X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cd641543689ed33eb33ac4f3905f63d3d6a0d541..65b0ef3e4abf59f79ff89fa7644aff2451922729:/examples/msg/bittorrent/peer.c diff --git a/examples/msg/bittorrent/peer.c b/examples/msg/bittorrent/peer.c index 07f7af671c..88b287f69b 100644 --- a/examples/msg/bittorrent/peer.c +++ b/examples/msg/bittorrent/peer.c @@ -34,7 +34,8 @@ static const int FILE_SIZE = FILE_PIECES * PIECES_BLOCKS * BLOCK_SIZE; void request_new_piece_to_peer(peer_t peer, connection_t remote_peer); void send_request_to_peer(peer_t peer, connection_t remote_peer, int piece); -void remove_current_piece(peer_t peer, connection_t remote_peer, int current_piece); +void remove_current_piece(peer_t peer, connection_t remote_peer, + int current_piece); /** @@ -105,8 +106,7 @@ void leech_loop(peer_t peer, double deadline) if (peer->comm_received == NULL) { // XBT_INFO("irecv"); peer->task_received = NULL; - peer->comm_received = - MSG_task_irecv(&peer->task_received, peer->mailbox); + peer->comm_received = MSG_task_irecv(&peer->task_received, peer->mailbox); } if (MSG_comm_test(peer->comm_received)) { // XBT_INFO("comm_test OK"); @@ -114,16 +114,16 @@ void leech_loop(peer_t peer, double deadline) MSG_comm_destroy(peer->comm_received); peer->comm_received = NULL; if (status == MSG_OK) { - handle_message(peer, peer->task_received); + handle_message(peer, peer->task_received); } } else { handle_pending_sends(peer); //We don't execute the choke algorithm if we don't already have a piece if (MSG_get_clock() >= next_choked_update && peer->pieces > 0) { - update_choked_peers(peer); - next_choked_update += UPDATE_CHOKED_INTERVAL; + update_choked_peers(peer); + next_choked_update += UPDATE_CHOKED_INTERVAL; } else { - MSG_process_sleep(1); + MSG_process_sleep(1); } } } @@ -142,23 +142,22 @@ void seed_loop(peer_t peer, double deadline) while (MSG_get_clock() < deadline) { if (peer->comm_received == NULL) { peer->task_received = NULL; - peer->comm_received = - MSG_task_irecv(&peer->task_received, peer->mailbox); + peer->comm_received = MSG_task_irecv(&peer->task_received, peer->mailbox); } if (MSG_comm_test(peer->comm_received)) { msg_error_t status = MSG_comm_get_status(peer->comm_received); MSG_comm_destroy(peer->comm_received); peer->comm_received = NULL; if (status == MSG_OK) { - handle_message(peer, peer->task_received); + handle_message(peer, peer->task_received); } } else { if (MSG_get_clock() >= next_choked_update) { - update_choked_peers(peer); - //TODO: Change the choked peer algorithm when seeding. - next_choked_update += UPDATE_CHOKED_INTERVAL; + update_choked_peers(peer); + //TODO: Change the choked peer algorithm when seeding. + next_choked_update += UPDATE_CHOKED_INTERVAL; } else { - MSG_process_sleep(1); + MSG_process_sleep(1); } } } @@ -174,17 +173,16 @@ int get_peers_data(peer_t peer) double timeout = MSG_get_clock() + GET_PEERS_TIMEOUT; //Build the task to send to the tracker tracker_task_data_t data = - tracker_task_data_new(MSG_host_get_name(MSG_host_self()), - peer->mailbox_tracker, peer->id, 0, 0, FILE_SIZE); + tracker_task_data_new(MSG_host_get_name(MSG_host_self()), + peer->mailbox_tracker, peer->id, 0, 0, FILE_SIZE); //Build the task to send. msg_task_t task_send = MSG_task_create(NULL, 0, TRACKER_COMM_SIZE, data); msg_task_t task_received = NULL; msg_comm_t comm_received; while (!send_success && MSG_get_clock() < timeout) { XBT_DEBUG("Sending a peer request to the tracker."); - msg_error_t status = - MSG_task_send_with_timeout(task_send, TRACKER_MAILBOX, - GET_PEERS_TIMEOUT); + msg_error_t status = MSG_task_send_with_timeout(task_send, TRACKER_MAILBOX, + GET_PEERS_TIMEOUT); if (status == MSG_OK) { send_success = 1; } @@ -198,9 +196,9 @@ int get_peers_data(peer_t peer) int peer_id; //Add the peers the tracker gave us to our peer list. xbt_dynar_foreach(data->peers, i, peer_id) { - if (peer_id != peer->id) - xbt_dict_set_ext(peer->peers, (char *) &peer_id, sizeof(int), - connection_new(peer_id), NULL); + if (peer_id != peer->id) + xbt_dict_set_ext(peer->peers, (char *) &peer_id, sizeof(int), + connection_new(peer_id), NULL); } success = 1; //free the communication and the task @@ -234,11 +232,11 @@ void peer_init(peer_t peer, int id, int seed) if (seed) { memset(peer->bitfield, '1', sizeof(char) * (FILE_PIECES + 1)); memset(peer->bitfield_blocks, '1', - sizeof(char) * FILE_PIECES * (PIECES_BLOCKS)); + sizeof(char) * FILE_PIECES * (PIECES_BLOCKS)); } else { memset(peer->bitfield, '0', sizeof(char) * (FILE_PIECES + 1)); memset(peer->bitfield_blocks, '0', - sizeof(char) * FILE_PIECES * (PIECES_BLOCKS)); + sizeof(char) * FILE_PIECES * (PIECES_BLOCKS)); } peer->bitfield[FILE_PIECES] = '\0'; @@ -284,8 +282,7 @@ void peer_free(peer_t peer) */ int has_finished(char *bitfield) { - return ((memchr(bitfield, '0', sizeof(char) * FILE_PIECES) == - NULL) ? 1 : 0); + return ((memchr(bitfield, '0', sizeof(char) * FILE_PIECES) == NULL) ? 1 : 0); } int nb_interested_peers(peer_t peer) @@ -311,12 +308,12 @@ void handle_pending_sends(peer_t peer) while ((index = MSG_comm_testany(peer->pending_sends)) != -1) { msg_comm_t comm_send = - xbt_dynar_get_as(peer->pending_sends, index, msg_comm_t); + xbt_dynar_get_as(peer->pending_sends, index, msg_comm_t); int status = MSG_comm_get_status(comm_send); xbt_dynar_remove_at(peer->pending_sends, index, &comm_send); XBT_DEBUG - ("Communication %p is finished with status %d, dynar size is now %lu", - comm_send, status, xbt_dynar_length(peer->pending_sends)); + ("Communication %p is finished with status %d, dynar size is now %lu", + comm_send, status, xbt_dynar_length(peer->pending_sends)); msg_task_t task = MSG_comm_get_task(comm_send); MSG_comm_destroy(comm_send); @@ -333,13 +330,13 @@ void update_active_peers_set(peer_t peer, connection_t remote_peer) if (remote_peer->interested && !remote_peer->choked_upload) { //add in the active peers set xbt_dict_set_ext(peer->active_peers, (char *) &remote_peer->id, - sizeof(int), remote_peer, NULL); + sizeof(int), remote_peer, NULL); } else { //remove xbt_ex_t e; TRY { xbt_dict_remove_ext(peer->active_peers, (char *) &remote_peer->id, - sizeof(int)); + sizeof(int)); } CATCH(e) { xbt_ex_free(e); @@ -358,17 +355,17 @@ void handle_message(peer_t peer, msg_task_t task) message_t message = MSG_task_get_data(task); connection_t remote_peer; remote_peer = - xbt_dict_get_or_null_ext(peer->peers, (char *) &message->peer_id, - sizeof(int)); + xbt_dict_get_or_null_ext(peer->peers, (char *) &message->peer_id, + sizeof(int)); switch (message->type) { case MESSAGE_HANDSHAKE: XBT_DEBUG("Received a HANDSHAKE from %s (%s)", message->mailbox, - message->issuer_host_name); + message->issuer_host_name); //Check if the peer is in our connection list. if (!remote_peer) { xbt_dict_set_ext(peer->peers, (char *) &message->peer_id, sizeof(int), - connection_new(message->peer_id), NULL); + connection_new(message->peer_id), NULL); send_handshake(peer, message->mailbox); } //Send our bitfield to the peer @@ -376,13 +373,13 @@ void handle_message(peer_t peer, msg_task_t task) break; case MESSAGE_BITFIELD: XBT_DEBUG("Recieved a BITFIELD message from %s (%s)", message->mailbox, - message->issuer_host_name); + message->issuer_host_name); //Update the pieces list update_pieces_count_from_bitfield(peer, message->bitfield); //Store the