-/* This function is called by maestro at the beginning of a scheduling round to get all working threads executing some stuff
- * It is much easier to understand what happens if you see the working threads as bodies that swap their soul for the
- * ones of the simulated processes that must run.
- */
-void UContextFactory::run_all()
-{
- if (sysv_parallel) {
-#if HAVE_THREAD_CONTEXTS
- sysv_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 smx_ctx_sysv_resume_parallel 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 (sysv_parmap == nullptr)
- sysv_parmap =
- new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
-
- sysv_parmap->apply(
- [](smx_actor_t process) {
- ParallelUContext* context = static_cast<ParallelUContext*>(process->context);
- context->resume();
- },
- simix_global->process_to_run);
-#else
- xbt_die("You asked for a parallel execution, but you don't have any threads.");
-#endif
- } else {
- // Serial:
- if (simix_global->process_to_run.empty())
- return;
-
- smx_actor_t first_process = simix_global->process_to_run.front();
- sysv_process_index = 1;
- SerialUContext* context = static_cast<SerialUContext*>(first_process->context);
- context->resume();
- }
-}
-
-Context* UContextFactory::create_context(std::function<void()> code,
- void_pfn_smxprocess_t cleanup, smx_actor_t process)
-{
- if (sysv_parallel)
- return new_context<ParallelUContext>(std::move(code), cleanup, process);
- else
- return new_context<SerialUContext>(std::move(code), cleanup, process);
-}
-
-UContext::UContext(std::function<void()> code,
- void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
- : Context(std::move(code), cleanup_func, process)
-{
- /* if the user provided a function for the process then use it, otherwise it is the context for maestro */
- if (has_code()) {
- this->stack_ = (char*) SIMIX_context_stack_new();
- getcontext(&this->uc_);
- this->uc_.uc_link = nullptr;
- this->uc_.uc_stack.ss_sp = sg_makecontext_stack_addr(this->stack_);
- this->uc_.uc_stack.ss_size = sg_makecontext_stack_size(smx_context_usable_stack_size);
- simgrid_makecontext(&this->uc_, smx_ctx_sysv_wrapper, this);
- } else {
- if (process != nullptr && sysv_maestro_context == nullptr)
- sysv_maestro_context = this;
- }
-
-#if SIMGRID_HAVE_MC
- if (MC_is_active() && has_code()) {
- MC_register_stack_area(this->stack_, process,
- &(this->uc_), smx_context_usable_stack_size);
- }
-#endif
-}
-
-UContext::~UContext()
-{
- SIMIX_context_stack_delete(this->stack_);
-}
-
-}}} // namespace simgrid::kernel::context
-
-static void smx_ctx_sysv_wrapper(int first, ...)