X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dbb0053e46341918b4d5ba5ec69ddbd54c01f5de..08eb681376f0a99c445234cc8e4cc9ae2e0b00e5:/docs/source/app_s4u.rst

diff --git a/docs/source/app_s4u.rst b/docs/source/app_s4u.rst
index e422a7045a..cd7d1abea3 100644
--- a/docs/source/app_s4u.rst
+++ b/docs/source/app_s4u.rst
@@ -5,7 +5,7 @@ The S4U Interface
 
 .. raw:: html
 
-   <object id="TOC" data="graphical-toc.svg" width="100%" type="image/svg+xml"></object>
+   <object id="TOC" data="graphical-toc.svg" type="image/svg+xml"></object>
    <script>
    window.onload=function() { // Wait for the SVG to be loaded before changing it
      var elem=document.querySelector("#TOC").contentDocument.getElementById("ActorBox")
@@ -20,15 +20,15 @@ with the full power of C++. This is the preferred interface to describe
 abstract algorithms in the domains of Cloud, P2P, HPC, IoT, and similar
 settings.
 
-Since v3.20 (June 2018), S4U is definitely the way to go for long-term
-projects. It is feature complete, but may still evolve slightly in the
+Since v3.20 (June 2018), S4U is the way to go for long-term
+projects. It is feature complete, but may still evolve slightly in 
 future releases. It can already be used to do everything that can be
 done in SimGrid, but you may have to adapt your code in future
 releases. When this happens, compiling your code will produce
 deprecation warnings for 4 releases (one year) before the removal of
 the old symbols. 
 If you want an API that will never ever evolve in the future, you
-should use the deprecated MSG API instead. 
+should use the :ref:`deprecated MSG API <MSG_doc>` instead. 
 
 Main Concepts
 *************
@@ -39,22 +39,22 @@ S4U interface to express their :ref:`computation <API_s4u_Exec>`,
 :ref:`communication <API_s4u_Comm>`, :ref:`disk usage <API_s4u_Io>`,
 and other |API_s4u_Activities|_, so that they get reflected within the
 simulator. These activities take place on resources such as |API_s4u_Hosts|_,
-|API_s4u_Links|_ and |API_s4u_Disks|_. SimGrid predicts the time taken by each
+|API_s4u_Links|_, and |API_s4u_Disks|_. SimGrid predicts the time taken by each
 activity and orchestrates the actors accordingly, waiting for the
 completion of these activities.
 
 
 When **communicating**, data is not directly sent to other actors but
-posted onto a |API_s4u_Mailbox|_ that serves as a rendez-vous point between
+posted onto a |API_s4u_Mailbox|_ that serves as a rendezvous point between
 communicating actors. This means that you don't need to know who you
 are talking to, you just put your communication `Put` request in a
 mailbox, and it will be matched with a complementary `Get`
 request.  Alternatively, actors can interact through **classical
 synchronization mechanisms** such as |API_s4u_Barrier|_, |API_s4u_Semaphore|_,
-|API_s4u_Mutex|_ and |API_s4u_ConditionVariable|_.
+|API_s4u_Mutex|_, and |API_s4u_ConditionVariable|_.
 
 Each actor is located on a simulated |API_s4u_Host|_. Each host is located
-itself in a |API_s4u_NetZone|_, that knows the networking path between one
+in a |API_s4u_NetZone|_, that knows the networking path between one
 resource to another. Each NetZone is included in another one, forming
 a tree of NetZones which root zone contains the whole platform. The
 actors can also be located on a |API_s4U_VirtualMachine|_ that may
@@ -64,60 +64,60 @@ Virtual machines can also be migrated between hosts.
 The :ref:`simgrid::s4u::this_actor <API_s4u_this_actor>` namespace
 provides many helper functions to simplify the code of actors.
 
-- **Global Classes**
+- **Simulation Elements**
 
-  - :ref:`class s4u::Actor <API_s4u_Actor>`:
+  - :ref:`class Actor <API_s4u_Actor>`:
     Active entities executing your application.
-  - :ref:`class s4u::Engine <API_s4u_Engine>`
+  - :ref:`class Engine <API_s4u_Engine>`
     Simulation engine (singleton).
-  - :ref:`class s4u::Mailbox <API_s4u_Mailbox>`
-    Communication rendez-vous.
+  - :ref:`class Mailbox <API_s4u_Mailbox>`
+    Communication rendezvous, with which actors meet each other.
 
-- **Platform Elements**
+- **Resources**
 
-  - :ref:`class s4u::Disk <API_s4u_Disk>`
+  - :ref:`class Disk <API_s4u_Disk>`
     Resource on which actors can write and read data.
-  - :ref:`class s4u::Host <API_s4u_Host>`:
+  - :ref:`class Host <API_s4u_Host>`:
     Actor location, providing computational power.
-  - :ref:`class s4u::Link <API_s4u_Link>`
+  - :ref:`class Link <API_s4u_Link>`
     Interconnecting hosts.
-  - :ref:`class s4u::NetZone <API_s4u_NetZone>`:
+  - :ref:`class NetZone <API_s4u_NetZone>`:
     Sub-region of the platform, containing resources (Hosts, Links, etc).
-  - :ref:`class s4u::VirtualMachine <API_s4u_VirtualMachine>`:
+  - :ref:`class VirtualMachine <API_s4u_VirtualMachine>`:
     Execution containers that can be moved between Hosts.
 
-- **Activities** (:ref:`class s4u::Activity <API_s4u_Activity>`):
+- **Activities** (:ref:`class Activity <API_s4u_Activity>`):
   The things that actors can do on resources
 
-  - :ref:`class s4u::Comm <API_s4u_Comm>`
+  - :ref:`class Comm <API_s4u_Comm>`
     Communication activity, started on Mailboxes and consuming links.
-  - :ref:`class s4u::Exec <API_s4u_Exec>`
+  - :ref:`class Exec <API_s4u_Exec>`
     Computation activity, started on Host and consuming CPU resources.
-  - :ref:`class s4u::Io <API_s4u_Io>`
-    I/O activity, started on and consumming disks.
+  - :ref:`class Io <API_s4u_Io>`
+    I/O activity, started on and consuming disks.
 
-- **Synchronization Mechanisms**: Classical IPC that actors can use
+- **Synchronization Objects**: Classical IPC that actors can use
 
-  - :ref:`class s4u::Barrier <API_s4u_Barrier>`
-  - :ref:`class s4u::ConditionVariable <API_s4u_ConditionVariable>`
-  - :ref:`class s4u::Mutex <API_s4u_Mutex>`
-  - :ref:`class s4u::Semaphore <API_s4u_Semaphore>`
+  - :ref:`class Barrier <API_s4u_Barrier>`
+  - :ref:`class ConditionVariable <API_s4u_ConditionVariable>`
+  - :ref:`class Mutex <API_s4u_Mutex>`
+  - :ref:`class Semaphore <API_s4u_Semaphore>`
 
 
 .. |API_s4u_Actors| replace:: **Actors**
-.. _API_s4u_Actors: #s4u-actor
+.. _API_s4u_Actors: #api-s4u-actor
 
 .. |API_s4u_Activities| replace:: **Activities**
-.. _API_s4u_Activities: #s4u-activity
+.. _API_s4u_Activities: #api-s4u-activity
 
 .. |API_s4u_Hosts| replace:: **Hosts**
-.. _API_s4u_Hosts: #s4u-host
+.. _API_s4u_Hosts: #api-s4u-host
 
 .. |API_s4u_Links| replace:: **Links**
-.. _API_s4u_Links: #s4u-link
+.. _API_s4u_Links: #api-s4u-link
 
 .. |API_s4u_Disks| replace:: **Disks**
-.. _API_s4u_Disks: #s4u-disk
+.. _API_s4u_Disks: #api-s4u-disk
 
 .. |API_s4u_VirtualMachine| replace:: **VirtualMachines**
 
@@ -138,16 +138,16 @@ provides many helper functions to simplify the code of actors.
 
 .. |API_s4u_Mutex| replace:: **Mutex**
 
-.. THE EXAMPLES
-
-.. include:: ../../examples/s4u/README.rst
+.. _s4u_Activities:
 
 Activities
 **********
 
 Activities represent the actions that consume a resource, such as a
-:ref:`s4u::Comm <API_s4u_Comm>` that consumes the *transmitting power* of
-:ref:`s4u::Link <API_s4u_Link>` resources.
+:ref:`Comm <API_s4u_Comm>` that consumes the *transmitting power* of 
+:ref:`Link <API_s4u_Link>` resources, or an :ref:`Exec <API_s4u_Exec>`
+that consumes the *computing power* of :ref:`Host <API_s4u_Host>` resources.
+See also the :ref:`full API <API_s4u_Activity>` below.
 
 =======================
 Asynchronous Activities
@@ -162,17 +162,13 @@ block the actor during their execution but progress on their own.
 
 Once your asynchronous activity is started, you can test for its
 completion using :cpp:func:`s4u::Activity::test() <simgrid::s4u::Activity::test>`.
-This function returns ``true`` if the activity completed already.
+This function returns ``true`` if the activity is completed already.
 You can also use :cpp:func:`s4u::Activity::wait() <simgrid::s4u::Activity::wait>`
 to block until the completion of the activity. To wait for at most a given amount of time,
 use  :cpp:func:`s4u::Activity::wait_for() <simgrid::s4u::Activity::wait_for>`.
 Finally, to wait at most until a specified time limit, use
 :cpp:func:`s4u::Activity::wait_until() <simgrid::s4u::Activity::wait_until>`.
 
-.. todo::
-
-   wait_for and wait_until are currently not implemented for Exec and Io activities.
-
 Every kind of activity can be asynchronous:
 
   - :ref:`s4u::CommPtr <API_s4u_Comm>` are created with 
@@ -191,7 +187,7 @@ communications ongoing.  First, you have to declare a vector in which
 we will store the ongoing communications. It is also useful to have a
 vector of mailboxes.
 
