- if (i < simix_global->process_to_run.size()) {
- /* execute the next process */
- XBT_DEBUG("Run next process");
- next_context = static_cast<SerialUContext*>(simix_global->process_to_run[i]->context);
- } else {
- /* all processes were run, return to maestro */
- XBT_DEBUG("No more process to run");
- next_context = static_cast<SerialUContext*>(sysv_maestro_context);
- }
- SIMIX_context_set_current(next_context);
- swapcontext(&this->uc_, &next_context->uc_);
-}
-
-// UContextSerial
-
-void SerialUContext::resume()
-{
- SIMIX_context_set_current(this);
- swapcontext(&static_cast<SerialUContext*>(sysv_maestro_context)->uc_, &this->uc_);
-}
-
-/** Run one particular simulated process on the current thread. */
-void ParallelUContext::resume()
-{
-#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
-}
-
-/** 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()