-/* Copyright (c) 2006-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2006-2022. 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. */
*/
class XBT_PUBLIC Host : public xbt::Extendable<Host> {
#ifndef DOXYGEN
- friend vm::VMModel; // Use the pimpl_cpu to compute the VM sharing
- friend vm::VirtualMachineImpl; // creates the the pimpl_cpu
+ friend kernel::resource::VMModel; // Use the pimpl_cpu to compute the VM sharing
+ friend kernel::resource::VirtualMachineImpl; // creates the the pimpl_cpu
friend kernel::routing::NetZoneImpl;
- friend surf::HostImpl; // call destructor from private implementation
+ friend kernel::resource::HostImpl; // call destructor from private implementation
// The private implementation, that never changes
- surf::HostImpl* const pimpl_;
+ kernel::resource::HostImpl* const pimpl_;
+
+ kernel::resource::CpuImpl* pimpl_cpu_ = nullptr;
+ kernel::routing::NetPoint* pimpl_netpoint_ = nullptr;
public:
- explicit Host(surf::HostImpl* pimpl) : pimpl_(pimpl) {}
+ explicit Host(kernel::resource::HostImpl* pimpl) : pimpl_(pimpl) {}
protected:
virtual ~Host(); // Call destroy() instead of manually deleting it.
Host* set_netpoint(kernel::routing::NetPoint* netpoint);
-#endif
-public:
- /** Called on each newly created host */
static xbt::signal<void(Host&)> on_creation;
- /** Called just before destructing a host */
static xbt::signal<void(Host const&)> on_destruction;
- /** Called when the machine is turned on or off (called AFTER the change) */
+
+public:
+ static xbt::signal<void(Host const&)> on_speed_change;
static xbt::signal<void(Host const&)> on_state_change;
- /** Called when the speed of the machine is changed (called AFTER the change)
+#endif
+ /** Add a callback fired on each newly created host */
+ static void on_creation_cb(const std::function<void(Host&)>& cb) { on_creation.connect(cb); }
+ /** Add a callback fired when the machine is turned on or off (called AFTER the change) */
+ static void on_state_change_cb(const std::function<void(Host const&)>& cb) { on_state_change.connect(cb); }
+ /** Add a callback fired when the speed of the machine is changed (called AFTER the change)
* (either because of a pstate switch or because of an external load event coming from the profile) */
- static xbt::signal<void(Host const&)> on_speed_change;
+ static void on_speed_change_cb(const std::function<void(Host const&)>& cb) { on_speed_change.connect(cb); }
+ /** Add a callback fired just before destructing a host */
+ static void on_destruction_cb(const std::function<void(Host const&)>& cb) { on_destruction.connect(cb); }
virtual void destroy();
#ifndef DOXYGEN
static Host* current();
/** Retrieves the name of that host as a C++ string */
- xbt::string const& get_name() const;
+ std::string const& get_name() const;
/** Retrieves the name of that host as a C string */
const char* get_cname() const;
+ Host* set_cpu(kernel::resource::CpuImpl* cpu);
+ kernel::resource::CpuImpl* get_cpu() const { return pimpl_cpu_; }
kernel::routing::NetPoint* get_netpoint() const { return pimpl_netpoint_; }
+ /**
+ * @brief Callback to set CPU factor
+ *
+ * This callback offers a flexible way to create variability in CPU executions
+ *
+ * @param flops Execution size in flops
+ * @return Multiply factor
+ */
+ using CpuFactorCb = double(double flops);
+ /**
+ * @brief Configure the factor callback to the CPU associated to this host
+ */
+ Host* set_factor_cb(const std::function<CpuFactorCb>& cb);
size_t get_actor_count() const;
std::vector<ActorPtr> get_all_actors() const;
/** @brief Get the peak computing speed in flops/s at the current pstate, NOT taking the external load into account.
*
* The amount of flops per second available for computing depends on several things:
- * - The current pstate determines the maximal peak computing speed (use @ref get_pstate_speed() to retrieve the
- * computing speed you would get at another pstate)
- * - If you declared an external load (with @ref simgrid::surf::Cpu::set_speed_profile()), you must multiply the
- * result of get_speed() by get_available_speed() to retrieve what a new computation would get.
