mirror of
https://github.com/intel/llvm.git
synced 2026-01-15 12:25:46 +08:00
2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
281 lines
9.5 KiB
C++
281 lines
9.5 KiB
C++
//===-- ThreadPlan.cpp ------------------------------------------*- C++ -*-===//
|
|
//
|
|
// 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/Target/Process.h"
|
|
#include "lldb/Target/RegisterContext.h"
|
|
#include "lldb/Target/Target.h"
|
|
#include "lldb/Target/Thread.h"
|
|
#include "lldb/Utility/Log.h"
|
|
#include "lldb/Utility/State.h"
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
|
|
//----------------------------------------------------------------------
|
|
// ThreadPlan constructor
|
|
//----------------------------------------------------------------------
|
|
ThreadPlan::ThreadPlan(ThreadPlanKind kind, const char *name, Thread &thread,
|
|
Vote stop_vote, Vote run_vote)
|
|
: m_thread(thread), m_stop_vote(stop_vote), m_run_vote(run_vote),
|
|
m_takes_iteration_count(false), m_could_not_resolve_hw_bp(false),
|
|
m_kind(kind), m_name(name), m_plan_complete_mutex(),
|
|
m_cached_plan_explains_stop(eLazyBoolCalculate), m_plan_complete(false),
|
|
m_plan_private(false), m_okay_to_discard(true), m_is_master_plan(false),
|
|
m_plan_succeeded(true) {
|
|
SetID(GetNextID());
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Destructor
|
|
//----------------------------------------------------------------------
|
|
ThreadPlan::~ThreadPlan() = default;
|
|
|
|
bool ThreadPlan::PlanExplainsStop(Event *event_ptr) {
|
|
if (m_cached_plan_explains_stop == eLazyBoolCalculate) {
|
|
bool actual_value = DoPlanExplainsStop(event_ptr);
|
|
m_cached_plan_explains_stop = actual_value ? eLazyBoolYes : eLazyBoolNo;
|
|
return actual_value;
|
|
} else {
|
|
return m_cached_plan_explains_stop == eLazyBoolYes;
|
|
}
|
|
}
|
|
|
|
bool ThreadPlan::IsPlanComplete() {
|
|
std::lock_guard<std::recursive_mutex> guard(m_plan_complete_mutex);
|
|
return m_plan_complete;
|
|
}
|
|
|
|
void ThreadPlan::SetPlanComplete(bool success) {
|
|
std::lock_guard<std::recursive_mutex> guard(m_plan_complete_mutex);
|
|
m_plan_complete = true;
|
|
m_plan_succeeded = success;
|
|
}
|
|
|
|
bool ThreadPlan::MischiefManaged() {
|
|
std::lock_guard<std::recursive_mutex> guard(m_plan_complete_mutex);
|
|
// Mark the plan is complete, but don't override the success flag.
|
|
m_plan_complete = true;
|
|
return true;
|
|
}
|
|
|
|
Vote ThreadPlan::ShouldReportStop(Event *event_ptr) {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP));
|
|
|
|
if (m_stop_vote == eVoteNoOpinion) {
|
|
ThreadPlan *prev_plan = GetPreviousPlan();
|
|
if (prev_plan) {
|
|
Vote prev_vote = prev_plan->ShouldReportStop(event_ptr);
|
|
LLDB_LOG(log, "returning previous thread plan vote: {0}", prev_vote);
|
|
return prev_vote;
|
|
}
|
|
}
|
|
LLDB_LOG(log, "Returning vote: {0}", m_stop_vote);
|
|
return m_stop_vote;
|
|
}
|
|
|
|
Vote ThreadPlan::ShouldReportRun(Event *event_ptr) {
|
|
if (m_run_vote == eVoteNoOpinion) {
|
|
ThreadPlan *prev_plan = GetPreviousPlan();
|
|
if (prev_plan)
|
|
return prev_plan->ShouldReportRun(event_ptr);
|
|
}
|
|
return m_run_vote;
|
|
}
|
|
|
|
bool ThreadPlan::StopOthers() {
|
|
ThreadPlan *prev_plan;
|
|
prev_plan = GetPreviousPlan();
|
|
return (prev_plan == nullptr) ? false : prev_plan->StopOthers();
|
|
}
|
|
|
|
void ThreadPlan::SetStopOthers(bool new_value) {
|
|
// SetStopOthers doesn't work up the hierarchy. You have to set the explicit
|
|
// ThreadPlan you want to affect.
