1 /* Copyright (c) 2012. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "bittorrent.h"
9 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_messages, "Messages specific for the message factory");
11 #define BYTES_TO_MB(x) ((long double)x/1048576.0)
12 #define BITS_TO_BYTES(x) ((x / 8) + (x % 8) ? 1 : 0)
15 * Build a new empty message
16 * @param type type of the message
17 * @param issuer_host_name hostname of the issuer, for debuging purposes
18 * @param mailbox mailbox where the peer should answer
19 * @param peer_id id of the issuer
20 * @param size message size in bytes
22 msg_task_t task_message_new(e_message_type type, const char *issuer_host_name,
23 const char *mailbox, int peer_id, int size)
25 long double size_mb = BYTES_TO_MB(size);
26 message_t message = xbt_new(s_message_t, 1);
27 message->issuer_host_name = issuer_host_name;
28 message->peer_id = peer_id;
29 message->mailbox = mailbox;
31 msg_task_t task = MSG_task_create(NULL, 0, size_mb, message);
32 XBT_DEBUG("type: %d size: %.20Lg (%d)", type, size_mb, size);
37 * Builds a message containing an index.
39 msg_task_t task_message_index_new(e_message_type type,
40 const char *issuer_host_name,
41 const char *mailbox, int peer_id,
42 int index, int varsize)
44 msg_task_t task = task_message_new(type, issuer_host_name, mailbox, peer_id,
45 task_message_size(type) + varsize);
46 message_t message = MSG_task_get_data(task);
47 message->index = index;
51 msg_task_t task_message_bitfield_new(const char *issuer_host_name,
52 const char *mailbox, int peer_id,
53 char *bitfield, int bitfield_size)
56 task_message_new(MESSAGE_BITFIELD, issuer_host_name, mailbox, peer_id,
57 task_message_size(MESSAGE_BITFIELD) +
58 /* Size of bitfield in bytes */
59 BITS_TO_BYTES(bitfield_size));
60 message_t message = MSG_task_get_data(task);
61 message->bitfield = bitfield;
65 msg_task_t task_message_request_new(const char *issuer_host_name,
66 const char *mailbox, int peer_id, int index,
67 int block_index, int block_length)
70 task_message_index_new(MESSAGE_REQUEST, issuer_host_name, mailbox,
72 message_t message = MSG_task_get_data(task);
73 message->block_index = block_index;
74 message->block_length = block_length;
78 msg_task_t task_message_piece_new(const char *issuer_host_name,
79 const char *mailbox, int peer_id, int index,
80 int stalled, int block_index,
81 int block_length, int block_size)
84 task_message_index_new(MESSAGE_PIECE, issuer_host_name, mailbox, peer_id,
85 index, block_length * block_size);
86 message_t message = MSG_task_get_data(task);
87 message->stalled = stalled;
88 message->block_index = block_index;
89 message->block_length = block_length;
93 void task_message_free(void *task)
95 message_t message = MSG_task_get_data(task);
97 MSG_task_destroy(task);
100 int task_message_size(e_message_type type)
104 case MESSAGE_HANDSHAKE: size = MESSAGE_HANDSHAKE_SIZE; break;
105 case MESSAGE_CHOKE: size = MESSAGE_CHOKE_SIZE; break;
106 case MESSAGE_UNCHOKE: size = MESSAGE_UNCHOKE_SIZE; break;
107 case MESSAGE_INTERESTED: size = MESSAGE_INTERESTED_SIZE; break;
108 case MESSAGE_NOTINTERESTED: size = MESSAGE_INTERESTED_SIZE; break;
109 case MESSAGE_HAVE: size = MESSAGE_HAVE_SIZE; break;
110 case MESSAGE_BITFIELD: size = MESSAGE_BITFIELD_SIZE; break;
111 case MESSAGE_REQUEST: size = MESSAGE_REQUEST_SIZE; break;
112 case MESSAGE_PIECE: size = MESSAGE_PIECE_SIZE; break;