3 /* messaging - Function related to messaging code specific to RL */
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. */
11 #include "gras/Msg/msg_private.h"
13 #include "gras/DataDesc/datadesc_interface.h"
14 #include "gras/Transport/transport_interface.h" /* gras_trp_send/recv */
16 XBT_LOG_EXTERNAL_CATEGORY(gras_msg);
17 XBT_LOG_DEFAULT_CATEGORY(gras_msg);
19 void gras_msg_send_ext(gras_socket_t sock,
20 e_gras_msg_kind_t kind,
21 gras_msgtype_t msgtype,
24 static gras_datadesc_type_t string_type=NULL;
25 char c_kind=(char)kind;
29 "Cannot send the NULL message (did msgtype_by_name fail?)");
32 string_type = gras_datadesc_by_name("string");
33 xbt_assert(string_type);
36 DEBUG3("send '%s' to %s:%d", msgtype->name,
37 gras_socket_peer_name(sock),gras_socket_peer_port(sock));
38 gras_trp_send(sock, _GRAS_header, 6, 1 /* stable */);
39 gras_trp_send(sock, &c_kind, 1, 1 /* stable */);
41 gras_datadesc_send(sock, string_type, &msgtype->name);
42 if (msgtype->ctn_type)
43 gras_datadesc_send(sock, msgtype->ctn_type, payload);
48 * receive the next message on the given socket.
51 gras_msg_recv(gras_socket_t sock,
55 static gras_datadesc_type_t string_type=NULL;
62 xbt_assert1(!gras_socket_is_meas(sock),
63 "Asked to receive a message on the measurement socket %p", sock);
65 string_type=gras_datadesc_by_name("string");
66 xbt_assert(string_type);
70 gras_trp_recv(sock, header, 6);
71 gras_trp_recv(sock, &c_kind, 1);
72 msg->kind=(e_gras_msg_kind_t)c_kind;
74 RETHROW1("Exception caught while trying to get the mesage header on socket %p: %s",
78 for (cpt=0; cpt<4; cpt++)
79 if (header[cpt] != _GRAS_header[cpt])
80 THROW2(mismatch_error,0,
81 "Incoming bytes do not look like a GRAS message (header='%.4s' not '%.4s')",header,_GRAS_header);
82 if (header[4] != _GRAS_header[4])
83 THROW2(mismatch_error,0,"GRAS protocol mismatch (got %d, use %d)",
84 (int)header[4], (int)_GRAS_header[4]);
85 r_arch = (int)header[5];
86 DEBUG2("Handle an incoming message using protocol %d (remote is %s)",
87 (int)header[4],gras_datadesc_arch_name(r_arch));
89 gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
91 msg->type = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set,msg_name);
93 /* FIXME: Survive unknown messages */
94 RETHROW1("Exception caught while retrieving the type associated to messages '%s' : %s",
99 if (msg->type->ctn_type) {
100 msg->payl_size=gras_datadesc_size(msg->type->ctn_type);
101 xbt_assert2(msg->payl_size > 0,
103 "Dynamic array as payload is forbided for now (FIXME?).",
104 "Reference to dynamic array is allowed.");
105 msg->payl = xbt_malloc(msg->payl_size);
106 gras_datadesc_recv(sock, msg->type->ctn_type, r_arch, msg->payl);