-boost::intrusive_ptr<simgrid::kernel::activity::ExecImpl> execution_start(const char* name, double flops_amount, double priority, double bound, sg_host_t host) [[nohandler]];
-boost::intrusive_ptr<simgrid::kernel::activity::ExecImpl> execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount, double rate, double timeout) [[nohandler]];
-int execution_wait(boost::intrusive_ptr<simgrid::kernel::activity::ActivityImpl> execution) [[block]];
-int execution_test(boost::intrusive_ptr<simgrid::kernel::activity::ActivityImpl> execution) [[block]];
+int execution_wait(simgrid::kernel::activity::ExecImpl* execution) [[block]];
+bool execution_test(simgrid::kernel::activity::ExecImpl* execution) [[block]];