1 #ifndef SIMGRID_S4U_TASK_H_
2 #define SIMGRID_S4U_TASK_H_
4 #include <simgrid/s4u/Activity.hpp>
5 #include <simgrid/s4u/Io.hpp>
6 #include <xbt/Extendable.hpp>
14 namespace simgrid::s4u {
17 using TaskPtr = boost::intrusive_ptr<Task>;
18 XBT_PUBLIC void intrusive_ptr_release(Task* o);
19 XBT_PUBLIC void intrusive_ptr_add_ref(Task* o);
21 using ExecTaskPtr = boost::intrusive_ptr<ExecTask>;
23 using CommTaskPtr = boost::intrusive_ptr<CommTask>;
25 using IoTaskPtr = boost::intrusive_ptr<IoTask>;
27 class XBT_PUBLIC Token : public xbt::Extendable<Token> {};
30 std::set<Task*> successors_ = {};
31 std::map<Task*, unsigned int> predecessors_ = {};
33 bool ready_to_run() const;
34 void receive(Task* source);
39 std::shared_ptr<Token> token_ = nullptr;
40 std::deque<std::map<TaskPtr, std::shared_ptr<Token>>> tokens_received_;
41 int queued_execs_ = 0;
43 bool working_ = false;
44 s4u::ActivityPtr previous_activity_;
45 s4u::ActivityPtr current_activity_;
46 xbt::signal<void(Task*)> on_this_start_;
47 xbt::signal<void(Task*)> on_this_end_;
48 explicit Task(const std::string& name);
49 virtual ~Task() = default;
50 virtual void fire() = 0;
53 static xbt::signal<void(Task*)> on_start;
54 static xbt::signal<void(Task*)> on_end;
55 std::atomic_int_fast32_t refcount_{0};
58 const std::string& get_name() const { return name_; }
59 const char* get_cname() const { return name_.c_str(); }
60 void enqueue_execs(int n);
61 void set_amount(double amount);
62 double get_amount() const { return amount_; }
63 void set_token(std::shared_ptr<Token> token);
64 std::shared_ptr<Token> get_next_token_from(TaskPtr t);
65 void add_successor(TaskPtr t);
66 void remove_successor(TaskPtr t);
67 void remove_all_successors();
68 const std::set<Task*>& get_successors() const { return successors_; }
69 void on_this_start_cb(const std::function<void(Task*)>& func);
70 void on_this_end_cb(const std::function<void(Task*)>& func);
71 int get_count() const;
73 /** Add a callback fired before a task activity start.
74 * Triggered after the on_this_start function**/
75 static void on_start_cb(const std::function<void(Task*)>& cb) { on_start.connect(cb); }
76 /** Add a callback fired after a task activity end.
77 * Triggered after the on_this_end function, but before
78 * sending tokens to successors.**/
79 static void on_end_cb(const std::function<void(Task*)>& cb) { on_end.connect(cb); }
82 friend void intrusive_ptr_release(Task* o)
84 if (o->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
85 std::atomic_thread_fence(std::memory_order_acquire);
89 friend void intrusive_ptr_add_ref(Task* o) { o->refcount_.fetch_add(1, std::memory_order_relaxed); }
93 class ExecTask : public Task {
96 explicit ExecTask(const std::string& name);
100 static ExecTaskPtr init(const std::string& name);
101 static ExecTaskPtr init(const std::string& name, double flops, s4u::Host* host);
102 ExecTaskPtr set_host(s4u::Host* host);
103 s4u::Host* get_host() const { return host_; }
104 ExecTaskPtr set_flops(double flops);
105 double get_flops() const { return get_amount(); }
108 class CommTask : public Task {
110 s4u::Host* destination_;
112 explicit CommTask(const std::string& name);
113 void fire() override;
116 static CommTaskPtr init(const std::string& name);
117 static CommTaskPtr init(const std::string& name, double bytes, s4u::Host* source, s4u::Host* destination);
118 CommTaskPtr set_source(s4u::Host* source);
119 s4u::Host* get_source() const { return source_; }
120 CommTaskPtr set_destination(s4u::Host* destination);
121 s4u::Host* get_destination() const { return destination_; }
122 CommTaskPtr set_bytes(double bytes);
123 double get_bytes() const { return get_amount(); }
126 class IoTask : public Task {
128 s4u::Io::OpType type_;
129 explicit IoTask(const std::string& name);
130 void fire() override;
133 static IoTaskPtr init(const std::string& name);
134 static IoTaskPtr init(const std::string& name, double bytes, s4u::Disk* disk, s4u::Io::OpType type);
135 IoTaskPtr set_disk(s4u::Disk* disk);
136 s4u::Disk* get_disk() const { return disk_; }
137 IoTaskPtr set_bytes(double bytes);
138 double get_bytes() const { return get_amount(); }
139 IoTaskPtr set_op_type(s4u::Io::OpType type);
140 s4u::Io::OpType get_op_type() const { return type_; }
142 } // namespace simgrid::s4u