-/** @ingroup SURF_callbacks
- * @brief Callbacks handler which emit the callbacks after Cpu creation *
- * @details Callback functions have the following signature: `void(CpuPtr)`
- */
-XBT_PUBLIC_DATA(simgrid::surf::signal<void(Cpu*)>) cpuCreatedCallbacks;
-
-/** @ingroup SURF_callbacks
- * @brief Callbacks handler which emit the callbacks after Cpu destruction *
- * @details Callback functions have the following signature: `void(CpuPtr)`
- */
-XBT_PUBLIC_DATA(simgrid::surf::signal<void(Cpu*)>) cpuDestructedCallbacks;
-
-/** @ingroup SURF_callbacks
- * @brief Callbacks handler which emit the callbacks after Cpu State changed *
- * @details Callback functions have the following signature: `void(CpuAction *action, e_surf_resource_state_t old, e_surf_resource_state_t current)`
- */
-XBT_PUBLIC_DATA(simgrid::surf::signal<void(Cpu*, e_surf_resource_state_t, e_surf_resource_state_t)>) cpuStateChangedCallbacks;
-
-/** @ingroup SURF_callbacks
- * @brief Callbacks handler which emit the callbacks after CpuAction State changed *
- * @details Callback functions have the following signature: `void(CpuAction *action, e_surf_action_state_t old, e_surf_action_state_t current)`
- */
-XBT_PUBLIC_DATA(simgrid::surf::signal<void(CpuAction*, e_surf_action_state_t, e_surf_action_state_t)>) cpuActionStateChangedCallbacks;
-
-XBT_PUBLIC(void) cpu_add_traces();
-