Convert the ScriptInterpreter system to a plugin-based one.
Previously embedded interpreters were handled as ad-hoc source files compiled into source/Interpreter. This made it hard to disable a specific interpreter, or to add support for other interpreters and allow the developer to choose which interpreter(s) were enabled for a particular build. This patch converts script interpreters over to a plugin-based system. Script interpreters now live in source/Plugins/ScriptInterpreter, and the canonical LLDB interpreter, ScriptInterpreterPython, is moved there as well. Any new code interfacing with the Python C API must live in this location from here on out. Additionally, generic code should never need to reference or make assumptions about the presence of a specific interpreter going forward. Differential Revision: http://reviews.llvm.org/D11431 Reviewed By: Greg Clayton llvm-svn: 243681
This commit is contained in:
Zachary Turner
@@ -0,0 +1,590 @@
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//===-- ScriptInterpreterPython.h -------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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#ifdef LLDB_DISABLE_PYTHON
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// Python is disabled in this build
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#else
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#include "lldb/lldb-private.h"
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#include "PythonDataObjects.h"
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#include "lldb/Core/IOHandler.h"
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#include "lldb/Interpreter/ScriptInterpreter.h"
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#include "lldb/Host/Terminal.h"
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class IOHandlerPythonInterpreter;
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namespace lldb_private {
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class ScriptInterpreterPython :
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public ScriptInterpreter,
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public IOHandlerDelegateMultiline
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{
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public:
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typedef void (*SWIGInitCallback) (void);
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typedef bool (*SWIGBreakpointCallbackFunction) (const char *python_function_name,
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const char *session_dictionary_name,
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const lldb::StackFrameSP& frame_sp,
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const lldb::BreakpointLocationSP &bp_loc_sp);
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typedef bool (*SWIGWatchpointCallbackFunction) (const char *python_function_name,
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const char *session_dictionary_name,
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const lldb::StackFrameSP& frame_sp,
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const lldb::WatchpointSP &wp_sp);
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typedef bool (*SWIGPythonTypeScriptCallbackFunction) (const char *python_function_name,
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void *session_dictionary,
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const lldb::ValueObjectSP& valobj_sp,
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void** pyfunct_wrapper,
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const lldb::TypeSummaryOptionsSP& options,
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std::string& retval);
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typedef void* (*SWIGPythonCreateSyntheticProvider) (const char *python_class_name,
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const char *session_dictionary_name,
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const lldb::ValueObjectSP& valobj_sp);
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typedef void* (*SWIGPythonCreateCommandObject) (const char *python_class_name,
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const char *session_dictionary_name,
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const lldb::DebuggerSP debugger_sp);
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typedef void* (*SWIGPythonCreateScriptedThreadPlan) (const char *python_class_name,
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const char *session_dictionary_name,
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const lldb::ThreadPlanSP& thread_plan_sp);
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typedef bool (*SWIGPythonCallThreadPlan) (void *implementor, const char *method_name, Event *event_sp, bool &got_error);
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typedef void* (*SWIGPythonCreateOSPlugin) (const char *python_class_name,
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const char *session_dictionary_name,
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const lldb::ProcessSP& process_sp);
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typedef size_t (*SWIGPythonCalculateNumChildren) (void *implementor);
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typedef void* (*SWIGPythonGetChildAtIndex) (void *implementor, uint32_t idx);
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typedef int (*SWIGPythonGetIndexOfChildWithName) (void *implementor, const char* child_name);
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typedef void* (*SWIGPythonCastPyObjectToSBValue) (void* data);
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typedef lldb::ValueObjectSP (*SWIGPythonGetValueObjectSPFromSBValue) (void* data);
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typedef bool (*SWIGPythonUpdateSynthProviderInstance) (void* data);
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typedef bool (*SWIGPythonMightHaveChildrenSynthProviderInstance) (void* data);
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typedef void* (*SWIGPythonGetValueSynthProviderInstance) (void *implementor);
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typedef bool (*SWIGPythonCallCommand) (const char *python_function_name,
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const char *session_dictionary_name,
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lldb::DebuggerSP& debugger,
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const char* args,
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lldb_private::CommandReturnObject& cmd_retobj,
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lldb::ExecutionContextRefSP exe_ctx_ref_sp);
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typedef bool (*SWIGPythonCallCommandObject) (void *implementor,
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lldb::DebuggerSP& debugger,
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const char* args,
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lldb_private::CommandReturnObject& cmd_retobj,
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lldb::ExecutionContextRefSP exe_ctx_ref_sp);
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typedef bool (*SWIGPythonCallModuleInit) (const char *python_module_name,
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const char *session_dictionary_name,
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lldb::DebuggerSP& debugger);
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typedef bool (*SWIGPythonScriptKeyword_Process) (const char* python_function_name,
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const char* session_dictionary_name,
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lldb::ProcessSP& process,
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std::string& output);
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typedef bool (*SWIGPythonScriptKeyword_Thread) (const char* python_function_name,
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const char* session_dictionary_name,
