Search Results for "preemptive"
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Showing 43 open source projects for "preemptive"
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SerenityOS
The Serenity Operating System
SerenityOS is an open source Unix-like operating system project with its own custom kernel, graphical user interface, system libraries, and userland tools. It combines a nostalgic “90s UI aesthetic” with modern system capabilities: a preemptive, multi-threaded kernel, own browsers, network stack, file systems, IPC, security features, and a suite of graphical / developer applications. The project is both a hobbyist OS and a polished engineering sandbox. -
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StateOS
Free real-time operating system (RTOS) for microcontrollers
StateOS is a compact, open-source real-time operating system designed for embedded systems and written in ANSI C. It supports cooperative and preemptive multitasking, making it ideal for running multiple real-time tasks on microcontrollers. StateOS emphasizes clarity and ease of integration with existing projects and provides a full set of synchronization primitives, timers, and message-passing tools. It's widely used in industrial and academic settings for prototyping and low-level firmware development. -
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Tock OS
A secure embedded operating system for microcontrollers
...Written in Rust, it uses a novel kernel architecture where the OS runs a minimal trusted core and all userland code, including device drivers, is sandboxed and isolated. Tock is ideal for IoT devices, wearables, and embedded research projects where reliability and safety are critical. Its capability-based security model and preemptive multitasking allow developers to safely run multiple applications on constrained devices with confidence in memory and fault isolation. -
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ANTIRTOS
Function pointers queues classes library for Arduino
...It is designed to be simple, portable, and efficient, making it ideal for resource-constrained environments such as IoT devices, robotics, and educational hardware projects. ANTIRTOS features a basic scheduler, support for cooperative and preemptive multitasking, and offers portability across different CPU architectures with minimal changes. Its simplicity and clarity make it a great starting point for learning real-time systems. -
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Task Scheduler
Cooperative multitasking for Arduino, ESPx, STM32, nRF and more
Cooperative multitasking for Arduino, ESPx, STM32 and other microcontrollers. A lightweight implementation of cooperative multitasking (task scheduling). An easier alternative to preemptive programming and frameworks like FreeRTOS. You mostly do not need to worry about pitfalls of concurrent processing (races, deadlocks, livelocks, resource sharing, etc.). The fact of cooperative processing takes care of such issues by design. -
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QP Real-Time Event Frameworks & Tools
Real-Time Event Frameworks based on active objects & state machines
...The QP RTEFs can run on bare-metal microcontrollers, replacing a traditional RTOS. The frameworks contain a selection of built-in real-time kernels (RTOS kernels), such as the cooperative QV kernel, the preemptive non-blocking QK kernel, and the unique preemptive, dual-mode (blocking/non-blocking) QXK kernel. Native QP ports and ready-to-use examples are provided for ARM Cortex-M (M0/M0+/M3/M4/M7/M33/...) as well as other CPUs. The QP RTEFs can also work with many traditional RTOSes and General-Purpose OSes, such as Linux and Windows. -
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Ultra Performance Tuning
Debian-based distribution for deterministic, RT and low-latency works
Ultra Performance Tuning is a Debian-based Linux distribution for deterministic, real-time (Real-Time) and low-latency workloads. At the core of the distribution is a fully preemptive PREEMPT_RT patched kernel, ensuring strict microsecond-level scheduling determinism. By employing CPU scheduler tuning, hardware interrupt (IRQ) affinity steering, and optimized virtual memory management parameters, Ultra Performance Tuning minimizes system and input latencies. The distribution features a lightweight, custom-tailored XFCE4 desktop environment that reduces system overhead. ... -
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QP/C++ Real-Time Embedded Framework
Mirror of the QP/C++ real-time embedded framewrok GitHub repo
QP/C++ real-time embedded framework/RTOS for embedded systems based on active objects (actors) and hierarchical state machines. -
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tech01
Multitasking ARMv7-R and ARMv7-A (Cortex-R, Cortex-A)
Goal: multitasking kernel from scratch Target board: TI LAUNCHXL2-RM46 -
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CTREE Graphic Tree Generator for C
An analysis tool showing the structure of a C program
...CTREE is is released by Cleveland Engineering Design, LLC - developer of the CoRTOS cooperative RTOS https://sourceforge.net/projects/cortos-simple/ and PRTOS pre-emptive RTOS https://sourceforge.net/projects/prtos-preemptive-rtos/ V 1.01 - fixed bug that could cause lock-ups or garbage output with some coding styles. -
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IntrOS
Free cooperative operating system designed for microcontrollers
Free, simple and tiny cooperative operating system (OS) designed for deeply embedded applications. Target: ARM Cortex-M, STM8, AVR8. It was inspired by the concept of a state machine. Procedure executed by the task (task state) doesn't have to be noreturn-type. It will be executed into an infinite loop. There's a dedicated function for immediate change the task state. -
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StateOS
Free real-time operating system designed for microcontrollers
Free, extremely simple, amazingly tiny and very fast real-time operating system (RTOS) designed for deeply embedded applications. Target: ARM Cortex-M, STM8. It was inspired by the concept of a state machine. Procedure executed by the task (task state) doesn't have to be noreturn-type. It will be executed into an infinite loop. There's a dedicated function for immediate change the task state. -
