3 /* messaging - Function related to messaging code specific to SG */
5 /* Copyright (c) 2003-2005 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
12 //#include "msg/msg.h"
13 #include "gras/Virtu/virtu_sg.h"
15 #include "gras/Msg/msg_private.h"
17 #include "gras/DataDesc/datadesc_interface.h"
18 #include "gras/Transport/transport_interface.h" /* gras_trp_chunk_send/recv */
19 #include "gras/Transport/transport_private.h" /* sock->data */
21 XBT_LOG_EXTERNAL_CATEGORY(gras_msg);
22 XBT_LOG_DEFAULT_CATEGORY(gras_msg);
24 /** \brief Send the data pointed by \a payload as a message of type
25 * \a msgtype to the peer \a sock */
27 gras_msg_send(gras_socket_t sock,
28 gras_msgtype_t msgtype,
32 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
35 xbt_assert1(!gras_socket_is_meas(sock),
36 "Asked to send a message on the measurement socket %p", sock);
38 msg=xbt_new0(s_gras_msg_t,1);
41 msg->payload=xbt_malloc(gras_datadesc_size(msgtype->ctn_type));
42 if (msgtype->ctn_type)
43 msg->payload_size=gras_datadesc_copy(msgtype->ctn_type,payload,msg->payload);
45 task=MSG_task_create(msgtype->name,0,
46 ((double)msg->payload_size)/(1024.0*1024.0),msg);
48 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK)
49 THROW0(system_error,0,"Problem during the MSG_task_put");
53 * receive the next message on the given socket.
56 gras_msg_recv(gras_socket_t sock,
57 gras_msgtype_t *msgtype,
62 /* gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;*/
64 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
66 xbt_assert1(!gras_socket_is_meas(sock),
67 "Asked to receive a message on the measurement socket %p", sock);
69 if (MSG_task_get(&task, pd->chan) != MSG_OK)
70 THROW0(system_error,0,"Error in MSG_task_get()");
72 msg = MSG_task_get_data(task);
73 *msgtype = gras_msgtype_by_id(msg->type->code);
74 *payload = msg->payload;
75 *payload_size = msg->payload_size;
78 if (MSG_task_destroy(task) != MSG_OK)
79 THROW0(system_error,0,"Error in MSG_task_destroy()");
86 static gras_datadesc_type_t string_type=NULL;
93 string_type=gras_datadesc_by_name("string");
94 xbt_assert(string_type);
98 gras_trp_chunk_recv(sock, header, 6);
100 RETHROW1("Exception caught while trying to get the mesage header on socket %p: %s",
104 for (cpt=0; cpt<4; cpt++)
105 if (header[cpt] != _GRAS_header[cpt])
106 THROW2(mismatch_error,0,
107 "Incoming bytes do not look like a GRAS message (header='%.4s' not '%.4s')",header,_GRAS_header);
108 if (header[4] != _GRAS_header[4])
109 THROW2(mismatch_error,0,"GRAS protocol mismatch (got %d, use %d)",
110 (int)header[4], (int)_GRAS_header[4]);
111 r_arch = (int)header[5];
112 DEBUG2("Handle an incoming message using protocol %d (remote is %s)",
113 (int)header[4],gras_datadesc_arch_name(r_arch));
115 gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
117 *msgtype = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set,msg_name);
119 / * FIXME: Survive unknown messages * /
120 RETHROW1("Exception caught while retrieving the type associated to messages '%s' : %s",
125 if ((*msgtype)->ctn_type) {
126 *payload_size=gras_datadesc_size((*msgtype)->ctn_type);
127 xbt_assert2(*payload_size > 0,
129 "Dynamic array as payload is forbided for now (FIXME?).",
130 "Reference to dynamic array is allowed.");
131 *payload = xbt_malloc(*payload_size);
132 gras_datadesc_recv(sock, (*msgtype)->ctn_type, r_arch, *payload);