@c @c COPYRIGHT (c) 1988-1999. @c On-Line Applications Research Corporation (OAR). @c All rights reserved. @c @c $Id$ @c @include ../../common/timemac.texi @tex \global\advance \smallskipamount by -4pt @end tex @chapter BSP_FOR_TIMES Timing Data @section Introduction The timing data for the XXX version of RTEMS is provided along with the target dependent aspects concerning the gathering of the timing data. The hardware platform used to gather the times is described to give the reader a better understanding of each directive time provided. Also, provided is a description of the interrupt latency and the context switch times as they pertain to the XXX version of RTEMS. @section Hardware Platform All times reported except for the maximum period interrupts are disabled by RTEMS were measured using a Motorola BSP_FOR_TIMES CPU board. The BSP_FOR_TIMES is a 20Mhz board with one wait state dynamic memory and a XXX numeric coprocessor. The Zilog 8036 countdown timer on this board was used to measure elapsed time with a one-half microsecond resolution. All sources of hardware interrupts were disabled, although the interrupt level of the XXX allows all interrupts. The maximum period interrupts are disabled was measured by summing the number of CPU cycles required by each assembly language instruction executed while interrupts were disabled. The worst case times of the XXX microprocessor were used for each instruction. Zero wait state memory was assumed. The total CPU cycles executed with interrupts disabled, including the instructions to disable and enable interrupts, was divided by 20 to simulate a 20Mhz XXX. It should be noted that the worst case instruction times for the XXX assume that the internal cache is disabled and that no instructions overlap. @section Interrupt Latency The maximum period with interrupts disabled within RTEMS is less than TBD microseconds including the instructions which disable and re-enable interrupts. The time required for the XXX to vector an interrupt and for the RTEMS entry overhead before invoking the user's interrupt handler are a total of 9 microseconds. These combine to yield a worst case interrupt latency of less than TBD + 9 microseconds at 20Mhz. [NOTE: The maximum period with interrupts disabled was last determined for Release 4.0.0.] It should be noted again that the maximum period with interrupts disabled within RTEMS is hand-timed and based upon worst case (i.e. CPU cache disabled and no instruction overlap) times for a 20Mhz XXX. The interrupt vector and entry overhead time was generated on an BSP_FOR_TIMES benchmark platform using the Multiprocessing Communications registers to generate as the interrupt source. @section Context Switch The RTEMS processor context switch time is 35 microseconds on the BSP_FOR_TIMES benchmark platform when no floating point context is saved or restored. Additional execution time is required when a TASK_SWITCH user extension is configured. The use of the TASK_SWITCH extension is application dependent. Thus, its execution time is not considered part of the raw context switch time. Since RTEMS was designed specifically for embedded missile applications which are floating point intensive, the executive is optimized to avoid unnecessarily saving and restoring the state of the numeric coprocessor. The state of the numeric coprocessor is only saved when an FLOATING_POINT task is dispatched and that task was not the last task to utilize the coprocessor. In a system with only one FLOATING_POINT task, the state of the numeric coprocessor will never be saved or restored. When the first FLOATING_POINT task is dispatched, RTEMS does not need to save the current state of the numeric coprocessor. The exact amount of time required to save and restore floating point context is dependent on whether an XXX or XXX is being used as well as the state of the numeric coprocessor. These numeric coprocessors define three operating states: initialized, idle, and busy. RTEMS places the coprocessor in the initialized state