C++ FileSpec::GetModificationTime方法代码示例

Module::Module(const FileSpec& file_spec, const ArchSpec& arch, const ConstString *object_name, off_t object_offset) :
    m_mutex (Mutex::eMutexTypeRecursive),
    m_mod_time (file_spec.GetModificationTime()),
    m_arch (arch),
    m_uuid (),
    m_file (file_spec),
    m_object_name (),
    m_objfile_ap (),
    m_symfile_ap (),
    m_ast (),
    m_did_load_objfile (false),
    m_did_load_symbol_vendor (false),
    m_did_parse_uuid (false),
    m_did_init_ast (false),
    m_is_dynamic_loader_module (false)
{
    if (object_name)
        m_object_name = *object_name;
    LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT));
    if (log)
        log->Printf ("%p Module::Module((%s) '%s/%s%s%s%s')",
                     this,
                     m_arch.GetArchitectureName(),
                     m_file.GetDirectory().AsCString(""),
                     m_file.GetFilename().AsCString(""),
                     m_object_name.IsEmpty() ? "" : "(",
                     m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""),
                     m_object_name.IsEmpty() ? "" : ")");
}

SourceManager::File::File(const FileSpec &file_spec,
                          lldb::DebuggerSP debugger_sp)
    : m_file_spec_orig(file_spec), m_file_spec(file_spec),
      m_mod_time(file_spec.GetModificationTime()), m_source_map_mod_id(0),
      m_data_sp(), m_offsets(), m_debugger_wp(debugger_sp) {
  CommonInitializer(file_spec, nullptr);
}

Module::Module(const FileSpec& file_spec, const ArchSpec& arch, const ConstString *object_name, off_t object_offset) :
    m_mutex (Mutex::eMutexTypeRecursive),
    m_mod_time (file_spec.GetModificationTime()),
    m_arch (arch),
    m_uuid (),
    m_file (file_spec),
    m_flags (),
    m_object_name (),
    m_objfile_ap (),
    m_symfile_ap ()
{
    if (object_name)
        m_object_name = *object_name;
    Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT);
    if (log)
        log->Printf ("%p Module::Module((%s) '%s/%s%s%s%s')",
                     this,
                     m_arch.AsCString(),
                     m_file.GetDirectory().AsCString(""),
                     m_file.GetFilename().AsCString(""),
                     m_object_name.IsEmpty() ? "" : "(",
                     m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""),
                     m_object_name.IsEmpty() ? "" : ")");

}

SourceManager::File::File(const FileSpec &file_spec, Target *target)
    : m_file_spec_orig(file_spec), m_file_spec(file_spec),
      m_mod_time(file_spec.GetModificationTime()), m_source_map_mod_id(0),
      m_data_sp(), m_offsets(),
      m_debugger_wp(target ? target->GetDebugger().shared_from_this()
                           : DebuggerSP()) {
  CommonInitializer(file_spec, target);
}

void
Module::SetFileSpecAndObjectName (const FileSpec &file, const ConstString &object_name)
{
    // Container objects whose paths do not specify a file directly can call
    // this function to correct the file and object names.
    m_file = file;
    m_mod_time = file.GetModificationTime();
    m_object_name = object_name;
}

Error
AdbClient::PushFile (const FileSpec &local_file, const FileSpec &remote_file)
{
    auto error = StartSync ();
    if (error.Fail ())
        return error;

    const auto local_file_path (local_file.GetPath ());
    std::ifstream src (local_file_path.c_str(), std::ios::in | std::ios::binary);
    if (!src.is_open ())
        return Error ("Unable to open local file %s", local_file_path.c_str());

    std::stringstream file_description;
    file_description << remote_file.GetPath(false).c_str() << "," << kDefaultMode;
    std::string file_description_str = file_description.str();
    error = SendSyncRequest (kSEND, file_description_str.length(), file_description_str.c_str());
    if (error.Fail ())
        return error;

    char chunk[kMaxPushData];
    while (!src.eof() && !src.read(chunk, kMaxPushData).bad())
    {
        size_t chunk_size = src.gcount();
        error = SendSyncRequest(kDATA, chunk_size, chunk);
        if (error.Fail ())
            return Error ("Failed to send file chunk: %s", error.AsCString ());
    }
    error = SendSyncRequest(kDONE, local_file.GetModificationTime().seconds(), nullptr);
    if (error.Fail ())
        return error;

    std::string response_id;
    uint32_t data_len;
    error = ReadSyncHeader (response_id, data_len);
    if (error.Fail ())
        return Error ("Failed to read DONE response: %s", error.AsCString ());
    if (response_id == kFAIL)
    {
        std::string error_message (data_len, 0);
        error = ReadAllBytes (&error_message[0], data_len);
        if (error.Fail ())
            return Error ("Failed to read DONE error message: %s", error.AsCString ());
        return Error ("Failed to push file: %s", error_message.c_str ());
    }
    else if (response_id != kOKAY)
        return Error ("Got unexpected DONE response: %s", response_id.c_str ());

    // If there was an error reading the source file, finish the adb file
    // transfer first so that adb isn't expecting any more data.
    if (src.bad())
        return Error ("Failed read on %s", local_file_path.c_str());
    return error;
}