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lldb::ThreadSP& thread,
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std::string& output);
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typedef bool (*SWIGPythonScriptKeyword_Target) (const char* python_function_name,
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const char* session_dictionary_name,
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lldb::TargetSP& target,
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std::string& output);
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typedef bool (*SWIGPythonScriptKeyword_Frame) (const char* python_function_name,
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const char* session_dictionary_name,
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lldb::StackFrameSP& frame,
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std::string& output);
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typedef bool (*SWIGPythonScriptKeyword_Value) (const char* python_function_name,
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const char* session_dictionary_name,
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lldb::ValueObjectSP& value,
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std::string& output);
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typedef void* (*SWIGPython_GetDynamicSetting) (void* module,
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const char* setting,
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const lldb::TargetSP& target_sp);
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friend class ::IOHandlerPythonInterpreter;
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ScriptInterpreterPython (CommandInterpreter &interpreter);
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~ScriptInterpreterPython ();
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bool
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Interrupt() override;
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bool
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ExecuteOneLine (const char *command,
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CommandReturnObject *result,
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const ExecuteScriptOptions &options = ExecuteScriptOptions()) override;
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void
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ExecuteInterpreterLoop () override;
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bool
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ExecuteOneLineWithReturn (const char *in_string,
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ScriptInterpreter::ScriptReturnType return_type,
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void *ret_value,
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const ExecuteScriptOptions &options = ExecuteScriptOptions()) override;
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lldb_private::Error
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ExecuteMultipleLines (const char *in_string,
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const ExecuteScriptOptions &options = ExecuteScriptOptions()) override;
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Error
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ExportFunctionDefinitionToInterpreter (StringList &function_def) override;
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bool
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GenerateTypeScriptFunction (StringList &input, std::string& output, const void* name_token = NULL) override;
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bool
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GenerateTypeSynthClass (StringList &input, std::string& output, const void* name_token = NULL) override;
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bool
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GenerateTypeSynthClass (const char* oneliner, std::string& output, const void* name_token = NULL) override;
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// use this if the function code is just a one-liner script
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bool
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GenerateTypeScriptFunction (const char* oneliner, std::string& output, const void* name_token = NULL) override;
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bool
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GenerateScriptAliasFunction (StringList &input, std::string& output) override;
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StructuredData::ObjectSP CreateSyntheticScriptedProvider(const char *class_name, lldb::ValueObjectSP valobj) override;
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StructuredData::GenericSP CreateScriptCommandObject (const char *class_name) override;
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StructuredData::ObjectSP CreateScriptedThreadPlan(const char *class_name, lldb::ThreadPlanSP thread_plan) override;
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bool ScriptedThreadPlanExplainsStop(StructuredData::ObjectSP implementor_sp, Event *event, bool &script_error) override;
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bool ScriptedThreadPlanShouldStop(StructuredData::ObjectSP implementor_sp, Event *event, bool &script_error) override;
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lldb::StateType ScriptedThreadPlanGetRunState(StructuredData::ObjectSP implementor_sp, bool &script_error) override;
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StructuredData::GenericSP OSPlugin_CreatePluginObject(const char *class_name, lldb::ProcessSP process_sp) override;
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StructuredData::DictionarySP OSPlugin_RegisterInfo(StructuredData::ObjectSP os_plugin_object_sp) override;
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StructuredData::ArraySP OSPlugin_ThreadsInfo(StructuredData::ObjectSP os_plugin_object_sp) override;
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StructuredData::StringSP OSPlugin_RegisterContextData(StructuredData::ObjectSP os_plugin_object_sp, lldb::tid_t thread_id) override;
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StructuredData::DictionarySP OSPlugin_CreateThread(StructuredData::ObjectSP os_plugin_object_sp, lldb::tid_t tid,
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lldb::addr_t context) override;
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StructuredData::ObjectSP LoadPluginModule(const FileSpec &file_spec, lldb_private::Error &error) override;
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StructuredData::DictionarySP GetDynamicSettings(StructuredData::ObjectSP plugin_module_sp, Target *target, const char *setting_name,
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lldb_private::Error &error) override;
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size_t CalculateNumChildren(const StructuredData::ObjectSP &implementor) override;
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lldb::ValueObjectSP GetChildAtIndex(const StructuredData::ObjectSP &implementor, uint32_t idx) override;
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int GetIndexOfChildWithName(const StructuredData::ObjectSP &implementor, const char *child_name) override;
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bool UpdateSynthProviderInstance(const StructuredData::ObjectSP &implementor) override;
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bool MightHaveChildrenSynthProviderInstance(const StructuredData::ObjectSP &implementor) override;
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lldb::ValueObjectSP GetSyntheticValue(const StructuredData::ObjectSP &implementor) override;
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bool
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RunScriptBasedCommand(const char* impl_function,
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const char* args,
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ScriptedCommandSynchronicity synchronicity,
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lldb_private::CommandReturnObject& cmd_retobj,
