#ifndef SIMGRID_S4U_MAILBOX_HPP
#define SIMGRID_S4U_MAILBOX_HPP
-#include <boost/unordered_map.hpp>
+#include <string>
+
+#include <boost/intrusive_ptr.hpp>
#include <xbt/base.h>
+
+#include <simgrid/s4u/forward.hpp>
#include <simgrid/s4u/actor.hpp>
namespace simgrid {
namespace s4u {
-class Comm;
-
/** @brief Mailboxes
*
* Rendez-vous point for network communications, similar to URLs on which you could post and retrieve data.
* sender and receiver.
*/
XBT_PUBLIC_CLASS Mailbox {
- friend Comm;
+ friend Comm;
+ friend simgrid::s4u::Engine;
+ friend simgrid::simix::Mailbox;
+
+ smx_mailbox_t pimpl_;
+
+ Mailbox(smx_mailbox_t mbox): pimpl_(mbox) {}
-private:
- Mailbox(const char*name, smx_rdv_t inferior);
-public:
- ~Mailbox();
-
protected:
- smx_rdv_t getInferior() { return p_inferior; }
+ smx_mailbox_t getImpl() { return pimpl_; }
public:
- /** Get the name of that mailbox */
- const char *getName();
- /** Retrieve the mailbox associated to the given string */
- static Mailbox *byName(const char *name);
-
-private:
- std::string p_name;
- smx_rdv_t p_inferior;
- static boost::unordered_map<std::string, Mailbox *> *mailboxes;
+
+ // We don't have to manage the lifetime of mailboxes:
+ friend void intrusive_ptr_add_ref(Mailbox*) {}
+ friend void intrusive_ptr_release(Mailbox*) {}
+ using Ptr = boost::intrusive_ptr<Mailbox>;
+
+ /** Get the name of that mailbox */
+ const char *getName();
+
+ /** Retrieve the mailbox associated to the given string */
+ static Ptr byName(const char *name);
+
+ /** Returns whether the mailbox contains queued communications */
+ bool empty();
+
+ /** Declare that the specified process is a permanent receiver on that mailbox
+ *
+ * It means that the communications sent to this mailbox will start flowing to its host even before he does a recv().
+ * This models the real behavior of TCP and MPI communications, amongst other.
+ */
+ void setReceiver(Actor* process);
+
+ /** Return the process declared as permanent receiver, or nullptr if none **/
+ ActorPtr receiver();
};
+
+using MailboxPtr = Mailbox::Ptr;
+
}} // namespace simgrid::s4u
+XBT_PUBLIC(sg_mbox_t) sg_mbox_by_name(const char*name);
+XBT_PUBLIC(int) sg_mbox_is_empty(sg_mbox_t mbox);
+XBT_PUBLIC(void)sg_mbox_setReceiver(sg_mbox_t mbox, smx_process_t process);
+XBT_PUBLIC(smx_process_t) sg_mbox_receiver(sg_mbox_t mbox);
+
#endif /* SIMGRID_S4U_MAILBOX_HPP */
