libcamera  v0.0.0
Supporting cameras in Linux since 2019
Public Member Functions | Static Public Member Functions | List of all members
libcamera::ProcessManager Class Reference

Manager of processes. More...

Public Member Functions

void registerProcess (Process *proc)
 Register process with process manager. More...
 
int writePipe () const
 Retrieve the Process manager's write pipe. More...
 
const struct sigaction & oldsa () const
 Retrive the old signal action data. More...
 

Static Public Member Functions

static ProcessManagerinstance ()
 Retrieve the Process manager instance. More...
 

Detailed Description

Manager of processes.

The ProcessManager singleton keeps track of all created Process instances, and manages the signal handling involved in terminating processes.

Member Function Documentation

◆ instance()

ProcessManager * libcamera::ProcessManager::instance ( )
static

Retrieve the Process manager instance.

The ProcessManager is a singleton and can't be constructed manually. This method shall instead be used to retrieve the single global instance of the manager.

Returns
The Process manager instance

◆ oldsa()

const struct sigaction & libcamera::ProcessManager::oldsa ( ) const

Retrive the old signal action data.

This method is meant only to be used by the static signal handler.

Returns
The old signal action data

◆ registerProcess()

void libcamera::ProcessManager::registerProcess ( Process proc)

Register process with process manager.

Parameters
[in]procProcess to register

This method registers the proc with the process manager. It shall be called by the parent process after successfully forking, in order to let the parent signal process termination.

◆ writePipe()

int libcamera::ProcessManager::writePipe ( ) const

Retrieve the Process manager's write pipe.

This method is meant only to be used by the static signal handler.

Returns
Pipe for writing

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