thread_info.hpp

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// ===-- include/psystem/thread_info.hpp ------------------ -*- C++ -*- --=== //
// Copyright (c) 2014 Matt Bisson.  All rights reserved.

#pragma once
#ifndef PSYSTEM_THREAD_INFO_HPP
#define PSYSTEM_THREAD_INFO_HPP

#include "psystem_ns.hpp"
#include "stack_frame.hpp"

#include <mutex>
#include <vector>

#include <psystem/framework/memory.hpp>
#include <psystem/framework/not_assignable.hpp>

namespace psystem {

class dbghelp_symbol_engine;
class process_info;

class thread_info
    : public psystem::not_assignable
{
public:
    typedef void* (__stdcall *address_to_symbol_func)(HANDLE, DWORD64);

    typedef DWORD64(__stdcall *get_module_base_func)(HANDLE, DWORD64);

    using stack_trace = std::vector<stack_frame>;

public:
    thread_info(
        process_id_t pid,
        thread_id_t tid,
        CREATE_PROCESS_DEBUG_INFO const& info) noexcept;

    thread_info(
        process_id_t pid,
        thread_id_t tid,
        CREATE_THREAD_DEBUG_INFO const& info) noexcept;

public:
    process_id_t get_process_id() const noexcept;

    HANDLE get_thread_handle() const noexcept;

    thread_id_t get_thread_id() const noexcept;

public:
    stack_trace const& get_stack_trace(
        process_info const& proc,
        address_to_symbol_func address_to_symbol,
        get_module_base_func get_module_base) const;

private:
    static void generate_stack_trace(
        HANDLE process_handle,
        HANDLE thread_handle,
        address_to_symbol_func address_to_symbol,
        get_module_base_func get_module_base,
        std::unique_ptr<stack_trace> *out);

private:
    HANDLE m_thread_handle;

    thread_id_t const m_thread_id;

    process_id_t const m_process_id;

    std::unique_ptr<stack_trace> mutable m_stack_trace;

    std::once_flag mutable m_stack_trace_lock;
};

} // namespace psystem

#endif // PSYSTEM_THREAD_INFO_HPP