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Switching debugger to not retain XThreads.

This commit is contained in:
Ben Vanik 2016-01-01 15:35:48 -08:00
parent 1b487b67c9
commit 07ba1be7f5
4 changed files with 49 additions and 54 deletions
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48
src/xenia/debug/debugger.cc
View File

@ -183,10 +183,9 @@ std::vector<ThreadExecutionInfo*> Debugger::QueryThreadExecutionInfos() {
return result;
}
ThreadExecutionInfo* Debugger::QueryThreadExecutionInfo(
uint32_t thread_handle) {
ThreadExecutionInfo* Debugger::QueryThreadExecutionInfo(uint32_t thread_id) {
auto global_lock = global_critical_region_.Acquire();
const auto& it = thread_execution_infos_.find(thread_handle);
const auto& it = thread_execution_infos_.find(thread_id);
if (it == thread_execution_infos_.end()) {
return nullptr;
}
@ -232,8 +231,7 @@ bool Debugger::SuspendAllThreads() {
// Thread is a host thread, and we aren't suspending those (for now).
continue;
} else if (XThread::IsInThread() &&
thread_info->thread_handle ==
XThread::GetCurrentThreadHandle()) {
thread_info->thread_id == XThread::GetCurrentThreadId()) {
// Can't suspend ourselves.
continue;
}
@ -244,9 +242,9 @@ bool Debugger::SuspendAllThreads() {
return true;
}
bool Debugger::ResumeThread(uint32_t thread_handle) {
bool Debugger::ResumeThread(uint32_t thread_id) {
auto global_lock = global_critical_region_.Acquire();
auto it = thread_execution_infos_.find(thread_handle);
auto it = thread_execution_infos_.find(thread_id);
if (it == thread_execution_infos_.end()) {
return false;
}
@ -273,8 +271,7 @@ bool Debugger::ResumeAllThreads() {
// Thread is a host thread, and we aren't suspending those (for now).
continue;
} else if (XThread::IsInThread() &&
thread_info->thread_handle ==
XThread::GetCurrentThreadHandle()) {
thread_info->thread_id == XThread::GetCurrentThreadId()) {
// Can't resume ourselves.
continue;
}
@ -285,7 +282,7 @@ bool Debugger::ResumeAllThreads() {
return true;
}
void Debugger::UpdateThreadExecutionStates(uint32_t override_handle,
void Debugger::UpdateThreadExecutionStates(uint32_t override_thread_id,
X64Context* override_context) {
auto global_lock = global_critical_region_.Acquire();
auto stack_walker = emulator_->processor()->stack_walker();
@ -310,7 +307,7 @@ void Debugger::UpdateThreadExecutionStates(uint32_t override_handle,
// Grab stack trace and X64 context then resolve all symbols.
uint64_t hash;
X64Context* in_host_context = nullptr;
if (override_handle == thread_info->thread_handle) {
if (override_thread_id == thread_info->thread_id) {
// If we were passed an override context we use that. Otherwise, ask the
// stack walker for a new context.
in_host_context = override_context;
@ -392,12 +389,12 @@ void Debugger::Continue() {
}
}
void Debugger::StepGuestInstruction(uint32_t thread_handle) {
void Debugger::StepGuestInstruction(uint32_t thread_id) {
auto global_lock = global_critical_region_.Acquire();
assert_true(execution_state_ == ExecutionState::kPaused);
execution_state_ = ExecutionState::kStepping;
auto thread_info = thread_execution_infos_[thread_handle].get();
auto thread_info = thread_execution_infos_[thread_id].get();
uint32_t next_pc = CalculateNextGuestInstruction(
thread_info, thread_info->frames[0].guest_pc);
@ -409,15 +406,15 @@ void Debugger::StepGuestInstruction(uint32_t thread_handle) {
thread_info->step_breakpoint->Resume();
// ResumeAllBreakpoints();
ResumeThread(thread_handle);
ResumeThread(thread_id);
}
void Debugger::StepHostInstruction(uint32_t thread_handle) {
void Debugger::StepHostInstruction(uint32_t thread_id) {
auto global_lock = global_critical_region_.Acquire();
assert_true(execution_state_ == ExecutionState::kPaused);
execution_state_ = ExecutionState::kStepping;
auto thread_info = thread_execution_infos_[thread_handle].get();
