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realvnc:cdbsbp [2012/10/23 17:20]
andy
realvnc:cdbsbp [2012/11/09 13:15]
andy
Line 5: Line 5:
 <​graphviz dot> <​graphviz dot>
 digraph G { digraph G {
-  graph [dpi=60];+  graph [dpi=48];
   node [shape=circle margin="​0.1,​0.05"​];​   node [shape=circle margin="​0.1,​0.05"​];​
   idle [label="​Idle"​];​   idle [label="​Idle"​];​
Line 12: Line 12:
   check_valid [label="​Message\nvalid?"​];​   check_valid [label="​Message\nvalid?"​];​
   check_pending [label="​Same type\nalready pending?"​];​   check_pending [label="​Same type\nalready pending?"​];​
 +  check_active_timer [label="​Timer already active?"​];​
 +  check_timers [label="​Are there messages timed out?"​];​
 +  check_rx_pending [label="​Request\npending?"​];​
   ​   ​
   node [shape=parallelogram margin="​0.0"​];​   node [shape=parallelogram margin="​0.0"​];​
   send_call [label="​API call to send message"​];​   send_call [label="​API call to send message"​];​
 +  timeout [label="​Timer expires"​];​
 +  response [label="​Receive command response"​];​
  
   node [shape=box style=rounded margin="​0.1,​0.05"​];​   node [shape=box style=rounded margin="​0.1,​0.05"​];​
Line 22: Line 27:
   mark_queued [label="​Record type as pending"​];​   mark_queued [label="​Record type as pending"​];​
   set_timer [label="​Initiate 5 second timer"​];​   set_timer [label="​Initiate 5 second timer"​];​
-  ​+  ​reset_timer [label="​Reset timer to next timeout, if any"​];​ 
 +  cancel_pending [label="​Cancel pending message"​];​ 
 +  timeout_callback [label="​Call client callback to inform app"​];​ 
 +  response_callback [label="​Pass response to client callback"​];​ 
   idle -> send_call -> check_valid;​   idle -> send_call -> check_valid;​
   check_valid -> return_error [label="​no"​];​   check_valid -> return_error [label="​no"​];​
Line 29: Line 38:
   check_pending -> return_error [label="​yes"​];​   check_pending -> return_error [label="​yes"​];​
   check_pending -> queue_message [label="​no"​];​   check_pending -> queue_message [label="​no"​];​
-  queue_message -> mark_queued -> set_timer -> return_success -> idle;+  queue_message -> mark_queued ​-> check_active_timer;​ 
 +  check_active_timer ​-> set_timer [label="​no"​];​ 
 +  check_active_timer -> return_success [label="​yes"​];​ 
 +  ​set_timer -> return_success -> idle; 
 + 
 +  idle -> timeout -> check_timers;​ 
 +  check_timers -> reset_timer [label="​no"​];​ 
 +  check_timers -> timeout_callback [label="​yes"​];​ 
 +  timeout_callback -> reset_timer -> cancel_pending -> idle; 
 +   
 +  idle -> response -> check_rx_pending;​ 
 +  check_rx_pending -> idle [label="​no"​];​ 
 +  check_rx_pending -> response_callback [label="​yes"​];​ 
 +  response_callback -> cancel_pending;​ 
 +
 +</​graphviz>​ 
 + 
 +===== CDB Endpoint ===== 
