OProcess Class Reference

#include </home/clem/local/src/opie/noncore/unsupported/libopie/oprocess.h>

Collaboration diagram for OProcess:

[legend]List of all members.


Public Types
enum	Communication { NoCommunication = 0, Stdin = 1, Stdout = 2, Stderr = 4, AllOutput = 6, All = 7, NoRead }
enum	RunMode { DontCare, NotifyOnExit, Block }
Signals
void	processExited (OProcess *proc)
void	receivedStdout (OProcess proc, char buffer, int buflen)
void	receivedStdout (int fd, int &len)
void	receivedStderr (OProcess proc, char buffer, int buflen)
void	wroteStdin (OProcess *proc)
Public Member Functions
	OProcess (QObject parent=0, const char name=0)
	OProcess (const QString &arg0, QObject parent=0, const char name=0)
	OProcess (const QStringList &args, QObject parent=0, const char name=0)
virtual	~OProcess ()
bool	setExecutable (const QString &proc)
OProcess &	operator<< (const QString &arg)
OProcess &	operator<< (const char *arg)
OProcess &	operator<< (const QCString &arg)
OProcess &	operator<< (const QStringList &args)
void	clearArguments ()
virtual bool	start (RunMode runmode=NotifyOnExit, Communication comm=NoCommunication)
virtual bool	kill (int signo=SIGTERM)
bool	isRunning () const
pid_t	pid () const
void	suspend ()
void	resume ()
bool	normalExit () const
int	exitStatus () const
bool	writeStdin (const char *buffer, int buflen)
void	flushStdin ()
bool	closeStdin ()
bool	closeStdout ()
bool	closeStderr ()
const QValueList< QCString > &	args ()
void	setRunPrivileged (bool keepPrivileges)
bool	runPrivileged () const
void	setEnvironment (const QString &name, const QString &value)
void	setWorkingDirectory (const QString &dir)
void	setUseShell (bool useShell, const char *shell=0)
void	detach ()
Static Public Member Functions
static QString	quote (const QString &arg)
Protected Slots
void	slotChildOutput (int fdno)
void	slotChildError (int fdno)
void	slotSendData (int dummy)
Protected Member Functions
void	setupEnvironment ()
virtual int	setupCommunication (Communication comm)
virtual int	commSetupDoneP ()
virtual int	commSetupDoneC ()
virtual void	processHasExited (int state)
virtual void	commClose ()
int	childOutput (int fdno)
int	childError (int fdno)
Protected Attributes
QValueList< QCString >	arguments
RunMode	run_mode
bool	runs
pid_t	pid_
int	status
bool	keepPrivs
int	out [2]
int	in [2]
int	err [2]
QSocketNotifier *	innot
QSocketNotifier *	outnot
QSocketNotifier *	errnot
Communication	communication
const char *	input_data
int	input_sent
int	input_total
Private Member Functions
QCString	searchShell ()
bool	isExecutable (const QCString &filename)
	OProcess (const OProcess &)
OProcess &	operator= (const OProcess &)
void	init ()
Private Attributes
OProcessPrivate *	d
Friends
class	OProcessController

Detailed Description

Child process invocation, monitoring and control.

General usage and features

This class allows a KDE and OPIE application to start child processes without having to worry about UN*X signal handling issues and zombie process reaping.

See also:: KProcIO

Basically, this class distinguishes three different ways of running child processes:

OProcess::DontCare -- The child process is invoked and both the child process and the parent process continue concurrently.

Starting a DontCare child process means that the application is not interested in any notification to determine whether the child process has already exited or not.

OProcess::NotifyOnExit -- The child process is invoked and both the child and the parent process run concurrently.

When the child process exits, the OProcess instance corresponding to it emits the Qt signal processExited().

Since this signal is not emitted from within a UN*X signal handler, arbitrary function calls can be made.

Be aware: When the OProcess objects gets destructed, the child process will be killed if it is still running! This means in particular, that you cannot use a OProcess on the stack with OProcess::NotifyOnExit.

OProcess::Block -- The child process starts and the parent process is suspended until the child process exits. (Really not recommended for programs with a GUI.)

OProcess also provides several functions for determining the exit status and the pid of the child process it represents.

Furthermore it is possible to supply command-line arguments to the process in a clean fashion (no null -- terminated stringlists and such...)