SourceManager::File::File(const FileSpec &file_spec, Target *target) :
    m_file_spec_orig (file_spec),
    m_file_spec(file_spec),
    m_mod_time (file_spec.GetModificationTime()),
    m_data_sp(),
    m_offsets()
{
    if (!m_mod_time.IsValid())
    {
        if (target)
        {
            if (!file_spec.GetDirectory() && file_spec.GetFilename())
            {
                // If this is just a file name, lets see if we can find it in the target:
                bool check_inlines = false;
                SymbolContextList sc_list;
                size_t num_matches = target->GetImages().ResolveSymbolContextForFilePath (file_spec.GetFilename().AsCString(),
                                                                                          0,
                                                                                          check_inlines,
                                                                                          lldb::eSymbolContextModule | lldb::eSymbolContextCompUnit,
                                                                                          sc_list);
                bool got_multiple = false;
                if (num_matches != 0)
                {
                    if (num_matches > 1)
                    {
                        SymbolContext sc;
                        FileSpec *test_cu_spec = NULL;

                        for (unsigned i = 0; i < num_matches; i++)
                        {
                            sc_list.GetContextAtIndex(i, sc);
                            if (sc.comp_unit)
                            {
                                if (test_cu_spec)
                                {
                                    if (test_cu_spec != static_cast<FileSpec *> (sc.comp_unit))
                                        got_multiple = true;
                                        break;
                                }
                                else
                                    test_cu_spec = sc.comp_unit;
                            }
                        }
                    }
                    if (!got_multiple)
                    {
                        SymbolContext sc;
                        sc_list.GetContextAtIndex (0, sc);
                        m_file_spec = sc.comp_unit;
                        m_mod_time = m_file_spec.GetModificationTime();
                    }
                }
            }
            // Try remapping if m_file_spec does not correspond to an existing file.
            if (!m_file_spec.Exists())
            {
                FileSpec new_file_spec;
                // Check target specific source remappings first, then fall back to
                // modules objects can have individual path remappings that were detected
                // when the debug info for a module was found.
                // then
                if (target->GetSourcePathMap().FindFile (m_file_spec, new_file_spec) ||
                    target->GetImages().FindSourceFile (m_file_spec, new_file_spec))
                {
                    m_file_spec = new_file_spec;
                    m_mod_time = m_file_spec.GetModificationTime();
                }
            }
        }
    }
    
    if (m_mod_time.IsValid())
        m_data_sp = m_file_spec.ReadFileContents ();
}

Error
ModuleList::GetSharedModule
(
    const FileSpec& in_file_spec,
    const ArchSpec& arch,
    const lldb_private::UUID *uuid_ptr,
    const ConstString *object_name_ptr,
    off_t object_offset,
    ModuleSP &module_sp,
    ModuleSP *old_module_sp_ptr,
    bool *did_create_ptr,
    bool always_create
)
{
    ModuleList &shared_module_list = GetSharedModuleList ();
    Mutex::Locker locker(shared_module_list.m_modules_mutex);
    char path[PATH_MAX];
    char uuid_cstr[64];

    Error error;

    module_sp.reset();

    if (did_create_ptr)
        *did_create_ptr = false;
    if (old_module_sp_ptr)
        old_module_sp_ptr->reset();


    // First just try and get the file where it purports to be (path in
    // in_file_spec), then check and uuid.

    if (in_file_spec)
    {
        // Make sure no one else can try and get or create a module while this
        // function is actively working on it by doing an extra lock on the
        // global mutex list.
        if (always_create == false)
        {
            ModuleList matching_module_list;
            const size_t num_matching_modules = shared_module_list.FindModules (&in_file_spec, &arch, NULL, object_name_ptr, matching_module_list);
            if (num_matching_modules > 0)
            {
                for (uint32_t module_idx = 0; module_idx < num_matching_modules; ++module_idx)
                {
                    module_sp = matching_module_list.GetModuleAtIndex(module_idx);
                    if (uuid_ptr && uuid_ptr->IsValid())
                    {
                        // We found the module we were looking for.
                        if (module_sp->GetUUID() == *uuid_ptr)
                            return error;
                    }
                    else
                    {
                        // If we didn't have a UUID in mind when looking for the object file,
                        // then we should make sure the modification time hasn't changed!
                        TimeValue file_spec_mod_time(in_file_spec.GetModificationTime());
                        if (file_spec_mod_time.IsValid())
                        {
                            if (file_spec_mod_time == module_sp->GetModificationTime())
                                return error;
                        }
                    }
                    if (old_module_sp_ptr && !old_module_sp_ptr->get())
                        *old_module_sp_ptr = module_sp;
                    shared_module_list.Remove (module_sp);
                    module_sp.reset();
                }
            }
        }

        if (module_sp)
            return error;
        else
        {
#if defined ENABLE_MODULE_SP_LOGGING
            ModuleSP logging_module_sp (new Module (in_file_spec, arch, object_name_ptr, object_offset), ModuleSharedPtrLogger, (void *)ConstString("a.out").GetCString());
            module_sp = logging_module_sp;
#else
            module_sp.reset (new Module (in_file_spec, arch, object_name_ptr, object_offset));
#endif
            // Make sure there are a module and an object file since we can specify
            // a valid file path with an architecture that might not be in that file.
            // By getting the object file we can guarantee that the architecture matches
            if (module_sp && module_sp->GetObjectFile())
            {
                // If we get in here we got the correct arch, now we just need
                // to verify the UUID if one was given
                if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
                    module_sp.reset();
                else
                {
                    if (did_create_ptr)
                        *did_create_ptr = true;
                    
                    shared_module_list.Append(module_sp);
                    return error;
                }
            }
        }
//.........这里部分代码省略.........