auto thread_info = thread_execution_infos_[thread_id].get();
uint64_t new_host_pc =
CalculateNextHostInstruction(thread_info, thread_info->frames[0].host_pc);
@ -428,23 +425,24 @@ void Debugger::StepHostInstruction(uint32_t thread_handle) {
thread_info->step_breakpoint->Resume();
// ResumeAllBreakpoints();
ResumeThread(thread_handle);
ResumeThread(thread_id);
}
void Debugger::OnThreadCreated(XThread* thread) {
auto global_lock = global_critical_region_.Acquire();
auto thread_info = std::make_unique<ThreadExecutionInfo>();
thread_info->thread_handle = thread->handle();
thread_info->thread_id = thread->thread_id();
thread_info->thread = thread;
thread_info->state = ThreadExecutionInfo::State::kAlive;
thread_info->suspended = false;
thread_execution_infos_.emplace(thread_info->thread_handle,
thread_execution_infos_.emplace(thread_info->thread_id,
std::move(thread_info));
}
void Debugger::OnThreadExit(XThread* thread) {
auto global_lock = global_critical_region_.Acquire();
auto it = thread_execution_infos_.find(thread->handle());
auto it = thread_execution_infos_.find(thread->thread_id());
assert_true(it != thread_execution_infos_.end());
auto thread_info = it->second.get();
thread_info->state = ThreadExecutionInfo::State::kExited;
@ -452,7 +450,7 @@ void Debugger::OnThreadExit(XThread* thread) {
void Debugger::OnThreadDestroyed(XThread* thread) {
auto global_lock = global_critical_region_.Acquire();
auto it = thread_execution_infos_.find(thread->handle());
auto it = thread_execution_infos_.find(thread->thread_id());
assert_true(it != thread_execution_infos_.end());
auto thread_info = it->second.get();
// TODO(benvanik): retain the thread?
@ -462,7 +460,7 @@ void Debugger::OnThreadDestroyed(XThread* thread) {
void Debugger::OnThreadEnteringWait(XThread* thread) {
auto global_lock = global_critical_region_.Acquire();
auto it = thread_execution_infos_.find(thread->handle());
auto it = thread_execution_infos_.find(thread->thread_id());
assert_true(it != thread_execution_infos_.end());
auto thread_info = it->second.get();
thread_info->state = ThreadExecutionInfo::State::kWaiting;
@ -470,7 +468,7 @@ void Debugger::OnThreadEnteringWait(XThread* thread) {
void Debugger::OnThreadLeavingWait(XThread* thread) {
auto global_lock = global_critical_region_.Acquire();
auto it = thread_execution_infos_.find(thread->handle());
auto it = thread_execution_infos_.find(thread->thread_id());
assert_true(it != thread_execution_infos_.end());
auto thread_info = it->second.get();
if (thread_info->state == ThreadExecutionInfo::State::kWaiting) {
@ -531,7 +529,7 @@ bool Debugger::ExceptionCallback(Exception* ex) {
SuspendAllThreads();
// Lookup thread info block.
auto it = thread_execution_infos_.find(XThread::GetCurrentThreadHandle());
auto it = thread_execution_infos_.find(XThread::GetCurrentThreadId());
if (it == thread_execution_infos_.end()) {
// Not found - exception on a thread we don't know about?
assert_always("UD2 on a thread we don't track");
@ -548,7 +546,7 @@ bool Debugger::ExceptionCallback(Exception* ex) {
// Update all thread states with their latest values, using the context we got
// from the exception instead of a sampled value (as it would just show the
// exception handler).
UpdateThreadExecutionStates(thread_info->thread_handle, ex->thread_context());
UpdateThreadExecutionStates(thread_info->thread_id, ex->thread_context());
// Whether we should block waiting for a continue event.
bool wait_for_continue = false;
@ -673,7 +671,7 @@ bool Debugger::OnUnhandledException(Exception* ex) {
// Suspend all guest threads (but this one).
SuspendAllThreads();
UpdateThreadExecutionStates(XThread::GetCurrentThreadHandle(),
UpdateThreadExecutionStates(XThread::GetCurrentThreadId(),
ex->thread_context());
// Stop and notify the listener.