A small usage example:

OProcess *proc = new OProcess;

proc << "my_executable";
proc << "These" << "are" << "the" << "command" << "line" << "args";
QApplication::connect(proc, SIGNAL(processExited(OProcess *)),
                      pointer_to_my_object, SLOT(my_objects_slot(OProcess *)));
proc->start();

This will start "my_executable" with the commandline arguments "These"...

When the child process exits, the respective Qt signal will be emitted.

Communication with the child process

OProcess supports communication with the child process through stdin/stdout/stderr.

The following functions are provided for getting data from the child process or sending data to the child's stdin (For more information, have a look at the documentation of each function):

bool writeStdin(char *buffer, int buflen);
-- Transmit data to the child process's stdin.

bool closeStdin();
-- Closes the child process's stdin (which causes it to see an feof(stdin)). Returns false if you try to close stdin for a process that has been started without a communication channel to stdin.

bool closeStdout();
-- Closes the child process's stdout. Returns false if you try to close stdout for a process that has been started without a communication channel to stdout.

bool closeStderr();
-- Closes the child process's stderr. Returns false if you try to close stderr for a process that has been started without a communication channel to stderr.

QT signals:

void receivedStdout(OProcess *proc, char *buffer, int buflen);
void receivedStderr(OProcess *proc, char *buffer, int buflen);
-- Indicates that new data has arrived from either the child process's stdout or stderr.

void wroteStdin(OProcess *proc);
-- Indicates that all data that has been sent to the child process by a prior call to writeStdin() has actually been transmitted to the client .

Author:: Christian Czezakte e9025461@student.tuwien.ac.at

Definition at line 147 of file oprocess.h.

Member Enumeration Documentation

enum OProcess::Communication

Modes in which the communication channel can be opened.
If communication for more than one channel is required, the values have to be or'ed together, for example to get communication with stdout as well as with stdin, you would specify Stdin | Stdout
If NoRead is specified in conjunction with Stdout, no data is actually read from Stdout but only the signal childOutput(int fd) is emitted.
Enumeration values:

NoCommunication

Stdin

Stdout

Stderr

AllOutput

All

NoRead

Definition at line 165 of file oprocess.h.

enum OProcess::RunMode

Run-modes for a child process.
Enumeration values:

DontCare The application does not receive notifications from the subprocess when it is finished or aborted.

NotifyOnExit The application is notified when the subprocess dies.

Block The application is suspended until the started process is finished.

Definition at line 172 of file oprocess.h.

Constructor & Destructor Documentation

OProcess::OProcess ( QObject * parent = 0,

const char * name = 0

)

Constructor
Definition at line 96 of file oprocess.cpp.
References init().

OProcess::OProcess ( const QString & arg0,

QObject * parent = 0,

const char * name = 0

)

Constructor
Definition at line 102 of file oprocess.cpp.
References init().

OProcess::OProcess ( const QStringList & args,

QObject * parent = 0,

const char * name = 0

)

Constructor
Definition at line 109 of file oprocess.cpp.
References init().

OProcess::~OProcess ( ) [virtual]

Destructor:
If the process is running when the destructor for this class is called, the child process is killed with a SIGKILL, but only if the run mode is not of type DontCare. Processes started as DontCare keep running anyway.
Definition at line 186 of file oprocess.cpp.
References closeStderr(), closeStdin(), closeStdout(), d, DontCare, kill(), OProcessController::removeOProcess(), run_mode, runs, and OProcessController::theOProcessController.

OProcess::OProcess ( const OProcess & ) [private]

Member Function Documentation

const QValueList<QCString>& OProcess::args ( ) [inline]

Lets you see what your arguments are for debugging.
Definition at line 398 of file oprocess.h.
References arguments.

int OProcess::childError ( int fdno ) [protected]

Called by "slotChildOutput" this function copies data arriving from the child process's stdout to the respective buffer and emits the signal "@ref receivedStderr"
Definition at line 647 of file oprocess.cpp.
References len, and receivedStderr().
Referenced by commClose(), Opie::Core::OProcess::commClose(), slotChildError(), and Opie::Core::OProcess::slotChildError().

int OProcess::childOutput ( int fdno ) [protected]

Called by "slotChildOutput" this function copies data arriving from the child process's stdout to the respective buffer and emits the signal "@ref receivedStderr".
Definition at line 623 of file oprocess.cpp.
References communication, len, NoRead, and receivedStdout().
Referenced by commClose(), Opie::Core::OProcess::commClose(), slotChildOutput(), and Opie::Core::OProcess::slotChildOutput().

void OProcess::clearArguments ( )

Clear a command line argument list that has been set by using the "operator<<".
Definition at line 260 of file oprocess.cpp.
References arguments, and QValueList< T >::clear().

bool OProcess::closeStderr ( )

This causes the stderr file descriptor of the child process to be closed.