|
|
}
|
|
|
|
bool ThreadPlan::WillResume(StateType resume_state, bool current_plan) {
|
|
m_cached_plan_explains_stop = eLazyBoolCalculate;
|
|
|
|
if (current_plan) {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP));
|
|
|
|
if (log) {
|
|
RegisterContext *reg_ctx = m_thread.GetRegisterContext().get();
|
|
assert(reg_ctx);
|
|
addr_t pc = reg_ctx->GetPC();
|
|
addr_t sp = reg_ctx->GetSP();
|
|
addr_t fp = reg_ctx->GetFP();
|
|
log->Printf(
|
|
"%s Thread #%u (0x%p): tid = 0x%4.4" PRIx64 ", pc = 0x%8.8" PRIx64
|
|
", sp = 0x%8.8" PRIx64 ", fp = 0x%8.8" PRIx64 ", "
|
|
"plan = '%s', state = %s, stop others = %d",
|
|
__FUNCTION__, m_thread.GetIndexID(), static_cast<void *>(&m_thread),
|
|
m_thread.GetID(), static_cast<uint64_t>(pc),
|
|
static_cast<uint64_t>(sp), static_cast<uint64_t>(fp), m_name.c_str(),
|
|
StateAsCString(resume_state), StopOthers());
|
|
}
|
|
}
|
|
return DoWillResume(resume_state, current_plan);
|
|
}
|
|
|
|
lldb::user_id_t ThreadPlan::GetNextID() {
|
|
static uint32_t g_nextPlanID = 0;
|
|
return ++g_nextPlanID;
|
|
}
|
|
|
|
void ThreadPlan::DidPush() {}
|
|
|
|
void ThreadPlan::WillPop() {}
|
|
|
|
bool ThreadPlan::OkayToDiscard() {
|
|
return IsMasterPlan() ? m_okay_to_discard : true;
|
|
}
|
|
|
|
lldb::StateType ThreadPlan::RunState() {
|
|
if (m_tracer_sp && m_tracer_sp->TracingEnabled() &&
|
|
m_tracer_sp->SingleStepEnabled())
|
|
return eStateStepping;
|
|
else
|
|
return GetPlanRunState();
|
|
}
|
|
|
|
bool ThreadPlan::IsUsuallyUnexplainedStopReason(lldb::StopReason reason) {
|
|
switch (reason) {
|
|
case eStopReasonWatchpoint:
|
|
case eStopReasonSignal:
|
|
case eStopReasonException:
|
|
case eStopReasonExec:
|
|
case eStopReasonThreadExiting:
|
|
case eStopReasonInstrumentation:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// ThreadPlanNull
|
|
//----------------------------------------------------------------------
|
|
|
|
ThreadPlanNull::ThreadPlanNull(Thread &thread)
|
|
: ThreadPlan(ThreadPlan::eKindNull, "Null Thread Plan", thread,
|
|
eVoteNoOpinion, eVoteNoOpinion) {}
|
|
|
|
ThreadPlanNull::~ThreadPlanNull() = default;
|
|
|
|
void ThreadPlanNull::GetDescription(Stream *s, lldb::DescriptionLevel level) {
|
|
s->PutCString("Null thread plan - thread has been destroyed.");
|
|
}
|
|
|
|
bool ThreadPlanNull::ValidatePlan(Stream *error) {
|
|
#ifdef LLDB_CONFIGURATION_DEBUG
|
|
fprintf(stderr,
|
|
"error: %s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(), m_thread.GetProtocolID());
|
|
#else
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
|
|
if (log)
|
|
log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(),
|
|
m_thread.GetProtocolID());
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
bool ThreadPlanNull::ShouldStop(Event *event_ptr) {
|
|
#ifdef LLDB_CONFIGURATION_DEBUG
|
|
fprintf(stderr,
|
|
"error: %s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(), m_thread.GetProtocolID());
|
|
#else
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
|
|
if (log)
|
|
log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(),
|
|
m_thread.GetProtocolID());
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
bool ThreadPlanNull::WillStop() {
|
|
#ifdef LLDB_CONFIGURATION_DEBUG
|
|
fprintf(stderr,
|
|
"error: %s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(), m_thread.GetProtocolID());
|
|
#else
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
|
|
if (log)
|
|
log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(),
|
|
m_thread.GetProtocolID());
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
bool ThreadPlanNull::DoPlanExplainsStop(Event *event_ptr) {
|
|
#ifdef LLDB_CONFIGURATION_DEBUG
|
|
fprintf(stderr,
|
|
"error: %s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(), m_thread.GetProtocolID());
|
|
#else
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
|
|
if (log)
|
|
log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(),
|
|
m_thread.GetProtocolID());
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
// The null plan is never done.
|
|
bool ThreadPlanNull::MischiefManaged() {
|
|
// The null plan is never done.
|
|
#ifdef LLDB_CONFIGURATION_DEBUG
|
|
fprintf(stderr,
|
|
"error: %s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(), m_thread.GetProtocolID());
|
|
#else
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
|
|
if (log)
|
|
log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(),
|
|
m_thread.GetProtocolID());
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
lldb::StateType ThreadPlanNull::GetPlanRunState() {
|
|
// Not sure what to return here. This is a dead thread.
|
|
#ifdef LLDB_CONFIGURATION_DEBUG
|
|
fprintf(stderr,
|
|
"error: %s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(), m_thread.GetProtocolID());
|
|
#else
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
|
|
if (log)
|
|
log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64
|
|
", ptid = 0x%" PRIx64 ")",
|
|
LLVM_PRETTY_FUNCTION, m_thread.GetID(),
|
|
m_thread.GetProtocolID());
|
|
#endif
|
|
return eStateRunning;
|
|
}
|