11
src/xenia/debug/debugger.h
View File

@ -74,7 +74,10 @@ struct ThreadExecutionInfo {
kZombie,
};
// XThread::thread_id(), unique to the thread for the run of the emulator.
uint32_t thread_id = 0;
// XThread::handle() of the thread.
// This will be invalidated when the thread dies.
uint32_t thread_handle = 0;
// Target XThread, if it has not been destroyed.
// TODO(benvanik): hold a ref here to keep zombie threads around?
@ -203,7 +206,7 @@ class Debugger {
// the kernel.
std::vector<ThreadExecutionInfo*> QueryThreadExecutionInfos();
// Returns the debugger info for the given thread.
ThreadExecutionInfo* QueryThreadExecutionInfo(uint32_t thread_handle);
ThreadExecutionInfo* QueryThreadExecutionInfo(uint32_t thread_id);
// Adds a breakpoint to the debugger and activates it (if enabled).
// The given breakpoint will not be owned by the debugger and must remain
@ -230,10 +233,10 @@ class Debugger {
// Steps the given thread a single PPC guest instruction.
// If the step is over a branch the branch will be followed.
void StepGuestInstruction(uint32_t thread_handle);
void StepGuestInstruction(uint32_t thread_id);
// Steps the given thread a single x64 host instruction.
// If the step is over a branch the branch will be followed.
void StepHostInstruction(uint32_t thread_handle);
void StepHostInstruction(uint32_t thread_id);
public:
// TODO(benvanik): hide.
@ -254,7 +257,7 @@ class Debugger {
// Suspends all known threads (except the caller).
bool SuspendAllThreads();
// Resumes the given thread.
bool ResumeThread(uint32_t thread_handle);
bool ResumeThread(uint32_t thread_id);
// Resumes all known threads (except the caller).
bool ResumeAllThreads();
// Updates all cached thread execution info (state, call stacks, etc).

