ceph/src/boost/libs/asio/doc/overview/proactor.dot

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   2 {
   3   edge
   4     [
   5       fontname="Helvetica",
   6       fontsize=10,
   7       labelfontname="Helvetica",
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  10
  11   node
  12     [
  13       fontname="Helvetica",
  14       fontsize=10,
  15       shape=record
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  17
  18   initiator
  19     [
  20       label="Initiator"
  21     ];
  22
  23   async_processor
  24     [
  25       label="Asynchronous\nOperation Processor"
  26     ];
  27
  28   async_op
  29     [
  30       label="Asynchronous\nOperation"
  31     ];
  32
  33   completion_queue
  34     [
  35       label="Completion\nEvent Queue"
  36     ];
  37
  38   async_event_demuxer
  39     [
  40       label="Asynchronous\nEvent Demultiplexer"
  41     ];
  42
  43   proactor
  44     [
  45       label="Proactor"
  46     ];
  47
  48   handler
  49     [
  50       label="Completion\nHandler"
  51     ];
  52
  53   initiator -> async_processor
  54     [
  55       label="uses",
  56       style="dashed"
  57     ];
  58
  59   initiator -> async_op
  60     [
  61       label="starts",
  62       style="dashed"
  63     ];
  64
  65   initiator -> handler
  66     [
  67       label="creates",
  68       style="dashed"
  69     ];
  70
  71   async_processor -> async_op
  72     [
  73       label="executes",
  74       style="dashed"
  75     ];
  76
  77   async_processor -> completion_queue
  78     [
  79       label="enqueues",
  80       style="dashed"
  81     ];
  82
  83   async_op -> handler;
  84
  85   async_event_demuxer -> completion_queue
  86     [
  87       label="dequeues",
  88       style="dashed"
  89     ];
  90
  91   proactor -> async_event_demuxer
  92     [
  93     ];
  94
  95   proactor -> handler
  96     [
  97       label="demultiplexes\n& dispatches"
  98       style="dashed"
  99     ];
 100 }