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/*
* Copyright (C) 2021-2024 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include "shared/source/debug_settings/debug_settings_manager.h"
#include "shared/source/helpers/debug_helpers.h"
#include <level_zero/ze_api.h>
#include <atomic>
#include <limits>
#include <sstream>
namespace L0 {
class EuThread {
public:
enum class State {
running,
stopped,
unavailable
};
struct ThreadId {
union {
struct {
uint64_t thread : 4;
uint64_t eu : 5;
uint64_t subslice : 10;
uint64_t slice : 10;
uint64_t tileIndex : 2;
uint64_t reserved : 33;
};
uint64_t packed;
};
ThreadId(uint32_t tile, uint32_t slice, uint32_t subslice, uint32_t eu, uint32_t thread) {
this->packed = 0;
this->tileIndex = tile;
this->slice = slice;
this->subslice = subslice;
this->eu = eu;
this->thread = thread;
}
ThreadId(uint32_t tile, ze_device_thread_t thread) {
this->packed = 0;
this->tileIndex = tile;
this->slice = thread.slice;
this->subslice = thread.subslice;
this->eu = thread.eu;
this->thread = thread.thread;
}
operator uint64_t() const {
return packed;
}
};
virtual ~EuThread() = default;
EuThread(ThreadId threadId) : threadId(threadId) {}
bool stopThread(uint64_t memHandle) {
memoryHandle = memHandle;
if (state == State::stopped) {
return false;
}
state = State::stopped;
PRINT_DEBUGGER_THREAD_LOG("Stopped thread: %s", toString().c_str());
return true;
}
bool verifyStopped(uint8_t newCounter) {
PRINT_DEBUGGER_THREAD_LOG("EuThread::verifyStopped() Thread: %s newCounter == %d oldCounter == %d", toString().c_str(), (int32_t)newCounter, (int32_t)systemRoutineCounter);
if (newCounter == systemRoutineCounter) {
if (newCounter % 2 != 0) {
if (state == State::running) {
PRINT_DEBUGGER_ERROR_LOG("Thread: %s state RUNNING when thread is stopped. Switching to STOPPED", toString().c_str());
DEBUG_BREAK_IF(true);
}
state = State::stopped;
return true;
}
}
if (newCounter == (systemRoutineCounter + 2)) {
state = State::stopped;
systemRoutineCounter = newCounter;
return true;
} else if (newCounter > systemRoutineCounter + 2) {
PRINT_DEBUGGER_ERROR_LOG("Thread: %s state out of sync.", toString().c_str());
DEBUG_BREAK_IF(true);
}
if (newCounter % 2 == 0) {
if (state == State::stopped) {
PRINT_DEBUGGER_ERROR_LOG("Thread: %s state STOPPED when thread is running. Switching to RUNNING", toString().c_str());
DEBUG_BREAK_IF(true);
}
state = State::running;
systemRoutineCounter = newCounter;
return false;
}
state = State::stopped;
systemRoutineCounter = newCounter;
return true;
}
bool resumeThread() {
if (state != State::stopped) {
PRINT_DEBUGGER_THREAD_LOG("Resuming already RUNNING thread: %s", toString().c_str());
return false;
}
PRINT_DEBUGGER_THREAD_LOG("Resumed thread: %s", toString().c_str());
reportedAsStopped = false;
state = State::running;
memoryHandle = invalidHandle;
return true;
}
bool isStopped() const {
return state == State::stopped;
}
bool isRunning() const {
return state != State::stopped;
}
static std::string toString(ThreadId threadId) {
std::stringstream threadString;
threadString << "device index = " << threadId.tileIndex << " slice = " << threadId.slice << " subslice = " << threadId.subslice << " eu = " << threadId.eu
<< " thread = " << threadId.thread;
return threadString.str();
}
std::string toString() const {
return toString(threadId);
}
ThreadId getThreadId() const {
return threadId;
}
uint64_t getMemoryHandle() const { return memoryHandle; }
uint8_t getLastCounter() const {
return systemRoutineCounter;
}
void reportAsStopped() {
reportedAsStopped = true;
}
bool isReportedAsStopped() {
DEBUG_BREAK_IF(reportedAsStopped && state != State::stopped);
return reportedAsStopped;
}
void setPageFault(bool value) {
hasPageFault = value;
}
bool getPageFault() {
return hasPageFault;
}
void setContextHandle(uint64_t contextHandleParam) {
contextHandle = contextHandleParam;
}
void getContextHandle(uint64_t &contextHandleParam) const {
DEBUG_BREAK_IF(state != State::stopped);
contextHandleParam = contextHandle;
}
void setLrcHandle(uint64_t lrcHandleParam) {
lrcHandle = lrcHandleParam;
}
void getLrcHandle(uint64_t &lrcHandleParam) const {
DEBUG_BREAK_IF(state != State::stopped);
lrcHandleParam = lrcHandle;
}
public:
static constexpr uint64_t invalidHandle = std::numeric_limits<uint64_t>::max();
protected:
ThreadId threadId;
std::atomic<State> state = State::unavailable;
uint8_t systemRoutineCounter = 0;
std::atomic<uint64_t> memoryHandle = invalidHandle;
std::atomic<bool> reportedAsStopped = false;
bool hasPageFault = false;
uint64_t contextHandle = 0;
uint64_t lrcHandle = 0;
};
static_assert(sizeof(EuThread::ThreadId) == sizeof(uint64_t));
} // namespace L0
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