-.. literalinclude:: ../../examples/s4u/async-waitall/s4u-async-waitall.cpp
+.. literalinclude:: ../../examples/cpp/comm-waitall/s4u-comm-waitall.cpp
    :language: c++
    :start-after: init-begin
    :end-before: init-end
@@ -203,7 +199,7 @@ Finally, the actor waits for the completion of all of them at once
 with 
 :cpp:func:`s4u::Comm::wait_all() <simgrid::s4u::Comm::wait_all>`.  
      
-.. literalinclude:: ../../examples/s4u/async-waitall/s4u-async-waitall.cpp
+.. literalinclude:: ../../examples/cpp/comm-waitall/s4u-comm-waitall.cpp
    :language: c++
    :start-after: put-begin
    :end-before: put-end
@@ -230,14 +226,14 @@ Please also refer to the :ref:`API reference for s4u::Mailbox
 What are Mailboxes?
 ===================
 
-|API_s4u_Mailboxes|_ are rendez-vous points for network communications,
+|API_s4u_Mailboxes|_ are rendezvous points for network communications,
 similar to URLs on which you could post and retrieve data. Actually,
 the mailboxes are not involved in the communication once it starts,
 but only to find the contact with which you want to communicate.
 
 They are similar to many common things: The phone number, which allows
-the caller to find the receiver. The twitter hashtag, which help
-senders and receivers to find each others. In TCP, the pair 
+the caller to find the receiver. The Twitter hashtag, which helps
+senders and receivers to find each other. In TCP, the pair 
 ``{host name, host port}`` to which you can connect to find your peer.
 In HTTP, URLs through which the clients can connect to the servers. 
 In ZeroMQ, the queues are used to match senders and receivers.
@@ -251,25 +247,25 @@ at a given point of time).
 
 A big difference with TCP sockets or MPI communications is that
 communications do not start right away after a
-:cpp:func:`Mailbox::put() <simgrid::s4u::Mailbox::put()>`, but wait
-for the corresponding :cpp:func:`Mailbox::get() <simgrid::s4u::Mailbox::get()>`.
+:cpp:func:`Mailbox::put() <simgrid::s4u::Mailbox::put>`, but wait
+for the corresponding :cpp:func:`Mailbox::get() <simgrid::s4u::Mailbox::get>`.
 You can change this by :ref:`declaring a receiving actor <s4u_receiving_actor>`.
 
-A big difference with twitter hashtags is that SimGrid does not
+A big difference with Twitter hashtags is that SimGrid does not
 offer easy support to broadcast a given message to many
-receivers. So that would be like a twitter tag where each message
+receivers. So that would be like a Twitter tag where each message
 is consumed by the first receiver.
 
 A big difference with the ZeroMQ queues is that you cannot filter
 on the data you want to get from the mailbox. To model such settings
 in SimGrid, you'd have one mailbox per potential topic, and subscribe
 to each topic individually with a 
-:cpp:func:`get_async() <simgrid::s4u::Mailbox::get_async()>` on each mailbox.
-Then, use :cpp:func:`Comm::wait_any() <simgrid::s4u::Comm::wait_any()>` 
-to get the first message on any of the mailbox you are subscribed onto.
+:cpp:func:`get_async() <simgrid::s4u::Mailbox::get_async>` on each mailbox.
+Then, use :cpp:func:`Comm::wait_any() <simgrid::s4u::Comm::wait_any>` 
+to get the first message on any of the mailboxes you are subscribed to.
 
 The mailboxes are not located on the network, and you can access
-them without any latency. The network delay are only related to the
+them without any latency. The network delays are only related to the
 location of the sender and receiver once the match between them is
 done on the mailbox. This is just like the phone number that you
 can use locally, and the geographical distance only comes into play
@@ -280,8 +276,8 @@ How to use Mailboxes?
 =====================
 
 You can retrieve any existing mailbox from its name (which is a
-unique string, just like a twitter tag). This results in a
-versatile mechanism that can be used to build many different
+unique string, just like a Twitter tag). This results in a
+versatile tool that can be used to build many different
 situations.
 
 To model classical socket communications, use "hostname:port" as
@@ -289,11 +285,11 @@ mailbox names, and make sure that only one actor reads into a given
 mailbox. This does not make it easy to build a perfectly realistic
 model of the TCP sockets, but in most cases, this system is too
 cumbersome for your simulations anyway. You probably want something
-simpler, that turns our to be easy to build with the mailboxes.
+simpler, that turns out to be easy to build with the mailboxes.
 
 Many SimGrid examples use a sort of yellow page system where the
 mailbox names are the name of the service (such as "worker",
-"master" or "reducer"). That way, you don't have to know where your
+"master", or "reducer"). That way, you don't have to know where your
 peer is located to contact it. You don't even need its name. Its
 function is enough for that. This also gives you some sort of load
 balancing for free if more than one actor pulls from the mailbox:
@@ -321,7 +317,7 @@ announced (it waits until both :cpp:func:`put() <simgrid::s4u::Mailbox::put()>`
 and :cpp:func:`get() <simgrid::s4u::Mailbox::get()>` are posted). 
 In TCP, since you establish connections beforehand, the data starts to
 flow as soon as the sender posts it, even if the receiver did not post
-its :cpp:func:`recv() <simgrid::s4u::Mailbox::recv()>` yet. 
+its :cpp:func:`put() <simgrid::s4u::Mailbox::put()>` yet. 
 
 To model this in SimGrid, you can declare a specific receiver to a
 given mailbox (with the function 
@@ -333,10 +329,32 @@ posts its :cpp:func:`get() <simgrid::s4u::Mailbox::get()>`
 
 Note that being permanent receivers of a mailbox prevents actors to be
 garbage-collected. If your simulation creates many short-lived actors
-that marked as permanent receiver, you should call
+that are marked as permanent receiver, you should call
 ``mailbox->set_receiver(nullptr)`` by the end of the actors so that their
 memory gets properly reclaimed. This call should be at the end of the
-actor's function, not in a on_exit callback.
+actor's function, not in an on_exit callback.
+
+===============================
+Communicating without Mailboxes
+===============================
+
+Sometimes you don't want to simulate communications between actors as
+allowed by mailboxes, but you want to create a direct communication
+between two arbitrary hosts. This can arise when you write a
+high-level model of a centralized scheduler, or when you model direct
+communications such as one-sided communications in MPI or remote
+memory direct access in PGAS.
+
+For that, :cpp:func:`Comm::sendto() <simgrid::s4u::Comm::sendto()>`
+simulates a direct communication between the two specified hosts. No
+mailbox is used, and there is no rendezvous between actors. You can
+freely mix such direct communications and rendezvous-based
+communications. Alternatively, :cpp:func:`Comm::sendto_init()
+<simgrid::s4u::Comm::sendto_init()>` and
+:cpp:func:`Comm::sendto_async() <simgrid::s4u::Comm::sendto_async()>`
+create asynchronous direct communications.
+
+.. _s4u_raii:
 
 Memory Management
 *****************
@@ -364,321 +382,1917 @@ Here is a little example:
   
    } // The mutex gets automatically freed because the only existing reference gets out of scope
 
-Note that Mailboxes, Hosts and Links are not handled thought smart
+Note that Mailboxes, Hosts, and Links are not handled through smart
 pointers (yet?). This means that it is currently impossible to destroy a
-mailbox or a link. You can still destroy an host (but probably
+mailbox or a link. You can still destroy a host (but probably
 shouldn't), using :cpp:func:`simgrid::s4u::Host::destroy`.
 
-C++ API Reference
-*****************
-
-.. _API_s4u_this_actor:
+.. THE EXAMPLES
 
-=========================
-namespace s4u::this_actor
-=========================
+.. include:: ../../examples/README.rst
 
-.. doxygennamespace:: simgrid::s4u::this_actor
-.. _API_s4u_Activity:
+API Reference
+*************
 
-=============
-s4u::Activity
-=============
+.. _API_s4u_simulation_object:
 
-.. doxygenclass:: simgrid::s4u::Activity
-   :members:
-   :protected-members:
-   :undoc-members:
+==================
+Simulation objects
+==================
 
 .. _API_s4u_Actor:
 
-==========
-s4u::Actor
-==========
+==============
+⁣  class Actor
+==============
 
-.. doxygentypedef:: ActorPtr
+.. doxygenclass:: simgrid::s4u::Actor
 
 .. doxygentypedef:: aid_t
 
-.. doxygenclass:: simgrid::s4u::Actor
-   :members:
-   :protected-members:
-   :undoc-members:
+Basic management
+----------------
 
-.. _API_s4u_Barrier:
+.. tabs::
 
-============
-s4u::Barrier
-============
+   .. group-tab:: C++
 
-.. doxygentypedef:: BarrierPtr
+      .. code:: C++
 
-.. doxygenclass:: simgrid::s4u::Barrier
-   :members:
-   :protected-members:
-   :undoc-members:
+         #include <simgrid/s4u/Actor.hpp>
 
-.. _API_s4u_Comm:
+      .. doxygentypedef:: ActorPtr
 
-=========
-s4u::Comm
-=========
+   .. group-tab:: Python
 
-.. doxygentypedef:: CommPtr
+      .. code:: Python
 
-.. doxygenclass:: simgrid::s4u::Comm
-   :members:
-   :protected-members:
-   :undoc-members:
+         from simgrid import Actor
 
-.. _API_s4u_ConditionVariable:
+      .. autoclass:: simgrid.Actor
 
-======================
-s4u::ConditionVariable
-======================
+   .. group-tab:: C
 
-.. doxygentypedef:: ConditionVariablePtr
+      .. code:: C
 
-.. doxygenclass:: simgrid::s4u::ConditionVariable
-   :members:
-   :protected-members:
-   :undoc-members:
+         #include <simgrid/actor.h>
 
