X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/ba9a4cfeba4eb00e84cd17603fc9654e81445655..cabfcca7cb25b7aa54d7ee1b0a8b117940b85a8d:/include/simgrid/s4u/mailbox.hpp

diff --git a/include/simgrid/s4u/mailbox.hpp b/include/simgrid/s4u/mailbox.hpp
index 98e968f861..88f9b9856d 100644
--- a/include/simgrid/s4u/mailbox.hpp
+++ b/include/simgrid/s4u/mailbox.hpp
@@ -6,9 +6,12 @@
 #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>
 
@@ -24,26 +27,50 @@ namespace s4u {
  */
 XBT_PUBLIC_CLASS Mailbox {
   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 inferior_; }
+  smx_mailbox_t getImpl() { return pimpl_; }
 
 public:
+
+  // 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 Mailbox *byName(const char *name);
+  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);
 
-private:
-  std::string name_;
-  smx_rdv_t inferior_;
-  static boost::unordered_map<std::string, Mailbox *> *mailboxes;
+  /** 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 */