void *data, double timeout);
smx_action_t SIMIX_pre_comm_isend(smx_simcall_t simcall, smx_rdv_t rdv,
double task_size, double rate,
void *src_buff, size_t src_buff_size,
int (*match_fun)(void *, void *,smx_action_t),
void (*clean_fun)(void *),
void *data, double timeout);
smx_action_t SIMIX_pre_comm_isend(smx_simcall_t simcall, smx_rdv_t rdv,
double task_size, double rate,
void *src_buff, size_t src_buff_size,
int (*match_fun)(void *, void *,smx_action_t),
void (*clean_fun)(void *),