-.. _API_s4u_Disk:
+      .. doxygentypedef:: sg_actor_t
+      .. doxygentypedef:: const_sg_actor_t
+      .. doxygenfunction:: sg_actor_ref
+      .. doxygenfunction:: sg_actor_unref
 
-============
-s4u::Disk
-============
 
-.. doxygenclass:: simgrid::s4u::Disk
-   :members:
-   :protected-members:
-   :undoc-members:
+Creating actors
+---------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Actor::create(const std::string &name, s4u::Host *host, const std::function< void()> &code)
+      .. doxygenfunction:: simgrid::s4u::Actor::create(const std::string &name, s4u::Host *host, F code)
+      .. doxygenfunction:: simgrid::s4u::Actor::create(const std::string &name, s4u::Host *host, F code, Args... args)
+      .. doxygenfunction:: simgrid::s4u::Actor::create(const std::string &name, s4u::Host *host, const std::string &function, std::vector< std::string > args)
+
+      .. doxygenfunction:: simgrid::s4u::Actor::init(const std::string &name, s4u::Host *host)
+      .. doxygenfunction:: simgrid::s4u::Actor::start(const std::function< void()> &code)
+      .. doxygenfunction:: simgrid::s4u::Actor::set_stacksize
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Actor.create
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_create(const char *name, sg_host_t host, xbt_main_func_t code, int argc, char *const *argv)
+      .. doxygenfunction:: sg_actor_init(const char *name, sg_host_t host)
+      .. doxygenfunction:: sg_actor_start(sg_actor_t actor, xbt_main_func_t code, int argc, char *const *argv)
+      .. doxygenfunction:: sg_actor_set_stacksize
+
+      .. doxygenfunction:: sg_actor_attach(const char *name, void *data, sg_host_t host, xbt_dict_t properties)
+      .. doxygenfunction:: sg_actor_detach()
+
+Retrieving actors
+-----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Actor::by_pid(aid_t pid)
+      .. doxygenfunction:: simgrid::s4u::Actor::self()
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Actor.by_pid
+      .. automethod:: simgrid.Actor.self
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_by_pid(aid_t pid)
+      .. doxygenfunction:: sg_actor_self()
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Actor::get_cname
+      .. doxygenfunction:: simgrid::s4u::Actor::get_name
+      .. doxygenfunction:: simgrid::s4u::Actor::get_pid
+      .. doxygenfunction:: simgrid::s4u::Actor::get_ppid
+      .. doxygenfunction:: simgrid::s4u::Actor::get_properties() const
+      .. doxygenfunction:: simgrid::s4u::Actor::get_property(const std::string &key) const
+      .. doxygenfunction:: simgrid::s4u::Actor::set_property(const std::string &key, const std::string &value) 
+
+      .. doxygenfunction:: simgrid::s4u::Actor::get_host
+      .. doxygenfunction:: simgrid::s4u::Actor::set_host
+
+      .. doxygenfunction:: simgrid::s4u::Actor::get_refcount
+      .. doxygenfunction:: simgrid::s4u::Actor::get_impl
+
+   .. group-tab:: Python
+                  
+      .. autoattribute:: simgrid.Actor.name
+      .. autoattribute:: simgrid.Actor.host
+      .. autoattribute:: simgrid.Actor.pid
+      .. autoattribute:: simgrid.Actor.ppid
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_get_name(const_sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_get_pid(const_sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_get_ppid(const_sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_get_properties(const_sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_get_property_value(const_sg_actor_t actor, const char *name)
+
+      .. doxygenfunction:: sg_actor_get_host(const_sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_set_host(sg_actor_t actor, sg_host_t host)
+
+      .. doxygenfunction:: sg_actor_get_data(const_sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_set_data(sg_actor_t actor, void *userdata)
+
+Suspending and resuming actors
+------------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Actor::suspend()
+      .. doxygenfunction:: simgrid::s4u::Actor::resume()
+      .. doxygenfunction:: simgrid::s4u::Actor::is_suspended
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Actor.resume
+      .. automethod:: simgrid.Actor.suspend
+      .. automethod:: simgrid.Actor.is_suspended
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_suspend(sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_resume(sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_is_suspended(const_sg_actor_t actor)
+
+Specifying when actors should terminate
+---------------------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Actor::kill()
+      .. doxygenfunction:: simgrid::s4u::Actor::kill_all()
+      .. doxygenfunction:: simgrid::s4u::Actor::set_kill_time(double time)
+      .. doxygenfunction:: simgrid::s4u::Actor::get_kill_time
+
+      .. doxygenfunction:: simgrid::s4u::Actor::restart()
+      .. doxygenfunction:: simgrid::s4u::Actor::daemonize()
+      .. doxygenfunction:: simgrid::s4u::Actor::is_daemon
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Actor.kill
+      .. automethod:: simgrid.Actor.kill_all
+
+      .. automethod:: simgrid.Actor.daemonize
+      .. automethod:: simgrid.Actor.is_daemon
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_kill(sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_kill_all()
+      .. doxygenfunction:: sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
+
+      .. doxygenfunction:: sg_actor_restart(sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_daemonize(sg_actor_t actor)
+      .. doxygenfunction:: sg_actor_is_daemon
+
+.. _API_s4u_Actor_end:
+
+Reacting to the end of actors
+-----------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Actor::on_exit
+      .. doxygenfunction:: simgrid::s4u::Actor::join() const
+      .. doxygenfunction:: simgrid::s4u::Actor::join(double timeout) const
+      .. doxygenfunction:: simgrid::s4u::Actor::set_auto_restart(bool autorestart)
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Actor.join
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_on_exit
+      .. doxygenfunction:: sg_actor_join(const_sg_actor_t actor, double timeout)
+      .. doxygenfunction:: sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Actor::on_creation
+      .. doxygenvariable:: simgrid::s4u::Actor::on_suspend
+      .. doxygenvariable:: simgrid::s4u::Actor::on_host_change
+      .. doxygenvariable:: simgrid::s4u::Actor::on_resume
+      .. doxygenvariable:: simgrid::s4u::Actor::on_sleep
+      .. doxygenvariable:: simgrid::s4u::Actor::on_wake_up
+      .. doxygenvariable:: simgrid::s4u::Actor::on_termination
+      .. doxygenvariable:: simgrid::s4u::Actor::on_destruction
+
+.. _API_s4u_this_actor:
+
+====================
+⁣  The current actor
+====================
+
+These functions can be used in your user code to interact with the actor
+currently running (the one retrieved with :cpp:func:`simgrid::s4u::Actor::self`).
+Using these functions can greatly improve the code readability.
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::this_actor::get_cname()
+      .. doxygenfunction:: simgrid::s4u::this_actor::get_name()
+      .. doxygenfunction:: simgrid::s4u::this_actor::get_pid()
+      .. doxygenfunction:: simgrid::s4u::this_actor::get_ppid()
+      .. doxygenfunction:: simgrid::s4u::this_actor::is_maestro()
+
+      .. doxygenfunction:: simgrid::s4u::this_actor::get_host()
+      .. doxygenfunction:: simgrid::s4u::this_actor::set_host(Host *new_host)
+
+   .. group-tab:: Python
+
+      .. autofunction:: simgrid.this_actor.get_host
+      .. autofunction:: simgrid.this_actor.set_host
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_self_get_data()
+      .. doxygenfunction:: sg_actor_self_set_data(void *data)
+      .. doxygenfunction:: sg_actor_self_get_name()
+      .. doxygenfunction:: sg_actor_self_get_pid()
+      .. doxygenfunction:: sg_actor_self_get_ppid()
+      .. doxygenfunction:: sg_host_self()
+      .. doxygenfunction:: sg_host_self_get_name()
+
+Suspending and resuming
+-----------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::this_actor::suspend()
+      .. doxygenfunction:: simgrid::s4u::this_actor::yield()
+
+   .. group-tab:: Python
+
+      .. autofunction:: simgrid.this_actor.suspend
+      .. autofunction:: simgrid.this_actor.yield_
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_yield()
+
+Logging messages
+----------------
+
+.. tabs::
+
+   .. group-tab:: Python
+
+       .. autofunction:: simgrid.this_actor.info
+       .. autofunction:: simgrid.this_actor.error
+
+Sleeping
+--------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::this_actor::sleep_for(double duration)
+      .. doxygenfunction:: simgrid::s4u::this_actor::sleep_for(std::chrono::duration< Rep, Period > duration)
+      .. doxygenfunction:: simgrid::s4u::this_actor::sleep_until(const SimulationTimePoint< Duration > &wakeup_time)
+      .. doxygenfunction:: simgrid::s4u::this_actor::sleep_until(double wakeup_time)
+
+   .. group-tab:: Python
+
+      .. autofunction:: simgrid.this_actor.sleep_for
+      .. autofunction:: simgrid.this_actor.sleep_until
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_sleep_for(double duration)
+
+Simulating executions
+---------------------
+
+Simulate the execution of some code on this actor. You can either simulate
+parallel or sequential code and you can either block upon the termination of
+the execution, or start an asynchronous activity.
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::this_actor::exec_async
+      .. doxygenfunction:: simgrid::s4u::this_actor::exec_init(const std::vector< s4u::Host * > &hosts, const std::vector< double > &flops_amounts, const std::vector< double > &bytes_amounts)
+      .. doxygenfunction:: simgrid::s4u::this_actor::exec_init(double flops_amounts)
+      .. doxygenfunction:: simgrid::s4u::this_actor::execute(double flop)
+      .. doxygenfunction:: simgrid::s4u::this_actor::execute(double flop, double priority)
+      .. doxygenfunction:: simgrid::s4u::this_actor::parallel_execute(const std::vector< s4u::Host * > &hosts, const std::vector< double > &flops_amounts, const std::vector< double > &bytes_amounts)
+      .. doxygenfunction:: simgrid::s4u::this_actor::parallel_execute(const std::vector< s4u::Host * > &hosts, const std::vector< double > &flops_amounts, const std::vector< double > &bytes_amounts, double timeout)
+
+   .. group-tab:: Python
+
+      .. autofunction:: simgrid.this_actor.exec_init
+      .. autofunction:: simgrid.this_actor.execute
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_actor_execute(double flops)
+      .. doxygenfunction:: sg_actor_execute_with_priority(double flops, double priority)
+      .. doxygenfunction:: sg_actor_exec_init(double computation_amount)
+      .. doxygenfunction:: sg_actor_exec_async(double computation_amount)
+      .. doxygenfunction:: sg_actor_parallel_exec_init(int host_nb, const sg_host_t* host_list, double* flops_amount, double* bytes_amount);
+
+Exiting
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::this_actor::exit()
+      .. doxygenfunction:: simgrid::s4u::this_actor::on_exit(const std::function< void(bool)> &fun)
+
+   .. group-tab:: Python
+
+      .. autofunction:: simgrid.this_actor.exit
+      .. autofunction:: simgrid.this_actor.on_exit
+
+   .. group-tab:: c
+
+      See also :cpp:func:`sg_actor_on_exit`.
+
+      .. doxygenfunction:: sg_actor_exit
 
