X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e68d03f1f2c0206497381c7ef3b91bd5d46f1964..a8c24434f1950151325aff16e98b10e62ff33f99:/doc/msg-tuto-src/masterworker4.c diff --git a/doc/msg-tuto-src/masterworker4.c b/doc/msg-tuto-src/masterworker4.c index c50a067d31..acec3257bd 100644 --- a/doc/msg-tuto-src/masterworker4.c +++ b/doc/msg-tuto-src/masterworker4.c @@ -1,23 +1,11 @@ -/* Copyright (c) 2007-2010, 2013-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ -#include -#include "simgrid/msg.h" /* Yeah! If you want to use msg, you need to include simgrid/msg.h */ -#include "xbt/sysdep.h" /* calloc, printf */ +#include "simgrid/msg.h" -/* Create a log channel to have nice outputs. */ -#include "xbt/log.h" -#include "xbt/asserts.h" -XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, - "Messages specific for this msg example"); - -int master(int argc, char *argv[]); -int worker(int argc, char *argv[]); -msg_error_t test_all(const char *platform_file, - const char *application_file); +XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example"); #define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */ @@ -29,114 +17,95 @@ static char * build_channel_name(char *buffer, const char *sender, const char* r return buffer; } -/** Emitter function */ -int master(int argc, char *argv[]) +/* forward definitions */ +static int master(int argc, char* argv[]); +static int worker(int argc, char* argv[]); + +static int master(int argc, char *argv[]) { - int workers_count = 0; - msg_host_t *workers = NULL; - msg_task_t *todo = NULL; msg_host_t host_self = MSG_host_self(); char *master_name = (char *) MSG_host_get_name(host_self); - double task_comp_size = 0; - double task_comm_size = 0; char channel[1024]; - double timeout = -1; - - int i; TRACE_category(master_name); - XBT_ATTRIB_UNUSED int res = sscanf(argv[1], "%lg", &timeout); - xbt_assert(res,"Invalid argument %s\n", argv[1]); - res = sscanf(argv[2], "%lg", &task_comp_size); - xbt_assert(res, "Invalid argument %s\n", argv[2]); - res = sscanf(argv[3], "%lg", &task_comm_size); - xbt_assert(res, "Invalid argument %s\n", argv[3]); - - { /* Process organization */ - workers_count = MSG_get_host_number(); - workers = xbt_dynar_to_array(MSG_hosts_as_dynar()); - - for (i = 0; i < workers_count; i++) - if(host_self == workers[i]) { - workers[i] = workers[workers_count-1]; - workers_count--; - break; - } + double timeout = xbt_str_parse_double(argv[1], "Invalid timeout: %s"); /** - timeout */ + double comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s"); /** - Task compute cost */ + double comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s"); /** - Task communication size */ - for (i = 0; i < workers_count; i++) - MSG_process_create("worker", worker, master_name, workers[i]); - } + /* Get the info about the worker processes */ + int workers_count = argc - 4; + msg_host_t* workers = xbt_dynar_to_array(MSG_hosts_as_dynar()); + + for (int i = 0; i < workers_count; i++) // Remove my host from the list + if (host_self == workers[i]) { + workers[i] = workers[workers_count - 1]; + workers_count--; + break; + } + + for (int i = 0; i < workers_count; i++) + MSG_process_create("worker", worker, (void*)master_name, workers[i]); + XBT_INFO("Got %d workers and will send tasks for %g seconds", workers_count, timeout); - XBT_INFO("Got %d workers and will send tasks for %g seconds!", - workers_count, timeout); + /* Dispatch the tasks */ xbt_dynar_t idle_hosts = xbt_dynar_new(sizeof(msg_host_t), NULL); msg_host_t request_host = NULL; + int task_num = 0; + while (1) { - for (i = 0; 1;) { - char sprintf_buffer[64]; - msg_task_t task = NULL; - - msg_task_t request = NULL; - while(MSG_task_listen(master_name)) { - res = MSG_task_receive(&(request),master_name); + while (MSG_task_listen(master_name)) { + msg_task_t request = NULL; + int res = MSG_task_receive(&(request), master_name); xbt_assert(res == MSG_OK, "MSG_task_receive failed"); request_host = MSG_task_get_data(request); xbt_dynar_push(idle_hosts, &request_host); MSG_task_destroy(request); - request = NULL; } if(MSG_get_clock()>timeout) { if(xbt_dynar_length(idle_hosts) == workers_count) break; else { - MSG_process_sleep(.1); - continue; + MSG_process_sleep(.1); + continue; } } - + if(xbt_dynar_length(idle_hosts)<=0) { /* No request. Let's wait... */ MSG_process_sleep(.1); continue; } - sprintf(sprintf_buffer, "Task_%d", i); - task = MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size, - NULL); + char sprintf_buffer[64]; + sprintf(sprintf_buffer, "Task_%d", task_num); + msg_task_t task = MSG_task_create(sprintf_buffer, comp_size, comm_size, NULL); MSG_task_set_category(task, master_name); xbt_dynar_shift(idle_hosts, &request_host); build_channel_name(channel,master_name, MSG_host_get_name(request_host)); - - XBT_DEBUG("Sending \"%s\" to channel \"%s\"", task->name, channel); + + XBT_DEBUG("Sending '%s' to channel '%s'", task->name, channel); MSG_task_send(task, channel); XBT_DEBUG("Sent"); - i++; + task_num++; } - int task_num = i; - - XBT_DEBUG - ("All tasks have been dispatched. Let's tell everybody the computation is over."); - for (i = 0; i < workers_count; i++) { + XBT_DEBUG ("All tasks have been dispatched. Let's tell everybody the computation is over."); + for (int i = 0; i < workers_count; i++) { msg_task_t finalize = MSG_task_create("finalize", 0, 0, FINALIZE); - MSG_task_send(finalize, build_channel_name(channel,master_name, - MSG_host_get_name(workers[i % workers_count]))); + MSG_task_send(finalize, build_channel_name(channel,master_name, MSG_host_get_name(workers[i % workers_count]))); } XBT_INFO("Sent %d tasks in total!", task_num); free(workers); - free(todo); return 0; -} /* end_of_master */ +} -/** Receiver function */ -int worker(int argc, char *argv[]) +/** Worker function */ +static int worker(int argc, char *argv[]) { - msg_task_t task = NULL; - XBT_ATTRIB_UNUSED int res; char channel[1024]; const char *my_master = MSG_process_get_data(MSG_process_self()); @@ -149,61 +118,44 @@ int worker(int argc, char *argv[]) msg_task_t request = MSG_task_create("request", 0, 0, MSG_host_self()); MSG_task_send(request, my_master); - res = MSG_task_receive(&(task),channel); + /* Wait for the answer */ + msg_task_t task = NULL; + int res = MSG_task_receive(&(task), channel); xbt_assert(res == MSG_OK, "MSG_task_receive failed"); - - XBT_DEBUG("Received \"%s\"", MSG_task_get_name(task)); + + XBT_DEBUG("Received '%s'", MSG_task_get_name(task)); if (!strcmp(MSG_task_get_name(task), "finalize")) { MSG_task_destroy(task); break; } - XBT_DEBUG("Processing \"%s\"", MSG_task_get_name(task)); + XBT_DEBUG("Processing '%s'", MSG_task_get_name(task)); MSG_task_execute(task); - XBT_DEBUG("\"%s\" done", MSG_task_get_name(task)); + XBT_DEBUG("'%s' done", MSG_task_get_name(task)); MSG_task_destroy(task); - task = NULL; } XBT_DEBUG("I'm done. See you!"); return 0; -} /* end_of_worker */ - -/** Test function */ -msg_error_t test_all(const char *platform_file, - const char *application_file) -{ - msg_error_t res = MSG_OK; - - { /* Simulation setting */ - MSG_create_environment(platform_file); - } - { /* Application deployment */ - MSG_function_register("master", master); - MSG_function_register("worker", worker); - MSG_launch_application(application_file); - } - res = MSG_main(); - - XBT_INFO("Simulation time %g", MSG_get_clock()); - return res; -} /* end_of_test_all */ - +} /** Main function */ int main(int argc, char *argv[]) { - msg_error_t res = MSG_OK; - MSG_init(&argc, argv); - if (argc < 3) { - printf("Usage: %s platform_file deployment_file\n", argv[0]); - printf("example: %s msg_platform.xml msg_deployment.xml\n", argv[0]); - exit(1); - } - res = test_all(argv[1], argv[2]); + xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n" + "\tExample: %s msg_platform.xml msg_deployment.xml\n", argv[0], argv[0]); + + /* Create a simulated platform */ + MSG_create_environment(argv[1]); - if (res == MSG_OK) - return 0; - else - return 1; -} /* end_of_main */ + /* Application deployment */ + MSG_function_register("master", master); + MSG_function_register("worker", worker); + MSG_launch_application(argv[2]); + + /* Run the simulation */ + msg_error_t res = MSG_main(); + + XBT_INFO("Simulation time %g", MSG_get_clock()); + return (res != MSG_OK); +}