-typedef struct s_smx_rvpoint *msg_mailbox_t;
-/** @brief Mailbox datatype
- @ingroup m_datatypes_management_details @{ */
-
-msg_mailbox_t MSG_mailbox_create(const char *alias);
-void MSG_mailbox_free(void *mailbox);
-
-
-/** @} */
-
-
-/* ***************************** Error handling ***************************** */
-/** @brief Error handling
- @ingroup m_datatypes_management
- @{
-*//* Keep these code as binary values: java bindings manipulate | of these values */
-typedef enum {
- MSG_OK = 0, /**< @brief Everything is right. Keep on going this way ! */
- MSG_TIMEOUT = 1, /**< @brief nothing good happened before the timer you provided elapsed */
- MSG_TRANSFER_FAILURE = 2, /**< @brief There has been a problem during you task
- transfer. Either the network is down or the remote host has been
- shutdown. */
- MSG_HOST_FAILURE = 4, /**< @brief System shutdown. The host on which you are
- running has just been rebooted. Free your datastructures and
- return now !*/
- MSG_TASK_CANCELLED = 8, /**< @brief Canceled task. This task has been canceled by somebody!*/
-} MSG_error_t;
-/** @} */
+ A <em>task</em> may then be defined by a <em>computing
+ amount</em>, a <em>dispatch latency</em> and a <em>collect latency</em>.
+ \see m_task_management
+*/
+typedef struct msg_gpu_task *msg_gpu_task_t;
+/*************** End GPU ***************/
+
+/**
+ * \brief @brief Communication action.
+ * \ingroup msg_task_usage
+ *
+ * Object representing an ongoing communication between processes. Such beast is usually obtained by using #MSG_task_isend, #MSG_task_irecv or friends.
+ */
+typedef struct msg_comm *msg_comm_t;
+
+/** \brief Default value for an uninitialized #msg_task_t.
+ \ingroup m_task_management
+*/
+#define MSG_TASK_UNINITIALIZED NULL
+
+/* ****************************** Process *********************************** */
+
+/** @brief Process datatype.
+ @ingroup m_process_management
+
+ A process may be defined as a <em>code</em>, with some
+ <em>private data</em>, executing in a <em>location</em>.
+
+ You should not access directly to the fields of the pointed
+ structure, but always use the provided API to interact with
+ processes.
+ */
+typedef struct s_smx_process *msg_process_t;
+
+#ifdef MSG_USE_DEPRECATED
+
+/* Compatibility typedefs */
+typedef int m_channel_t;
+typedef msg_gpu_task_t m_gpu_task_t;
+typedef msg_host_t m_host_t;
+typedef msg_process_t m_process_t;
+typedef msg_task_t m_task_t;
+typedef s_msg_gpu_task_t s_m_gpu_task_t;
+typedef s_msg_host_t s_m_host_t;
+typedef s_msg_task_t s_m_task_t;
+#endif