when a task is started or restarted. Once the task has utilized the coprocessor, it is in the idle state when floating point instructions are not executing and the busy state when floating point instructions are executing. The state of the coprocessor is task specific. The following table summarizes the context switch times for the BSP_FOR_TIMES benchmark platform: @c ****** This comment is here to remind you not to edit the timetbl.t @c ****** in any directory but common. @c @c Time Table Template @c @c COPYRIGHT (c) 1988-1999. @c On-Line Applications Research Corporation (OAR). @c All rights reserved. @c @c $Id$ @c @ifset use-tex @sp 1 @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{No Floating Point Contexts}{35} \rtemsdirective{Floating Point Contexts} \rtemscase{restore first FP task}{39} \rtemscase{save initialized, restore initialized}{66} \rtemscase{save idle, restore initialized}{66} \rtemscase{save idle, restore idle}{68} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item No Floating Point Contexts @itemize - @item only case: 35 @end itemize @item Floating Point Contexts @itemize - @item restore first FP task: 39 @item save initialized, restore initialized: 66 @item save idle, restore initialized: 66 @item save idle, restore idle: 66 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
No Floating Point Contexts 35
Floating Point Contexts
restore first FP task
 39
save initialized, restore initialized
 66
save idle, restore initialized
 66
save idle, restore idle
 68
@end html @end ifset @section Directive Times This sections is divided into a number of subsections, each of which contains a table listing the execution times of that manager's directives. @page @section Task Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{TASK\_CREATE}{148} \rtemsonecase{TASK\_IDENT}{350} \rtemsonecase{TASK\_START}{76} \rtemsdirective{TASK\_RESTART} \rtemscase{calling task}{95} \rtemscase{suspended task -- returns to caller} {89} \rtemscase{blocked task -- returns to caller} {124} \rtemscase{ready task -- returns to caller} {92} \rtemscase{suspended task -- preempts caller} {125} \rtemscase{blocked task -- preempts caller} {149} \rtemscase{ready task -- preempts caller} {142} \rtemsdirective{TASK\_DELETE} \rtemscase{calling task}{170} \rtemscase{suspended task}{138} \rtemscase{blocked task}{143} \rtemscase{ready task}{144} \rtemsdirective{TASK\_SUSPEND} \rtemscase{calling task}{71} \rtemscase{returns to caller}{43} \rtemsdirective{TASK\_RESUME} \rtemscase{task readied -- returns to caller} {45} \rtemscase{task readied -- preempts caller} {67} \rtemsdirective{TASK\_SET\_PRIORITY} \rtemscase{obtain current priority} {31} \rtemscase{returns to caller}{64} \rtemscase{preempts caller}{106} \rtemsdirective{TASK\_MODE} \rtemscase{obtain current mode}{14} \rtemscase{no reschedule}{16} \rtemscase{reschedule -- returns to caller} {23} \rtemscase{reschedule -- preempts caller} {60} \rtemsonecase{TASK\_GET\_NOTE}{33} \rtemsonecase{TASK\_SET\_NOTE}{33} \rtemsdirective{TASK\_WAKE\_AFTER} \rtemscase{yield -- returns to caller} {16} \rtemscase{yield -- preempts caller} {56} \rtemsonecase{TASK\_WAKE\_WHEN}{117} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item TASK_CREATE @itemize - @item only case: 148 @end itemize @item TASK_IDENT @itemize - @item only case: 350 @end itemize @item TASK_START @itemize - @item only case: 76 @end itemize @item TASK_RESTART @itemize - @item calling task: 95 @item suspended task -- returns to caller: 89 @item blocked task -- returns to caller: 124 @item ready task -- returns to caller: 92 @item suspended task -- preempts caller: 125 @item blocked task -- preempts caller: 149 @item ready task -- preempts caller: 142 @end itemize @item TASK_DELETE @itemize - @item calling task: 170 @item suspended task: 138 @item blocked task: 143 @item ready task: 144 @end itemize @item TASK_SUSPEND @itemize - @item calling task: 71 @item returns to caller: 43 @end itemize @item TASK_RESUME @itemize - @item task readied -- returns to caller: 45 @item task readied -- preempts caller: 67 @end itemize @item TASK_SET_PRIORITY @itemize - @item obtain current priority: 31 @item returns to caller: 64 @item preempts caller: 106 @end itemize @item TASK_MODE @itemize - @item obtain current mode: 14 @item no reschedule: 16 @item reschedule -- returns to caller: 23 @item reschedule -- preempts caller: 60 @end itemize @item TASK_GET_NOTE @itemize - @item only case: 33 @end itemize @item TASK_SET_NOTE @itemize - @item only case: 33 @end itemize @item TASK_WAKE_AFTER @itemize - @item yield -- returns to caller: 16 @item yield -- preempts caller: 56 @end itemize @item TASK_WAKE_WHEN @itemize - @item only case: 117 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
TASK_CREATE 148
TASK_IDENT 350
TASK_START 76
TASK_RESTART
calling task
 95
suspended task -- returns to caller
 89
blocked task -- returns to caller
 124
ready task -- returns to caller
 92
suspended task -- preempts caller
 125
blocked task -- preempts caller
 149
ready task -- preempts caller
 142
TASK_DELETE
calling task
 170
suspended task
 138
blocked task
 143
ready task
 144
TASK_SUSPEND
calling task
 71
returns to caller
 43
TASK_RESUME
task readied -- returns to caller
 45
task readied -- preempts caller
 67
TASK_SET_PRIORITY
obtain current priority
 31
returns to caller
 64
preempts caller
 106
TASK_MODE
obtain current mode
 14
no reschedule
 16
reschedule -- returns to caller
 23
reschedule -- preempts caller
 60
TASK_GET_NOTE 33
TASK_SET_NOTE 33
TASK_WAKE_AFTER
yield -- returns to caller
 16
yield -- preempts caller
 56
TASK_WAKE_WHEN 117
@end html @end ifset @page @section Interrupt Manager It should be noted that the interrupt entry times include vectoring the interrupt handler. @ifset use-tex @sp 1 @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsdirective{Interrupt Entry Overhead} \rtemscase{returns to nested interrupt}{12} \rtemscase{returns to interrupted task} {9} \rtemscase{returns to preempting task} {9} \rtemsdirective{Interrupt Exit Overhead} \rtemscase{returns to nested interrupt}{<1} \rtemscase{returns to interrupted task} {8} \rtemscase{returns to preempting task} {54} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item Interrupt Entry Overhead @itemize - @item returns to nested interrupt: 12 @item returns to interrupted task: 9 @item returns to preempting task: 9 @end itemize @item Interrupt Exit Overhead @itemize - @item returns to nested interrupt: <1 @item returns to interrupted task: 8 @item returns to preempting task: 54 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
Interrupt Entry Overhead
returns to nested interrupt
 12
returns to interrupted task
 9
returns to preempting task
 9
Interrupt Exit Overhead
returns to nested interrupt
 <1
returns to interrupted task
 8
returns to preempting task
 54
@end html @end ifset @section Clock Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{CLOCK\_SET}{86} \rtemsonecase{CLOCK\_GET}{1} \rtemsonecase{CLOCK\_TICK}{17} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item CLOCK_SET @itemize - @item only case: 86 @end itemize @item CLOCK_GET @itemize - @item only case: 1 @end itemize @item CLOCK_TICK @itemize - @item only case: 17 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
CLOCK_SET 86
CLOCK_GET 1
CLOCK_TICK 17
@end html @end ifset @section Timer Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{TIMER\_CREATE}{28} \rtemsonecase{TIMER\_IDENT}{343} \rtemsdirective{TIMER\_DELETE} \rtemscase{inactive}{43} \rtemscase{active}{47} \rtemsdirective{TIMER\_FIRE\_AFTER} \rtemscase{inactive}{58} \rtemscase{active}{61} \rtemsdirective{TIMER\_FIRE\_WHEN} \rtemscase{inactive}{88} \rtemscase{active}{88} \rtemsdirective{TIMER\_RESET} \rtemscase{inactive}{54} \rtemscase{active}{58} \rtemsdirective{TIMER\_CANCEL} \rtemscase{inactive}{31} \rtemscase{active}{34} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item TIMER_CREATE @itemize - @item only case: 28 @end itemize @item TIMER_IDENT @itemize - @item only case: 343 @end itemize @item TIMER_DELETE @itemize - @item inactive: 43 @item active: 47 @end itemize @item TIMER_FIRE_AFTER @itemize - @item inactive: 58 @item active: 61 @end itemize @item TIMER_FIRE_WHEN @itemize - @item inactive: TIMER_FIRE_WHEN_INACTIVE @item active: TIMER_FIRE_WHEN_ACTIVE @end itemize @item TIMER_RESET @itemize - @item inactive: TIMER_RESET_INACTIVE @item active: TIMER_RESET_ACTIVE @end itemize @item TIMER_CANCEL @itemize - @item inactive: TIMER_CANCEL_INACTIVE @item active: TIMER_CANCEL_ACTIVE @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
