CPCD::Process Class Reference

Manages a process. More...

#include <CPCD.hpp>

Collaboration diagram for CPCD::Process:

Public Member Functions
	Process (const Properties &props, class CPCD *cpcd)
	Constructs and empty Process.
void	monitor ()
	Monitors the process.
bool	isRunning ()
	Checks if the process is running or not.
int	start ()
	Starts the process.
void	stop ()
	Stops the process.
int	readPid ()
	Reads the pid from stable storage.
int	writePid (int pid)
	Writes the pid from stable storage.
void	print (FILE *)
	Prints a textual description of the process on a file.

Public Attributes
int	m_id
BaseString	m_name
	The name shown to the user.
BaseString	m_group
	Used to group a number of processes.
BaseString	m_env
	Environment variables.
BaseString	m_path
	Path to the binary to run.
BaseString	m_args
	Arguments to the process.
BaseString	m_type
	Type of process.
ProcessType	m_processType
BaseString	m_cwd
	Working directory.
BaseString	m_owner
	Owner of the process.
BaseString	m_runas
BaseString	m_stdin
	redirection for stdin
BaseString	m_stdout
	redirection for stdout
BaseString	m_stderr
	redirection for stderr
enum ProcessStatus	m_status
	Status of the process.
BaseString	m_ulimit
	ulimits for process Format c:unlimited d:0 ...
BaseString	m_shutdown_options
	shutdown options

Detailed Description

Manages a process.

Definition at line 106 of file CPCD.hpp.

Member Function Documentation

bool CPCD::Process::isRunning

(

)

Checks if the process is running or not.

Returns

• true if the process is running,
• false if the process is not running

Definition at line 119 of file Process.cpp.

void CPCD::Process::monitor

(

)

Monitors the process.

The process is started or stopped as needed.

Definition at line 97 of file Process.cpp.

int CPCD::Process::readPid

(

)

Reads the pid from stable storage.

Returns

The pid number

Definition at line 170 of file Process.cpp.

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int CPCD::Process::start

(

)

Starts the process.

Simple fork don't ignore child

PERMANENT

Definition at line 550 of file Process.cpp.

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int CPCD::Process::writePid

(

int

pid

)

Writes the pid from stable storage.

Returns

• 0 if successful
• -1 and sets errno if an error occured

Definition at line 215 of file Process.cpp.

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Member Data Documentation

BaseString CPCD::Process::m_args

Arguments to the process.

Note

• This includes argv[0].
• If no argv[0] is given, argv[0] will be set to m_path.

Definition at line 191 of file CPCD.hpp.

BaseString CPCD::Process::m_cwd

Working directory.

Working directory the process will start in.

Definition at line 206 of file CPCD.hpp.

BaseString CPCD::Process::m_env

Environment variables.

Environmentvariables to add for the process.

Note

• The environment cpcd started with is preserved
• There is no way to delete variables

Definition at line 180 of file CPCD.hpp.

int CPCD::Process::m_id

Id number of the Process.

Note

This is not the same as a pid. This number is used in the protocol, and will not be changed if a processes is restarted.

Definition at line 164 of file CPCD.hpp.

BaseString CPCD::Process::m_owner

Owner of the process.

Note

This will not affect the process' uid or gid; it is only used for managemental purposes.

See Also

m_runas

Definition at line 215 of file CPCD.hpp.

BaseString CPCD::Process::m_runas

Run as

Note

This affects uid

See Also

m_owner

Definition at line 222 of file CPCD.hpp.

BaseString CPCD::Process::m_type

Type of process.

Either set to "interactive" or "permanent".

Definition at line 198 of file CPCD.hpp.

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

• storage/ndb/src/cw/cpcd/CPCD.hpp
• storage/ndb/src/cw/cpcd/Process.cpp