Glossary#
- Launch Manager#
Component to start and stop processes on a POSIX like operating system.
- Health Monitor#
Provides process local monitoring functionalities such as deadline monitoring and logical program flow monitoring.
- Control Interface#
Interface to control the lifecycle of the system, e.g. to start and stop processes.
- Alive Interface#
Interface to monitor the aliveness of a process.
- Sandbox#
A sandbox is a set of configurations, which are applied to a process when it is started. It can include environment variables, secpol policies, cgroup configurations, user and group IDs etc.
- Health Monitor Interface#
Interface to monitor the health of a process, e.g. to check if a process is alive or if it is running as expected.
- Alive Monitoring#
Checks if an application reports an alive state in a certain period.
- Deadline Monitoring#
Monitor to detect if a state was reached within a specified time related to another event.
- Logical Programflow Monitoring#
Monitor to detect if certain states were reached in a defined sequence and time interval.
- Run State#
An Run State defines a set of components, which are in status running and are supervised by the software platform. If the health management system detects abnormal situation it can change the Run State.
- Lifecycle Component#
Node of the dependency tree.
- Process#
Instantiation of an Executable programs running on the system that are managed by the Launch Manager.
- UID#
User Identifier - a unique number assigned to each user on a Unix-like operating system.
- GID#
Group Identifier - a unique number assigned to each group on a Unix-like operating system.
- Polling Interval#
The time interval between successive checks of a condition or status.
- Working Directory#
The current directory from which a process is executed, also known as CWD (Current Working Directory).
- File Descriptor#
A handle used by a process to access files or other input/output resources.
- Procmgr#
Process Manager - a QNX system component that manages process creation and execution.
- ASLR#
Address Space Layout Randomization - a security technique that randomizes the memory layout of processes.
- Recovery Action#
Actions taken by the Launch Manager when a process fails or terminates abnormally.
- Liveliness#
The state indicating that a process is active and responding as expected.
- Watchdog#
A monitoring mechanism that detects system failures and can trigger recovery actions.
- Interval#
A period of time between events or measurements.
- QNX#
A real-time operating system commonly used in embedded systems.
- DSS#
Device Safe State - a safe operational state that a system can enter during failures.
- DAG#
Directed Acyclic Graph - a data structure used to represent dependencies between processes.
- SWC#
Software Components - modular software units that can be independently managed.
- Run target#
A named collection of processes and their dependencies that can be launched, stopped, or switched as a group to achieve a specific operational mode or configuration.
- Operating System#
The system software that manages computer hardware and software resources and provides common services for computer programs.