-#if HAVE_THREAD_CONTEXTS
- // What is my containing body?
- uintptr_t worker_id = __sync_fetch_and_add(&sysv_threads_working, 1);
- // Store the number of my containing body in os-thread-specific area :
- xbt_os_thread_set_specific(sysv_worker_id_key, (void*) worker_id);
- // Get my current soul:
- ParallelUContext* worker_context = static_cast<ParallelUContext*>(SIMIX_context_self());
- // Write down that this soul is hosted in that body (for now)
- sysv_workers_context[worker_id] = worker_context;
- // Retrieve the system-level info that fuels this soul:
- ucontext_t* worker_stack = &worker_context->uc_;
- // Write in simix that I switched my soul
- SIMIX_context_set_current(this);
- // Actually do that using the relevant library call:
- swapcontext(worker_stack, &this->uc_);
- // 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
-#endif
+ threads_working_ = 0;
+ // Parmap_apply ensures that every working thread get an index in the process_to_run array (through an atomic
+ // fetch_and_add), and runs the ParallelUContext::resume function on that index
+
+ // We lazily create the parmap because the parmap creates context with simix_global->context_factory (which might not
+ // be initialized when bootstrapping):
+ if (parmap_ == nullptr)
+ parmap_ = new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
+ parmap_->apply(
+ [](smx_actor_t process) {
+ ParallelUContext* context = static_cast<ParallelUContext*>(process->context_);
+ context->resume();
+ },
+ simix_global->process_to_run);