TIMER_CREATE 28
TIMER_IDENT 343
TIMER_DELETE
inactive
 43
active
 47
TIMER_FIRE_AFTER
inactive
 58
active
 61
TIMER_FIRE_WHEN
inactive
 88
active
 88
TIMER_RESET
inactive
 54
active
 58
TIMER_CANCEL
inactive
 31
active
 34
@end html @end ifset @page @section Semaphore Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{SEMAPHORE\_CREATE}{60} \rtemsonecase{SEMAPHORE\_IDENT}{367} \rtemsonecase{SEMAPHORE\_DELETE}{58} \rtemsdirective{SEMAPHORE\_OBTAIN} \rtemscase{available}{38} \rtemscase{not available -- NO\_WAIT} {38} \rtemscase{not available -- caller blocks} {109} \rtemsdirective{SEMAPHORE\_RELEASE} \rtemscase{no waiting tasks}{44} \rtemscase{task readied -- returns to caller} {66} \rtemscase{task readied -- preempts caller} {87} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item SEMAPHORE_CREATE @itemize - @item only case: 60 @end itemize @item SEMAPHORE_IDENT @itemize - @item only case: 367 @end itemize @item SEMAPHORE_DELETE @itemize - @item only case: 58 @end itemize @item SEMAPHORE_OBTAIN @itemize - @item available: 38 @item not available -- NO_WAIT: 38 @item not available -- caller blocks: 109 @end itemize @item SEMAPHORE_RELEASE @itemize - @item no waiting tasks: 44 @item task readied -- returns to caller: 66 @item task readied -- preempts caller: 87 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
SEMAPHORE_CREATE 60
SEMAPHORE_IDENT 367
SEMAPHORE_DELETE 58
SEMAPHORE_OBTAIN
available
 38
not available -- NO_WAIT
 38
not available -- caller blocks
 109
SEMAPHORE_RELEASE
no waiting tasks
 44
task readied -- returns to caller
 66
task readied -- preempts caller
 87
@end html @end ifset @section Message Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{MESSAGE\_QUEUE\_CREATE}{200} \rtemsonecase{MESSAGE\_QUEUE\_IDENT}{341} \rtemsonecase{MESSAGE\_QUEUE\_DELETE}{80} \rtemsdirective{MESSAGE\_QUEUE\_SEND} \rtemscase{no waiting tasks} {97} \rtemscase{task readied -- returns to caller} {101} \rtemscase{task readied -- preempts caller} {123} \rtemsdirective{MESSAGE\_QUEUE\_URGENT} \rtemscase{no waiting tasks}{96} \rtemscase{task readied -- returns to caller} {101} \rtemscase{task readied -- preempts caller} {123} \rtemsdirective{MESSAGE\_QUEUE\_BROADCAST} \rtemscase{no waiting tasks}{53} \rtemscase{task readied -- returns to caller} {111} \rtemscase{task readied -- preempts caller} {133} \rtemsdirective{MESSAGE\_QUEUE\_RECEIVE} \rtemscase{available}{79} \rtemscase{not available -- NO\_WAIT} {43} \rtemscase{not available -- caller blocks} {114} \rtemsdirective{MESSAGE\_QUEUE\_FLUSH} \rtemscase{no messages flushed}{29} \rtemscase{messages flushed}{39} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item MESSAGE_QUEUE_CREATE @itemize - @item only case: 200 @end itemize @item MESSAGE_QUEUE_IDENT @itemize - @item only case: 341 @end itemize @item MESSAGE_QUEUE_DELETE @itemize - @item only case: 80 @end itemize @item MESSAGE_QUEUE_SEND @itemize - @item no waiting tasks: 97 @item task readied -- returns to caller: 101 @item task readied -- preempts caller: 123 @end itemize @item MESSAGE_QUEUE_URGENT @itemize - @item no waiting tasks: 96 @item task readied -- returns to caller: 101 @item task readied -- preempts caller: 123 @end itemize @item MESSAGE_QUEUE_BROADCAST @itemize - @item no waiting tasks: 53 @item task readied -- returns to caller: 111 @item task readied -- preempts caller: 133 @end itemize @item MESSAGE_QUEUE_RECEIVE @itemize - @item available: 79 @item not available -- NO_WAIT: 43 @item not available -- caller blocks: 114 @end itemize @item MESSAGE_QUEUE_FLUSH @itemize - @item no messages flushed: 29 @item messages flushed: 39 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