bitfield remote_peer->bitfield = xbt_strdup(message->bitfield); xbt_assert(!remote_peer->am_interested, - "Should not be interested at first"); + "Should not be interested at first"); if (is_interested(peer, remote_peer)) { remote_peer->am_interested = 1; send_interested(peer, message->mailbox); @@ -390,26 +387,26 @@ void handle_message(peer_t peer, msg_task_t task) break; case MESSAGE_INTERESTED: XBT_DEBUG("Recieved an INTERESTED message from %s (%s)", message->mailbox, - message->issuer_host_name); + message->issuer_host_name); xbt_assert((remote_peer != NULL), - "A non-in-our-list peer has sent us a message. WTH ?"); + "A non-in-our-list peer has sent us a message. WTH ?"); //Update the interested state of the peer. remote_peer->interested = 1; update_active_peers_set(peer, remote_peer); break; case MESSAGE_NOTINTERESTED: XBT_DEBUG("Received a NOTINTERESTED message from %s (%s)", - message->mailbox, message->issuer_host_name); + message->mailbox, message->issuer_host_name); xbt_assert((remote_peer != NULL), - "A non-in-our-list peer has sent us a message. WTH ?"); + "A non-in-our-list peer has sent us a message. WTH ?"); remote_peer->interested = 0; update_active_peers_set(peer, remote_peer); break; case MESSAGE_UNCHOKE: xbt_assert((remote_peer != NULL), - "A non-in-our-list peer has sent us a message. WTH ?"); + "A non-in-our-list peer has sent us a message. WTH ?"); XBT_DEBUG("Received a UNCHOKE message from %s (%s)", message->mailbox, - message->issuer_host_name); + message->issuer_host_name); remote_peer->choked_download = 0; //Send requests to the peer, since it has unchoked us if (remote_peer->am_interested) @@ -417,19 +414,19 @@ void handle_message(peer_t peer, msg_task_t task) break; case MESSAGE_CHOKE: xbt_assert((remote_peer != NULL), - "A non-in-our-list peer has sent us a message. WTH ?"); + "A non-in-our-list peer has sent us a message. WTH ?"); XBT_DEBUG("Received a CHOKE message from %s (%s)", message->mailbox, - message->issuer_host_name); + message->issuer_host_name); remote_peer->choked_download = 1; remove_current_piece(peer, remote_peer, remote_peer->current_piece); break; case MESSAGE_HAVE: XBT_DEBUG("Received a HAVE message from %s (%s) of piece %d", - message->mailbox, message->issuer_host_name, message->index); + message->mailbox, message->issuer_host_name, message->index); xbt_assert(remote_peer->bitfield, "bitfield not received"); xbt_assert((message->index >= 0 - && message->index < FILE_PIECES), - "Wrong HAVE message received"); + && message->index < FILE_PIECES), + "Wrong HAVE message received"); remote_peer->bitfield[message->index] = '1'; peer->pieces_count[message->index]++; //If the piece is in our pieces, we tell the peer that we are interested. @@ -437,72 +434,71 @@ void handle_message(peer_t peer, msg_task_t task) remote_peer->am_interested = 1; send_interested(peer, message->mailbox); if (!remote_peer->choked_download) - request_new_piece_to_peer(peer, remote_peer); + request_new_piece_to_peer(peer, remote_peer); } break; case MESSAGE_REQUEST: xbt_assert((message->index >= 0 - && message->index < FILE_PIECES), "Wrong request received"); + && message->index < FILE_PIECES), "Wrong request received"); if (!remote_peer->choked_upload) { XBT_DEBUG("Received a REQUEST from %s (%s) for %d (%d,%d)", - message->mailbox, message->issuer_host_name, message->peer_id, - message->block_index, - message->block_index + message->block_length); + message->mailbox, message->issuer_host_name, message->peer_id, + message->block_index, + message->block_index + message->block_length); if (peer->bitfield[message->index] == '1') { - send_piece(peer, message->mailbox, message->index, 