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 "gras/Virtu/virtu_sg.h"
14 #include "gras/Msg/msg_private.h"
16 #include "gras/DataDesc/datadesc_interface.h"
17 #include "gras/Transport/transport_interface.h" /* gras_trp_chunk_send/recv */
18 #include "gras/Transport/transport_private.h" /* sock->data */
20 XBT_LOG_EXTERNAL_CATEGORY(gras_msg);
21 XBT_LOG_DEFAULT_CATEGORY(gras_msg);
23 /** \brief Send the data pointed by \a payload as a message of type
24 * \a msgtype to the peer \a sock */
26 gras_msg_send(gras_socket_t sock,
27 gras_msgtype_t msgtype,
31 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
34 xbt_assert1(!gras_socket_is_meas(sock),
35 "Asked to send a message on the measurement socket %p", sock);
37 msg=xbt_new0(s_gras_msg_t,1);
40 msg->payload=xbt_malloc(gras_datadesc_size(msgtype->ctn_type));
41 if (msgtype->ctn_type)
42 msg->payload_size=gras_datadesc_copy(msgtype->ctn_type,payload,msg->payload);
44 task=MSG_task_create(msgtype->name,0,
45 ((double)msg->payload_size)/(1024.0*1024.0),msg);
47 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK)
48 THROW0(system_error,0,"Problem during the MSG_task_put");
52 * receive the next message on the given socket.
55 gras_msg_recv(gras_socket_t sock,
56 gras_msgtype_t *msgtype,
61 /* gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;*/
63 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
65 xbt_assert1(!gras_socket_is_meas(sock),
66 "Asked to receive a message on the measurement socket %p", sock);
68 if (MSG_task_get(&task, pd->chan) != MSG_OK)
69 THROW0(system_error,0,"Error in MSG_task_get()");
71 msg = MSG_task_get_data(task);
72 *msgtype = gras_msgtype_by_id(msg->type->code);
73 *payload = msg->payload;
74 *payload_size = msg->payload_size;
77 if (MSG_task_destroy(task) != MSG_OK)
78 THROW0(system_error,0,"Error in MSG_task_destroy()");
85 static gras_datadesc_type_t string_type=NULL;
92 string_type=gras_datadesc_by_name("string");
93 xbt_assert(string_type);
97 gras_trp_chunk_recv(sock, header, 6);
99 RETHROW1("Exception caught while trying to get the mesage header on socket %p: %s",
103 for (cpt=0; cpt<4; cpt++)
104 if (header[cpt] != _GRAS_header[cpt])
105 THROW2(mismatch_error,0,
106 "Incoming bytes do not look like a GRAS message (header='%.4s' not '%.4s')",header,_GRAS_header);
107 if (header[4] != _GRAS_header[4])
108 THROW2(mismatch_error,0,"GRAS protocol mismatch (got %d, use %d)",
109 (int)header[4], (int)_GRAS_header[4]);
110 r_arch = (int)header[5];
111 DEBUG2("Handle an incoming message using protocol %d (remote is %s)",
112 (int)header[4],gras_datadesc_arch_name(r_arch));
114 gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
116 *msgtype = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set,msg_name);
118 / * FIXME: Survive unknown messages * /
119 RETHROW1("Exception caught while retrieving the type associated to messages '%s' : %s",
124 if ((*msgtype)->ctn_type) {
125 *payload_size=gras_datadesc_size((*msgtype)->ctn_type);
126 xbt_assert2(*payload_size > 0,
128 "Dynamic array as payload is forbided for now (FIXME?).",
129 "Reference to dynamic array is allowed.");
130 *payload = xbt_malloc(*payload_size);
131 gras_datadesc_recv(sock, (*msgtype)->ctn_type, r_arch, *payload);