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Pharos
RTOS for Secure, Safe and Real-Time Systems
Pharos is a free open-source RTOS for secure, safe and real-time systems with the following characteristics: - Memory and enhanced time partitioning (TSP) - Native support for sporadic, periodic and aperiodic threads - Fixed-priority preemptive scheduler - Execution time protection (threads are prevented from executing for more time than they are configured to) - Small size (full image has ~100 to 300KiB text, ~30KiB data) - Hard real-time determinism - Fast critical sections - Prioritized nested interrupts - inter-partition communication with filters to protect unwanted access - Multicore support (RMP) - Supports ARM9, Cortex-A/R/M and Aarch64, RISC-V64 (64 bits) - The complete TestSuite (see below information) is run successfully for each platform in each release - Tested: more than 170 KLOC of requirement-based tests, executed for each board at each release - Up-to-date User Manual also available See our wiki page for more information. -
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lilith
x86-64 os made in crystal
A POSIX-like x86-64 kernel and userspace written in Crystal. A CPU with x64 support is required to run the OS. The Makefile provides a script that will run QEMU on the kernel. To run with storage, an MBR-formatted hard drive image with a FAT16 partition must be provided in the running directory with the name drive.img. The kernel will automatically boot the main.bin executable on the hard drive, or panic if it can't be loaded. -
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fast single-privilege single-address-space preemptive-multithreading persistent data-centric secure multiuser operating system with safe-language and reconfigurable graphical interface
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The Femto OS is a very concise portable preemptive operating system for embedded devices with minimal ram and flash, up to say 16K flash, 1K ram. The main target is the AVR architecture, such as the ATtiny861/461/261 series.
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haikuVM
A Java VM for ARDUINO and other micros using the leJOS runtime.
HaikuVM has been started for hobbyists who develop applications for ARDUINO to open the world of JAVA and leJOS. Yes, you can program an ARDUINO with JAVA! HaikuVM is so small that it even runs on an atmega8 (and the ASURO robot). And yes, you can program an ASURO robot with JAVA! And since version 1.4.0 the RCX lego brick. -
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PRTOS Preemptive RTOS for embedded aps
PRTOS is a simple, compact preemptive RTOS for embedded systems
PRTOS is an open-source preemptive real time operating system kernel for embedded applications. It presently supports the AVR and MSP430 architectures. The advantages of PRTOS are: It has the smallest footprint of any true preemptive system: 1.9kB for basic scheduling and task control, 5.1kB with all the features below (AVR '328 / gcc -Os); Only 950 lines of code implement all of the RTOS features (SLOC-L); The system is well documented with a comprehensive manual, well-commented source code, and a test suite demonstrating the features; The system is proven - it has been in use since 1982 with applications in in-vitro medical equipment, process control instrumentation and industrial machinery; PRTOS is released by Cleveland Engineering Design, LLC - developer of the CoRTOS cooperative RTOS https://sourceforge.net/projects/cortos-simple/ and the CTREE analysis tool https://sourceforge.net/projects/ctree-graphic-tree-generator/ Commercial licensing is available -
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CoRTOS Simple Cooperative Embedded RTOS
A truly simple cooperative RTOS for bare-metal embedded applications
...The intended audience includes: • Those needing a small footprint RTOS; • Students learning about real time systems; • Makers wanting to program "close to the metal." CoRTOS is released by Cleveland Engineering Design, LLC - developer of PRTOS pre-emptive RTOS https://sourceforge.net/projects/prtos-preemptive-rtos/ and the CTREE analysis tool https://sourceforge.net/projects/ctree-graphic-tree-generator/ -
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FactoryController
Floor-level factory/shop automatization control software
Floor-level factory/shop automatization control software. MODBUS realtime network & devices controller. Hi-level task-centric parallel execution scenaries. MRP/ERP integration. -
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Fiwix
A UNIX-like kernel for the i386 architecture
FiwixOS 3 is a Fiwix distribution, an operating system made from a software collection that is based upon the Fiwix kernel. It basically comprises a Fiwix kernel, GNU tools, libraries and additional software. All the included software is free and open-source software made available both as compiled binaries and in source code form, which allows modifications to the original software. FiwixOS 3 uses the Newlib v3.1.0 as its C standard library, and the Ext2 as its primary file... -
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Aquila OS
AquilaOS: UNIX-like Operating System
Aquila is a minimalist operating system kernel written in C++ from scratch, aiming to offer a clean and understandable implementation of low-level OS concepts. Designed for x86_64 systems, Aquila includes its own bootloader and supports protected mode operations. It features a modular architecture with components for memory management, interrupts, and basic task scheduling. As a learning tool or hobby OS project, Aquila focuses on clarity, with an emphasis on educational documentation and... -
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TOS
An operating system for tenputer
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"µOS++" (micro OS plus plus) is an open source, royalty-free, real-time operating system intended for embedded systems built around ARM Cortex M or AVR devices. It is based on a preemptive scheduler written in C++ (more info in the Wiki).
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Nano OS is a RTOS for Atmel AVR controllers. It provides: -preemptive realtime multitasking incl. priorities, -binary semaphores, -message queues, -array-based memory management , -functions for taskcontrol, -watchdog, -system management functions
