X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8f70c6820d3aaba14dd571edc1906a35ecad0fd0..6721094a6e5bc535c446266801f713c9e99ac968:/include/simgrid/s4u/Link.hpp
diff --git a/include/simgrid/s4u/Link.hpp b/include/simgrid/s4u/Link.hpp
index 4f1075e010..2195c694dd 100644
--- a/include/simgrid/s4u/Link.hpp
+++ b/include/simgrid/s4u/Link.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2004-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2004-2023. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
@@ -31,20 +31,23 @@ namespace s4u {
*/
class XBT_PUBLIC Link : public xbt::Extendable {
#ifndef DOXYGEN
- friend kernel::resource::LinkImpl;
+ friend kernel::resource::StandardLinkImpl;
#endif
protected:
// Links are created from the NetZone, and destroyed by their private implementation when the simulation ends
- explicit Link(kernel::resource::LinkImplIntf* pimpl) : pimpl_(pimpl) {}
+ explicit Link(kernel::resource::LinkImpl* pimpl) : pimpl_(pimpl) {}
virtual ~Link() = default;
// The implementation that never changes
- kernel::resource::LinkImplIntf* const pimpl_;
+ kernel::resource::LinkImpl* const pimpl_;
+#ifndef DOXYGEN
+ friend kernel::resource::NetworkAction; // signal comm_state_changed
+#endif
public:
- enum class SharingPolicy { WIFI = 3, SPLITDUPLEX = 2, SHARED = 1, FATPIPE = 0 };
+ enum class SharingPolicy { NONLINEAR = 4, WIFI = 3, SPLITDUPLEX = 2, SHARED = 1, FATPIPE = 0 };
- kernel::resource::LinkImpl* get_impl() const;
+ kernel::resource::StandardLinkImpl* get_impl() const;
/** @brief Retrieve a link from its name */
static Link* by_name(const std::string& name);
@@ -78,8 +81,11 @@ public:
*/
Link* set_latency(const std::string& value);
- /** @brief Describes how the link is shared between flows */
- Link* set_sharing_policy(SharingPolicy policy);
+ /** @brief Describes how the link is shared between flows
+ *
+ * Note that the NONLINEAR callback is in the critical path of the solver, so it should be fast.
+ */
+ Link* set_sharing_policy(SharingPolicy policy, const NonLinearResourceCb& cb = {});
SharingPolicy get_sharing_policy() const;
/** Setup the profile with states events (ON or OFF). The profile must contain boolean values. */
@@ -105,6 +111,7 @@ public:
* @param limit Number of concurrent flows
*/
Link* set_concurrency_limit(int limit);
+ int get_concurrency_limit() const;
/** @brief Set the level of communication speed of the given host on this wifi link.
*
@@ -116,7 +123,10 @@ public:
* current function to specify that a given host uses another level of bandwidth. This can be used to take the
* location of hosts into account, or even to model mobility in your SimGrid simulation.
*
- * Note that this function asserts that the link is actually a wifi link */
+ * Note that this function asserts that the link is actually a wifi link
+ *
+ * warning: in the case where a 0Mbps data rate should be used, set that rate only once during the
+ * experiment, and don't modify the bandwidth of that host later */
void set_host_wifi_rate(const s4u::Host* host, int level) const;
/** @brief Returns the current load (in bytes per second) */
@@ -128,31 +138,41 @@ public:
/** @brief Check if the Link is shared (not a FATPIPE) */
bool is_shared() const;
+ /** Turns the link on. */
void turn_on();
+ /** Turns the link off. */
void turn_off();
+ /** Checks whether the link is on. */
bool is_on() const;
Link* seal();
- /* The signals */
- /** @brief Callback signal fired when a new Link is created */
+private:
+#ifndef DOXYGEN
static xbt::signal on_creation;
-
- /** @brief Callback signal fired when a Link is destroyed */
- static xbt::signal on_destruction;
-
- /** @brief Callback signal fired when the state of a Link changes (when it is turned on or off) */
static xbt::signal on_state_change;
-
- /** @brief Callback signal fired when the bandwidth of a Link changes */
static xbt::signal on_bandwidth_change;
-
- /** @brief Callback signal fired when a communication starts */
- static xbt::signal on_communicate;
-
- /** @brief Callback signal fired when a communication changes it state (ready/done/cancel) */
static xbt::signal
on_communication_state_change;
+ static xbt::signal on_destruction;
+#endif
+
+public:
+ /* The signals */
+ /** @brief Add a callback fired when a new Link is created */
+ static void on_creation_cb(const std::function& cb) { on_creation.connect(cb); }
+ /** @brief Add a callback fired when the state of a Link changes (when it is turned on or off) */
+ static void on_state_change_cb(const std::function& cb) { on_state_change.connect(cb); }
+ /** @brief Add a callback fired when the bandwidth of a Link changes */
+ static void on_bandwidth_change_cb(const std::function& cb) { on_bandwidth_change.connect(cb); }
+ /** @brief Add a callback fired when a communication changes it state (ready/done/cancel) */
+ static void on_communication_state_change_cb(
+ const std::function& cb)
+ {
+ on_communication_state_change.connect(cb);
+ }
+ /** @brief Add a callback fired when a Link is destroyed */
+ static void on_destruction_cb(const std::function& cb) { on_destruction.connect(cb); }
};
/**
@@ -164,7 +184,7 @@ public:
*/
class XBT_PUBLIC SplitDuplexLink : public Link {
public:
- explicit SplitDuplexLink(kernel::resource::LinkImplIntf* pimpl) : Link(pimpl) {}
+ explicit SplitDuplexLink(kernel::resource::LinkImpl* pimpl) : Link(pimpl) {}
/** @brief Get the link direction up*/
Link* get_link_up() const;
/** @brief Get the link direction down */
@@ -176,12 +196,12 @@ public:
/**
* @beginrst
- * Another encapsulation for using links in the :cpp:function:: NetZone::add_route
+ * Another encapsulation for using links in the :cpp:func:`NetZone::add_route`
*
* When adding a route with split-duplex links, you need to specify the direction of the link
* so SimGrid can know exactly which physical link to insert in the route.
*
- * For shared/fat-pipe links, use the Direction::NONE since they don't have
+ * For shared/fat-pipe links, use the :cpp:enumerator:`Direction::NONE` since they don't have
* the concept of UP/DOWN links.
* @endrst
*/
@@ -189,7 +209,7 @@ class XBT_PUBLIC LinkInRoute {
public:
enum class Direction { UP = 2, DOWN = 1, NONE = 0 };
- LinkInRoute(const Link* link) : link_(link) {}
+ explicit LinkInRoute(const Link* link) : link_(link) {}
LinkInRoute(const Link* link, Direction d) : link_(link), direction_(d) {}
/** @brief Get direction of this link in the route: UP or DOWN */