 .. _API_s4u_Engine:
 
-===========
-s4u::Engine
-===========
+====================
+⁣  Simulation Engine
+====================
 
 .. doxygenclass:: simgrid::s4u::Engine
-   :members:
-   :protected-members:
-   :undoc-members:
 
-.. _API_s4u_Exec:
+Initialization
+--------------
 
-=========
-s4u::Exec
-=========
+.. tabs::
 
-.. doxygentypedef:: ExecPtr
+   .. group-tab:: C++
 
-.. doxygenclass:: simgrid::s4u::Exec
-   :members:
-   :protected-members:
-   :undoc-members:
+      .. doxygenfunction:: simgrid::s4u::Engine::Engine(int *argc, char **argv)
+      .. doxygenfunction:: simgrid::s4u::Engine::is_initialized()
+      .. doxygenfunction:: simgrid::s4u::Engine::shutdown()
+      .. doxygenfunction:: simgrid::s4u::Engine::set_config(const std::string &str)
+      .. doxygenfunction:: simgrid::s4u::Engine::set_config(const std::string &name, bool value)
+      .. doxygenfunction:: simgrid::s4u::Engine::set_config(const std::string &name, double value)
+      .. doxygenfunction:: simgrid::s4u::Engine::set_config(const std::string &name, int value)
+      .. doxygenfunction:: simgrid::s4u::Engine::set_config(const std::string &name, const std::string &value)
 
-.. _API_s4u_ExecSeq:
+      .. doxygenfunction:: simgrid::s4u::Engine::load_deployment
+      .. doxygenfunction:: simgrid::s4u::Engine::load_platform
+      .. doxygenfunction:: simgrid::s4u::Engine::register_actor(const std::string &name)
+      .. doxygenfunction:: simgrid::s4u::Engine::register_actor(const std::string &name, F code)
+      .. doxygenfunction:: simgrid::s4u::Engine::register_default(const std::function< void(int, char **)> &code)
+      .. doxygenfunction:: simgrid::s4u::Engine::register_default(const kernel::actor::ActorCodeFactory &factory)
 
-============
-s4u::ExecSeq
-============
+      .. doxygenfunction:: simgrid::s4u::Engine::register_function(const std::string &name, const std::function< void(int, char **)> &code)
+      .. doxygenfunction:: simgrid::s4u::Engine::register_function(const std::string &name, const std::function< void(std::vector< std::string >)> &code)
+      .. doxygenfunction:: simgrid::s4u::Engine::register_function(const std::string &name, const kernel::actor::ActorCodeFactory &factory)
 
-.. doxygentypedef:: ExecSeqPtr
+   .. group-tab:: Python
+   
+       .. automethod:: simgrid.Engine.load_deployment
+       .. automethod:: simgrid.Engine.load_platform
+       .. automethod:: simgrid.Engine.register_actor
 
-.. doxygenclass:: simgrid::s4u::ExecSeq
-   :members:
-   :protected-members:
-   :undoc-members:
+   .. group-tab:: C
 
-.. _API_s4u_ExecPar:
+      .. doxygenfunction:: simgrid_init
 
-============
-s4u::ExecPar
-============
+      .. doxygenfunction:: simgrid_load_deployment
+      .. doxygenfunction:: simgrid_load_platform
+      .. doxygenfunction:: simgrid_register_default
+      .. doxygenfunction:: simgrid_register_function
 
-.. doxygentypedef:: ExecParPtr
+Run the simulation
+------------------
 
-.. doxygenclass:: simgrid::s4u::ExecPar
-   :members:
-   :protected-members:
-   :undoc-members:
+.. tabs::
 
-.. _API_s4u_Host:
+   .. group-tab:: C++
 
-=========
-s4u::Host
-=========
+      .. doxygenfunction:: simgrid::s4u::Engine::get_clock()
+      .. doxygenfunction:: simgrid::s4u::Engine::run
 
-.. doxygenclass:: simgrid::s4u::Host
-   :members:
-   :protected-members:
-   :undoc-members:
+   .. group-tab:: Python
+   
+      .. automethod:: simgrid.Engine.get_clock
+      .. automethod:: simgrid.Engine.run
 
-.. _API_s4u_Io:
+   .. group-tab:: C
 
-=======
-s4u::Io
-=======
+      .. doxygenfunction:: simgrid_get_clock
+      .. doxygenfunction:: simgrid_run
 
-.. doxygentypedef:: IoPtr
+Retrieving actors
+-----------------
 
-.. doxygenclass:: simgrid::s4u::Io
-   :members:
-   :protected-members:
-   :undoc-members:
+.. tabs::
 
-.. _API_s4u_Link:
+   .. group-tab:: C++
 
-=========
-s4u::Link
-=========
+      .. doxygenfunction:: simgrid::s4u::Engine::get_actor_count
+      .. doxygenfunction:: simgrid::s4u::Engine::get_all_actors
+      .. doxygenfunction:: simgrid::s4u::Engine::get_filtered_actors
 
-.. doxygenclass:: simgrid::s4u::Link
-   :members:
-   :protected-members:
-   :undoc-members:
+   .. group-tab:: C
+
+      .. doxygenfunction:: simgrid_get_actor_count()
+
+Retrieving hosts
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Engine::get_all_hosts
+      .. doxygenfunction:: simgrid::s4u::Engine::get_host_count
+      .. doxygenfunction:: simgrid::s4u::Engine::get_filtered_hosts
+      .. doxygenfunction:: simgrid::s4u::Engine::host_by_name
+      .. doxygenfunction:: simgrid::s4u::Engine::host_by_name_or_null
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Engine.get_all_hosts
+
+   .. group-tab:: C
+
+      See also :cpp:func:`sg_host_list` and :cpp:func:`sg_host_count`.
+
+Retrieving links
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Engine::get_all_links
+      .. doxygenfunction:: simgrid::s4u::Engine::get_link_count
+      .. doxygenfunction:: simgrid::s4u::Engine::get_filtered_links
+      .. doxygenfunction:: simgrid::s4u::Engine::link_by_name
+      .. doxygenfunction:: simgrid::s4u::Engine::link_by_name_or_null
+
+Interacting with the routing
+----------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Engine::get_all_netpoints
+      .. doxygenfunction:: simgrid::s4u::Engine::get_filtered_netzones
+      .. doxygenfunction:: simgrid::s4u::Engine::get_instance()
+      .. doxygenfunction:: simgrid::s4u::Engine::get_netzone_root
+      .. doxygenfunction:: simgrid::s4u::Engine::netpoint_by_name_or_null
+      .. doxygenfunction:: simgrid::s4u::Engine::netzone_by_name_or_null
+      .. doxygenfunction:: simgrid::s4u::Engine::set_netzone_root(const NetZone *netzone)
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Engine::on_deadlock
+      .. doxygenvariable:: simgrid::s4u::Engine::on_platform_created
+      .. doxygenvariable:: simgrid::s4u::Engine::on_platform_creation
+      .. doxygenvariable:: simgrid::s4u::Engine::on_simulation_end
+      .. doxygenvariable:: simgrid::s4u::Engine::on_time_advance
 
 .. _API_s4u_Mailbox:
 
-============
-s4u::Mailbox
-============
+================
+⁣  class Mailbox
+================
+
+.. doxygenclass:: simgrid::s4u::Mailbox
 
 Please also refer to the :ref:`full doc on s4u::Mailbox <s4u_mailbox>`.
 
