-/* Copyright (c) 2006-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2006-2021. 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 Activity {
friend Comm;
friend Exec;
- friend ExecSeq;
- friend ExecPar;
friend Io;
protected:
{
while (not successors_.empty()) {
ActivityPtr b = successors_.back();
- XBT_CDEBUG(s4u_activity, "Remove a dependency from '%s' on '%s'", get_cname(), b->get_cname());
+ XBT_CVERB(s4u_activity, "Remove a dependency from '%s' on '%s'", get_cname(), b->get_cname());
b->dependencies_.erase(this);
if (b->dependencies_.empty()) {
b->vetoable_start();
{
state_ = State::STARTING;
if (dependencies_.empty()) {
- XBT_CDEBUG(s4u_activity, "All dependencies are solved, let's start '%s'", get_cname());
+ XBT_CVERB(s4u_activity, "All dependencies are solved, let's start '%s'", get_cname());
start();
}
}
Activity& operator=(Activity const&) = delete;
#endif
- enum class State { INITED = 0, STARTING, STARTED, CANCELED, ERRORED, FINISHED };
+ enum class State { INITED = 0, STARTING, STARTED, CANCELED, FINISHED };
/** Starts a previously created activity.
*
* This function is optional: you can call wait() even if you didn't call start()
*/
virtual Activity* start() = 0;
- /** Blocks until the activity is terminated */
+ /** Blocks the current actor until the activity is terminated */
virtual Activity* wait() = 0;
- /** Blocks until the activity is terminated, or until the timeout is elapsed
+ /** Blocks the current actor until the activity is terminated, or until the timeout is elapsed\n
* Raises: timeout exception.*/
virtual Activity* wait_for(double timeout) = 0;
- /** Blocks until the activity is terminated, or until the time limit is reached
+ /** Blocks the current actor until the activity is terminated, or until the time limit is reached\n
* Raises: timeout exception. */
void wait_until(double time_limit);
/** Retrieve the current state of the activity */
Activity::State get_state() const { return state_; }
void set_state(Activity::State state) { state_ = state; }
- /** Tests whether the given activity is terminated yet. This is a pure function. */
- virtual bool test() = 0;
+ /** Tests whether the given activity is terminated yet. */
+ virtual bool test();
+
+ /** Blocks the progression of this activity until it gets resumed */
+ virtual Activity* suspend();
+ /** Unblock the progression of this activity if it was suspended previously */
+ virtual Activity* resume();
+ /** Whether or not the progression of this activity is blocked */
+ bool is_suspended() const { return suspended_; }
+
virtual const char* get_cname() const = 0;
virtual const std::string& get_name() const = 0;
kernel::activity::ActivityImplPtr pimpl_ = nullptr;
Activity::State state_ = Activity::State::INITED;
double remains_ = 0;
+ bool suspended_ = false;
std::vector<ActivityPtr> successors_;
std::set<ActivityPtr> dependencies_;
std::atomic_int_fast32_t refcount_{0};