MESSAGE_QUEUE_CREATE 200
MESSAGE_QUEUE_IDENT 341
MESSAGE_QUEUE_DELETE 80
MESSAGE_QUEUE_SEND
no waiting tasks
 97
task readied -- returns to caller
 101
task readied -- preempts caller
 123
MESSAGE_QUEUE_URGENT
no waiting tasks
 96
task readied -- returns to caller
 101
task readied -- preempts caller
 123
MESSAGE_QUEUE_BROADCAST
no waiting tasks
 53
task readied -- returns to caller
 111
task readied -- preempts caller
 133
MESSAGE_QUEUE_RECEIVE
available
 79
not available -- NO_WAIT
 43
not available -- caller blocks
 114
MESSAGE_QUEUE_FLUSH
no messages flushed
 29
messages flushed
 39
@end html @end ifset @page @section Event Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsdirective{EVENT\_SEND} \rtemscase{no task readied}{24} \rtemscase{task readied -- returns to caller} {60} \rtemscase{task readied -- preempts caller} {84} \rtemsdirective{EVENT\_RECEIVE} \rtemscase{obtain current events}{1} \rtemscase{available}{28} \rtemscase{not available -- NO\_WAIT}{23} \rtemscase{not available -- caller blocks} {84} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item EVENT_SEND @itemize - @item no task readied: 24 @item task readied -- returns to caller: 60 @item task readied -- preempts caller: 84 @end itemize @item EVENT_RECEIVE @itemize - @item obtain current events: 1 @item available: 28 @item not available -- NO_WAIT: 23 @item not available -- caller blocks: 84 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
EVENT_SEND
no task readied
 24
task readied -- returns to caller
 60
task readied -- preempts caller
 84
EVENT_RECEIVE
obtain current events
 1
available
 28
not available -- NO_WAIT
 23
not available -- caller blocks
 84
@end html @end ifset @section Signal Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{SIGNAL\_CATCH}{15} \rtemsdirective{SIGNAL\_SEND} \rtemscase{returns to caller}{37} \rtemscase{signal to self}{55} \rtemsdirective{EXIT ASR OVERHEAD} \rtemscase{returns to calling task} {37} \rtemscase{returns to preempting task} {54} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item SIGNAL_CATCH @itemize - @item only case: 15 @end itemize @item SIGNAL_SEND @itemize - @item returns to caller: 37 @item signal to self: 55 @end itemize @item EXIT ASR OVERHEAD @itemize - @item returns to calling task: 37 @item returns to preempting task: 54 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
SIGNAL_CATCH 15
SIGNAL_SEND
returns to caller
 37
signal to self
 55
EXIT ASR OVERHEAD
returns to calling task
 37
returns to preempting task
 54
@end html @end ifset @section Partition Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{PARTITION\_CREATE}{70} \rtemsonecase{PARTITION\_IDENT}{341} \rtemsonecase{PARTITION\_DELETE}{42} \rtemsdirective{PARTITION\_GET\_BUFFER} \rtemscase{available}{35} \rtemscase{not available}{33} \rtemsonecase{PARTITION\_RETURN\_BUFFER} {33} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item PARTITION_CREATE @itemize - @item only case: 70 @end itemize @item PARTITION_IDENT @itemize - @item only case: 341 @end itemize @item PARTITION_DELETE @itemize - @item only case: 42 @end itemize @item PARTITION_GET_BUFFER @itemize - @item available: 35 @item not available: 33 @end itemize @item PARTITION_RETURN_BUFFER @itemize - @item only case: 43 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
PARTITION_CREATE 70
PARTITION_IDENT 341
PARTITION_DELETE 42
PARTITION_GET_BUFFER
available
 35
not available
 33
PARTITION_RETURN_BUFFER 33