-.. doxygenclass:: simgrid::s4u::Mailbox
-   :members:
-   :protected-members:
-   :undoc-members:
+Basic management
+----------------
 
-.. _API_s4u_Mutex:
+.. tabs::
 
-==========
-s4u::Mutex
-==========
+   .. group-tab:: C++
 
-.. doxygentypedef:: MutexPtr
+      .. code-block:: C++
 
-.. doxygenclass:: simgrid::s4u::Mutex
-   :members:
-   :protected-members:
-   :undoc-members:
+         #include <simgrid/s4u/Mailbox.hpp>
 
-.. _API_s4u_NetZone:
+      Note that there is no MailboxPtr type and that you cannot use the RAII
+      idiom on mailboxes because they are internal objects to the simulation
+      engine. Once created, there is no way to destroy a mailbox before the end
+      of the simulation.
+         
+      .. doxygenfunction:: simgrid::s4u::Mailbox::by_name(const std::string &name)
 
-============
-s4u::NetZone
-============
+   .. group-tab:: Python
 
-.. doxygenclass:: simgrid::s4u::NetZone
-   :members:
-   :protected-members:
-   :undoc-members:
+      .. code-block:: C++
 
-.. _API_s4u_Semaphore:
+         #include <simgrid/mailbox.h>
 
-==============
-s4u::Semaphore
-==============
+      .. autoclass:: simgrid.Mailbox
 
-.. doxygentypedef:: SemaphorePtr
+      .. automethod:: simgrid.Mailbox.by_name
 
-.. doxygenclass:: simgrid::s4u::Semaphore
-   :members:
-   :protected-members:
-   :undoc-members:
+   .. group-tab:: C
 
-.. _API_s4u_VirtualMachine:
+      .. code-block:: C
 
-===================
-s4u::VirtualMachine
-===================
+         #include <simgrid/s4u/mailbox.h>
+      
+      .. doxygentypedef:: sg_mailbox_t
+      .. doxygentypedef:: const_sg_mailbox_t
 
-.. doxygenclass:: simgrid::s4u::VirtualMachine
-   :members:
-   :protected-members:
-   :undoc-members:
+      .. doxygenfunction:: sg_mailbox_by_name(const char *alias)
 
-C API Reference
-***************
+Querying info
+-------------
 
-==============
-Main functions
-==============
+.. tabs::
 
-.. doxygenfunction:: simgrid_init
-.. doxygenfunction:: simgrid_get_clock
-.. doxygenfunction:: simgrid_load_deployment
-.. doxygenfunction:: simgrid_load_platform
-.. doxygenfunction:: simgrid_register_default
-.. doxygenfunction:: simgrid_register_function
-.. doxygenfunction:: simgrid_run
+   .. group-tab:: C++
 
-==================
-Condition Variable
-==================
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get_cname
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get_name
 
-See also the :ref:`C++ API <API_s4u_ConditionVariable>`.
+   .. group-tab:: Python
 
-.. doxygenfunction:: sg_cond_init
-.. doxygenfunction:: sg_cond_notify_all
-.. doxygenfunction:: sg_cond_notify_one
-.. doxygenfunction:: sg_cond_wait
-.. doxygenfunction:: sg_cond_wait_for
+      .. autoattribute:: simgrid.Mailbox.name
 
-Python API Reference
-********************
+Sending data
+------------
 
-The Python API is automatically generated with pybind11. It closely mimicks the C++
-API, to which you should refer for more information.
+.. tabs::
 
-==========
-this_actor
-==========
+   .. group-tab:: C++
 
-.. automodule:: simgrid.this_actor
-   :members:
+      .. doxygenfunction:: simgrid::s4u::Mailbox::put(void *payload, uint64_t simulated_size_in_bytes)
+      .. doxygenfunction:: simgrid::s4u::Mailbox::put(void *payload, uint64_t simulated_size_in_bytes, double timeout)
+      .. doxygenfunction:: simgrid::s4u::Mailbox::put_async(void *data, uint64_t simulated_size_in_bytes)
+      .. doxygenfunction:: simgrid::s4u::Mailbox::put_init()
+      .. doxygenfunction:: simgrid::s4u::Mailbox::put_init(void *data, uint64_t simulated_size_in_bytes)
 
-===========
-Class Actor
-===========
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Mailbox.put
+      .. automethod:: simgrid.Mailbox.put_async
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_mailbox_put(sg_mailbox_t mailbox, void *payload, long simulated_size_in_bytes)
+      .. doxygenfunction:: sg_mailbox_put_init(sg_mailbox_t mailbox, void *payload, long simulated_size_in_bytes)
+      .. doxygenfunction:: sg_mailbox_put_async(sg_mailbox_t mailbox, void *payload, long simulated_size_in_bytes)
+
+
+Receiving data
+--------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Mailbox::empty
+      .. doxygenfunction:: simgrid::s4u::Mailbox::front
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get()
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get(double timeout)
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get_async(T **data)
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get_init()
+      .. doxygenfunction:: simgrid::s4u::Mailbox::iprobe(int type, bool(*match_fun)(void *, void *, kernel::activity::CommImpl *), void *data)
+      .. doxygenfunction:: simgrid::s4u::Mailbox::listen
+      .. doxygenfunction:: simgrid::s4u::Mailbox::ready
+
+   .. group-tab:: Python
+
+       .. automethod:: simgrid.Mailbox.get
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_mailbox_get(sg_mailbox_t mailbox)
+      .. doxygenfunction:: sg_mailbox_get_async(sg_mailbox_t mailbox, void **data)
+      .. doxygenfunction:: sg_mailbox_get_name(const_sg_mailbox_t mailbox)
+      .. doxygenfunction:: sg_mailbox_listen(const char *alias)
+
+Receiving actor
+---------------
+
+See :ref:`s4u_receiving_actor`.
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Mailbox::get_receiver
+      .. doxygenfunction:: simgrid::s4u::Mailbox::set_receiver(ActorPtr actor)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_mailbox_set_receiver(const char *alias)
+                  
+.. _API_s4u_Resource:
+
+=========
+Resources
+=========
+
+.. _API_s4u_Disk:
+
+=============
+⁣  class Disk
+=============
+
+.. doxygenclass:: simgrid::s4u::Disk
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Disk.hpp>
 
-.. autoclass:: simgrid.Actor
-   :members:
+      Note that there is no DiskPtr type and that you cannot use the RAII
+      idiom on disks because SimGrid does not allow (yet) to create nor
+      destroy resources once the simulation is started. 
+         
 
-==========
-Class Comm
-==========
+Querying info
+-------------
 
-.. autoclass:: simgrid.Comm
-   :members:
+.. tabs::
 
-============
-Class Engine
-============
+   .. group-tab:: C++
 
-.. autoclass:: simgrid.Engine
-   :members:
+      .. doxygenfunction:: simgrid::s4u::Disk::get_cname() const
+      .. doxygenfunction:: simgrid::s4u::Disk::get_host() const
+      .. doxygenfunction:: simgrid::s4u::Disk::get_name() const
+      .. doxygenfunction:: simgrid::s4u::Disk::get_properties() const
+      .. doxygenfunction:: simgrid::s4u::Disk::get_property(const std::string &key) const
+      .. doxygenfunction:: simgrid::s4u::Disk::get_read_bandwidth() const
+      .. doxygenfunction:: simgrid::s4u::Disk::get_write_bandwidth() const
+      .. doxygenfunction:: simgrid::s4u::Disk::set_property(const std::string &, const std::string &value)
 
-==========
-Class Exec
-==========
+I/O operations
+--------------
 
-.. autoclass:: simgrid.Exec
-   :members:
+.. tabs::
 
-==========
-Class Host
-==========
+   .. group-tab:: C++
 
-.. autoclass:: simgrid.Host
-   :members:
+      .. doxygenfunction:: simgrid::s4u::Disk::io_init(sg_size_t size, s4u::Io::OpType type) const
+      .. doxygenfunction:: simgrid::s4u::Disk::read(sg_size_t size) const
+      .. doxygenfunction:: simgrid::s4u::Disk::read_async(sg_size_t size) const
+      .. doxygenfunction:: simgrid::s4u::Disk::write(sg_size_t size) const
+      .. doxygenfunction:: simgrid::s4u::Disk::write_async(sg_size_t size) const
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Disk::on_creation
+      .. doxygenvariable:: simgrid::s4u::Disk::on_destruction
+      .. doxygenvariable:: simgrid::s4u::Disk::on_state_change
+
+
+.. _API_s4u_Host:
 
