+/******************************* Host Requests ********************************/
+/* FIXME: use handlers and keep smx_host_t hidden from higher levels */
+XBT_PUBLIC(xbt_dict_t) SIMIX_req_host_get_dict(void);
+XBT_INLINE XBT_PUBLIC(smx_host_t) SIMIX_req_host_get_by_name(const char *name);
+XBT_PUBLIC(const char *) SIMIX_req_host_get_name(smx_host_t host);
+XBT_PUBLIC(xbt_dict_t) SIMIX_req_host_get_properties(smx_host_t host);
+XBT_PUBLIC(double) SIMIX_req_host_get_speed(smx_host_t host);
+XBT_PUBLIC(double) SIMIX_req_host_get_available_speed(smx_host_t host);
+/* Two possible states, 1 - CPU ON and 0 CPU OFF */
+XBT_PUBLIC(int) SIMIX_req_host_get_state(smx_host_t host);
+XBT_PUBLIC(void *) SIMIX_req_host_get_data(smx_host_t host);
+
+XBT_PUBLIC(void) SIMIX_req_host_set_data(smx_host_t host, void *data);
+
+XBT_PUBLIC(smx_action_t) SIMIX_req_host_execute(const char *name, smx_host_t host,
+ double computation_amount);
+XBT_PUBLIC(smx_action_t) SIMIX_req_host_parallel_execute(const char *name,
+ int host_nb,
+ smx_host_t *host_list,
+ double *computation_amount,
+ double *communication_amount,
+ double amount,
+ double rate);
+XBT_PUBLIC(void) SIMIX_req_host_execution_destroy(smx_action_t execution);
+XBT_PUBLIC(void) SIMIX_req_host_execution_cancel(smx_action_t execution);
+XBT_PUBLIC(double) SIMIX_req_host_execution_get_remains(smx_action_t execution);
+XBT_PUBLIC(e_smx_state_t) SIMIX_req_host_execution_get_state(smx_action_t execution);
+XBT_PUBLIC(void) SIMIX_req_host_execution_set_priority(smx_action_t execution, double priority);
+XBT_PUBLIC(void) SIMIX_req_host_execution_wait(smx_action_t execution);
+
+
+/**************************** Process Requests ********************************/
+/* Constructor and Destructor */
+XBT_PUBLIC(smx_process_t) SIMIX_req_process_create(const char *name,
+ xbt_main_func_t code,
+ void *data,
+ const char *hostname,
+ int argc, char **argv,
+ xbt_dict_t properties);
+
+XBT_PUBLIC(void) SIMIX_req_process_kill(smx_process_t process);
+
+/* Process handling */
+XBT_PUBLIC(void) SIMIX_req_process_cleanup(void *arg); /* FIXME: This function shouldn't be called from outside SIMIX */
+XBT_PUBLIC(void) SIMIX_req_process_change_host(smx_process_t process,
+ const char *source, const char *dest);
+XBT_PUBLIC(void) SIMIX_req_process_suspend(smx_process_t process);
+XBT_PUBLIC(void) SIMIX_req_process_resume(smx_process_t process);
+
+/* Getters and Setters */
+XBT_PUBLIC(int) SIMIX_req_process_count(void);
+XBT_PUBLIC(void *) SIMIX_req_process_get_data(smx_process_t process);
+XBT_PUBLIC(void) SIMIX_req_process_set_data(smx_process_t process, void *data);
+XBT_INLINE XBT_PUBLIC(smx_host_t) SIMIX_req_process_get_host(smx_process_t process);
+XBT_PUBLIC(const char *) SIMIX_req_process_get_name(smx_process_t process);
+XBT_PUBLIC(int) SIMIX_req_process_is_suspended(smx_process_t process);
+XBT_PUBLIC(xbt_dict_t) SIMIX_req_process_get_properties(smx_process_t host);
+
+/* Sleep control */
+XBT_PUBLIC(e_smx_state_t) SIMIX_req_process_sleep(double duration);
+
+/************************** Comunication Requests *****************************/
+/***** Rendez-vous points *****/
+XBT_PUBLIC(smx_rdv_t) SIMIX_req_rdv_create(const char *name);
+XBT_PUBLIC(void) SIMIX_req_rdv_destroy(smx_rdv_t rvp);
+XBT_PUBLIC(smx_rdv_t) SIMIX_req_rdv_get_by_name(const char *name);
+XBT_PUBLIC(int) SIMIX_req_rdv_comm_count_by_host(smx_rdv_t rdv, smx_host_t host);
+XBT_PUBLIC(smx_action_t) SIMIX_req_rdv_get_head(smx_rdv_t rdv);
+
+/***** Communication Requests *****/
+
+/* Constructors and Destructor */
+XBT_PUBLIC(smx_action_t) SIMIX_req_comm_isend(smx_rdv_t rdv, double task_size,
+ double rate, void *src_buff,
+ size_t src_buff_size,
+ void *data);
+
+XBT_PUBLIC(smx_action_t) SIMIX_req_comm_irecv(smx_rdv_t rdv, void *dst_buff,
+ size_t * dst_buff_size);
+
+XBT_PUBLIC(void) SIMIX_req_comm_destroy(smx_action_t comm);
+
+/* Communication handling */
+XBT_INLINE XBT_PUBLIC(void) SIMIX_req_comm_cancel(smx_action_t comm);
+
+/* FIXME: waitany is going to be a vararg function, and should take a timeout */
+XBT_PUBLIC(unsigned int) SIMIX_req_comm_waitany(xbt_dynar_t comms);
+XBT_PUBLIC(void) SIMIX_req_comm_wait(smx_action_t comm, double timeout);
+XBT_PUBLIC(int) SIMIX_req_comm_test(smx_action_t comm);
+
+/* Getters and setters */
+XBT_PUBLIC(double) SIMIX_req_comm_get_remains(smx_action_t comm);
+XBT_PUBLIC(e_smx_state_t) SIMIX_req_comm_get_state(smx_action_t comm);
+XBT_PUBLIC(void *) SIMIX_req_comm_get_data(smx_action_t comm);
+XBT_PUBLIC(void *) SIMIX_req_comm_get_src_buff(smx_action_t comm);
+XBT_PUBLIC(void *) SIMIX_req_comm_get_dst_buff(smx_action_t comm);
+XBT_PUBLIC(size_t) SIMIX_req_comm_get_src_buff_size(smx_action_t comm);
+XBT_PUBLIC(size_t) SIMIX_req_comm_get_dst_buff_size(smx_action_t comm);
+XBT_PUBLIC(smx_process_t) SIMIX_req_comm_get_src_proc(smx_action_t comm);
+XBT_PUBLIC(smx_process_t) SIMIX_req_comm_get_dst_proc(smx_action_t comm);
+XBT_PUBLIC(void) SIMIX_req_comm_set_copy_data_callback(void (*callback)(smx_action_t,size_t));
+XBT_PUBLIC(void) SIMIX_req_comm_copy_pointer_callback(smx_action_t comm, size_t buff_size);
+XBT_PUBLIC(void) SIMIX_req_comm_copy_buffer_callback(smx_action_t comm, size_t buff_size);
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+XBT_PUBLIC(int) SIMIX_req_comm_is_latency_bounded(smx_action_t comm);
+#endif