-/** Yield
- *
- * This function is called when a simulated process wants to yield back to the maestro in a blocking simcall. This
- * naturally occurs within SIMIX_context_suspend(self->context), called from SIMIX_process_yield() Actually, it does not
- * really yield back to maestro, but into the next process that must be executed. If no one is to be executed, then it
- * yields to the initial soul that was in this working thread (that was saved in resume_parallel).
- */
-void ParallelUContext::suspend()
-{
- /* determine the next context */
- // Get the next soul to embody now:
- boost::optional<smx_actor_t> next_work = parmap_->next();
- ParallelUContext* next_context;
- if (next_work) {
- // There is a next soul to embody (ie, a next process to resume)
- XBT_DEBUG("Run next process");
- next_context = static_cast<ParallelUContext*>(next_work.get()->context_);
- } else {
- // All processes were run, go to the barrier
- XBT_DEBUG("No more processes to run");
- // worker_id_ is the identity of my body, stored in thread_local when starting the scheduling round
- // Deduce the initial soul of that body
- next_context = workers_context_[worker_id_];
- // When given that soul, the body will wait for the next scheduling round
- }
-
- Context::set_current(next_context);
- // Get the next soul to run, either simulated or initial minion's one:
- this->swap_into(next_context);
-}
-
-/** Run one particular simulated process on the current thread. */
-void ParallelUContext::resume()
-{
- // What is my containing body? Store its number in os-thread-specific area :
- worker_id_ = threads_working_.fetch_add(1, std::memory_order_relaxed);
- // Get my current soul:
- ParallelUContext* worker_context = static_cast<ParallelUContext*>(self());
- // Write down that this soul is hosted in that body (for now)
- workers_context_[worker_id_] = worker_context;
- // Write in simix that I switched my soul
- Context::set_current(this);
- // Actually do that using the relevant library call:
- worker_context->swap_into(this);
- // No body runs that soul anymore at this point. Instead the current body took the soul of simulated process The
- // simulated process wakes back after the call to "SIMIX_context_suspend(self->context);" within
- // smx_process.c::SIMIX_process_yield()
-
- // From now on, the simulated processes will change their soul with the next soul to execute (in suspend_parallel,
- // below). When nobody is to be executed in this scheduling round, the last simulated process will take back the
- // initial soul of the current working thread
-}