Getting Started with QNX Neutrino - QNX Software Systems

List of Figures
A process as a container of threads. 16
Three threads in two different processes. 21
Two threads on the READY queue, one blocked, one running. 22
Scheduling roadmap. 23
Memory protection. 27
Serialized, single CPU. 49
Multithreaded, single CPU. 50
Four threads, four CPUs. 51
Eight threads, four CPUs. 52
System 1: Multiple operations, multiple processes. 54
System 2: Multiple operations, shared memory between processes. 55
System 3: Multiple operations, multiple threads. 55
One-to-one mutex and condvar associations. 68
Many-to-one mutex and condvar associations. 68
Thread flow when using thread pools. 71
Neutrino’s modular architecture. 81
State transitions of server. 82
State transitions of clients. 83
Clients accessing threads in a server. 87
Server/subserver model. 88
One master, multiple workers. 90
Relationship between a server channel and a client connection. 94
Relationship of client and server message-passing functions. 94
Message data flow. 95
Transferring less data than expected. 96
The fs-qnx4 message example, showing contiguous data view. 106
Transferring several chunks with MsgWrite(). 107
How the kernel sees a multipart message. 110
Converting contiguous data to separate buffers. 111
Confusion in a multithreaded server. 122
Message passing over a network. Notice that Qnet is divided into two sections.
125
Three threads at different priorities. 131
Blocked threads. 131
April 30, 2009 List of Figures ix