0, - message->block_index, message->block_length); + send_piece(peer, message->mailbox, message->index, 0, + message->block_index, message->block_length); } } else { XBT_DEBUG("Received a REQUEST from %s (%s) for %d but he is choked.", - message->mailbox, message->issuer_host_name, - message->peer_id); + message->mailbox, message->issuer_host_name, message->peer_id); } break; case MESSAGE_PIECE: xbt_assert((message->index >= 0 - && message->index < FILE_PIECES), "Wrong piece received"); + && message->index < FILE_PIECES), "Wrong piece received"); //TODO: Execute à computation. if (message->stalled) { XBT_DEBUG("The received piece %d from %s (%s) is STALLED", - message->index, message->mailbox, message->issuer_host_name); + message->index, message->mailbox, message->issuer_host_name); } else { XBT_DEBUG("Received piece %d (%d,%d) from %s (%s)", message->index, - message->block_index, - message->block_index + message->block_length, - message->mailbox, message->issuer_host_name); + message->block_index, + message->block_index + message->block_length, + message->mailbox, message->issuer_host_name); if (peer->bitfield[message->index] == '0') { - update_bitfield_blocks(peer, message->index, message->block_index, - message->block_length); - if (piece_complete(peer, message->index)) { - //Removing the piece from our piece list - remove_current_piece(peer, remote_peer, message->index); - //Setting the fact that we have the piece - peer->bitfield[message->index] = '1'; - peer->pieces++; - XBT_DEBUG("My status is now %s", peer->bitfield); - //Sending the information to all the peers we are connected to - send_have(peer, message->index); - //sending UNINTERSTED to peers that doesn't have what we want. - update_interested_after_receive(peer); - } else { // piece not completed - send_request_to_peer(peer, remote_peer, message->index); // ask for the next block - } + update_bitfield_blocks(peer, message->index, message->block_index, + message->block_length); + if (piece_complete(peer, message->index)) { + //Removing the piece from our piece list + remove_current_piece(peer, remote_peer, message->index); + //Setting the fact that we have the piece + peer->bitfield[message->index] = '1'; + peer->pieces++; + XBT_DEBUG("My status is now %s", peer->bitfield); + //Sending the information to all the peers we are connected to + send_have(peer, message->index); + //sending UNINTERSTED to peers that doesn't have what we want. + update_interested_after_receive(peer); + } else { // piece not completed + send_request_to_peer(peer, remote_peer, message->index); // ask for the next block + } } else { - XBT_DEBUG("However, we already have it"); - request_new_piece_to_peer(peer, remote_peer); + XBT_DEBUG("However, we already have it"); + request_new_piece_to_peer(peer, remote_peer); } } break; case MESSAGE_CANCEL: XBT_DEBUG("The received CANCEL from %s (%s)", - message->mailbox, message->issuer_host_name); + message->mailbox, message->issuer_host_name); break; } //Update the peer speed. if (remote_peer) { connection_add_speed_value(remote_peer, - 1.0 / (MSG_get_clock() - - peer->begin_receive_time)); + 1.0 / (MSG_get_clock() - + peer->begin_receive_time)); } peer->begin_receive_time = MSG_get_clock(); @@ -519,7 +515,7 @@ void request_new_piece_to_peer(peer_t peer, connection_t remote_peer) } void remove_current_piece(peer_t peer, connection_t remote_peer, - int current_piece) + int current_piece) { int piece_index = -1, piece, i; xbt_dynar_foreach(peer->current_pieces, i, piece) { @@ -573,7 +569,8 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) return piece; // end game mode - if (xbt_dynar_length(peer->current_pieces) >= (FILE_PIECES - peer->pieces) && is_interested(peer, remote_peer)) { + if (xbt_dynar_length(peer->current_pieces) >= (FILE_PIECES - peer->pieces) + && is_interested(peer, remote_peer)) { int i; int nb_interesting_pieces = 0; int random_piece_index, current_index = 0; @@ -585,7 +582,8 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) } xbt_assert(nb_interesting_pieces != 0, "WTF !!!"); // get a random interesting piece - random_piece_index = RngStream_RandInt(peer->stream, 0, nb_interesting_pieces-1); + random_piece_index = + RngStream_RandInt(peer->stream, 0, nb_interesting_pieces - 1); for (i = 0; i < FILE_PIECES; i++) { if (peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1') { if (random_piece_index == current_index) { @@ -595,10 +593,9 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) current_index++; } } - xbt_assert(piece != -1,"WTF !!!"); + xbt_assert(piece != -1, "WTF !!!"); return piece; } - // Random first policy if (peer->pieces < 4 && is_interested_and_free(peer, remote_peer)) { int i; @@ -606,15 +603,18 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) int random_piece_index, current_index = 0; // compute the number of interesting pieces for (i = 0; i < FILE_PIECES; i++) { - if (peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1' && !in_current_pieces(peer, i)) { + if (peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1' + && !in_current_pieces(peer, i)) { nb_interesting_pieces++; } } xbt_assert(nb_interesting_pieces != 0, "WTF !!!"); // get a random interesting piece - random_piece_index = RngStream_RandInt(peer->stream, 0, nb_interesting_pieces-1); + random_piece_index = + RngStream_RandInt(peer->stream, 0, nb_interesting_pieces - 1); for (i = 0; i < FILE_PIECES; i++) { - if (peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1' && !in_current_pieces(peer, i)) { + if (peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1' + && !in_current_pieces(peer, i)) { if (random_piece_index == current_index) { piece = i; break; @@ -622,9 +622,9 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) current_index++; } } - xbt_assert(piece != -1,"WTF !!!"); + xbt_assert(piece != -1, "WTF !!!"); return piece; - } else { // Rarest first policy + } else { // Rarest first policy int i; short min = SHRT_MAX; int nb_min_pieces = 0; @@ -635,16 +635,18 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) && remote_peer->bitfield[i] == '1' && !in_current_pieces(peer, i)) min = peer->pieces_count[i]; } - xbt_assert(min != SHRT_MAX || !is_interested_and_free(peer, remote_peer), "WTF !!!"); + xbt_assert(min != SHRT_MAX + || !is_interested_and_free(peer, remote_peer), "WTF !!!"); // compute the number of rarest pieces for (i = 0; i < FILE_PIECES; i++) { if (peer->pieces_count[i] == min && peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1' && !in_current_pieces(peer, i)) nb_min_pieces++; } - xbt_assert(nb_min_pieces != 0 || !is_interested_and_free(peer, remote_peer), "WTF !!!"); + xbt_assert(nb_min_pieces != 0 + || !is_interested_and_free(peer, remote_peer), "WTF !!!"); // get a random rarest piece - random_rarest_index = RngStream_RandInt(peer->stream, 0, nb_min_pieces-1); + random_rarest_index = RngStream_RandInt(peer->stream, 0, nb_min_pieces - 1); for (i = 0; i < FILE_PIECES; i++) { if (peer->pieces_count[i] == min && peer->bitfield[i] == '0' && remote_peer->bitfield[i] == '1' && !in_current_pieces(peer, i)) { @@ -655,7 +657,8 @@ int select_piece_to_download(peer_t peer, connection_t remote_peer) current_index++; } } - xbt_assert(piece != -1 || !is_interested_and_free(peer, remote_peer),"WTF !!!"); + xbt_assert(piece != -1 + || !is_interested_and_free(peer, remote_peer), "WTF !!!"); return piece; } } @@ -673,7 +676,7 @@ void update_choked_peers(peer_t peer) // if(xbt_dict_size(peer->active_peers) > 0) // return; XBT_DEBUG("(%d) update_choked peers %d active peers", peer->id, - xbt_dict_size(peer->active_peers)); + xbt_dict_size(peer->active_peers)); //update the current round peer->round = (peer->round + 1) % 3; char *key, *key_choked; @@ -698,9 +701,9 @@ void update_choked_peers(peer_t peer) xbt_dict_foreach(peer->peers, cursor, key, connection) { if (connection->last_unchoke < unchoke_time && connection->interested - && connection->choked_upload) { - unchoke_time = connection->last_unchoke; - peer_choosed = connection; + && connection->choked_upload) { + unchoke_time = connection->last_unchoke; + peer_choosed = connection; } } } else { @@ -708,43 +711,43 @@ void update_choked_peers(peer_t peer) if (peer->round == 0) { int j = 0; do { - //We choose a random peer to unchoke. - int id_chosen = RngStream_RandInt(peer->stream, 0, - xbt_dict_length(peer->peers) - 1); - int i = 0; - connection_t connection; - xbt_dict_foreach(peer->peers, cursor, key, connection) { - if (i == id_chosen) { - peer_choosed = connection; - break; - } - i++; - } - xbt_dict_cursor_free(&cursor); - if (!peer_choosed->interested || !peer_choosed->choked_upload) { - peer_choosed = NULL; - } - j++; + //We choose a random peer to unchoke. + int id_chosen = RngStream_RandInt(peer->stream, 0, + xbt_dict_length(peer->peers) - 1); + int i = 0; + connection_t connection; + xbt_dict_foreach(peer->peers, cursor, key, connection) { + if (i == id_chosen) { + peer_choosed = connection; + break; + } + i++; + } + xbt_dict_cursor_free(&cursor); + if (!peer_choosed->interested || !peer_choosed->choked_upload) { + peer_choosed = NULL; + } + j++; } while (peer_choosed == NULL && j < MAXIMUM_PAIRS); } else { //Use the "fastest download" policy. connection_t connection; double fastest_speed = 0.0; xbt_dict_foreach(peer->peers, cursor, key, connection) { - if (connection->peer_speed > fastest_speed - && connection->choked_upload && connection->interested) { - peer_choosed = connection; - fastest_speed = connection->peer_speed; - } + if (connection->peer_speed > fastest_speed + && connection->choked_upload && connection->interested) { + peer_choosed = connection; + fastest_speed = connection->peer_speed; + } } } } if (peer_choosed != NULL) XBT_DEBUG - ("(%d) update_choked peers unchoked (%d) ; int (%d) ; choked (%d) ", - peer->id, peer_choosed->id, peer_choosed->interested, - peer_choosed->choked_upload); + ("(%d) update_choked peers unchoked (%d) ; int (%d) ; choked (%d) ", + peer->id, peer_choosed->id, peer_choosed->interested, + peer_choosed->choked_upload); // if (xbt_dict_size(peer->peers) > 0) // xbt_assert((xbt_dict_size(peer->active_peers) != 0), @@ -759,7 +762,7 @@ void update_choked_peers(peer_t peer) if (peer_choked != peer_choosed) { if (peer_choked != NULL) { xbt_assert((!peer_choked->choked_upload), - "Tries to choked a choked peer"); + "Tries to choked a choked peer"); peer_choked->choked_upload = 1; xbt_assert((*((int *) key_choked) == peer_choked->id), "WTF !!!"); update_active_peers_set(peer, peer_choked); @@ -769,10 +772,10 @@ void update_choked_peers(peer_t peer) } if (peer_choosed != NULL) { xbt_assert((peer_choosed->choked_upload), - "Tries to unchoked an unchoked peer"); + "Tries to unchoked an unchoked peer"); peer_choosed->choked_upload = 0; xbt_dict_set_ext(peer->active_peers, (char *) &peer_choosed->id, - sizeof(int), peer_choosed, NULL); + sizeof(int), peer_choosed, NULL); peer_choosed->last_unchoke = MSG_get_clock(); XBT_DEBUG("(%d) Sending a