xvi Preface
Table 0.1 Summary of design patterns
Category Pattern Name Where in the Book
ISR
ISR-Pattern-min Section 4.5.1
ISR-Pattern-server Section 4.5.2
Interrupt chaining Figure 4.7 in Section 4.5.3
Interrupt cascading Figure 4.9 in Section 4.5.4
Interrupt disabling Figure 4.11 in Section 4.5.5
Double buffering Figure 4.12 in Section 4.5.5
Honor first request Figure 12.17 in Section 12.3.2
Subclassing
Abstraction-occurrence Figure 6.25 in Section 6.3.4
General hierarchy Figure 6.27 in Section 6.3.4
Software architecture
Round-robin DAS Figure 12.10 in Section 12.2.2
Round robin with interrupts Figure 12.16 in Section 12.3.2
FIFO queuing Figure 12.20 in Section 12.4.1
Priority queuing Figure 12.21 in Section 12.4.2
Serial port design pattern Figure 14.5 in Section 14.2.2.1
Static task scheduler
Clock based Section 15.2
Frame based Section 15.3
Timing wheel Section 22.3
Semaphore/mutex
Rendezvous synchronization pattern Figure 18.8 in Section 18.3.1
Multi-instance resource protection Figure 18.19 in Section 18.4.1
Condition variable
Barrier synchronization pattern Figure 18.24 in Section 18.5.1
Producer-consumer pattern Figure 18.25 in Section 18.5.2
Read-write lock pattern Figure 18.30 in Section 18.5.3
Message queue
Unidirectional queuing pattern Figure 19.5 in Section 19.3.1
Acked-unidirectional queuing pattern Figure 19.6 in Section 19.3.2
Bidirectional queuing pattern Figure 19.7 in Section 19.3.3
Client-server queuing pattern Figure 19.10 in Section 19.3.4
Pipe
Unidirectional piping pattern Figure 20.3 in Section 20.3
Bidirectional piping pattern Figure 20.3 in Section 20.3
Deadlock avoidance Hierarchical messaging pattern Figure 21.8 in Section 21.7.3
DAS, detect-acknowledge-service; FIFO, first in first out; ISR, interrupt service routine.
book introduces many design patterns, which represent the best practices that can be reused in
a wide range of real-time embedded systems.
Second, Unied Modeling Language (UML) is a graphical language for specifying,
visualizing, constructing, and documenting software systems. UML is useful in a variety of
engineering problems, from single-process, embedded systems and stand-alone user
applications to concurrent, distributed systems. This text features UML 2.4, the latest UML
standard as of this writing. Throughout the book, UML diagrams are used for both system
designs and concept illustrations. In particular, the UML real-time prole is carefully
presented so that students can learn how to document their designs of real-time systems in a
professional way.
评论0