Getting Started with QNX Neutrino - QNX Software Systems

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Index © 2009, QNX Software Systems GmbH & Co. KG. example 72 functions 70 message passing 86 POOL_FLAG_EXIT_SELF 72 POOL_FLAG_USE_SELF 72 POSIX 331, 334 postmortem stack analysis 40 preemption 20 priorities 17 Processes 15 processes 55 pthread_join() 163, 164 readers/writer locks 57 readied by timer 165 readying via message pass 82 resumption 20 RR scheduling 21 scheduling algorithm 20 scheduling algorithms 21 semaphore 17 single threads 15 SMP 43 and interrupts 53 concurrency 53 determining how many threads to create 44 timing diagram 49, 50, 52 soaker 52 stack 40 states receive-blocked 82 receive-blocked diagram 82 reply-blocked 83 reply-blocked diagram 82 send-blocked 83 send-blocked diagram 82 STATE_READY 82 STATE_RECV 82 STATE_RECV diagram 82 STATE_REPLY 83 STATE_REPLY diagram 82 STATE_SEND 83 STATE_SEND diagram 82 synchronizing to termination of 45 utilizing SMP 51 where to use 42, 54 thread_pool_attr_t 70 thread_pool_control() 70 thread_pool_create() 70, 72, 73 example 72 thread_pool_destroy() 70 thread_pool_limits() 70 thread_pool_start() 70, 72, 73 example 72 thread_pool() family 86 thread pool message passing 117 ThreadCtl() 176 ticksize 22 time adjusting forwards or backwards 158 adjusting gradually 158 discontinuities in flow 158 retarding flow of 158 synchronizing current time of day 158 time() 148 timebase 158 timeout 163 and kernel states 163 arming 163, 165 clearing 163 kernel timeouts 156 pthread_join() 164 server-driven 156 server-maintained 149 example 149, 151–154 triggering 163 unblocking client 119 withpthread_join() 163 timeout notification 142 pulse 145 signal 146 timer 147 10 millisecond 138 absolute 141, 147, 165 defined 327 example 148 accuracy 139, 140 adjusting base timing resolution 158 asynchronous nature 141 370 Index April 30, 2009
© 2009, QNX Software Systems GmbH & Co. KG. Index behavior if expired 140 changing resolution 140 CLOCK_MONOTONIC 147 CLOCK_REALTIME 146 CLOCK_SOFTTIME 146 ClockPeriod() 158 converting time formats 148 creating 146 creating a thread 143, 144 creating threads on expiry 142 creating threads on trigger 157 delivering a pulse 143 delivering a signal 143 diagram showing big picture 139 drift 139 flags 147 getting and setting the realtime clock 157 hardware divider 139 hardware divisor 139 implementation 138, 142, 149, 165 improving accuracy 158 inactivity shutdown 156 jitter 140, 141 diagram 140 kernel timeouts 165 limits on base timing resolution 159 one-shot 141, 148 example 148 periodic 141, 148 and server maintenance 156 and servers 149 example 149 polling 156 preemption 140 pulse versus signal 146 pulses 116, 142, 143, 149, 151–154 putting a thread on hold 138 readying a thread 140, 165 relative 141, 147, 165 defined 332 example 148, 149, 151–154 repeating defined 332 resolving 140 scheduling an event in the future 141 sending a signal 144 specifying code number 144 specifying signal number 144 setting type 147 SIGALRM 157 SIGEV_THREAD 143 signals 142, 157 specifying a signal 157 SIGUSR1 157 specifying sub-second values 148 starting 147 struct itimerspec 147, 148 struct sigevent 142 struct timespec 147, 148 timeout notification 142 by pulse 145 by signal 146 TIMER_ABSTIME 147 timer_create() 146 timer_settime() 147 types 141, 147, 148 usage examples 149 using 146 using pulses with servers 145 warm-up timer 156 TIMER_ABSTIME 147 timer_create() 146, 147, 152 example 152 flags argument 147 signal example 157 timer_settime() 147, 149, 152 andTIMER_ABSTIME 147 example 152 TimerTimeout() 100, 119, 163–165, 289 andCLOCK_REALTIME 163 example 163–165 specifying multiple kernel states 165 timeslice 22 timestamps 159 timing busy wait 138 fine grained 138 high accuracy 159 hogging CPU 138 using ClockCycles() 159 tips broadcast versus signal 65 April 30, 2009 Index 371
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QNX Neutrino RTOS Getting Started w
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Contents About This Guide xi What y
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© 2009, QNX Software Systems GmbH
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List of Figures A process as a cont
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About This Guide April 30, 2009 Abo
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Typographical conventions © 2009,
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Foreword to the First Edition by Pe
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Chapter 2 Message Passing In this c
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Message passing and client/server
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Message passing and client/server
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Multiple threads © 2009, QNX Softw
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Multiple threads © 2009, QNX Softw
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Using message passing © 2009, QNX
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Pulses © 2009, QNX Software System
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Message passing over a network © 2
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Priority inheritance © 2009, QNX S
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Priority inheritance © 2009, QNX S
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Chapter 3 Clocks, Timers, and Getti
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Clocks and timers © 2009, QNX Soft
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Using timers © 2009, QNX Software
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Advanced topics © 2009, QNX Softwa
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Chapter 4 Interrupts In this chapte
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Neutrino and interrupts © 2009, QN
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Writing interrupt handlers © 2009,
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TIME TIME Writing interrupt handler
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Summary © 2009, QNX Software Syste
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Appendix B Calling 911 In this appe
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Seeking professional help © 2009,
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Seeking professional help © 2009,
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Appendix C Sample Programs In this
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atoz.c © 2009, QNX Software System
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atoz.c © 2009, QNX Software System
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time1.c © 2009, QNX Software Syste
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Getting Started with QNX Neutrino - QNX Software Systems

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