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Error& error,
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const lldb_private::ExecutionContext& exe_ctx) override;
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bool
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RunScriptBasedCommand (StructuredData::GenericSP impl_obj_sp,
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const char* args,
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ScriptedCommandSynchronicity synchronicity,
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lldb_private::CommandReturnObject& cmd_retobj,
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Error& error,
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const lldb_private::ExecutionContext& exe_ctx) override;
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Error
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GenerateFunction(const char *signature, const StringList &input) override;
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Error
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GenerateBreakpointCommandCallbackData (StringList &input, std::string& output) override;
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bool
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GenerateWatchpointCommandCallbackData (StringList &input, std::string& output) override;
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// static size_t
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// GenerateBreakpointOptionsCommandCallback (void *baton,
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// InputReader &reader,
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// lldb::InputReaderAction notification,
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// const char *bytes,
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// size_t bytes_len);
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//
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// static size_t
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// GenerateWatchpointOptionsCommandCallback (void *baton,
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// InputReader &reader,
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// lldb::InputReaderAction notification,
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// const char *bytes,
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// size_t bytes_len);
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static bool
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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
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WatchpointCallbackFunction (void *baton,
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StoppointCallbackContext *context,
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lldb::user_id_t watch_id);
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bool GetScriptedSummary(const char *function_name, lldb::ValueObjectSP valobj, StructuredData::ObjectSP &callee_wrapper_sp,
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const TypeSummaryOptions &options, std::string &retval) override;
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void
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Clear () override;
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bool
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GetDocumentationForItem (const char* item, std::string& dest) override;
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bool
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GetShortHelpForCommandObject(StructuredData::GenericSP cmd_obj_sp, std::string& dest) override;
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uint32_t
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GetFlagsForCommandObject (StructuredData::GenericSP cmd_obj_sp) override;
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bool
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GetLongHelpForCommandObject(StructuredData::GenericSP cmd_obj_sp, std::string& dest) override;
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bool
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CheckObjectExists (const char* name) override
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{
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if (!name || !name[0])
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return false;
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std::string temp;
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return GetDocumentationForItem (name,temp);
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}
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bool
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RunScriptFormatKeyword (const char* impl_function,
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Process* process,
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std::string& output,
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Error& error) override;
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bool
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RunScriptFormatKeyword (const char* impl_function,
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Thread* thread,
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std::string& output,
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Error& error) override;
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bool
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RunScriptFormatKeyword (const char* impl_function,
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Target* target,
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std::string& output,
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Error& error) override;
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bool
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RunScriptFormatKeyword (const char* impl_function,
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StackFrame* frame,
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std::string& output,
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Error& error) override;
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bool
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RunScriptFormatKeyword (const char* impl_function,
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ValueObject* value,
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std::string& output,
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Error& error) override;
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bool LoadScriptingModule(const char *filename, bool can_reload, bool init_session, lldb_private::Error &error,
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StructuredData::ObjectSP *module_sp = nullptr) override;
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bool
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IsReservedWord (const char* word) override;
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std::unique_ptr<ScriptInterpreterLocker>
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AcquireInterpreterLock () override;
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void
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CollectDataForBreakpointCommandCallback (std::vector<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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/// Set the callback body text into the callback for the breakpoint.
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Error
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SetBreakpointCommandCallback (BreakpointOptions *bp_options,
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const char *callback_body) override;
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void
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SetBreakpointCommandCallbackFunction (BreakpointOptions *bp_options,
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const char *function_name) override;
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/// Set a one-liner as the callback for the watchpoint.