Returns:
false if no communication to the process's stderr had been specified in the call to start().

Definition at line 550 of file oprocess.cpp.
References communication, err, errnot, and Stderr.
Referenced by detach(), Opie::Core::OProcess::detach(), slotChildError(), Opie::Core::OProcess::slotChildError(), ~OProcess(), and Opie::Core::OProcess::~OProcess().

bool OProcess::closeStdin ( )

This causes the stdin file descriptor of the child process to be closed indicating an "EOF" to the child.

Returns:
false if no communication to the process's stdin had been specified in the call to start().

Definition at line 520 of file oprocess.cpp.
References communication, in, innot, and Stdin.
Referenced by detach(), Opie::Core::OProcess::detach(), ~OProcess(), and Opie::Core::OProcess::~OProcess().

bool OProcess::closeStdout ( )

This causes the stdout file descriptor of the child process to be closed.

Returns:
false if no communication to the process's stdout had been specified in the call to start().

Definition at line 535 of file oprocess.cpp.
References communication, out, outnot, and Stdout.
Referenced by detach(), Opie::Core::OProcess::detach(), slotChildOutput(), Opie::Core::OProcess::slotChildOutput(), ~OProcess(), and Opie::Core::OProcess::~OProcess().

void OProcess::commClose ( ) [protected, virtual]

Should clean up the communication links to the child after it has exited. Should be called from "processHasExited".
Definition at line 773 of file oprocess.cpp.
References childError(), childOutput(), communication, err, errnot, in, innot, NoCommunication, out, outnot, runs, Stderr, Stdin, and Stdout.
Referenced by processHasExited(), Opie::Core::OProcess::processHasExited(), start(), and Opie::Core::OProcess::start().

int OProcess::commSetupDoneC ( ) [protected, virtual]

Called right after a (successful) fork, but before an "exec" on the child process' side. It usually just closes the unused communication ends of "in", "out" and "err" (like the writing end of the "in" communication channel.
Definition at line 730 of file oprocess.cpp.
References communication, err, in, out, Stderr, Stdin, and Stdout.
Referenced by start(), and Opie::Core::OProcess::start().

int OProcess::commSetupDoneP ( ) [protected, virtual]

Called right after a (successful) fork on the parent side. This function will usually do some communications cleanup, like closing the reading end of the "stdin" communication channel.
Furthermore, it must also create the QSocketNotifiers "innot", "outnot" and "errnot" and connect their Qt slots to the respective OProcess member functions.
For a more detailed explanation, it is best to have a look at the default implementation of "setupCommunication" in kprocess.cpp.
Definition at line 682 of file oprocess.cpp.
References Block, communication, err, errnot, in, innot, NoCommunication, NoRead, out, outnot, run_mode, slotChildError(), slotChildOutput(), slotSendData(), Stderr, Stdin, Stdout, and suspend().
Referenced by start(), and Opie::Core::OProcess::start().

void OProcess::detach ( )

Detaches OProcess from child process. All communication is closed. No exit notification is emitted any more for the child process. Deleting the OProcess will no longer kill the child process. Note that the current process remains the parent process of the child process.
Definition at line 209 of file oprocess.cpp.
References closeStderr(), closeStdin(), closeStdout(), pid_, OProcessController::removeOProcess(), runs, and OProcessController::theOProcessController.

int OProcess::exitStatus ( ) const

Returns the exit status of the process.
Please use OProcess::normalExit() to check whether the process has exited cleanly (i.e., OProcess::normalExit() returns true) before calling this function because if the process did not exit normally, it does not have a valid exit status.
Definition at line 464 of file oprocess.cpp.
References status.

void OProcess::flushStdin ( )

Definition at line 494 of file oprocess.cpp.
References d1, input_data, input_sent, input_total, and slotSendData().

void OProcess::init ( ) [private]