UNCHOKE to %d", peer->id, peer_choosed->id); update_active_peers_set(peer, peer_choosed); @@ -800,27 +803,27 @@ void update_interested_after_receive(peer_t peer) //Check if the peer still has a piece we want. int i; for (i = 0; i < FILE_PIECES; i++) { - if (connection->bitfield[i] == '1' && peer->bitfield[i] == '0') { - interested = 1; - break; - } + if (connection->bitfield[i] == '1' && peer->bitfield[i] == '0') { + interested = 1; + break; + } } - if (!interested) { //no more piece to download from connection - connection->am_interested = 0; - send_notinterested(peer, connection->mailbox); + if (!interested) { //no more piece to download from connection + connection->am_interested = 0; + send_notinterested(peer, connection->mailbox); } } } } void update_bitfield_blocks(peer_t peer, int index, int block_index, - int block_length) + int block_length) { int i; xbt_assert((index >= 0 && index <= FILE_PIECES), "Wrong piece."); xbt_assert((block_index >= 0 - && block_index <= PIECES_BLOCKS), "Wrong block : %d.", - block_index); + && block_index <= PIECES_BLOCKS), "Wrong block : %d.", + block_index); for (i = block_index; i < (block_index + block_length); i++) { peer->bitfield_blocks[index * PIECES_BLOCKS + i] = '1'; } @@ -879,7 +882,7 @@ int is_interested_and_free(peer_t peer, connection_t remote_peer) int i; for (i = 0; i < FILE_PIECES; i++) { if (remote_peer->bitfield[i] == '1' && peer->bitfield[i] == '0' - && !in_current_pieces(peer, i)) { + && !in_current_pieces(peer, i)) { return 1; } } @@ -922,8 +925,7 @@ void send_request_to_peer(peer_t peer, connection_t remote_peer, int piece) if (block_index != -1) { block_length = PIECES_BLOCKS - block_index; block_length = min(BLOCKS_REQUESTED, block_length); - send_request(peer, remote_peer->mailbox, piece, block_index, - block_length); + send_request(peer, remote_peer->mailbox, piece, block_index, block_length); } } @@ -962,8 +964,8 @@ int in_current_pieces(peer_t peer, int piece) void send_interested(peer_t peer, const char *mailbox) { msg_task_t task = - task_message_new(MESSAGE_INTERESTED, peer->hostname, peer->mailbox, - peer->id, task_message_size(MESSAGE_INTERESTED)); + task_message_new(MESSAGE_INTERESTED, peer->hostname, peer->mailbox, + peer->id, task_message_size(MESSAGE_INTERESTED)); MSG_task_dsend(task, mailbox, task_message_free); XBT_DEBUG("Sending INTERESTED to %s", mailbox); @@ -977,8 +979,8 @@ void send_interested(peer_t peer, const char *mailbox) void send_notinterested(peer_t peer, const char *mailbox) { msg_task_t task = - task_message_new(MESSAGE_NOTINTERESTED, peer->hostname, peer->mailbox, - peer->id, task_message_size(MESSAGE_NOTINTERESTED)); + task_message_new(MESSAGE_NOTINTERESTED, peer->hostname, peer->mailbox, + peer->id, task_message_size(MESSAGE_NOTINTERESTED)); MSG_task_dsend(task, mailbox, task_message_free); XBT_DEBUG("Sending NOTINTERESTED to %s", mailbox); @@ -995,8 +997,8 @@ void send_handshake_all(peer_t peer) char *key; xbt_dict_foreach(peer->peers, cursor, key, remote_peer) { msg_task_t task = - task_message_new(MESSAGE_HANDSHAKE, peer->hostname, peer->mailbox, - peer->id, task_message_size(MESSAGE_HANDSHAKE)); + task_message_new(MESSAGE_HANDSHAKE, peer->hostname, peer->mailbox, + peer->id, task_message_size(MESSAGE_HANDSHAKE)); MSG_task_dsend(task, remote_peer->mailbox, task_message_free); XBT_DEBUG("Sending a HANDSHAKE to %s", remote_peer->mailbox); } @@ -1010,8 +1012,8 @@ void send_handshake_all(peer_t peer) void send_handshake(peer_t peer, const char *mailbox) { msg_task_t task = - task_message_new(MESSAGE_HANDSHAKE, peer->hostname, peer->mailbox, - peer->id, task_message_size(MESSAGE_HANDSHAKE)); + task_message_new(MESSAGE_HANDSHAKE, peer->hostname, peer->mailbox, + peer->id, task_message_size(MESSAGE_HANDSHAKE)); MSG_task_dsend(task, mailbox, task_message_free); XBT_DEBUG("Sending a HANDSHAKE to %s", mailbox); } @@ -1023,8 +1025,8 @@ void send_choked(peer_t peer, const char *mailbox) { XBT_DEBUG("Sending a CHOKE to %s", mailbox); msg_task_t task = - task_message_new(MESSAGE_CHOKE, peer->hostname, peer->mailbox, - peer->id, task_message_size(MESSAGE_CHOKE)); + task_message_new(MESSAGE_CHOKE, peer->hostname, peer->mailbox, + peer->id, task_message_size(MESSAGE_CHOKE)); MSG_task_dsend(task, mailbox, task_message_free); } @@ -1035,8 +1037,8 @@ void send_unchoked(peer_t peer, const char *mailbox) { XBT_DEBUG("Sending a UNCHOKE to %s", mailbox); msg_task_t task = - task_message_new(MESSAGE_UNCHOKE, peer->hostname, peer->mailbox, - peer->id, task_message_size(MESSAGE_UNCHOKE)); + task_message_new(MESSAGE_UNCHOKE, peer->hostname, peer->mailbox, + peer->id, task_message_size(MESSAGE_UNCHOKE)); MSG_task_dsend(task, mailbox, task_message_free); } @@ -1051,9 +1053,9 @@ void send_have(peer_t peer, int piece) char *key; xbt_dict_foreach(peer->peers, cursor, key, remote_peer) { msg_task_t task = - task_message_index_new(MESSAGE_HAVE, peer->hostname, peer->mailbox, - peer->id, piece, - task_message_size(MESSAGE_HAVE)); + task_message_index_new(MESSAGE_HAVE, peer->hostname, peer->mailbox, + peer->id, piece, + task_message_size(MESSAGE_HAVE)); MSG_task_dsend(task, remote_peer->mailbox, task_message_free); } } @@ -1066,8 +1068,8 @@ void send_bitfield(peer_t peer, const char *mailbox) { XBT_DEBUG("Sending a BITFIELD to %s", mailbox); msg_task_t task = - task_message_bitfield_new(peer->hostname, peer->mailbox, peer->id, - peer->bitfield, FILE_PIECES); + task_message_bitfield_new(peer->hostname, peer->mailbox, peer->id, + peer->bitfield, FILE_PIECES); //Async send and append to pending sends msg_comm_t comm = MSG_task_isend(task, mailbox); xbt_dynar_push(peer->pending_sends, &comm); @@ -1077,13 +1079,13 @@ void send_bitfield(peer_t peer, const char *mailbox) * Send a "request" message to a pair, containing a request for a piece */ void send_request(peer_t peer, const char *mailbox, int piece, - int block_index, int block_length) + int block_index, int block_length) { XBT_DEBUG("Sending a REQUEST to %s for piece %d (%d,%d)", mailbox, piece, - block_index, block_length); + block_index, block_length); msg_task_t task = - task_message_request_new(peer->hostname, peer->mailbox, peer->id, piece, - block_index, block_length); + task_message_request_new(peer->hostname, peer->mailbox, peer->id, piece, + block_index, block_length); MSG_task_dsend(task, mailbox, task_message_free); } @@ -1091,15 +1093,15 @@ void send_request(peer_t peer, const char *mailbox, int piece, * Send a "piece" message to a pair, containing a piece of the file */ void send_piece(peer_t peer, const char *mailbox, int piece, int stalled, - int block_index, int block_length) + int block_index, int block_length) { XBT_DEBUG("Sending the PIECE %d (%d,%d) to %s", piece, block_index, - block_length, mailbox); + block_length, mailbox); xbt_assert(piece >= 0, "Tried to send a piece that doesn't exist."); xbt_assert((peer->bitfield[piece] == '1'), - "Tried to send a piece that we doesn't have."); + "Tried to send a piece that we doesn't have."); msg_task_t task = - task_message_piece_new(peer->hostname, peer->mailbox, peer->id, piece, - stalled, block_index, block_length, BLOCK_SIZE); + task_message_piece_new(peer->hostname, peer->mailbox, peer->id, piece, + stalled, block_index, block_length, BLOCK_SIZE); MSG_task_dsend(task, mailbox, task_message_free); }