X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/85c342932c60954a7e1c9430742bfff2b28c31a8..c7b463c9c17665403d001fc59cb649551e93d950:/examples/msg/actions/actions.c diff --git a/examples/msg/actions/actions.c b/examples/msg/actions/actions.c index 85a00a08d5..6d7361559d 100644 --- a/examples/msg/actions/actions.c +++ b/examples/msg/actions/actions.c @@ -7,9 +7,38 @@ #include #include #include "msg/msg.h" /* Yeah! If you want to use msg, you need to include msg/msg.h */ -#include "simix/simix.h" /* semaphores for the barrier */ +#include "simgrid/simix.h" /* semaphores for the barrier */ #include "xbt.h" /* calloc, printf */ #include "instr/instr_private.h" +#include + +/** @addtogroup MSG_examples + * + * @section MSG_ex_actions Trace driven simulations + * + * The actions/actions.c example demonstrates how to run trace-driven simulations. It + * is very handy when you want to test an algorithm or protocol that + * does nothing unless it receives some events from outside. For + * example, a P2P protocol reacts to requests from the user, but + * does nothing if there is no such event. + * + * In such situations, SimGrid allows to write your protocol in your + * C file, and the events to react to in a separate text file. + * Declare a function handling each of the events that you want to + * accept in your trace files, register them using \ref + * xbt_replay_action_register in your main, and then use \ref + * MSG_action_trace_run to launch the simulation. You can either + * have one trace file containing all your events, or a file per + * simulated process. Check the tesh files in the example directory + * for details on how to do it. + * + * This example uses this approach to replay MPI-like traces. It + * comes with a set of event handlers reproducing MPI events. This + * is somehow similar to SMPI, yet differently implemented. This + * code should probably be changed to use SMPI internals instead, + * but wasn't, so far. + * + */ XBT_LOG_NEW_DEFAULT_CATEGORY(actions, "Messages specific for this msg example"); @@ -237,27 +266,27 @@ static void action_barrier(const char *const *action) name = xbt_str_join_array(action, " "); if (mutex == NULL) { // first arriving on the barrier - mutex = SIMIX_req_mutex_init(); - cond = SIMIX_req_cond_init(); + mutex = simcall_mutex_init(); + cond = simcall_cond_init(); processes_arrived_sofar=0; } XBT_DEBUG("Entering barrier: %s (%d already there)", name,processes_arrived_sofar); - SIMIX_req_mutex_lock(mutex); + simcall_mutex_lock(mutex); if (++processes_arrived_sofar == communicator_size) { - SIMIX_req_cond_broadcast(cond); - SIMIX_req_mutex_unlock(mutex); + simcall_cond_broadcast(cond); + simcall_mutex_unlock(mutex); } else { - SIMIX_req_cond_wait(cond,mutex); - SIMIX_req_mutex_unlock(mutex); + simcall_cond_wait(cond,mutex); + simcall_mutex_unlock(mutex); } XBT_DEBUG("Exiting barrier: %s", name); processes_arrived_sofar--; if (!processes_arrived_sofar) { - SIMIX_req_cond_destroy(cond); - SIMIX_req_mutex_destroy(mutex); + simcall_cond_destroy(cond); + simcall_mutex_destroy(mutex); mutex=NULL; } @@ -267,105 +296,105 @@ static void action_barrier(const char *const *action) static void action_reduce(const char *const *action) { - int i; - char *reduce_identifier; - char mailbox[80]; - double comm_size = parse_double(action[2]); - double comp_size = parse_double(action[3]); - m_task_t comp_task = NULL; - const char *process_name; - double clock = MSG_get_clock(); - - process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self()); - - xbt_assert(communicator_size, "Size of Communicator is not defined, " - "can't use collective operations"); - - process_name = MSG_process_get_name(MSG_process_self()); - - reduce_identifier = bprintf("reduce_%d", counters->reduce_counter++); - - if (!strcmp(process_name, "p0")) { - XBT_DEBUG("%s: %s is the Root", reduce_identifier, process_name); - - msg_comm_t *comms = xbt_new0(msg_comm_t,communicator_size-1); - m_task_t *tasks = xbt_new0(m_task_t,communicator_size-1); - for (i = 1; i < communicator_size; i++) { - sprintf(mailbox, "%s_p%d_p0", reduce_identifier, i); - comms[i-1] = MSG_task_irecv(&(tasks[i-1]),mailbox); - } - MSG_comm_waitall(comms,communicator_size-1,-1); - for (i = 1; i < communicator_size; i++) { - MSG_comm_destroy(comms[i-1]); - MSG_task_destroy(tasks[i-1]); - } - free(tasks); - - comp_task = MSG_task_create("reduce_comp", comp_size, 0, NULL); - XBT_DEBUG("%s: computing 'reduce_comp'", reduce_identifier); - MSG_task_execute(comp_task); - MSG_task_destroy(comp_task); - XBT_DEBUG("%s: computed", reduce_identifier); - - } else { - XBT_DEBUG("%s: %s sends", reduce_identifier, process_name); - sprintf(mailbox, "%s_%s_p0", reduce_identifier, process_name); - XBT_DEBUG("put on %s", mailbox); - MSG_task_send(MSG_task_create(reduce_identifier, 0, comm_size, NULL), - mailbox); - } - - XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock); - free(reduce_identifier); + int i; + char *reduce_identifier; + char mailbox[80]; + double comm_size = parse_double(action[2]); + double comp_size = parse_double(action[3]); + m_task_t comp_task = NULL; + const char *process_name; + double clock = MSG_get_clock(); + + process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self()); + + xbt_assert(communicator_size, "Size of Communicator is not defined, " + "can't use collective operations"); + + process_name = MSG_process_get_name(MSG_process_self()); + + reduce_identifier = bprintf("reduce_%d", counters->reduce_counter++); + + if (!strcmp(process_name, "p0")) { + XBT_DEBUG("%s: %s is the Root", reduce_identifier, process_name); + + msg_comm_t *comms = xbt_new0(msg_comm_t,communicator_size-1); + m_task_t *tasks = xbt_new0(m_task_t,communicator_size-1); + for (i = 1; i < communicator_size; i++) { + sprintf(mailbox, "%s_p%d_p0", reduce_identifier, i); + comms[i-1] = MSG_task_irecv(&(tasks[i-1]),mailbox); + } + MSG_comm_waitall(comms,communicator_size-1,-1); + for (i = 1; i < communicator_size; i++) { + MSG_comm_destroy(comms[i-1]); + MSG_task_destroy(tasks[i-1]); + } + free(tasks); + + comp_task = MSG_task_create("reduce_comp", comp_size, 0, NULL); + XBT_DEBUG("%s: computing 'reduce_comp'", reduce_identifier); + MSG_task_execute(comp_task); + MSG_task_destroy(comp_task); + XBT_DEBUG("%s: computed", reduce_identifier); + + } else { + XBT_DEBUG("%s: %s sends", reduce_identifier, process_name); + sprintf(mailbox, "%s_%s_p0", reduce_identifier, process_name); + XBT_DEBUG("put on %s", mailbox); + MSG_task_send(MSG_task_create(reduce_identifier, 0, comm_size, NULL), + mailbox); + } + + XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock); + free(reduce_identifier); } static void action_bcast(const char *const *action) { - int i; - char *bcast_identifier; - char mailbox[80]; - double comm_size = parse_double(action[2]); - m_task_t task = NULL; - const char *process_name; - double clock = MSG_get_clock(); - - process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self()); - - xbt_assert(communicator_size, "Size of Communicator is not defined, " - "can't use collective operations"); - - process_name = MSG_process_get_name(MSG_process_self()); - - bcast_identifier = bprintf("bcast_%d", counters->bcast_counter++); - - if (!strcmp(process_name, "p0")) { - XBT_DEBUG("%s: %s is the Root", bcast_identifier, process_name); - - msg_comm_t *comms = xbt_new0(msg_comm_t,communicator_size-1); - - for (i = 1; i < communicator_size; i++) { - sprintf(mailbox, "%s_p0_p%d", bcast_identifier, i); - comms[i-1] = - MSG_task_isend(MSG_task_create(mailbox,0,comm_size,NULL), - mailbox); - } - MSG_comm_waitall(comms,communicator_size-1,-1); - for (i = 1; i < communicator_size; i++) - MSG_comm_destroy(comms[i-1]); - free(comms); - - XBT_DEBUG("%s: all messages sent by %s have been received", - bcast_identifier, process_name); - - } else { - sprintf(mailbox, "%s_p0_%s", bcast_identifier, process_name); - MSG_task_receive(&task, mailbox); - MSG_task_destroy(task); - XBT_DEBUG("%s: %s has received", bcast_identifier, process_name); - } - - XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock); - free(bcast_identifier); + int i; + char *bcast_identifier; + char mailbox[80]; + double comm_size = parse_double(action[2]); + m_task_t task = NULL; + const char *process_name; + double clock = MSG_get_clock(); + + process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self()); + + xbt_assert(communicator_size, "Size of Communicator is not defined, " + "can't use collective operations"); + + process_name = MSG_process_get_name(MSG_process_self()); + + bcast_identifier = bprintf("bcast_%d", counters->bcast_counter++); + + if (!strcmp(process_name, "p0")) { + XBT_DEBUG("%s: %s is the Root", bcast_identifier, process_name); + + msg_comm_t *comms = xbt_new0(msg_comm_t,communicator_size-1); + + for (i = 1; i < communicator_size; i++) { + sprintf(mailbox, "%s_p0_p%d", bcast_identifier, i); + comms[i-1] = + MSG_task_isend(MSG_task_create(mailbox,0,comm_size,NULL), + mailbox); + } + MSG_comm_waitall(comms,communicator_size-1,-1); + for (i = 1; i < communicator_size; i++) + MSG_comm_destroy(comms[i-1]); + free(comms); + + XBT_DEBUG("%s: all messages sent by %s have been received", + bcast_identifier, process_name); + + } else { + sprintf(mailbox, "%s_p0_%s", bcast_identifier, process_name); + MSG_task_receive(&task, mailbox); + MSG_task_destroy(task); + XBT_DEBUG("%s: %s has received", bcast_identifier, process_name); + } + + XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock); + free(bcast_identifier); } @@ -540,20 +569,20 @@ int main(int argc, char *argv[]) MSG_launch_application(argv[2]); /* Action registration */ - MSG_action_register("init", action_init); - MSG_action_register("finalize", action_finalize); - MSG_action_register("comm_size",action_comm_size); - MSG_action_register("send", action_send); - MSG_action_register("Isend", action_Isend); - MSG_action_register("recv", action_recv); - MSG_action_register("Irecv", action_Irecv); - MSG_action_register("wait", action_wait); - MSG_action_register("barrier", action_barrier); - MSG_action_register("bcast", action_bcast); - MSG_action_register("reduce", action_reduce); - MSG_action_register("allReduce",action_allReduce); - MSG_action_register("sleep", action_sleep); - MSG_action_register("compute", action_compute); + xbt_replay_action_register("init", action_init); + xbt_replay_action_register("finalize", action_finalize); + xbt_replay_action_register("comm_size",action_comm_size); + xbt_replay_action_register("send", action_send); + xbt_replay_action_register("Isend", action_Isend); + xbt_replay_action_register("recv", action_recv); + xbt_replay_action_register("Irecv", action_Irecv); + xbt_replay_action_register("wait", action_wait); + xbt_replay_action_register("barrier", action_barrier); + xbt_replay_action_register("bcast", action_bcast); + xbt_replay_action_register("reduce", action_reduce); + xbt_replay_action_register("allReduce",action_allReduce); + xbt_replay_action_register("sleep", action_sleep); + xbt_replay_action_register("compute", action_compute); /* Actually do the simulation using MSG_action_trace_run */