​x
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​
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​
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+------+   +-----+   +-----+   +-----+
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|      |   |     |   |     |   |     |
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| Foo  +-->| Bar +---+ Baz |<--+ Moo |
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|      |   |     |   |     |   |     |
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+------+   +-----+   +--+--+   +-----+
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              ^         |
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              |         V
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.-------------+-----------------------.
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| Hello here and there and everywhere |
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'-------------------------------------'
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​
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​
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                        ____________
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   .--------------.     \           \
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  / a == b         \     \           \     __________
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 (    &&            )     ) process   )    \         \
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  \ 'string' ne '' /     /           /     / process /
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   '--------------'     /___________/     /_________/
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​
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  User code  ^               ^ OS code
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              \             /
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               \        .--'
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                \      /
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  User code  <--- Mode ----> OS code
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                /      \
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            .--'        \___
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           /                \
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          v                  v
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       User code            OS code
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​
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             .---.  .---. .---.  .---.    .---.  .---.
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    OS API   '---'  '---' '---'  '---'    '---'  '---'
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               |      |     |      |        |      |
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               v      v     |      v        |      v
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             .------------. | .-----------. |  .-----.
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             | Filesystem | | | Scheduler | |  | MMU |
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             '------------' | '-----------' |  '-----'
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                    |       |      |        |
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                    v       |      |        v
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                 .----.     |      |    .---------.
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                 | IO |<----'      |    | Network |
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                 '----'            |    '---------'
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                    |              |         |
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                    v              v         v
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             .---------------------------------------.
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             |                  HAL                  |
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             '---------------------------------------'
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​
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   ____[]
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  | ___ |
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  ||   ||  device
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  ||___||  loads
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  | ooo |----------------------------------------------------------.
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  | ooo |    |                          |                          |
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  | ooo |    |                          |                          |
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  '_____'    |                          |                          |
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             |                          |                          |
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             v                          v                          v
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   .-------------------.  .---------------------------.  .-------------------.
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   | Loadable module C |  |     Loadable module A     |  | Loadable module B |
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   '-------------------'  |---------------------------|  |   (instrumented)  |
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             |            |         .-----.           |  '-------------------'
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             '------------+-------->| A.o |           |             |
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                 calls    |         '-----'           |             |
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                          |    .------------------.   |             |
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                          |   / A.instrumented.o /<---+-------------'
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                          |  '------------------'     |    calls
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                          '---------------------------'
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​
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​
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                                        .--> Base::Class::Derived_A
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                                       /
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                                      .----> Base::Class::Derived_B
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      Something -------.             /         \
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                        \           /           \---> Base::Class::Derived
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      Something::else    \         /             \
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            \             \       /               '--> Base::Class::Derived
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             \             \     /
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              \             \   .-----------> Base::Class::Derived_C
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               \             \ /
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                '------ Base::Class
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                       /  \ \ \
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                      '    \ \ \
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                      |     \ \ \
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                      .      \ \ '--- The::Latest
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                     /|       \ \      \
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 With::Some::fantasy  '        \ \      '---- The::Latest::Greatest
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                     /|         \ \
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         More::Stuff  '          \ '- I::Am::Running::Out::Of::Ideas
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                     /|           \
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         More::Stuff  '            \
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                     /              '--- Last::One
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         More::Stuff
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​
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  Safety
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    ^
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    |                       *Rust
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    |           *Java
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    | *Python
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    |                        *C++
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    +-----------------------------> Control
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​
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​
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​
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​
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​
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  TODO:
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​
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​
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        |   \/
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       -+-  /\
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        |
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        |      |    |      |
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        +--  --+    +--  --+   +--  --+
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                    |      |   |      |
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​
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                     |    |  |     |
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             .- -.   .-  -.  ._   _.
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             |   |
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​
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        .-   -.  .-.
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        '-   -'  | |  | |
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                      '-'
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​
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      \      |    /  |
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       .     '   '   .
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       |    /    |    \
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​
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       \
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       /
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​
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       /
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       \
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​
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​
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       /      \
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      '--    --'
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     /          \
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​
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       /   \
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    --'     '--
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     /       \
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​
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                       \         /
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       --.--  --.--   --.--   --.--
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        /        \
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​
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​
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        |   |
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        .   .
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       /|   |\
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​
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        |
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        .
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       / \
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​
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       \|/
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        .
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       /|\
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​
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       \|/
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      --.--
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       /|\
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​
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       \|/
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      --+--
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       /|\
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        |/  \|
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        .    .
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        |    |
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​
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​
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       -.  -.
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       /     \
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​
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        .-  .-
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       /     \
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​
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       /   /     \    \
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      '-  '_     _'   -'
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​
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       .-.
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      (   )
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       '-'
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​
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       ..
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      (  )
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       ''
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​
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​
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       .------.
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      (        )
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       '------'
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​
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        ________
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       /       /
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      /       /
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     /_______/
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​
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​
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        ________
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        \       \
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         \       \
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          \_______\
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​
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       ________
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      |________|
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​
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​
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       ________
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      |        |
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      |________|
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​
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      .-.
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      '-'
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​
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        ________
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        \_______\
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​
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       /\
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      /  \
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     /____\
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​
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       /\
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      /  \
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     /    \
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    '------'
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​
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       ___
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      /   \
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      \___/
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​
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      ______
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     /      \
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    /        \
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    \        /
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     \______/
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​
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        +---------+
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        |         |                        +--------------+
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        |   NFS   |--+                     |              |
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        |         |  |                 +-->|   CacheFS    |
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        +---------+  |   +----------+  |   |  /dev/hda5   |
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                     |   |          |  |   +--------------+
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        +---------+  +-->|          |  |
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        |         |      |          |--+
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        |   AFS   |----->| FS-Cache |
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        |         |      |          |--+
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        +---------+  +-->|          |  |
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                     |   |          |  |   +--------------+
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        +---------+  |   +----------+  |   |              |
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        |         |  |                 +-->|  CacheFiles  |
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        |  ISOFS  |--+                     |  /var/cache  |
264
        |         |                        +--------------+
265
        +---------+
266
FooBarBazMooHellohereandthereandeverywherea==b&&process'string'ne''processUsercodeOScodeUsercodeModeOScodeUsercodeOScodeOSAPIFilesystemSchedulerMMUIONetworkHAL[]deviceloadsoooooooooLoadablemoduleCLoadablemoduleALoadablemoduleB(instrumented)A.ocallsA.instrumented.ocallsBase::Class::Derived_ABase::Class::Derived_BSomethingBase::Class::DerivedSomething::elseBase::Class::DerivedBase::Class::Derived_CBase::ClassThe::LatestWith::Some::fantasyThe::Latest::GreatestMore::StuffI::Am::Running::Out::Of::IdeasMore::StuffLast::OneMore::StuffSafety*Rust*Java*Python*CControlTODO:NFSCacheFSdevhda5AFSFS-CacheCacheFilesISOFSvarcache