docs/source/Plugins.rst

   1 .. _plugins:
   2
   3 SimGrid Plugins
   4 ###############
   5
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  15    <br/>
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  17
  18 You can extend SimGrid without modifying it, thanks to our plugin
  19 mechanism. This page describes how to write your own plugin, and
  20 documents some of the plugins distributed with SimGrid:
  21
  22   - :ref:`Host Energy <plugin_host_energy>`: models the energy dissipation of the compute units.
  23   - :ref:`Link Energy <plugin_link_energy>`: models the energy dissipation of the network.
  24   - :ref:`Host Load <plugin_host_load>`: monitors the load of the compute units.
  25
  26 You can activate these plugins with the :ref:`--cfg=plugin <cfg=plugin>` command
  27 line option, for example with ``--cfg=plugin:host_energy``. You can get the full
  28 list of existing plugins with ``--cfg=plugin:help``.
  29
  30 Defining a Plugin
  31 *****************
  32
  33 A plugin can get some additional code executed within the SimGrid
  34 kernel, and attach the data needed by that code to the SimGrid
  35 objects.
  36
  37 The host load plugin in
  38 `src/plugins/host_load.cpp <https://framagit.org/simgrid/simgrid/tree/master/src/plugins/host_load.cpp>`_
  39 constitutes a good introductory example. It defines a class
  40 ```HostLoad``` that is meant to be attached to each host. This class
  41 contains a ```EXTENSION_ID``` field that is mandatory to our extension
  42 mechanism. Then, the function ```sg_host_load_plugin_init```
  43 initializes the plugin. It first calls
  44 :cpp:func:`simgrid::s4u::Host::extension_create()` to register its
  45 extension to the ```s4u::Host``` objects, and then attaches some
  46 callbacks to signals.
  47
  48 You can attach your own extension to most kinds of s4u object:
  49 :cpp:class:`Actors <simgrid::s4u::Actor>`,
  50 :cpp:class:`Disks <simgrid::s4u::Disk>`,
  51 :cpp:class:`Hosts <simgrid::s4u::Host>` and
  52 :cpp:class:`Links <simgrid::s4u::Link>`. If you need to extend another
  53 kind of objects, please let us now.
  54
  55 Partial list of existing signals in s4u:
  56
  57 - :cpp:member:`Actor::on_creation <simgrid::s4u::Actor::on_creation>`
  58   :cpp:member:`Actor::on_suspend <simgrid::s4u::Actor::on_suspend>`
  59   :cpp:member:`Actor::on_resume <simgrid::s4u::Actor::on_resume>`
  60   :cpp:member:`Actor::on_sleep <simgrid::s4u::Actor::on_sleep>`
  61   :cpp:member:`Actor::on_wake_up <simgrid::s4u::Actor::on_wake_up>`
  62   :cpp:member:`Actor::on_migration_start <simgrid::s4u::Actor::on_migration_start>`
  63   :cpp:member:`Actor::on_migration_end <simgrid::s4u::Actor::on_migration_end>`
  64   :cpp:member:`Actor::on_termination <simgrid::s4u::Actor::on_termination>`
  65   :cpp:member:`Actor::on_destruction <simgrid::s4u::Actor::on_destruction>`
  66 - :cpp:member:`Comm::on_sender_start <simgrid::s4u::Comm::on_sender_start>`
  67   :cpp:member:`Comm::on_receiver_start <simgrid::s4u::Comm::on_receiver_start>`
  68   :cpp:member:`Comm::on_completion <simgrid::s4u::Comm::on_completion>`
  69 - :cpp:member:`Engine::on_platform_creation <simgrid::s4u::Engine::on_platform_creation>`
  70   :cpp:member:`Engine::on_platform_created <simgrid::s4u::Engine::on_platform_created>`
  71   :cpp:member:`Engine::on_time_advance <simgrid::s4u::Engine::on_time_advance>`
  72   :cpp:member:`Engine::on_simulation_end <simgrid::s4u::Engine::on_simulation_end>`
  73   :cpp:member:`Engine::on_deadlock <simgrid::s4u::Engine::on_deadlock>`
  74 - :cpp:member:`Exec::on_start <simgrid::s4u::Exec::on_start>`
  75   :cpp:member:`Exec::on_completion <simgrid::s4u::Exec::on_completion>`
  76 - :cpp:member:`Host::on_creation <simgrid::s4u::Host::on_creation>`
  77   :cpp:member:`Host::on_destruction <simgrid::s4u::Host::on_destruction>`
  78   :cpp:member:`Host::on_state_change <simgrid::s4u::Host::on_state_change>`
  79   :cpp:member:`Host::on_speed_change <simgrid::s4u::Host::on_speed_change>`
  80 - :cpp:member:`Link::on_creation <simgrid::s4u::Link::on_creation>`
  81   :cpp:member:`Link::on_destruction <simgrid::s4u::Link::on_destruction>`
  82   :cpp:member:`Link::on_state_change <simgrid::s4u::Link::on_state_change>`
  83   :cpp:member:`Link::on_speed_change <simgrid::s4u::Link::on_bandwidth_change>`
  84   :cpp:member:`Link::on_communicate <simgrid::s4u::Link::on_communicate>`
  85   :cpp:member:`Link::on_communication_state_change <simgrid::s4u::Link::on_communication_state_change>`
  86 - :cpp:member:`Netzone::on_creation <simgrid::s4u::Netzone::on_creation>`
  87   :cpp:member:`Netzone::on_seal <simgrid::s4u::Netzone::on_seal>`
  88   :cpp:member:`Netzone::on_route_creation <simgrid::s4u::Netzone::on_route_creation>`
  89 - :cpp:member:`VirtualMachine::on_start <simgrid::s4u::VirtualMachine::on_start>`
  90   :cpp:member:`VirtualMachine::on_started <simgrid::s4u::VirtualMachine::on_started>`
  91   :cpp:member:`VirtualMachine::on_suspend <simgrid::s4u::VirtualMachine::on_suspend>`
  92   :cpp:member:`VirtualMachine::on_resume <simgrid::s4u::VirtualMachine::on_resume>`
  93   :cpp:member:`VirtualMachine::on_migration_start <simgrid::s4u::VirtualMachine::on_migration_start>`
  94   :cpp:member:`VirtualMachine::on_migration_end <simgrid::s4u::VirtualMachine::on_migration_end>`
  95
  96 Existing Plugins
  97 ****************
  98
  99 Only the major plugins are described here. Please check in src/plugins
 100 to explore the other ones.
 101
 102 .. _plugin_host_energy:
 103
 104 Host Energy Plugin
 105 ==================
 106
 107 .. doxygengroup:: Plugin_host_energy
 108
 109 .. _plugin_link_energy:
 110
 111 Link Energy Plugin
 112 ==================
 113
 114 .. doxygengroup:: Plugin_link_energy
 115
 116 .. _plugin_host_load:
 117
 118 Host Load Plugin
 119 ================
 120
 121 .. doxygengroup:: Plugin_host_load
 122
 123 ..  LocalWords:  SimGrid