#include <functional>
namespace simgrid::kernel::context {
-extern unsigned stack_size;
-extern unsigned guard_size;
class XBT_PUBLIC ContextFactory {
public:
class XBT_PUBLIC Context {
friend ContextFactory;
+ static int parallel_contexts;
static thread_local Context* current_context_;
std::function<void()> code_;
void declare_context(std::size_t size);
public:
+ static e_xbt_parmap_mode_t parallel_mode;
+ static unsigned stack_size;
+ static unsigned guard_size;
+
static int install_sigsegv_stack(bool enable);
Context(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro);
bool has_code() const { return static_cast<bool>(code_); }
actor::ActorImpl* get_actor() const { return this->actor_; }
+ /** @brief Returns whether some parallel threads are used for the user contexts. */
+ static bool is_parallel() { return parallel_contexts > 1; }
+ /** @brief Returns the number of parallel threads used for the user contexts (1 means no parallelism). */
+ static int get_nthreads() { return parallel_contexts; }
+ /**
+ * @brief Sets the number of parallel threads to use for the user contexts.
+ *
+ * This function should be called before initializing SIMIX.
+ * A value of 1 means no parallelism (1 thread only).
+ * If the value is greater than 1, the thread support must be enabled.
+ * If the value is less than 1, the optimal number of threads is chosen automatically.
+ *
+ * @param nb_threads the number of threads to use
+ */
+ static void set_nthreads(int nb_threads);
+
// Scheduling methods
virtual void stop();
virtual void suspend() = 0;
XBT_PRIVATE ContextFactory* raw_factory();
XBT_PRIVATE ContextFactory* boost_factory();
-XBT_PUBLIC bool is_parallel();
-XBT_PUBLIC int get_nthreads();
-XBT_PUBLIC void set_nthreads(int nb_threads);
-XBT_PUBLIC void set_parallel_mode(e_xbt_parmap_mode_t mode);
-XBT_PUBLIC e_xbt_parmap_mode_t get_parallel_mode();
} // namespace simgrid::kernel::context
#endif