TaskManager Class Reference

Inheritance diagram for TaskManager:

List of all members.

Public Member Functions
	TaskManager (MasterConfigTree &config_tree, ModuleManager &mmgr, XorpClient &xclient, bool global_do_exec, bool verbose)
void	set_do_exec (bool do_exec, bool is_verification)
void	reset ()
int	add_module (const ModuleCommand &mod_cmd, string &error_msg)
void	add_xrl (const string &module_name, const UnexpandedXrl &xrl, XrlRouter::XrlCallback &cb)
void	add_program (const string &module_name, const UnexpandedProgram &program, TaskProgramItem::ProgramCallback program_cb)
void	shutdown_module (const string &module_name)
void	run (CallBack cb)
XorpClient &	xorp_client () const
ModuleManager &	module_manager () const
MasterConfigTree &	config_tree () const
bool	do_exec () const
bool	is_verification () const
bool	verbose () const
EventLoop &	eventloop () const
void	kill_process (const string &module_name)
	kill_process is used to kill a fatally wounded process
const RunShellCommand::ExecId &	exec_id () const
	Get a reference to the ExecId object.
void	set_exec_id (const RunShellCommand::ExecId &v)
	Set the execution ID for executing the tasks.
Private Types
typedef XorpCallback2< void, bool, string >::RefPtr	CallBack
Private Member Functions
void	reorder_tasks ()
void	run_task ()
void	task_done (bool success, const string &errmsg)
void	fail_tasklist_initialization (const string &errmsg)
Task &	find_task (const string &module_name)
void	null_callback ()
Private Attributes
MasterConfigTree &	_config_tree
ModuleManager &	_module_manager
XorpClient &	_xorp_client
bool	_global_do_exec
bool	_current_do_exec
bool	_is_verification
bool	_verbose
map< string, Task * >	_tasks
list< Task * >	_tasklist
list< Task * >	_shutdown_order
map< string, const ModuleCommand * >	_module_commands
RunShellCommand::ExecId	_exec_id
CallBack	_completion_cb

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Member Function Documentation

const RunShellCommand::ExecId& TaskManager::exec_id

(

)

const [inline]

Get a reference to the ExecId object.

Returns:

a reference to the ExecId object that is used for setting the execution ID when running the tasks.

void TaskManager::kill_process

(

const string &

module_name

)

kill_process is used to kill a fatally wounded process

kill_process is used to kill a fatally wounded process. This does not politely ask the process to die, because if we get here we can't communicate with the process using XRLs or any other mechanism, so we just kill it outright.

Parameters:

module_name

the module name of the process to be killed.

void TaskManager::set_exec_id

(

const RunShellCommand::ExecId &

v

)

[inline]

Set the execution ID for executing the tasks.

Parameters:

v	the execution ID.

void TaskManager::task_done	(	bool	success,
		const string &	errmsg
	)		[private]

This indicates we are badly out of sync. We got some callback we weren't expecting, basically. That this happens with the scenario below indicates the task-manager & task logic is busted somewhere. Reported by: Li Zhao 1. start rtrmgr from linux shell on the system; 2. manually start xorp_static_routes from linux shell. This static will hijack the xrl channels to rtrmgr; 3. use cli command "create protocol static" to start a second xorp_static_routes. 4. use cli command "delete protocol static" to stop static. both xorp_static_routes were terminated. depended process like fea, rib and policy were also terminated. rtrmgr crash.

With this check for empty task list, it at least doesn't crash, but the logic is still busted somewhere.

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The documentation for this class was generated from the following files:

• /home/greearb/git/xorp.ct.github/xorp/rtrmgr/task.hh
• /home/greearb/git/xorp.ct.github/xorp/rtrmgr/task.cc