 =============
-Class Mailbox
+⁣  class Host
 =============
 
-.. autoclass:: simgrid.Mailbox
-   :members:
+.. doxygenclass:: simgrid::s4u::Host
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Host.hpp>
+
+      Note that there is no HostPtr type, and that you cannot use the RAII
+      idiom on hosts because SimGrid does not allow (yet) to create nor
+      destroy resources once the simulation is started. 
+
+      .. doxygenfunction:: simgrid::s4u::Host::destroy()
+
+   .. group-tab:: Python
+
+      .. code:: Python
+
+         from simgrid import Host
+
+   .. group-tab:: C
+
+      .. code:: C
+
+         #include <simgrid/host.h>
+
+      .. doxygentypedef:: sg_host_t
+      .. cpp:type:: const s4u_Host* const_sg_host_t
+
+         Pointer to a constant host object.
+
+Retrieving hosts
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      See also :cpp:func:`simgrid::s4u::Engine::get_all_hosts`.
+
+      .. doxygenfunction:: simgrid::s4u::Host::by_name(const std::string &name)
+      .. doxygenfunction:: simgrid::s4u::Host::by_name_or_null(const std::string &name)
+      .. doxygenfunction:: simgrid::s4u::Host::current()
+
+   .. group-tab:: Python
+
+      See also :py:func:`simgrid.Engine.get_all_hosts`.
+
+      .. automethod:: simgrid.Host.by_name
+      .. automethod:: simgrid.Host.current
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_by_name(const char *name)
+      .. doxygenfunction:: sg_host_count()
+      .. doxygenfunction:: sg_host_list()
+      .. doxygenfunction:: sg_hosts_as_dynar()
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::get_cname() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_core_count() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_name() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_available_speed() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_load() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_speed() const
+
+   .. group-tab:: Python
+
+      .. autoattribute:: simgrid.Host.name
+      .. autoattribute:: simgrid.Host.load
+      .. autoattribute:: simgrid.Host.pstate
+      .. autoattribute:: simgrid.Host.speed
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_core_count(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_dump(const_sg_host_t ws)
+      .. doxygenfunction:: sg_host_get_name(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_get_load(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_get_speed(const_sg_host_t host)
+
+User data and properties
+------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::get_properties() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_property(const std::string &key) const
+      .. doxygenfunction:: simgrid::s4u::Host::set_properties(const std::unordered_map< std::string, std::string > &properties)
+      .. doxygenfunction:: simgrid::s4u::Host::set_property(const std::string &key, const std::string &value)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_set_property_value(sg_host_t host, const char *name, const char *value)
+      .. doxygenfunction:: sg_host_get_properties(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_get_property_value(const_sg_host_t host, const char *name)
+      .. doxygenfunction:: sg_host_extension_create(void(*deleter)(void *))
+      .. doxygenfunction:: sg_host_extension_get(const_sg_host_t host, size_t rank)
+
+Retrieving components
+---------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::add_disk(const Disk *disk)
+      .. doxygenfunction:: simgrid::s4u::Host::get_actor_count() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_all_actors() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_disks() const
+      .. doxygenfunction:: simgrid::s4u::Host::remove_disk(const std::string &disk_name)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_get_actor_list(const_sg_host_t host, xbt_dynar_t whereto)
+
+On/Off
+------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::is_on() const
+      .. doxygenfunction:: simgrid::s4u::Host::turn_off()
+      .. doxygenfunction:: simgrid::s4u::Host::turn_on()
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_is_on(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_turn_off(sg_host_t host)
+      .. doxygenfunction:: sg_host_turn_on(sg_host_t host)
+
+DVFS
+----
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::get_pstate() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_pstate_count() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_pstate_speed(int pstate_index) const
+      .. doxygenfunction:: simgrid::s4u::Host::set_pstate(int pstate_index)
+      .. doxygenfunction:: simgrid::s4u::Host::set_speed_profile(kernel::profile::Profile *p)
+      .. doxygenfunction:: simgrid::s4u::Host::set_state_profile(kernel::profile::Profile *p)
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Host.get_pstate_count
+      .. automethod:: simgrid.Host.get_pstate_speed
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_get_available_speed(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_get_nb_pstates(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_get_pstate(const_sg_host_t host)
+      .. doxygenfunction:: sg_host_get_pstate_speed(const_sg_host_t host, int pstate_index)
+      .. doxygenfunction:: sg_host_set_pstate(sg_host_t host, int pstate)
+
+Execution
+---------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::exec_async
+      .. doxygenfunction:: simgrid::s4u::Host::execute(double flops) const
+      .. doxygenfunction:: simgrid::s4u::Host::execute(double flops, double priority) const
+
+Platform and routing
+--------------------
+
+You can also start direct communications between two arbitrary hosts
+using :cpp:func:`Comm::sendto() <simgrid::s4u::Comm::sendto()>`.
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Host::get_englobing_zone() const
+      .. doxygenfunction:: simgrid::s4u::Host::get_netpoint() const
+      .. doxygenfunction:: simgrid::s4u::Host::route_to(const Host *dest, std::vector< Link * > &links, double *latency) const
+      .. doxygenfunction:: simgrid::s4u::Host::route_to(const Host *dest, std::vector< kernel::resource::LinkImpl * > &links, double *latency) const
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_host_get_route(const_sg_host_t from, const_sg_host_t to, xbt_dynar_t links)
+      .. doxygenfunction:: sg_host_get_route_bandwidth(const_sg_host_t from, const_sg_host_t to)
+      .. doxygenfunction:: sg_host_get_route_latency(const_sg_host_t from, const_sg_host_t to)
+      .. doxygenfunction:: sg_host_sendto(sg_host_t from, sg_host_t to, double byte_amount)
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Host::on_creation
+      .. doxygenvariable:: simgrid::s4u::Host::on_destruction
+      .. doxygenvariable:: simgrid::s4u::Host::on_speed_change
+      .. doxygenvariable:: simgrid::s4u::Host::on_state_change
+
+.. _API_s4u_Link:
+
+=============
+⁣  class Link
+=============
+
+.. doxygenclass:: simgrid::s4u::Link
+.. doxygenclass:: simgrid::s4u::SplitDuplexLink
+.. doxygenclass:: simgrid::s4u::LinkInRoute
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Link.hpp>
+
+      Note that there is no LinkPtr type and that you cannot use the RAII
+      idiom on hosts because SimGrid does not allow (yet) to create nor
+      destroy resources once the simulation is started. 
+
+   .. group-tab:: Python
+
+      .. code:: Python
+
+         from simgrid import Link
+
+   .. group-tab:: C
+
+      .. code:: C
+
+         #include <simgrid/link.h>
+
+      .. doxygentypedef:: sg_link_t
+      .. cpp:type:: const s4u_Link* const_sg_link_t
+
+         Pointer to a constant link object.
+
+Retrieving links
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      See also :cpp:func:`simgrid::s4u::Engine::get_all_links`.
+
+      .. doxygenfunction:: simgrid::s4u::Link::by_name(const std::string &name)
+      .. doxygenfunction:: simgrid::s4u::Link::by_name_or_null(const std::string &name)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_link_by_name(const char *name)
+      .. doxygenfunction:: sg_link_count()
+      .. doxygenfunction:: sg_link_list()
+
+Querying info
+--------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Link::get_bandwidth() const
+      .. doxygenfunction:: simgrid::s4u::Link::get_cname() const
+      .. doxygenfunction:: simgrid::s4u::Link::get_latency() const
+      .. doxygenfunction:: simgrid::s4u::Link::get_name() const
+      .. doxygenfunction:: simgrid::s4u::Link::get_sharing_policy() const
+      .. doxygenfunction:: simgrid::s4u::Link::get_usage() const
+      .. doxygenfunction:: simgrid::s4u::Link::is_used() const
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_link_get_bandwidth(const_sg_link_t link)
+      .. doxygenfunction:: sg_link_get_latency(const_sg_link_t link)
+      .. doxygenfunction:: sg_link_get_name(const_sg_link_t link)
+      .. doxygenfunction:: sg_link_is_shared(const_sg_link_t link)
+
+Modifying characteristics
+-------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Link::set_bandwidth(double value)
+      .. doxygenfunction:: simgrid::s4u::Link::set_latency(double value)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_link_set_bandwidth(sg_link_t link, double value)
+      .. doxygenfunction:: sg_link_set_latency(sg_link_t link, double value)
+
+User data and properties
+------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Link::get_property(const std::string &key) const
+      .. doxygenfunction:: simgrid::s4u::Link::set_property(const std::string &key, const std::string &value)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_link_get_data(const_sg_link_t link)
+      .. doxygenfunction:: sg_link_set_data(sg_link_t link, void *data)
+
+On/Off
+------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      See also :cpp:func:`simgrid::s4u::Link::set_state_profile`.
+
+      .. doxygenfunction:: simgrid::s4u::Link::is_on() const
+      .. doxygenfunction:: simgrid::s4u::Link::turn_off()
+      .. doxygenfunction:: simgrid::s4u::Link::turn_on()
+
+Dynamic profiles
+----------------
+
+See :ref:`howto_churn` for more details.
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Link::set_bandwidth_profile(kernel::profile::Profile *profile)
+      .. doxygenfunction:: simgrid::s4u::Link::set_latency_profile(kernel::profile::Profile *profile)
+      .. doxygenfunction:: simgrid::s4u::Link::set_state_profile(kernel::profile::Profile *profile)
+
+WIFI links
+----------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Link::set_host_wifi_rate
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Link::on_bandwidth_change
+      .. doxygenvariable:: simgrid::s4u::Link::on_communicate