Definition at line 116 of file oprocess.cpp.
References OProcessController::addOProcess(), communication, d, err, errnot, in, innot, input_data, input_sent, input_total, keepPrivs, NoCommunication, NotifyOnExit, OProcessController, out, outnot, pid_, run_mode, runs, status, and OProcessController::theOProcessController.
Referenced by OProcess().

bool OProcess::isExecutable ( const QCString & filename ) [private]

Used by searchShell in order to find out whether the shell found is actually executable at all.
Definition at line 893 of file oprocess.cpp.
References S_ISDIR.
Referenced by searchShell(), and Opie::Core::OProcess::searchShell().

bool OProcess::isRunning ( ) const

Returns:
true if the process is (still) considered to be running

Definition at line 442 of file oprocess.cpp.
References runs.

bool OProcess::kill ( int signo = SIGTERM ) [virtual]

Stop the process (by sending it a signal).

Parameters:

signo The signal to send. The default is SIGTERM.

Returns:
true if the signal was delivered successfully.

Definition at line 430 of file oprocess.cpp.
References pid_.
Referenced by Opie::Core::OProcess::kill(), ~OProcess(), and Opie::Core::OProcess::~OProcess().

bool OProcess::normalExit ( ) const

Returns:
true if the process has already finished and has exited "voluntarily", ie: it has not been killed by a signal.
Note that you should check OProcess::exitStatus() to determine whether the process completed its task successful or not.
Definition at line 456 of file oprocess.cpp.
References pid_, runs, and status.

OProcess & OProcess::operator<< ( const QStringList & args )

Sets the executable and the command line argument list for this process, in a single method call, or add a list of arguments.
Definition at line 235 of file oprocess.cpp.
References QValueList< T >::append(), arguments, and QFile::encodeName().

OProcess & OProcess::operator<< ( const QCString & arg )

Similar to previous method, takes a QCString, supposed to be in locale 8 bit already.
Definition at line 243 of file oprocess.cpp.
References operator<<().

OProcess & OProcess::operator<< ( const char * arg )

Similar to previous method, takes a char *, supposed to be in locale 8 bit already.
Definition at line 248 of file oprocess.cpp.
References QValueList< T >::append(), and arguments.

OProcess & OProcess::operator<< ( const QString & arg )

Sets the executable and the command line argument list for this process.
For example, doing an "ls -l /usr/local/bin" can be achieved by:
OProcess p; ... p << "ls" << "-l" << "/usr/local/bin"

Definition at line 254 of file oprocess.cpp.
References QValueList< T >::append(), arguments, and QFile::encodeName().
Referenced by operator<<(), and Opie::Core::OProcess::operator<<().

OProcess& OProcess::operator= ( const OProcess & ) [private]

pid_t OProcess::pid ( ) const

Returns the process id of the process.
If it is called after the process has exited, it returns the process id of the last child process that was created by this instance of OProcess.
Calling it before any child process has been started by this OProcess instance causes pid() to return 0.
Definition at line 449 of file oprocess.cpp.
References pid_.
Referenced by OProcessController::slotDoHousekeeping().

void OProcess::processExited ( OProcess * proc ) [signal]

Emitted after the process has terminated when the process was run in the NotifyOnExit (==default option to start()) or the Block mode.
Referenced by processHasExited(), Opie::Core::OProcess::processHasExited(), start(), and Opie::Core::OProcess::start().

void OProcess::processHasExited ( int state ) [protected, virtual]

Immediately called after a process has exited. This function normally calls commClose to close all open communication channels to this process and emits the "processExited" signal (if the process was not running in the "DontCare" mode).
Definition at line 604 of file oprocess.cpp.
References commClose(), DontCare, processExited(), run_mode, runs, and status.
Referenced by OProcessController::slotDoHousekeeping().

QString OProcess::quote ( const QString & arg ) [static]

This function can be used to quote an argument string such that the shell processes it properly. This is e. g. necessary for user-provided file names which may contain spaces or quotes. It also prevents expansion of wild cards and environment variables.
Definition at line 872 of file oprocess.cpp.
References QString::append(), QString::fromLatin1(), QString::prepend(), and QString::replace().

void OProcess::receivedStderr ( OProcess * proc,

char * buffer,

int buflen

) [signal]

Emitted, when output from the child process has been received on stderr. To actually get these signals, the respective communication link (stdout/stderr) has to be turned on in start().