 + 
 +This sequence diagram indicates the calls performed by the source and sink during a standard CDB-level endpoint exchange: 
 + 
 +<​graphviz>​ 
 +digraph sequence { 
 +  graph [dpi=60]; 
 +  node [shape=box];​ 
 +  {rank=same; "​Source";​ "​Sink";​ "​SDK";​} 
 +  node [shape=point];​ 
 +  "​Source"​ -> "​src_2"​ [arrowhead=none];​ 
 +  "​SDK"​ -> "​dst_2"​ [arrowhead=none];​ 
 +  {rank=same; "​src_2"​ -> "​dst_2"​ [label="​VNCCDBSDKInitialize()"​];​} 
 +  "​src_2"​ -> "​src_3"​ [arrowhead=none];​ 
 +  "​dst_2"​ -> "​dst_3"​ [arrowhead=none];​ 
 +  {rank=same; "​src_3"​ -> "​dst_3"​ [label="​VNCCDBEndpointCreate()"​];​} 
 +  "​src_3"​ -> "​src_4"​ [arrowhead=none];​ 
 +  "​dst_3"​ -> "​dst_4"​ [arrowhead=none];​ 
 +  {rank=same; "​src_4"​ -> "​dst_4"​ [label="​VNCCDBEndpointAddLicense()"​];​} 
 +  "​src_4"​ -> "​src_5"​ [arrowhead=none];​ 
 +  "​dst_4"​ -> "​dst_5"​ [arrowhead=none];​ 
 +  {rank=same; "​src_5"​ -> "​dst_5"​ [label="​VNCCDBEndpointAddCDBSource()"​];​} 
 +  "​src_5"​ -> "​src_6"​ [arrowhead=none];​ 
 +  "​dst_5"​ -> "​dst_6"​ [arrowhead=none];​ 
 +  {rank=same; "​src_6"​ -> "​dst_6"​ [label="​VNCCDBEndpointStart()"​];​} 
 +  "​Sink"​ -> "​src_8"​ [arrowhead=none];​ 
 +  "​dst_6"​ -> "​dst_8"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_8"​ -> "​src_8"​ [label="​VNCCDBSDKInitialize()"​ dir=back];​} 
 +  "​src_8"​ -> "​src_9"​ [arrowhead=none];​ 
 +  "​dst_8"​ -> "​dst_9"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_9"​ -> "​src_9"​ [label="​VNCCDBEndpointCreate()"​ dir=back];​} 
 +  "​src_9"​ -> "​src_10"​ [arrowhead=none];​ 
 +  "​dst_9"​ -> "​dst_10"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_10"​ -> "​src_10"​ [label="​VNCCDBEndpointAddLicense()"​ dir=back];​} 
 +  "​dst_10"​ -> "​src_11"​ [arrowhead=none];​ 
 +  "​src_10"​ -> "​dst_11"​ [arrowhead=none];​ 
 +  {rank=same; "​src_11"​ -> "​dst_11"​ [label="​VNCCDBEndpointServicesSupportedCallback()"​];​} 
 +  "​dst_11"​ -> "​src_12"​ [arrowhead=none];​ 
 +  "​src_11"​ -> "​dst_12"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_12"​ -> "​src_12"​ [label="​VNCCDBEndpointAddCDBSink()"​ dir=back];​} 
 +  "​src_12"​ -> "​src_13"​ [arrowhead=none];​ 
 +  "​dst_12"​ -> "​dst_13"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_13"​ -> "​src_13"​ [label="​VNCCDBEndpointSendStartService()"​ dir=back];​} 
 +  "​dst_13"​ -> "​src_15"​ [arrowhead=none];​ 
 +  "​src_6"​ -> "​dst_15"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_15"​ -> "​src_15"​ [label="​VNCCDBEndpointStartServiceCallback()"​ dir=back];​} 
 +  "​dst_15"​ -> "​src_16"​ [arrowhead=none];​ 
 +  "​src_15"​ -> "​dst_16"​ [arrowhead=none];​ 
 +  {rank=same; "​src_16"​ -> "​dst_16"​ [label="​VNCCDBEndpointSendServiceResponse()"​];​} 
 +  "​dst_16"​ -> "​src_17"​ [arrowhead=none];​ 
 +  "​src_13"​ -> "​dst_17"​ [arrowhead=none];​ 
