namespace kernel {
namespace context {
-/* rank of the execution thread */
-thread_local uintptr_t SwappedContext::worker_id_; /* thread-specific storage for the thread id */
+/* thread-specific storage for the worker's context */
+thread_local SwappedContext* SwappedContext::worker_context_ = nullptr;
SwappedContextFactory::SwappedContextFactory() : ContextFactory(), parallel_(SIMIX_context_is_parallel())
{
parmap_ = nullptr; // will be created lazily with the right parameters if needed (ie, in parallel)
- workers_context_.resize(parallel_ ? SIMIX_context_get_nthreads() : 1, nullptr);
}
SwappedContext::SwappedContext(std::function<void()>&& code, smx_actor_t actor, SwappedContextFactory* factory)
: Context(std::move(code), actor), factory_(factory)
{
// Save maestro (=context created first) in preparation for run_all
- if (not factory->parallel_ && factory_->workers_context_[0] == nullptr)
- factory_->workers_context_[0] = this;
+ if (not factory->parallel_ && factory->maestro_context_ == nullptr)
+ factory->maestro_context_ = this;
if (has_code()) {
xbt_assert((smx_context_stack_size & 0xf) == 0, "smx_context_stack_size should be multiple of 16");
* for the ones of the simulated processes that must run.
*/
if (parallel_) {
- threads_working_ = 0;
-
// We lazily create the parmap so that all options are actually processed when doing so.
if (parmap_ == nullptr)
parmap_.reset(
void SwappedContext::resume()
{
if (factory_->parallel_) {
- // Save the thread number (my body) in an os-thread-specific area
- worker_id_ = factory_->threads_working_.fetch_add(1, std::memory_order_relaxed);
- // Save my current soul (either maestro, or one of the minions) in a permanent area
- SwappedContext* worker_context = static_cast<SwappedContext*>(self());
- factory_->workers_context_[worker_id_] = worker_context;
+ // Save my current soul (either maestro, or one of the minions) in a thread-specific area
+ worker_context_ = static_cast<SwappedContext*>(self());
// Switch my soul and the actor's one
Context::set_current(this);
- worker_context->swap_into(this);
+ worker_context_->swap_into(this);
// No body runs that soul anymore at this point, but it is stored in a safe place.
// When the executed actor will do a blocking action, ActorImpl::yield() will call suspend(), below.
} else { // sequential execution
} else {
// All actors were run, go back to the parmap context
XBT_DEBUG("No more actors to run");
- // worker_id_ is the identity of my body, stored in thread_local when starting the scheduling round
- next_context = factory_->workers_context_[worker_id_];
+ // worker_context_ is my own soul, stored in thread_local when starting the scheduling round
+ next_context = worker_context_;
// When given that soul, the body will wait for the next scheduling round
}
} else {
/* all processes were run, actually return to maestro */
XBT_DEBUG("No more actors to run");
- next_context = factory_->workers_context_[0];
+ next_context = factory_->maestro_context_;
}
Context::set_current(next_context);
this->swap_into(next_context);