Parameters:

buffer The data received.

buflen The number of bytes that are available.

You should copy the information contained in buffer to your private data structures before returning from this slot.
Referenced by childError(), and Opie::Core::OProcess::childError().

void OProcess::receivedStdout ( int fd,

int & len

) [signal]

Emitted when output from the child process has been received on stdout.
To actually get these signals, the respective communications link (stdout/stderr) has to be turned on in start() and the NoRead flag should have been passed.
You will need to explicitly call resume() after your call to start() to begin processing data from the child process's stdout. This is to ensure that this signal is not emitted when no one is connected to it, otherwise this signal will not be emitted.
The data still has to be read from file descriptor fd.

void OProcess::receivedStdout ( OProcess * proc,

char * buffer,

int buflen

) [signal]

Emitted, when output from the child process has been received on stdout.
To actually get these signals, the respective communication link (stdout/stderr) has to be turned on in start().

Parameters:

buffer The data received.

buflen The number of bytes that are available.

You should copy the information contained in buffer to your private data structures before returning from this slot.
Referenced by childOutput(), and Opie::Core::OProcess::childOutput().

void OProcess::resume ( )

Resume processing of data from stdout of the child process.
Definition at line 514 of file oprocess.cpp.
References communication, outnot, and Stdout.

bool OProcess::runPrivileged ( ) const

Returns whether the started process will drop any setuid/segid privileges or whether it will keep them
Definition at line 180 of file oprocess.cpp.
References keepPrivs.
Referenced by start(), and Opie::Core::OProcess::start().

QCString OProcess::searchShell ( ) [private]

Searches for a valid shell. Here is the algorithm used for finding an executable shell:

Try the executable pointed to by the "SHELL" environment variable with white spaces stripped off

If your process runs with uid != euid or gid != egid, a shell not listed in /etc/shells will not used.

If no valid shell could be found, "/bin/sh" is used as a last resort.

Definition at line 882 of file oprocess.cpp.
References isExecutable().
Referenced by setUseShell(), and Opie::Core::OProcess::setUseShell().

void OProcess::setEnvironment ( const QString & name,

const QString & value

)

Modifies the environment of the process to be started. This function must be called before starting the process.
Definition at line 144 of file oprocess.cpp.
References d, OProcessPrivate::env, and QMap< Key, T >::insert().

bool OProcess::setExecutable ( const QString & proc )

Deprecated:
The use of this function is now deprecated. -- Please use the "operator<<" instead of "setExecutable".
Sets the executable to be started with this OProcess object. Returns false if the process is currently running (in that case the executable remains unchanged.)

See also:
operator<<

Definition at line 222 of file oprocess.cpp.
References arguments, QValueList< T >::begin(), QFile::encodeName(), QValueList< T >::isEmpty(), QString::isEmpty(), QValueList< T >::prepend(), QValueList< T >::remove(), and runs.

void OProcess::setRunPrivileged ( bool keepPrivileges )

Controls whether the started process should drop any setuid/segid privileges or whether it should keep them
The default is false : drop privileges
Definition at line 174 of file oprocess.cpp.
References keepPrivs.

int OProcess::setupCommunication ( Communication comm ) [protected, virtual]

This function is called from "OProcess::start" right before a "fork" takes place. According to the "comm" parameter this function has to initialize the "in", "out" and "err" data member of OProcess.
This function should return 0 if setting the needed communication channels was successful.
The default implementation is to create UNIX STREAM sockets for the communication, but you could overload this function and establish a TCP/IP communication for network communication, for example.
Definition at line 661 of file oprocess.cpp.
References communication, err, in, out, Stderr, Stdin, and Stdout.
Referenced by start(), and Opie::Core::OProcess::start().

void OProcess::setupEnvironment ( ) [protected]

Sets up the environment according to the data passed via setEnvironment(...)
Definition at line 160 of file oprocess.cpp.
References QMap< Key, T >::begin(), d, QFile::encodeName(), QMap< Key, T >::end(), OProcessPrivate::env, QString::isEmpty(), and OProcessPrivate::wd.
Referenced by start(), and Opie::Core::OProcess::start().

void OProcess::setUseShell ( bool useShell,

const char * shell = 0

)

Specify whether to start the command via a shell or directly. The default is to start the command directly. If useShell is true shell will be used as shell, or if shell is empty, the standard shell is used. quote A flag indicating whether to quote the arguments.
When using a shell, the caller should make sure that all filenames etc. are properly quoted when passed as argument.
See also:
quote()

