-typedef xbt_dictelm_t sg_host_t;
-XBT_PUBLIC(sg_host_t) sg_host_by_name(const char *name);
-XBT_PUBLIC(sg_host_t) sg_host_by_name_or_create(const char *name);
-static XBT_INLINE char *sg_host_get_name(sg_host_t host){
- return host->key;
-}
-XBT_PUBLIC(xbt_dynar_t) sg_hosts_as_dynar(void);
-
-#ifdef __cplusplus
-#define DEFINE_EXTERNAL_CLASS(klass) class klass;
-class Cpu;
-#else
-#define DEFINE_EXTERNAL_CLASS(klass) typedef struct klass klass;
-#endif
-
-// ========== MSG Layer ==============
-typedef struct s_msg_host_priv *msg_host_priv_t;
-msg_host_priv_t sg_host_msg(sg_host_t host);
-XBT_PUBLIC(void) sg_host_msg_set(sg_host_t host, msg_host_priv_t priv);
-XBT_PUBLIC(void) sg_host_msg_destroy(sg_host_t host);
-
-// ========== Simix layer =============
-typedef struct s_smx_host_priv *smx_host_priv_t;
-XBT_PUBLIC(smx_host_priv_t) sg_host_simix(sg_host_t host);
-XBT_PUBLIC(void) sg_host_simix_set(sg_host_t host, smx_host_priv_t priv);
-XBT_PUBLIC(void) sg_host_simix_destroy(sg_host_t host);
-
-// ========== SURF CPU ============
-DEFINE_EXTERNAL_CLASS(Cpu);
-typedef Cpu *surf_cpu_t;
-typedef Cpu *CpuPtr;
-XBT_PUBLIC(surf_cpu_t) sg_host_surfcpu(sg_host_t host);
-XBT_PUBLIC(void) sg_host_surfcpu_set(sg_host_t host, surf_cpu_t cpu);
-XBT_PUBLIC(void) sg_host_surfcpu_destroy(sg_host_t host);
-
-// ========== RoutingEdge ============
-typedef struct RoutingEdge *RoutingEdgePtr;
-XBT_PUBLIC(RoutingEdgePtr) sg_host_edge(sg_host_t host);
-XBT_PUBLIC(void) sg_host_edge_set(sg_host_t host, RoutingEdgePtr edge);
-XBT_PUBLIC(void) sg_host_edge_destroy(sg_host_t host, int do_callback);
-
-
-// Module initializer. Won't survive the conversion to C++. Hopefully.
-XBT_PUBLIC(void) sg_host_init(void);