 +  {rank=same; "​src_17"​ -> "​dst_17"​ [label="​VNCCDBEndpointServiceResponseCallback()"​];​} 
 +  "​dst_17"​ -> "​src_19"​ [arrowhead=none];​ 
 +  "​src_17"​ -> "​dst_19"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_19"​ -> "​src_19"​ [label="​VNCCDBEndpointSendServicePayload()"​ dir=back];​} 
 +  "​dst_19"​ -> "​src_20"​ [arrowhead=none];​ 
 +  "​src_16"​ -> "​dst_20"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_20"​ -> "​src_20"​ [label="​VNCCDBEndpointServicePayloadCallback()"​ dir=back];​} 
 +  "​dst_20"​ -> "​src_21"​ [arrowhead=none];​ 
 +  "​src_20"​ -> "​dst_21"​ [arrowhead=none];​ 
 +  {rank=same; "​src_21"​ -> "​dst_21"​ [label="​VNCCDBEndpointSendServicePayload()"​];​} 
 +  "​dst_21"​ -> "​src_22"​ [arrowhead=none];​ 
 +  "​src_19"​ -> "​dst_22"​ [arrowhead=none];​ 
 +  {rank=same; "​src_22"​ -> "​dst_22"​ [label="​VNCCDBEndpointServicePayloadCallback()"​];​} 
 +  "​dst_22"​ -> "​src_24"​ [arrowhead=none];​ 
 +  "​src_22"​ -> "​dst_24"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_24"​ -> "​src_24"​ [label="​VNCCDBEndpointSendStopService()"​ dir=back];​} 
 +  "​dst_24"​ -> "​src_25"​ [arrowhead=none];​ 
 +  "​src_21"​ -> "​dst_25"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_25"​ -> "​src_25"​ [label="​VNCCDBEndpointStopServiceCallback()"​ dir=back];​} 
 +  "​dst_25"​ -> "​src_26"​ [arrowhead=none];​ 
 +  "​src_25"​ -> "​dst_26"​ [arrowhead=none];​ 
 +  {rank=same; "​src_26"​ -> "​dst_26"​ [label="​VNCCDBEndpointSendServiceResponse()"​];​} 
 +  "​dst_26"​ -> "​src_27"​ [arrowhead=none];​ 
 +  "​src_24"​ -> "​dst_27"​ [arrowhead=none];​ 
 +  {rank=same; "​src_27"​ -> "​dst_27"​ [label="​VNCCDBEndpointServiceResponseCallback()"​];​} 
 +  "​dst_27"​ -> "​src_29"​ [arrowhead=none];​ 
 +  "​src_27"​ -> "​dst_29"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_29"​ -> "​src_29"​ [label="​VNCCDBEndpointStop()"​ dir=back];​} 
 +  "​src_29"​ -> "​src_30"​ [arrowhead=none];​ 
 +  "​dst_29"​ -> "​dst_30"​ [arrowhead=none];​ 
 +  {rank=same; "​dst_30"​ -> "​src_30"​ [label="​VNCCDBEndpointDestroy()"​ dir=back];​} 
 +  "​src_26"​ -> "​src_31"​ [arrowhead=none];​ 
 +  "​dst_30"​ -> "​dst_31"​ [arrowhead=none];​ 
 +  {rank=same; "​src_31"​ -> "​dst_31"​ [label="​VNCCDBEndpointStop()"​];​} 
 +  "​src_31"​ -> "​src_32"​ [arrowhead=none];​ 
 +  "​dst_31"​ -> "​dst_32"​ [arrowhead=none];​ 
 +  {rank=same; "​src_32"​ -> "​dst_32"​ [label="​VNCCDBEndpointDestroy()"​];​} 
 +  node [shape=box] 
 +  {rank=same; "​end_Source"​ [label="​Source"​];"​end_Sink"​ [label="​Sink"​];"​end_SDK"​ [label="​SDK"​];​} 
 +  "​src_32"​ -> "​end_Source"​ [arrowhead=none];​ 
 +  "​src_30"​ -> "​end_Sink"​ [arrowhead=none];​ 
 +  "​dst_32"​ -> "​end_SDK"​ [arrowhead=none];​ 
 } }
 </​graphviz>​ </​graphviz>​
realvnc/cdbsbp.txt · Last modified: 2012/11/09 13:22 by andy