Definition at line 862 of file oprocess.cpp.
References d, QCString::isEmpty(), searchShell(), OProcessPrivate::shell, and OProcessPrivate::useShell.

void OProcess::setWorkingDirectory ( const QString & dir )

Changes the current working directory (CWD) of the process to be started. This function must be called before starting the process.
Definition at line 152 of file oprocess.cpp.
References d, and OProcessPrivate::wd.

void OProcess::slotChildError ( int fdno ) [protected, slot]

This slot gets activated when data from the child's stderr arrives. It usually calls "childError"
Definition at line 579 of file oprocess.cpp.
References childError(), and closeStderr().
Referenced by commSetupDoneP(), and Opie::Core::OProcess::commSetupDoneP().

void OProcess::slotChildOutput ( int fdno ) [protected, slot]

This slot gets activated when data from the child's stdout arrives. It usually calls "childOutput"
Definition at line 572 of file oprocess.cpp.
References childOutput(), and closeStdout().
Referenced by commSetupDoneP(), and Opie::Core::OProcess::commSetupDoneP().

void OProcess::slotSendData ( int dummy ) [protected, slot]

Called when another bulk of data can be sent to the child's stdin. If there is no more data to be sent to stdin currently available, this function must disable the QSocketNotifier "innot".
Definition at line 586 of file oprocess.cpp.
References in, innot, input_data, input_sent, input_total, write(), and wroteStdin().
Referenced by commSetupDoneP(), Opie::Core::OProcess::commSetupDoneP(), flushStdin(), Opie::Core::OProcess::flushStdin(), writeStdin(), and Opie::Core::OProcess::writeStdin().

bool OProcess::start ( RunMode runmode = NotifyOnExit,

Communication comm = NoCommunication

) [virtual]

Starts the process. For a detailed description of the various run modes and communication semantics, have a look at the general description of the OProcess class.
The following problems could cause this function to return false:

The process is already running.

The command line argument list is empty.

The starting of the process failed (could not fork).

The executable was not found.

Parameters:

comm Specifies which communication links should be established to the child process (stdin/stdout/stderr). By default, no communication takes place and the respective communication signals will never get emitted.

Returns:
true on success, false on error (see above for error conditions)

Definition at line 265 of file oprocess.cpp.
References arguments, Block, commClose(), commSetupDoneC(), commSetupDoneP(), QValueList< T >::count(), d, DontCare, FALSE, i, input_data, QCString::isEmpty(), pid_, processExited(), qWarning(), run_mode, runPrivileged(), runs, setupCommunication(), setupEnvironment(), OProcessPrivate::shell, status, OProcessController::theOProcessController, OProcessPrivate::useShell, and write().

void OProcess::suspend ( )

Suspend processing of data from stdout of the child process.
Definition at line 508 of file oprocess.cpp.
References communication, outnot, and Stdout.
Referenced by commSetupDoneP(), and Opie::Core::OProcess::commSetupDoneP().

bool OProcess::writeStdin ( const char * buffer,

int buflen

)

Transmit data to the child process's stdin.
OProcess::writeStdin may return false in the following cases:

The process is not currently running.

Communication to stdin has not been requested in the start() call.

Transmission of data to the child process by a previous call to writeStdin() is still in progress.

Please note that the data is sent to the client asynchronously, so when this function returns, the data might not have been processed by the child process.
If all the data has been sent to the client, the signal wroteStdin() will be emitted.
Please note that you must not free "buffer" or call writeStdin() again until either a wroteStdin() signal indicates that the data has been sent or a processHasExited() signal shows that the child process is no longer alive...
Definition at line 472 of file oprocess.cpp.
References communication, innot, input_data, input_sent, input_total, runs, slotSendData(), and Stdin.

void OProcess::wroteStdin ( OProcess * proc ) [signal]

Emitted after all the data that has been specified by a prior call to writeStdin() has actually been written to the child process.
Referenced by slotSendData(), and Opie::Core::OProcess::slotSendData().

Friends And Related Function Documentation

friend class OProcessController [friend]

OProcessController is a friend of OProcess because it has to have access to various data members.
Definition at line 710 of file oprocess.h.
Referenced by init(), and Opie::Core::OProcess::init().