namespace kernel {
namespace context {
-/* Parallel execution */
-simgrid::xbt::Parmap<smx_actor_t>* SwappedContext::parmap_;
-std::atomic<uintptr_t> SwappedContext::threads_working_; /* number of threads that have started their work */
+/* rank of the execution thread */
thread_local uintptr_t SwappedContext::worker_id_; /* thread-specific storage for the thread id */
-std::vector<SwappedContext*> SwappedContext::workers_context_; /* space to save the worker's context in each thread */
SwappedContextFactory::SwappedContextFactory(std::string name)
: ContextFactory(name), parallel_(SIMIX_context_is_parallel())
{
SwappedContext::set_maestro(nullptr);
- SwappedContext::initialize(parallel_);
-}
-SwappedContextFactory::~SwappedContextFactory()
-{
- SwappedContext::finalize();
-}
-
-void SwappedContext::initialize(bool parallel)
-{
parmap_ = nullptr; // will be created lazily with the right parameters if needed (ie, in parallel)
- if (parallel) {
+ if (parallel_) {
workers_context_.clear();
workers_context_.resize(SIMIX_context_get_nthreads(), nullptr);
}
}
-
-void SwappedContext::finalize()
+SwappedContextFactory::~SwappedContextFactory()
{
delete parmap_;
parmap_ = nullptr;
* for the ones of the simulated processes that must run.
*/
if (parallel_) {
- SwappedContext::threads_working_ = 0;
+ threads_working_ = 0;
// We lazily create the parmap so that all options are actually processed when doing so.
- if (SwappedContext::parmap_ == nullptr)
- SwappedContext::parmap_ =
- new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
+ if (parmap_ == nullptr)
+ parmap_ = new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
// Usually, Parmap::apply() executes the provided function on all elements of the array.
// Here, the executed function does not return the control to the parmap before all the array is processed:
// the control to the parmap. Instead, it uses parmap_->next() to steal another work, and does it directly.
// It only yields back to worker_context when the work array is exhausted.
// - So, resume() is only launched from the parmap for the first job of each minion.
- SwappedContext::parmap_->apply(
+ parmap_->apply(
[](smx_actor_t process) {
SwappedContext* context = static_cast<SwappedContext*>(process->context_);
context->resume();
{
if (factory_->parallel_) {
// Save the thread number (my body) in an os-thread-specific area
- worker_id_ = threads_working_.fetch_add(1, std::memory_order_relaxed);
+ 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());
- workers_context_[worker_id_] = worker_context;
+ factory_->workers_context_[worker_id_] = worker_context;
// Switch my soul and the actor's one
Context::set_current(this);
worker_context->swap_into(this);
{
if (factory_->parallel_) {
// Get some more work to directly swap into the next executable actor instead of yielding back to the parmap
- boost::optional<smx_actor_t> next_work = parmap_->next();
+ boost::optional<smx_actor_t> next_work = factory_->parmap_->next();
SwappedContext* next_context;
if (next_work) {
// There is a next soul to embody (ie, another executable actor)
// All actors were run, go back to the parmap context
XBT_DEBUG("No more processes to run");
// worker_id_ is the identity of my body, stored in thread_local when starting the scheduling round
- next_context = workers_context_[worker_id_];
+ next_context = factory_->workers_context_[worker_id_];
// When given that soul, the body will wait for the next scheduling round
}
~SwappedContextFactory() override;
void run_all() override;
-protected:
+private:
bool parallel_;
-private:
unsigned long process_index_ = 0; // Next actor to execute during sequential run_all()
+
+ /* For the parallel execution */
+ simgrid::xbt::Parmap<smx_actor_t>* parmap_;
+ std::vector<SwappedContext*> workers_context_; /* space to save the worker's context in each thread */
+ std::atomic<uintptr_t> threads_working_; /* number of threads that have started their work */
};
class SwappedContext : public Context {
SwappedContextFactory* factory);
virtual ~SwappedContext();
- static void initialize(bool parallel); // Initialize the module, using the options
- static void finalize(); // Finalize the module
-
void suspend() override;
virtual void resume();
void stop() override;
- virtual void swap_into(SwappedContext* to) = 0; // Defined in subclasses
+ virtual void swap_into(SwappedContext* to) = 0; // Defined in Raw, Boost and UContext subclasses
static SwappedContext* get_maestro() { return maestro_context_; }
static void set_maestro(SwappedContext* maestro) { maestro_context_ = maestro; }
- /* For the parallel execution */ // FIXME killme
- static simgrid::xbt::Parmap<smx_actor_t>* parmap_;
- static std::vector<SwappedContext*> workers_context_;
- static std::atomic<uintptr_t> threads_working_;
+ // FIXME: Killme
static thread_local uintptr_t worker_id_;
protected:
private:
static SwappedContext* maestro_context_;
- /* For sequential and parallel run_all() */
- SwappedContextFactory* factory_;
+ SwappedContextFactory* factory_; // for sequential and parallel run_all()
};
} // namespace context