+ * - The current pstate determines the maximal peak computing speed (use
+ * @verbatim embed:rst:inline :cpp:func:`get_pstate_speed() <simgrid::s4u::Host::get_pstate_speed>` @endverbatim
+ * to retrieve the computing speed you would get at another pstate)
+ * - If you declared an external load (with
+ * @verbatim embed:rst:inline :cpp:func:`set_speed_profile() <simgrid::s4u::Host::set_speed_profile>` @endverbatim ),
+ * you must multiply the result of
+ * @verbatim embed:rst:inline :cpp:func:`get_speed() <simgrid::s4u::Host::get_speed>` @endverbatim by
+ * @verbatim embed:rst:inline :cpp:func:`get_available_speed() <simgrid::s4u::Host::get_available_speed>` @endverbatim
+ * to retrieve what a new computation would get.
*
* The remaining speed is then shared between the executions located on this host.
- * You can retrieve the amount of tasks currently running on this host with @ref get_load().
+ * You can retrieve the amount of tasks currently running on this host with
+ * @verbatim embed:rst:inline :cpp:func:`get_load() <simgrid::s4u::Host::get_load>` @endverbatim .
*
* The host may have multiple cores, and your executions may be able to use more than a single core.
*
double get_speed() const;
/** @brief Get the available speed ratio, between 0 and 1.
*
- * This accounts for external load (see @ref simgrid::surf::Cpu::set_speed_profile()).
+ * This accounts for external load (see
+ * @verbatim embed:rst:inline :cpp:func:`set_speed_profile() <simgrid::s4u::Host::set_speed_profile>` @endverbatim ).
*/
double get_available_speed() const;
int get_core_count() const;
Host* set_core_count(int core_count);
+ enum class SharingPolicy { NONLINEAR = 1, LINEAR = 0 };
+ /**
+ * @brief Describes how the CPU is shared between concurrent tasks
+ *
+ * Note that the NONLINEAR callback is in the critical path of the solver, so it should be fast.
+ *
+ * @param policy Sharing policy
+ * @param cb Callback for NONLINEAR policies
+ */
+ Host* set_sharing_policy(SharingPolicy policy, const s4u::NonLinearResourceCb& cb = {});
+ SharingPolicy get_sharing_policy() const;
+
/** Returns the current computation load (in flops per second)
*
* The external load (coming from an availability trace) is not taken in account.
*/
double get_load() const;
- int get_pstate_count() const;
- int get_pstate() const;
- double get_pstate_speed(int pstate_index) const;
- Host* set_pstate(int pstate_index);
+ unsigned long get_pstate_count() const;
+ unsigned long get_pstate() const;
+ double get_pstate_speed(unsigned long pstate_index) const;
+ Host* set_pstate(unsigned long pstate_index);
Host* set_coordinates(const std::string& coords);
std::vector<Disk*> get_disks() const;
void add_disk(const Disk* disk);
void remove_disk(const std::string& disk_name);
+ VirtualMachine* create_vm(const std::string& name, int core_amount);
+ VirtualMachine* create_vm(const std::string& name, int core_amount, size_t ramsize);
+ /** Retrieve a VM running on this host from its name, or return nullptr */
+ VirtualMachine* vm_by_name_or_null(const std::string& name);
+
void route_to(const Host* dest, std::vector<Link*>& links, double* latency) const;
- void route_to(const Host* dest, std::vector<kernel::resource::LinkImpl*>& links, double* latency) const;
+ void route_to(const Host* dest, std::vector<kernel::resource::StandardLinkImpl*>& links, double* latency) const;
/**
* @brief Seal this host
*/
Host* seal();
-#ifndef DOXYGEN
- XBT_ATTRIB_DEPRECATED_v331("Please use Comm::sendto()") void sendto(Host* dest, double byte_amount);
-
- XBT_ATTRIB_DEPRECATED_v331("Please use Comm::sendto_async()") CommPtr sendto_async(Host* dest, double byte_amount);
-
- XBT_ATTRIB_DEPRECATED_v330("Please use Host::sendto()") void send_to(Host* dest, double byte_amount);
-#endif
-
NetZone* get_englobing_zone() const;
/** Block the calling actor on an execution located on the called host
*
/** Block the calling actor on an execution located on the called host (with explicit priority) */
void execute(double flops, double priority) const;
- surf::HostImpl* get_impl() const { return pimpl_; }
-
-private:
- kernel::routing::NetPoint* pimpl_netpoint_ = nullptr;
-
-public:
-#ifndef DOXYGEN
- /** DO NOT USE DIRECTLY (@todo: these should be protected, once our code is clean) */
- kernel::resource::CpuImpl* pimpl_cpu = nullptr;
-#endif
+ kernel::resource::HostImpl* get_impl() const { return pimpl_; }
};
} // namespace s4u
} // namespace simgrid
