScriptLanguageLua;
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}
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StructuredData::ObjectSP m_extra_args_sp;
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};
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ScriptInterpreterLua(Debugger &debugger);
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~ScriptInterpreterLua() override;
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bool ExecuteOneLine(
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llvm::StringRef command, CommandReturnObject *result,
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const ExecuteScriptOptions &options = ExecuteScriptOptions()) override;
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void ExecuteInterpreterLoop() override;
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bool LoadScriptingModule(const char *filename,
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const LoadScriptOptions &options,
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lldb_private::Status &error,
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StructuredData::ObjectSP *module_sp = nullptr,
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FileSpec extra_search_dir = {}) override;
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StructuredData::DictionarySP GetInterpreterInfo() override;
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// Static Functions
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static void Initialize();
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static void Terminate();
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static lldb::ScriptInterpreterSP CreateInstance(Debugger &debugger);
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static llvm::StringRef GetPluginNameStatic() { return "script-lua"; }
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static llvm::StringRef GetPluginDescriptionStatic();
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static bool BreakpointCallbackFunction(void *baton,
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StoppointCallbackContext *context,
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lldb::user_id_t break_id,
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lldb::user_id_t break_loc_id);
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static bool WatchpointCallbackFunction(void *baton,
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StoppointCallbackContext *context,
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lldb::user_id_t watch_id);
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// PluginInterface protocol
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llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
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Lua &GetLua();
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llvm::Error EnterSession(lldb::user_id_t debugger_id);
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llvm::Error LeaveSession();
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void CollectDataForBreakpointCommandCallback(
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std::vector<std::reference_wrapper<BreakpointOptions>> &bp_options_vec,
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CommandReturnObject &result) override;
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void
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CollectDataForWatchpointCommandCallback(WatchpointOptions *wp_options,
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CommandReturnObject &result) override;
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Status SetBreakpointCommandCallback(BreakpointOptions &bp_options,
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const char *command_body_text) override;
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void SetWatchpointCommandCallback(WatchpointOptions *wp_options,
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const char *command_body_text) override;
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Status SetBreakpointCommandCallbackFunction(
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BreakpointOptions &bp_options, const char *function_name,
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StructuredData::ObjectSP extra_args_sp) override;
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private:
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std::unique_ptr<Lua> m_lua;
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bool m_session_is_active = false;
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Status RegisterBreakpointCallback(BreakpointOptions &bp_options,
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const char *command_body_text,
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StructuredData::ObjectSP extra_args_sp);
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Status RegisterWatchpointCallback(WatchpointOptions *wp_options,
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const char *command_body_text,
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StructuredData::ObjectSP extra_args_sp);
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};
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} // namespace lldb_private
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#endif // liblldb_ScriptInterpreterLua_h_
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