+      .. doxygenvariable:: simgrid::s4u::Link::on_communication_state_change
+      .. doxygenvariable:: simgrid::s4u::Link::on_creation
+      .. doxygenvariable:: simgrid::s4u::Link::on_destruction
+      .. doxygenvariable:: simgrid::s4u::Link::on_state_change
+
+.. _API_s4u_NetZone:
+
+================
+⁣  class NetZone
+================
+
+.. doxygenclass:: simgrid::s4u::NetZone
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/NetZone.hpp>
+
+      Note that there is no NetZonePtr type and that you cannot use the RAII
+      idiom on network zones because SimGrid does not allow (yet) to create nor
+      destroy resources once the simulation is started. 
+
+   .. group-tab:: C
+
+      .. code:: C
+
+         #include <simgrid/zone.h>
+
+      .. doxygentypedef:: sg_netzone_t
+      .. cpp:type:: const s4u_NetZone* const_sg_netzone_t
+
+         Pointer to a constant network zone object.
+
+Retrieving zones
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      See :cpp:func:`simgrid::s4u::Engine::get_netzone_root`,
+      :cpp:func:`simgrid::s4u::Engine::netzone_by_name_or_null` and
+      :cpp:func:`simgrid::s4u::Engine::get_filtered_netzones`.
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_zone_get_by_name(const char *name)
+      .. doxygenfunction:: sg_zone_get_root()
+
+Querying info
+--------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_cname() const
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_name() const
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_zone_get_name(const_sg_netzone_t zone)
+
+User data and properties
+------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_properties() const
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_property(const std::string &key) const
+      .. doxygenfunction:: simgrid::s4u::NetZone::set_property(const std::string &key, const std::string &value)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_zone_get_property_value(const_sg_netzone_t as, const char *name)
+      .. doxygenfunction:: sg_zone_set_property_value(sg_netzone_t netzone, const char *name, const char *value)
+
+Retrieving components
+---------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_all_hosts() const
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_host_count() const
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_zone_get_hosts(const_sg_netzone_t zone, xbt_dynar_t whereto)
+
+Routing data
+------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::NetZone::add_component(kernel::routing::NetPoint *elm)
+      .. doxygenfunction:: simgrid::s4u::NetZone::add_route
+      .. doxygenfunction:: simgrid::s4u::NetZone::add_bypass_route
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_children() const
+      .. doxygenfunction:: simgrid::s4u::NetZone::get_parent() const
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_zone_get_sons(const_sg_netzone_t zone, xbt_dict_t whereto)
+
+Signals
+-------
+
+.. tabs::
+
+  .. group-tab:: C++
+
+     .. doxygenvariable:: simgrid::s4u::NetZone::on_creation
+     .. doxygenvariable:: simgrid::s4u::NetZone::on_seal
+
+.. _API_s4u_VirtualMachine:
+
+=======================
+⁣  class VirtualMachine
+=======================
+
+
+.. doxygenclass:: simgrid::s4u::VirtualMachine
+
+Basic management
+----------------
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/VirtualMachine.hpp>
+
+      Note that there is no VirtualMachinePtr type, and that you cannot use the RAII
+      idiom on virtual machines. There is no good reason for that and should change in the future.
+
+   .. group-tab:: C
+
+      .. code:: C
+
+         #include <simgrid/vm.h>
+
+      .. doxygentypedef:: sg_vm_t
+      .. cpp:type:: const s4u_VirtualMachine* const_sg_vm_t
+
+         Pointer to a constant virtual machine object.
+
+Creating VMs
+------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::VirtualMachine(const std::string &name, Host *physical_host, int core_amount)
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::VirtualMachine(const std::string &name, Host *physical_host, int core_amount, size_t ramsize)
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::destroy
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_vm_create_core
+      .. doxygenfunction:: sg_vm_create_multicore
+      .. doxygenfunction:: sg_vm_destroy
+
+Querying info
+--------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::get_pm() const
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::get_ramsize() const
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::get_state() const
+
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::set_bound(double bound)
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::set_pm(Host *pm)
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::set_ramsize(size_t ramsize)
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_vm_get_ramsize(const_sg_vm_t vm)
+      .. doxygenfunction:: sg_vm_set_bound(sg_vm_t vm, double bound)
+      .. doxygenfunction:: sg_vm_set_ramsize(sg_vm_t vm, size_t size)
+
+      .. doxygenfunction:: sg_vm_get_name
+      .. doxygenfunction:: sg_vm_get_pm
+      .. doxygenfunction:: sg_vm_is_created
+      .. doxygenfunction:: sg_vm_is_running
+      .. doxygenfunction:: sg_vm_is_suspended
+
+Life cycle
+----------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::resume()
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::shutdown()
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::start()
+      .. doxygenfunction:: simgrid::s4u::VirtualMachine::suspend()
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_vm_start
+      .. doxygenfunction:: sg_vm_suspend
+      .. doxygenfunction:: sg_vm_resume
+      .. doxygenfunction:: sg_vm_shutdown
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_migration_end
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_migration_start
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_resume
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_shutdown
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_start
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_started
+      .. doxygenvariable:: simgrid::s4u::VirtualMachine::on_suspend
+
+.. _API_s4u_Activity:
+
+==============
+class Activity
+==============
+
+.. doxygenclass:: simgrid::s4u::Activity
+
+**Known subclasses:**
+:ref:`Communications <API_s4u_Comm>` (started on Mailboxes and consuming links),
+:ref:`Executions <API_s4u_Exec>` (started on Host and consuming CPU resources)
+:ref:`I/O <API_s4u_Io>` (started on and consumming disks).
+See also the :ref:`section on activities <s4u_Activities>` above.
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Activity.hpp>
+
+      .. doxygentypedef:: ActivityPtr
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Activity::get_cname
+      .. doxygenfunction:: simgrid::s4u::Activity::get_name
+      .. doxygenfunction:: simgrid::s4u::Activity::get_remaining() const
+      .. doxygenfunction:: simgrid::s4u::Activity::get_state() const
+      .. doxygenfunction:: simgrid::s4u::Activity::set_remaining(double remains)
+      .. doxygenfunction:: simgrid::s4u::Activity::set_state(Activity::State state)
+
+
+Activities life cycle
+---------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Activity::start
+      .. doxygenfunction:: simgrid::s4u::Activity::cancel
+      .. doxygenfunction:: simgrid::s4u::Activity::test
+      .. doxygenfunction:: simgrid::s4u::Activity::wait
+      .. doxygenfunction:: simgrid::s4u::Activity::wait_for
+      .. doxygenfunction:: simgrid::s4u::Activity::wait_until(double time_limit)
+      .. doxygenfunction:: simgrid::s4u::Activity::vetoable_start()
+
+Suspending and resuming an activity
+-----------------------------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Activity::suspend
+      .. doxygenfunction:: simgrid::s4u::Activity::resume
+      .. doxygenfunction:: simgrid::s4u::Activity::is_suspended
+
+.. _API_s4u_Comm:
+
+=============
+⁣  class Comm
+=============
+
+.. doxygenclass:: simgrid::s4u::Comm
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Comm.hpp>
+
+      .. doxygentypedef:: CommPtr
+
+   .. group-tab:: Python
+
+      .. code:: Python
+
+         from simgrid import Comm
+
+      .. autoclass:: simgrid.Comm
+
+   .. group-tab:: c
+
+      .. code:: c
+
+         #include <simgrid/comm.h>
+
+      .. doxygentypedef:: sg_comm_t
+      .. doxygentypedef:: const_sg_comm_t
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Comm::get_dst_data_size() const
+      .. doxygenfunction:: simgrid::s4u::Comm::get_mailbox() const
+      .. doxygenfunction:: simgrid::s4u::Comm::get_sender() const
+      .. doxygenfunction:: simgrid::s4u::Comm::set_dst_data(void **buff)
+      .. doxygenfunction:: simgrid::s4u::Comm::set_dst_data(void **buff, size_t size)
+      .. doxygenfunction:: simgrid::s4u::Comm::detach()
+      .. doxygenfunction:: simgrid::s4u::Comm::detach(void(*clean_function)(void *))
+      .. doxygenfunction:: simgrid::s4u::Comm::set_payload_size(double bytes)
+      .. doxygenfunction:: simgrid::s4u::Comm::set_rate(double rate)
+      .. doxygenfunction:: simgrid::s4u::Comm::set_src_data(void *buff)
+      .. doxygenfunction:: simgrid::s4u::Comm::set_src_data(void *buff, size_t size)
+      .. doxygenfunction:: simgrid::s4u::Comm::set_src_data_size(size_t size)
+
+Life cycle
+----------
+
+Most communications are created using :ref:`s4u_mailbox`, but you can
+also start direct communications as shown below.
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Comm::sendto
+      .. doxygenfunction:: simgrid::s4u::Comm::sendto_init
+      .. doxygenfunction:: simgrid::s4u::Comm::sendto_async
+      
+      .. doxygenfunction:: simgrid::s4u::Comm::cancel
+      .. doxygenfunction:: simgrid::s4u::Comm::start
+      .. doxygenfunction:: simgrid::s4u::Comm::test
+      .. doxygenfunction:: simgrid::s4u::Comm::test_any(const std::vector< CommPtr >& comms)
+      .. doxygenfunction:: simgrid::s4u::Comm::wait
+      .. doxygenfunction:: simgrid::s4u::Comm::wait_all(const std::vector< CommPtr >& comms)
+      .. doxygenfunction:: simgrid::s4u::Comm::wait_all_for(const std::vector< CommPtr >& comms, double timeout)
+      .. doxygenfunction:: simgrid::s4u::Comm::wait_any(const std::vector< CommPtr >& comms)
+      .. doxygenfunction:: simgrid::s4u::Comm::wait_any_for(const std::vector< CommPtr >& comms, double timeout)
+      .. doxygenfunction:: simgrid::s4u::Comm::wait_for
+
+   .. group-tab:: Python
+
+      .. automethod:: simgrid.Comm.test
+      .. automethod:: simgrid.Comm.wait
+      .. automethod:: simgrid.Comm.wait_all
+      .. automethod:: simgrid.Comm.wait_any
+
+   .. group-tab:: C
+
+      .. doxygenfunction:: sg_comm_test
+      .. doxygenfunction:: sg_comm_wait