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void
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SetWatchpointCommandCallback (WatchpointOptions *wp_options,
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const char *oneliner) override;
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StringList
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ReadCommandInputFromUser (FILE *in_file);
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void ResetOutputFileHandle(FILE *new_fh) override;
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static void
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InitializePrivate ();
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static void
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InitializeInterpreter (SWIGInitCallback python_swig_init_callback,
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SWIGBreakpointCallbackFunction swig_breakpoint_callback,
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SWIGWatchpointCallbackFunction swig_watchpoint_callback,
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SWIGPythonTypeScriptCallbackFunction swig_typescript_callback,
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SWIGPythonCreateSyntheticProvider swig_synthetic_script,
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SWIGPythonCreateCommandObject swig_create_cmd,
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SWIGPythonCalculateNumChildren swig_calc_children,
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SWIGPythonGetChildAtIndex swig_get_child_index,
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SWIGPythonGetIndexOfChildWithName swig_get_index_child,
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SWIGPythonCastPyObjectToSBValue swig_cast_to_sbvalue ,
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SWIGPythonGetValueObjectSPFromSBValue swig_get_valobj_sp_from_sbvalue,
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SWIGPythonUpdateSynthProviderInstance swig_update_provider,
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SWIGPythonMightHaveChildrenSynthProviderInstance swig_mighthavechildren_provider,
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SWIGPythonGetValueSynthProviderInstance swig_getvalue_provider,
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SWIGPythonCallCommand swig_call_command,
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SWIGPythonCallCommandObject swig_call_command_object,
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SWIGPythonCallModuleInit swig_call_module_init,
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SWIGPythonCreateOSPlugin swig_create_os_plugin,
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SWIGPythonScriptKeyword_Process swig_run_script_keyword_process,
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SWIGPythonScriptKeyword_Thread swig_run_script_keyword_thread,
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SWIGPythonScriptKeyword_Target swig_run_script_keyword_target,
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SWIGPythonScriptKeyword_Frame swig_run_script_keyword_frame,
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SWIGPythonScriptKeyword_Value swig_run_script_keyword_value,
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SWIGPython_GetDynamicSetting swig_plugin_get,
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SWIGPythonCreateScriptedThreadPlan swig_thread_plan_script,
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SWIGPythonCallThreadPlan swig_call_thread_plan);
|
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const char *
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||||
GetDictionaryName ()
|
||||
{
|
||||
return m_dictionary_name.c_str();
|
||||
}
|
||||
|
||||
|
||||
PyThreadState *
|
||||
GetThreadState()
|
||||
{
|
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return m_command_thread_state;
|
||||
}
|
||||
|
||||
void
|
||||
SetThreadState (PyThreadState *s)
|
||||
{
|
||||
if (s)
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m_command_thread_state = s;
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------------
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// IOHandlerDelegate
|
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//----------------------------------------------------------------------
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void
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IOHandlerActivated (IOHandler &io_handler) override;
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void
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IOHandlerInputComplete (IOHandler &io_handler, std::string &data) override;
