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//===-- ThreadPlanPython.cpp ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/ThreadPlan.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/ScriptInterpreter.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadPlan.h"
#include "lldb/Target/ThreadPlanPython.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/State.h"
using namespace lldb;
using namespace lldb_private;
// ThreadPlanPython
ThreadPlanPython::ThreadPlanPython(Thread &thread, const char *class_name,
const StructuredDataImpl &args_data)
: ThreadPlan(ThreadPlan::eKindPython, "Python based Thread Plan", thread,
eVoteNoOpinion, eVoteNoOpinion),
m_class_name(class_name), m_args_data(args_data), m_did_push(false),
m_stop_others(false) {
SetIsControllingPlan(true);
SetOkayToDiscard(true);
SetPrivate(false);
}
bool ThreadPlanPython::ValidatePlan(Stream *error) {
if (!m_did_push)
return true;
if (!m_implementation_sp) {
if (error)
error->Printf("Error constructing Python ThreadPlan: %s",
m_error_str.empty() ? "<unknown error>"
: m_error_str.c_str());
return false;
}
return true;
}
ScriptInterpreter *ThreadPlanPython::GetScriptInterpreter() {
return m_process.GetTarget().GetDebugger().GetScriptInterpreter();
}
void ThreadPlanPython::DidPush() {
// We set up the script side in DidPush, so that it can push other plans in
// the constructor, and doesn't have to care about the details of DidPush.
m_did_push = true;
if (!m_class_name.empty()) {
ScriptInterpreter *script_interp = GetScriptInterpreter();
if (script_interp) {
m_implementation_sp = script_interp->CreateScriptedThreadPlan(
m_class_name.c_str(), m_args_data, m_error_str,
this->shared_from_this());
}
}
}
bool ThreadPlanPython::ShouldStop(Event *event_ptr) {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
bool should_stop = true;
if (m_implementation_sp) {
ScriptInterpreter *script_interp = GetScriptInterpreter();
if (script_interp) {
bool script_error;
should_stop = script_interp->ScriptedThreadPlanShouldStop(
m_implementation_sp, event_ptr, script_error);
if (script_error)
SetPlanComplete(false);
}
}
return should_stop;
}
bool ThreadPlanPython::IsPlanStale() {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
bool is_stale = true;
if (m_implementation_sp) {
ScriptInterpreter *script_interp = GetScriptInterpreter();
if (script_interp) {
bool script_error;
is_stale = script_interp->ScriptedThreadPlanIsStale(m_implementation_sp,
script_error);
if (script_error)
SetPlanComplete(false);
}
}
return is_stale;
}
bool ThreadPlanPython::DoPlanExplainsStop(Event *event_ptr) {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
bool explains_stop = true;
if (m_implementation_sp) {
ScriptInterpreter *script_interp = GetScriptInterpreter();
if (script_interp) {
bool script_error;
explains_stop = script_interp->ScriptedThreadPlanExplainsStop(
m_implementation_sp, event_ptr, script_error);
if (script_error)
SetPlanComplete(false);
}
}
return explains_stop;
}
bool ThreadPlanPython::MischiefManaged() {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
bool mischief_managed = true;
if (m_implementation_sp) {
// I don't really need mischief_managed, since it's simpler to just call
// SetPlanComplete in should_stop.
mischief_managed = IsPlanComplete();
if (mischief_managed) {
// We need to cache the stop reason here we'll need it in GetDescription.
GetDescription(&m_stop_description, eDescriptionLevelBrief);
m_implementation_sp.reset();
}
}
return mischief_managed;
}
lldb::StateType ThreadPlanPython::GetPlanRunState() {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
lldb::StateType run_state = eStateRunning;
if (m_implementation_sp) {
ScriptInterpreter *script_interp = GetScriptInterpreter();
if (script_interp) {
bool script_error;
run_state = script_interp->ScriptedThreadPlanGetRunState(
m_implementation_sp, script_error);
}
}
return run_state;
}
void ThreadPlanPython::GetDescription(Stream *s, lldb::DescriptionLevel level) {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
if (m_implementation_sp) {
ScriptInterpreter *script_interp = GetScriptInterpreter();
if (script_interp) {
bool script_error;
bool added_desc = script_interp->ScriptedThreadPlanGetStopDescription(
m_implementation_sp, s, script_error);
if (script_error || !added_desc)
s->Printf("Python thread plan implemented by class %s.",
m_class_name.c_str());
}
return;
}
// It's an error not to have a description, so if we get here, we should
// add something.
if (m_stop_description.Empty())
s->Printf("Python thread plan implemented by class %s.",
m_class_name.c_str());
s->PutCString(m_stop_description.GetData());
}
// The ones below are not currently exported to Python.
bool ThreadPlanPython::WillStop() {
Log *log = GetLog(LLDBLog::Thread);
LLDB_LOGF(log, "%s called on Python Thread Plan: %s )", LLVM_PRETTY_FUNCTION,
m_class_name.c_str());
return true;
}
bool ThreadPlanPython::DoWillResume(lldb::StateType resume_state,
bool current_plan) {
m_stop_description.Clear();
return true;
}
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