+      .. doxygenfunction:: sg_comm_wait_all
+      .. doxygenfunction:: sg_comm_wait_any
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Comm::on_completion
+      .. doxygenvariable:: simgrid::s4u::Comm::on_start
+
+.. _API_s4u_Exec:
+
+=============
+⁣  class Exec
+=============
+
+.. doxygenclass:: simgrid::s4u::Exec
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Exec.hpp>
+
+      .. doxygentypedef:: ExecPtr
+
+   .. group-tab:: Python
+
+      .. code:: Python
+
+         from simgrid import Exec
+
+      .. autoclass:: simgrid.Exec
+
+   .. group-tab:: C
+
+      .. code-block:: C
+
+         #include <simgrid/exec.h>
+
+      .. doxygentypedef:: sg_exec_t
+      .. doxygentypedef:: const_sg_exec_t
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Exec::get_cost() const
+      .. doxygenfunction:: simgrid::s4u::Exec::get_finish_time() const
+      .. doxygenfunction:: simgrid::s4u::Exec::get_host() const
+      .. doxygenfunction:: simgrid::s4u::Exec::get_host_number() const
+      .. doxygenfunction:: simgrid::s4u::Exec::get_remaining
+      .. doxygenfunction:: simgrid::s4u::Exec::get_remaining_ratio
+      .. doxygenfunction:: simgrid::s4u::Exec::get_start_time() const
+      .. doxygenfunction:: simgrid::s4u::Exec::set_bound(double bound)
+      .. doxygenfunction:: simgrid::s4u::Exec::set_host
+      .. doxygenfunction:: simgrid::s4u::Exec::set_priority(double priority)
+
+   .. group-tab:: Python
+
+      .. autoattribute:: simgrid.Exec.host
+      .. autoattribute:: simgrid.Exec.remaining
+      .. autoattribute:: simgrid.Exec.remaining_ratio
+
+   .. group-tab:: C
+   
+      .. doxygenfunction:: sg_exec_set_bound(sg_exec_t exec, double bound)
+      .. doxygenfunction:: sg_exec_get_name(const_sg_exec_t exec)
+      .. doxygenfunction:: sg_exec_set_name(sg_exec_t exec, const char* name)
+      .. doxygenfunction:: sg_exec_set_host(sg_exec_t exec, sg_host_t new_host)
+      .. doxygenfunction:: sg_exec_get_remaining(const_sg_exec_t exec)
+      .. doxygenfunction:: sg_exec_get_remaining_ratio(const_sg_exec_t exec)
+
+Life cycle
+----------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Exec::cancel
+      .. doxygenfunction:: simgrid::s4u::Exec::start
+      .. doxygenfunction:: simgrid::s4u::Exec::test
+      .. doxygenfunction:: simgrid::s4u::Exec::wait
+      .. doxygenfunction:: simgrid::s4u::Exec::wait_any(const std::vector< ExecPtr >& execs)
+      .. doxygenfunction:: simgrid::s4u::Exec::wait_any_for(const std::vector< ExecPtr >& execs, double timeout)
+      .. doxygenfunction:: simgrid::s4u::Exec::wait_for
+
+   .. group-tab:: Python
+
+       .. automethod:: simgrid.Exec.cancel
+       .. automethod:: simgrid.Exec.start
+       .. automethod:: simgrid.Exec.test
+       .. automethod:: simgrid.Exec.wait
+
+   .. group-tab:: C
+   
+       .. doxygenfunction:: sg_exec_start(sg_exec_t exec)
+       .. doxygenfunction:: sg_exec_cancel(sg_exec_t exec);
+       .. doxygenfunction:: sg_exec_test(sg_exec_t exec);
+       .. doxygenfunction:: sg_exec_wait(sg_exec_t exec);
+       .. doxygenfunction:: sg_exec_wait_for(sg_exec_t exec, double timeout);
+       .. doxygenfunction:: sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout);
+       .. doxygenfunction:: sg_exec_wait_any(sg_exec_t* execs, size_t count);
+
+Signals
+-------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenvariable:: simgrid::s4u::Exec::on_start
+      .. doxygenvariable:: simgrid::s4u::Exec::on_completion
+
+.. _API_s4u_Io:
+
+===========
+⁣  class Io
+===========
+
+.. doxygenclass:: simgrid::s4u::Io
+
+Basic management
+----------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Io.hpp>
+
+      .. doxygentypedef:: IoPtr
+
+Querying info
+-------------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Io::get_performed_ioops() const
+      .. doxygenfunction:: simgrid::s4u::Io::get_remaining
+
+Life cycle
+----------
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. doxygenfunction:: simgrid::s4u::Io::cancel
+      .. doxygenfunction:: simgrid::s4u::Io::start
+      .. doxygenfunction:: simgrid::s4u::Io::test
+      .. doxygenfunction:: simgrid::s4u::Io::wait
+      .. doxygenfunction:: simgrid::s4u::Io::wait_for
+
+.. _API_s4u_Synchronizations:
+
+=======================
+Synchronization Objects
+=======================
+
+.. _API_s4u_Mutex:
+
+==============
+⁣  Mutex
+==============
+
+.. doxygenclass:: simgrid::s4u::Mutex
+
+Basic management
+----------------
+
+   .. tabs::
+
+      .. group-tab:: C++
+
+         .. code-block:: C++
+
+            #include <simgrid/s4u/Mutex.hpp>
+
+         .. doxygentypedef:: MutexPtr
+
+         .. doxygenfunction:: simgrid::s4u::Mutex::create()
+
+      .. group-tab:: C
+
+         .. code-block:: C
+
+            #include <simgrid/mutex.h>
+
+         .. doxygentypedef:: sg_mutex_t
+         .. cpp:type:: const s4u_Mutex* const_sg_mutex_t
+
+            Pointer to a constant mutex object.
+
+         .. doxygenfunction:: sg_mutex_init()
+         .. doxygenfunction:: sg_mutex_destroy(const_sg_mutex_t mutex)
+
+Locking
+-------
+
+   .. tabs::
+
+      .. group-tab:: C++
+
+         .. doxygenfunction:: simgrid::s4u::Mutex::lock()
+         .. doxygenfunction:: simgrid::s4u::Mutex::try_lock()
+         .. doxygenfunction:: simgrid::s4u::Mutex::unlock()
+
+      .. group-tab:: C
+
+         .. doxygenfunction:: sg_mutex_lock(sg_mutex_t mutex)
+         .. doxygenfunction:: sg_mutex_try_lock(sg_mutex_t mutex)
+         .. doxygenfunction:: sg_mutex_unlock(sg_mutex_t mutex)
+
+.. _API_s4u_Barrier:
+
+================
+⁣  Barrier
+================
+
+.. doxygenclass:: simgrid::s4u::Barrier
+
+.. tabs::
+
+   .. group-tab:: C++
+
+      .. code-block:: C++
+
+         #include <simgrid/s4u/Barrier.hpp>
+
+      .. doxygentypedef:: BarrierPtr
+
+      .. doxygenfunction:: simgrid::s4u::Barrier::Barrier(unsigned int expected_actors)
+      .. doxygenfunction:: simgrid::s4u::Barrier::create(unsigned int expected_actors)
+      .. doxygenfunction:: simgrid::s4u::Barrier::wait()
+
+   .. group-tab:: C
+
+      .. code-block:: C
+
+         #include <simgrid/barrier.hpp>
+
+      .. doxygentypedef:: sg_bar_t
+      .. cpp:type:: const s4u_Barrier* const_sg_bar_t
+
+         Pointer to a constant barrier object.
+
+      .. doxygenfunction:: sg_barrier_init(unsigned int count)
+      .. doxygenfunction:: sg_barrier_destroy(const_sg_bar_t bar)
+      .. doxygenfunction:: sg_barrier_wait(sg_bar_t bar)
+
+
+.. _API_s4u_ConditionVariable:
+
+==========================
+⁣  Condition variable
+==========================
+
+.. doxygenclass:: simgrid::s4u::ConditionVariable
+
+Basic management
+----------------
+
+   .. tabs::
+
+      .. group-tab:: C++
+
+         .. code-block:: C++
+
+            #include <simgrid/s4u/ConditionVariable.hpp>
+
+         .. doxygentypedef:: ConditionVariablePtr
+
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::create()
+
+      .. group-tab:: C
+
+         .. code-block:: C
+
+            #include <simgrid/cond.h>
+
+         .. doxygentypedef:: sg_cond_t
+         .. doxygentypedef:: const_sg_cond_t
+         .. doxygenfunction:: sg_cond_init
+         .. doxygenfunction:: sg_cond_destroy
+
+Waiting and notifying
+---------------------
+
+   .. tabs::
+
+      .. group-tab:: C++
+
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::notify_all()
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::notify_one()
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait(s4u::MutexPtr lock)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait(const std::unique_lock< s4u::Mutex > &lock)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait(const std::unique_lock< Mutex > &lock, P pred)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_for(const std::unique_lock< s4u::Mutex > &lock, double duration)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_for(const std::unique_lock< s4u::Mutex > &lock, double duration, P pred)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_for(const std::unique_lock< s4u::Mutex > &lock, std::chrono::duration< Rep, Period > duration)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_for(const std::unique_lock< s4u::Mutex > &lock, std::chrono::duration< Rep, Period > duration, P pred)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_until(const std::unique_lock< s4u::Mutex > &lock, const SimulationTimePoint< Duration > &timeout_time)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_until(const std::unique_lock< s4u::Mutex > &lock, const SimulationTimePoint< Duration > &timeout_time, P pred)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_until(const std::unique_lock< s4u::Mutex > &lock, double timeout_time)
+         .. doxygenfunction:: simgrid::s4u::ConditionVariable::wait_until(const std::unique_lock< s4u::Mutex > &lock, double timeout_time, P pred)
+
+      .. group-tab:: C
+
+         .. doxygenfunction:: sg_cond_notify_all
+         .. doxygenfunction:: sg_cond_notify_one
+         .. doxygenfunction:: sg_cond_wait
+         .. doxygenfunction:: sg_cond_wait_for
+
+.. _API_s4u_Semaphore:
+
+==================
+⁣  Semaphore
+==================
+
+.. doxygenclass:: simgrid::s4u::Semaphore
+
+
+Basic management
+----------------
+
+   .. tabs::
+
+      .. group-tab:: C++
+
+         .. code-block:: C++
+
+            #include <simgrid/s4u/Semaphore.hpp>
+
+         .. doxygentypedef:: SemaphorePtr
+         .. doxygenfunction:: simgrid::s4u::Semaphore::create(unsigned int initial_capacity)
+
+      .. group-tab:: C
+
+         .. code-block:: C
+
+            #include <simgrid/semaphore.h>
+
+         .. doxygentypedef:: sg_sem_t
+         .. cpp:type:: const s4u_Semaphore* const_sg_sem_t
+
+            Pointer to a constant semaphore object.
+
+         .. doxygenfunction:: sg_sem_init(int initial_value)
+         .. doxygenfunction:: sg_sem_destroy(const_sg_sem_t sem)
+
+Locking
+-------
+
+   .. tabs::
+
+      .. group-tab:: C++
+
+         .. doxygenfunction:: simgrid::s4u::Semaphore::acquire()
+         .. doxygenfunction:: simgrid::s4u::Semaphore::acquire_timeout(double timeout)
+         .. doxygenfunction:: simgrid::s4u::Semaphore::get_capacity() const
+         .. doxygenfunction:: simgrid::s4u::Semaphore::release()
+         .. doxygenfunction:: simgrid::s4u::Semaphore::would_block() const
+
+      .. group-tab:: C
+
+         .. doxygenfunction:: sg_sem_acquire(sg_sem_t sem)
+         .. doxygenfunction:: sg_sem_acquire_timeout(sg_sem_t sem, double timeout)
+         .. doxygenfunction:: sg_sem_get_capacity(const_sg_sem_t sem)
+         .. doxygenfunction:: sg_sem_release(sg_sem_t sem)
+         .. doxygenfunction:: sg_sem_would_block(const_sg_sem_t sem)
+
+.. |hr| raw:: html
+
+   <hr />