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||||
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||||
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//------------------------------------------------------------------
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// Static Functions
|
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//------------------------------------------------------------------
|
||||
static void
|
||||
Initialize();
|
||||
|
||||
static void
|
||||
Terminate();
|
||||
|
||||
static lldb::ScriptInterpreterSP
|
||||
CreateInstance(CommandInterpreter &interpreter);
|
||||
|
||||
static lldb_private::ConstString
|
||||
GetPluginNameStatic();
|
||||
|
||||
static const char *
|
||||
GetPluginDescriptionStatic();
|
||||
|
||||
//------------------------------------------------------------------
|
||||
// PluginInterface protocol
|
||||
//------------------------------------------------------------------
|
||||
virtual lldb_private::ConstString
|
||||
GetPluginName();
|
||||
|
||||
virtual uint32_t
|
||||
GetPluginVersion();
|
||||
|
||||
protected:
|
||||
|
||||
bool
|
||||
EnterSession (uint16_t on_entry_flags,
|
||||
FILE *in,
|
||||
FILE *out,
|
||||
FILE *err);
|
||||
|
||||
void
|
||||
LeaveSession ();
|
||||
|
||||
void
|
||||
SaveTerminalState (int fd);
|
||||
|
||||
void
|
||||
RestoreTerminalState ();
|
||||
|
||||
class SynchronicityHandler
|
||||
{
|
||||
private:
|
||||
lldb::DebuggerSP m_debugger_sp;
|
||||
ScriptedCommandSynchronicity m_synch_wanted;
|
||||
bool m_old_asynch;
|
||||
public:
|
||||
SynchronicityHandler(lldb::DebuggerSP,
|
||||
ScriptedCommandSynchronicity);
|
||||
~SynchronicityHandler();
|
||||
};
|
||||
|
||||
public:
|
||||
class Locker : public ScriptInterpreterLocker
|
||||
{
|
||||
public:
|
||||
|
||||
enum OnEntry
|
||||
{
|
||||
AcquireLock = 0x0001,
|
||||
InitSession = 0x0002,
|
||||
InitGlobals = 0x0004,
|
||||
NoSTDIN = 0x0008
|
||||
};
|
||||
|
||||
enum OnLeave
|
||||
{
|
||||
FreeLock = 0x0001,
|
||||
FreeAcquiredLock = 0x0002, // do not free the lock if we already held it when calling constructor
|
||||
TearDownSession = 0x0004
|
||||
};
|
||||
|
||||
Locker (ScriptInterpreterPython *py_interpreter = NULL,
|
||||
uint16_t on_entry = AcquireLock | InitSession,
|
||||
uint16_t on_leave = FreeLock | TearDownSession,
|
||||
FILE *in = NULL,
|
||||
FILE *out = NULL,
|
||||
FILE *err = NULL);
|
||||
|
||||
~Locker ();
|
||||
|
||||
private:
|
||||
|
||||
bool
|
||||
DoAcquireLock ();
|
||||
|
||||
bool
|
||||
DoInitSession (uint16_t on_entry_flags, FILE *in, FILE *out, FILE *err);
|
||||
|
||||
bool
|
||||
DoFreeLock ();
|
||||
|
||||
bool
|
||||
DoTearDownSession ();
|
||||
|
||||
static void
|
||||
ReleasePythonLock ();
|
||||
|
||||
bool m_teardown_session;
|
||||
ScriptInterpreterPython *m_python_interpreter;
|
||||
// FILE* m_tmp_fh;
|
||||
PyGILState_STATE m_GILState;
|
||||
};
|
||||
protected:
|
||||
enum class AddLocation
|
||||
{
|
||||
Beginning,
|
||||
End
|
||||
};
|
||||
|
||||
static void AddToSysPath(AddLocation location, std::string path);
|
||||
|
||||
uint32_t
|
||||
IsExecutingPython () const
|
||||
{
|
||||
return m_lock_count > 0;
|
||||
}
|
||||
|
||||
uint32_t
|
||||
IncrementLockCount()
|
||||
{
|
||||
return ++m_lock_count;
|
||||
}
|
||||
|
||||
uint32_t
|
||||
DecrementLockCount()
|
||||
{
|
||||
if (m_lock_count > 0)
|
||||
--m_lock_count;
|
||||
return m_lock_count;
|
||||
}
|
||||
|
||||
enum ActiveIOHandler {
|
||||
eIOHandlerNone,
|
||||
eIOHandlerBreakpoint,
|
||||
eIOHandlerWatchpoint
|
||||
};
|
||||
PythonObject &
|
||||
GetMainModule ();
|
||||
|
||||
PythonDictionary &
|
||||
GetSessionDictionary ();
|
||||
|
||||
PythonDictionary &
|
||||
GetSysModuleDictionary ();
|
||||
|
||||
bool
|
||||
GetEmbeddedInterpreterModuleObjects ();
|
||||
|
||||
PythonObject m_saved_stdin;
|
||||
PythonObject m_saved_stdout;
|
||||
PythonObject m_saved_stderr;
|
||||
PythonObject m_main_module;
|
||||
PythonObject m_lldb_module;
|
||||
PythonDictionary m_session_dict;
|
||||
PythonDictionary m_sys_module_dict;
|
||||
PythonObject m_run_one_line_function;
|
||||
PythonObject m_run_one_line_str_global;
|
||||
std::string m_dictionary_name;
|
||||
TerminalState m_terminal_state;
|
||||
ActiveIOHandler m_active_io_handler;
|
||||
bool m_session_is_active;
|
||||
bool m_pty_slave_is_open;
|
||||
bool m_valid_session;
|
||||
uint32_t m_lock_count;
|
||||
PyThreadState *m_command_thread_state;
|
||||
};
|
||||
} // namespace lldb_private
|
||||
|
||||
#endif // #ifdef LLDB_DISABLE_PYTHON
|
||||
|
||||
#endif // #ifndef LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_SCRIPTINTERPRETERPYTHON_H
|
||||
Reference in New Issue
Block a user