37
src/xenia/debug/ui/debug_window.cc
View File

@ -293,8 +293,8 @@ void DebugWindow::DrawToolbar() {
if (ImGui::Combo("##thread_combo", &current_thread_index,
thread_combo.GetString(), 10)) {
// Thread changed.
SelectThreadStackFrame(
cache_.thread_execution_infos[current_thread_index]->thread, 0, true);
SelectThreadStackFrame(cache_.thread_execution_infos[current_thread_index],
0, true);
}
}
@ -347,12 +347,12 @@ void DebugWindow::DrawSourcePane() {
ImGui::BeginGroup();
ImGui::PushButtonRepeat(true);
bool can_step = !cache_.is_running && state_.thread;
bool can_step = !cache_.is_running && state_.thread_info;
if (ImGui::ButtonEx("Step PPC", ImVec2(0, 0),
can_step ? 0 : ImGuiButtonFlags_Disabled)) {
// By enabling the button when stepping we allow repeat behavior.
if (debugger_->execution_state() != ExecutionState::kStepping) {
debugger_->StepGuestInstruction(state_.thread->handle());
debugger_->StepGuestInstruction(state_.thread_info->thread_id);
}
}
ImGui::PopButtonRepeat();
@ -370,7 +370,7 @@ void DebugWindow::DrawSourcePane() {
can_step ? 0 : ImGuiButtonFlags_Disabled)) {
// By enabling the button when stepping we allow repeat behavior.
if (debugger_->execution_state() != ExecutionState::kStepping) {
debugger_->StepHostInstruction(state_.thread->handle());
debugger_->StepHostInstruction(state_.thread_info->thread_id);
}
}
ImGui::PopButtonRepeat();
@ -993,8 +993,8 @@ void DebugWindow::DrawThreadsPane() {
ImGui::BeginChild("##threads_listing");
for (size_t i = 0; i < cache_.thread_execution_infos.size(); ++i) {
auto thread_info = cache_.thread_execution_infos[i];
bool is_current_thread = thread_info == state_.thread_info;
auto thread = thread_info->thread;
bool is_current_thread = thread == state_.thread;
if (!thread) {
// TODO(benvanik): better display of zombie thread states.
continue;
@ -1009,7 +1009,7 @@ void DebugWindow::DrawThreadsPane() {
ImGui::PushStyleColor(ImGuiCol_Header,
ImGui::GetStyle().Colors[ImGuiCol_HeaderActive]);
}
ImGui::PushID(thread);
ImGui::PushID(thread_info);
if (is_current_thread) {
ImGui::SetNextTreeNodeOpened(true, ImGuiSetCond_Always);
}
@ -1049,7 +1049,7 @@ void DebugWindow::DrawThreadsPane() {
frame.host_pc, &frame);
if (ImGui::Selectable(host_label, is_current_frame,
ImGuiSelectableFlags_SpanAllColumns)) {
SelectThreadStackFrame(thread, j, true);
SelectThreadStackFrame(thread_info, j, true);
}
ImGui::SameLine();
ImGui::Dummy(ImVec2(8, 0));
@ -1386,21 +1386,13 @@ void DebugWindow::DrawLogPane() {
// if big, click to open dialog with contents
}
void DebugWindow::SelectThreadStackFrame(XThread* thread,
void DebugWindow::SelectThreadStackFrame(ThreadExecutionInfo* thread_info,
size_t stack_frame_index,
bool always_navigate) {
state_.has_changed_thread = false;
if (thread != state_.thread) {
if (thread_info != state_.thread_info) {
state_.has_changed_thread = true;
state_.thread = thread;
state_.thread_info = nullptr;
for (auto thread_info : cache_.thread_execution_infos) {
if (thread_info->thread == thread) {
state_.thread_info = thread_info;
break;
}
}
}
if (state_.thread_info) {
stack_frame_index =
@ -1469,7 +1461,8 @@ void DebugWindow::UpdateCache() {
cache_.thread_execution_infos = debugger_->QueryThreadExecutionInfos();
SelectThreadStackFrame(state_.thread, state_.thread_stack_frame_index, false);
SelectThreadStackFrame(state_.thread_info, state_.thread_stack_frame_index,
false);
}
void DebugWindow::CreateCodeBreakpoint(CodeBreakpoint::AddressType address_type,
@ -1582,14 +1575,16 @@ void DebugWindow::OnExecutionEnded() {
void DebugWindow::OnStepCompleted(xe::kernel::XThread* thread) {
UpdateCache();
SelectThreadStackFrame(thread, 0, true);
auto thread_info = debugger_->QueryThreadExecutionInfo(thread->thread_id());
SelectThreadStackFrame(thread_info, 0, true);
loop_->Post([this]() { window_->set_focus(true); });
}
void DebugWindow::OnBreakpointHit(Breakpoint* breakpoint,
xe::kernel::XThread* thread) {
UpdateCache();
SelectThreadStackFrame(thread, 0, true);
auto thread_info = debugger_->QueryThreadExecutionInfo(thread->thread_id());
SelectThreadStackFrame(thread_info, 0, true);
loop_->Post([this]() { window_->set_focus(true); });
}

5
src/xenia/debug/ui/debug_window.h
View File

@ -69,8 +69,8 @@ class DebugWindow : public DebugListener {
void DrawBreakpointsPane();
void DrawLogPane();
void SelectThreadStackFrame(kernel::XThread* thread, size_t stack_frame_index,
bool always_navigate);
void SelectThreadStackFrame(ThreadExecutionInfo* thread_info,
size_t stack_frame_index, bool always_navigate);
void NavigateToFunction(cpu::Function* function, uint32_t guest_pc = 0,
uint64_t host_pc = 0);
// void NavigateToMemory(uint64_t address, uint64_t length = 0);
@ -117,7 +117,6 @@ class DebugWindow : public DebugListener {
static const int kRightPaneMemory = 1;
int right_pane_tab = kRightPaneThreads;
xe::kernel::XThread* thread = nullptr;
ThreadExecutionInfo* thread_info = nullptr;
size_t thread_stack_frame_index = 0;
bool has_changed_thread = false;