@end html @end ifset @page @section Region Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{REGION\_CREATE}{63} \rtemsonecase{REGION\_IDENT}{348} \rtemsonecase{REGION\_DELETE}{39} \rtemsdirective{REGION\_GET\_SEGMENT} \rtemscase{available}{52} \rtemscase{not available -- NO\_WAIT} {49} \rtemscase{not available -- caller blocks} {123} \rtemsdirective{REGION\_RETURN\_SEGMENT} \rtemscase{no waiting tasks}{54} \rtemscase{task readied -- returns to caller} {114} \rtemscase{task readied -- preempts caller} {136} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item REGION_CREATE @itemize - @item only case: 63 @end itemize @item REGION_IDENT @itemize - @item only case: 348 @end itemize @item REGION_DELETE @itemize - @item only case: 39 @end itemize @item REGION_GET_SEGMENT @itemize - @item available: 52 @item not available -- NO_WAIT: 49 @item not available -- caller blocks: 123 @end itemize @item REGION_RETURN_SEGMENT @itemize - @item no waiting tasks: 54 @item task readied -- returns to caller: 114 @item task readied -- preempts caller: 136 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
REGION_CREATE 63
REGION_IDENT 348
REGION_DELETE 39
REGION_GET_SEGMENT
available
 52
not available -- NO_WAIT
 49
not available -- caller blocks
 123
REGION_RETURN_SEGMENT
no waiting tasks
 54
task readied -- returns to caller
 114
task readied -- preempts caller
 136
@end html @end ifset @section Dual-Ported Memory Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{PORT\_CREATE}{35} \rtemsonecase{PORT\_IDENT}{340} \rtemsonecase{PORT\_DELETE}{39} \rtemsonecase{PORT\_INTERNAL\_TO\_EXTERNAL} {26} \rtemsonecase{PORT\_EXTERNAL\_TO\_INTERNAL} {27} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item PORT_CREATE @itemize - @item only case: 35 @end itemize @item PORT_IDENT @itemize - @item only case: 340 @end itemize @item PORT_DELETE @itemize - @item only case: 39 @end itemize @item PORT_INTERNAL_TO_EXTERNAL @itemize - @item only case: 26 @end itemize @item PORT_EXTERNAL_TO_INTERNAL @itemize - @item only case: 27 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
PORT_CREATE 35
PORT_IDENT 340
PORT_DELETE 39
PORT_INTERNAL_TO_EXTERNAL 26
PORT_EXTERNAL_TO_INTERNAL 27
@end html @end ifset @section I/O Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{IO\_INITIALIZE}{4} \rtemsonecase{IO\_OPEN}{2} \rtemsonecase{IO\_CLOSE}{1} \rtemsonecase{IO\_READ}{2} \rtemsonecase{IO\_WRITE}{3} \rtemsonecase{IO\_CONTROL}{2} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item IO_INITIALIZE @itemize - @item only case: 4 @end itemize @item IO_OPEN @itemize - @item only case: 2 @end itemize @item IO_CLOSE @itemize - @item only case: 1 @end itemize @item IO_READ @itemize - @item only case: 2 @end itemize @item IO_WRITE @itemize - @item only case: 3 @end itemize @item IO_CONTROL @itemize - @item only case: 2 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
IO_INITIALIZE 4
IO_OPEN 2
IO_CLOSE 1
IO_READ 2
IO_WRITE 3
IO_CONTROL 2
@end html @end ifset @section Rate Monotonic Manager @ifset use-tex @tex \centerline{\vbox{\offinterlineskip\halign{ \span\rtemstimetable \rtemsonecase{RATE\_MONOTONIC\_CREATE}{32} \rtemsonecase{RATE\_MONOTONIC\_IDENT}{341} \rtemsonecase{RATE\_MONOTONIC\_CANCEL}{39} \rtemsdirective{RATE\_MONOTONIC\_DELETE} \rtemscase{active}{51} \rtemscase{inactive}{48} \rtemsdirective{RATE\_MONOTONIC\_PERIOD} \rtemscase{initiate period -- returns to caller} {54} \rtemscase{conclude period -- caller blocks} {74} \rtemscase{obtain status}{31} \rtemsendtimetable }}\hfil} @end tex @end ifset @ifset use-ascii @ifinfo @itemize @bullet @item RATE_MONOTONIC_CREATE @itemize - @item only case: 32 @end itemize @item RATE_MONOTONIC_IDENT @itemize - @item only case: 341 @end itemize @item RATE_MONOTONIC_CANCEL @itemize - @item only case: 39 @end itemize @item RATE_MONOTONIC_DELETE @itemize - @item active: 51 @item inactive: 48 @end itemize @item RATE_MONOTONIC_PERIOD @itemize - @item initiate period -- returns to caller: 54 @item conclude period -- caller blocks: 74 @item obtain status: 31 @end itemize @end itemize @end ifinfo @end ifset @ifset use-html @html
RATE_MONOTONIC_CREATE 32
RATE_MONOTONIC_IDENT 341
RATE_MONOTONIC_CANCEL 39
RATE_MONOTONIC_DELETE
active
 51
inactive
 48
RATE_MONOTONIC_PERIOD
initiate period -- returns to caller
 54
conclude period -- caller blocks
 74
obtain status
 31
@end html @end ifset @tex \global\advance \smallskipamount by 4pt @end tex @tex \global\advance \smallskipamount by 4pt @end tex