Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings. 2021 IEEE 27th Real-Time and Embedded Technology and Applications Symposium |
| Subtitle of host publication | RTAS 2021 |
| Pages | 400-412 |
| Number of pages | 13 |
| ISBN (electronic) | 9781665403863 |
| Publication status | Published - 2021 |
| Event | 27th IEEE Real-Time and Embedded Technology and Applications Symposium, RTAS 2021 - Duration: 18 May 2021 → 21 May 2021 |
Publication series
| Name | |
|---|---|
| ISSN (electronic) | 2642-7346 |
Abstract
After power-on, crash or reboot, the system-setup point is the first deadline that a safety-critical system has to reach. Up to this point, the application not only initializes its own state but it also creates all necessary system objects (e.g., threads, mutexes, alarms,...) in the real-time operating system. And, while the strict requirements for real-time analyses often result in a rather static set of created system objects, the commonly-provided real-time operating system (RTOS) interfaces force developers to execute these creations at run time, resulting in an unnecessarily prolonged boot process. With ARA, we present a static whole-system transformation that discovers pseudo-dynamic system-object creations (SOCs) which yield the same object on every boot. By modifying the application and by RTOS specialization, we transform these SOCs to semantically equivalent static SOCs, which moves their instantiation from the run time to the compile time. Thereby, we maintain the well-known RTOS interfaces for dynamic SOCs but let developers enjoy the benefits that static initialization provides. In our case studies with FreeRTOS applications, we could reduce the boot time by up to 43 percent at a moderate increase of flash usage.
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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Proceedings. 2021 IEEE 27th Real-Time and Embedded Technology and Applications Symposium: RTAS 2021. 2021. p. 400-412 9470475.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - ARA
T2 - 27th IEEE Real-Time and Embedded Technology and Applications Symposium, RTAS 2021
AU - Fiedler, Björn
AU - Lohmann, Daniel
AU - Dietrich, Christian Werner
AU - Lohmann, Daniel
N1 - Funding Information: We like to thank the anonymous reviewers for their feedback and fruitful comments. This work has been supported by the German Research Foundation (DFG) under the grant no. LO 1719/4-1. The source code and evaluation artifacts are available at:
PY - 2021
Y1 - 2021
N2 - After power-on, crash or reboot, the system-setup point is the first deadline that a safety-critical system has to reach. Up to this point, the application not only initializes its own state but it also creates all necessary system objects (e.g., threads, mutexes, alarms,...) in the real-time operating system. And, while the strict requirements for real-time analyses often result in a rather static set of created system objects, the commonly-provided real-time operating system (RTOS) interfaces force developers to execute these creations at run time, resulting in an unnecessarily prolonged boot process. With ARA, we present a static whole-system transformation that discovers pseudo-dynamic system-object creations (SOCs) which yield the same object on every boot. By modifying the application and by RTOS specialization, we transform these SOCs to semantically equivalent static SOCs, which moves their instantiation from the run time to the compile time. Thereby, we maintain the well-known RTOS interfaces for dynamic SOCs but let developers enjoy the benefits that static initialization provides. In our case studies with FreeRTOS applications, we could reduce the boot time by up to 43 percent at a moderate increase of flash usage.
AB - After power-on, crash or reboot, the system-setup point is the first deadline that a safety-critical system has to reach. Up to this point, the application not only initializes its own state but it also creates all necessary system objects (e.g., threads, mutexes, alarms,...) in the real-time operating system. And, while the strict requirements for real-time analyses often result in a rather static set of created system objects, the commonly-provided real-time operating system (RTOS) interfaces force developers to execute these creations at run time, resulting in an unnecessarily prolonged boot process. With ARA, we present a static whole-system transformation that discovers pseudo-dynamic system-object creations (SOCs) which yield the same object on every boot. By modifying the application and by RTOS specialization, we transform these SOCs to semantically equivalent static SOCs, which moves their instantiation from the run time to the compile time. Thereby, we maintain the well-known RTOS interfaces for dynamic SOCs but let developers enjoy the benefits that static initialization provides. In our case studies with FreeRTOS applications, we could reduce the boot time by up to 43 percent at a moderate increase of flash usage.
UR - http://www.scopus.com/inward/record.url?scp=85113759620&partnerID=8YFLogxK
U2 - 10.1109/RTAS52030.2021.00039
DO - 10.1109/RTAS52030.2021.00039
M3 - Conference contribution
SN - 978-1-6654-0386-3
SP - 400
EP - 412
BT - Proceedings. 2021 IEEE 27th Real-Time and Embedded Technology and Applications Symposium
Y2 - 18 May 2021 through 21 May 2021
ER -