+++ /dev/null
-/* Copyright (c) 2012-2017. 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 "broadcaster.h"
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_broadcaster, "Messages specific for the broadcaster");
-
-xbt_dynar_t build_hostlist_from_hostcount(int hostcount)
-{
- xbt_dynar_t host_list = xbt_dynar_new(sizeof(char*), xbt_free_ref);
- for (int i = 1; i <= hostcount; i++) {
- char *hostname = bprintf("host%d", i);
- XBT_DEBUG("%s", hostname);
- xbt_dynar_push(host_list, &hostname);
- }
- return host_list;
-}
-
-int broadcaster_build_chain(broadcaster_t bc)
-{
- msg_task_t task = NULL;
- char** cur = (char**)xbt_dynar_iterator_next(bc->it);
- const char* me = MSG_host_get_name(MSG_host_self());
- const char* current_host = NULL;
- const char* prev = NULL;
- const char* next = NULL;
- const char* last = NULL;
-
- /* Build the chain if there's at least one peer */
- if (cur != NULL) {
- /* init: prev=NULL, host=current cur, next=next cur */
- next = *cur;
- bc->first = next;
-
- /* This iterator iterates one step ahead: cur is current iterated element, but is actually next in the chain */
- do {
- /* following steps: prev=last, host=next, next=cur */
- cur = (char**)xbt_dynar_iterator_next(bc->it);
- prev = last;
- current_host = next;
- if (cur != NULL)
- next = *cur;
- else
- next = NULL;
- XBT_DEBUG("Building chain--broadcaster:\"%s\" dest:\"%s\" prev:\"%s\" next:\"%s\"", me, current_host, prev, next);
-
- /* Send message to current peer */
- task = task_message_chain_new(prev, next, bc->piece_count);
- MSG_task_send(task, current_host);
-
- last = current_host;
- } while (cur != NULL);
- }
-
- return MSG_OK;
-}
-
-int broadcaster_send_file(broadcaster_t bc)
-{
- const char* me = MSG_host_get_name(MSG_host_self());
- msg_task_t task = NULL;
-
- bc->current_piece = 0;
-
- while (bc->current_piece < bc->piece_count) {
- task = task_message_data_new(NULL, PIECE_SIZE);
- XBT_DEBUG("Sending (send) piece %d from %s into mailbox %s", bc->current_piece, me, bc->first);
- MSG_task_send(task, bc->first);
- bc->current_piece++;
- }
-
- return MSG_OK;
-}
-
-broadcaster_t broadcaster_init(xbt_dynar_t host_list, unsigned int piece_count)
-{
- int status;
- broadcaster_t bc = xbt_new(s_broadcaster_t, 1);
-
- bc->first = NULL;
- bc->piece_count = piece_count;
- bc->current_piece = 0;
- bc->host_list = host_list;
- bc->it = xbt_dynar_iterator_new(bc->host_list, forward_indices_list);
- bc->max_pending_sends = MAX_PENDING_SENDS;
- bc->pending_sends = xbt_dynar_new(sizeof(msg_comm_t), NULL);
-
- status = broadcaster_build_chain(bc);
- xbt_assert(status == MSG_OK, "Chain initialization failed");
-
- return bc;
-}
-
-static void broadcaster_destroy(broadcaster_t bc)
-{
- /* Destroy iterator and hostlist */
- xbt_dynar_iterator_delete(bc->it);
- xbt_dynar_free(&bc->pending_sends);
- xbt_dynar_free(&bc->host_list);
- xbt_free(bc);
-}
-
-/** Emitter function */
-int broadcaster(int argc, char *argv[])
-{
- unsigned int piece_count = PIECE_COUNT;
-
- XBT_DEBUG("broadcaster");
-
- /* Add every mailbox given by the hostcount in argv[1] to a dynamic array */
- xbt_dynar_t host_list = build_hostlist_from_hostcount(xbt_str_parse_int(argv[1], "Invalid number of peers: %s"));
-
- /* argv[2] is the number of pieces */
- if (argc > 2) {
- piece_count = xbt_str_parse_int(argv[2], "Invalid number of pieces: %s");
- XBT_DEBUG("piece_count set to %u", piece_count);
- } else {
- XBT_DEBUG("No piece_count specified, defaulting to %u", piece_count);
- }
- broadcaster_t bc = broadcaster_init(host_list, piece_count);
-
- /* TODO: Error checking */
- int status = broadcaster_send_file(bc);
-
- broadcaster_destroy(bc);
-
- return status;
-}
