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,
22 gras_msgtype_t msgtype, void *payload)
25 static gras_datadesc_type_t string_type = NULL;
26 static gras_datadesc_type_t ulong_type = NULL;
27 char c_kind = (char) kind;
29 xbt_assert0(msgtype, "Cannot send the NULL message");
32 string_type = gras_datadesc_by_name("string");
33 xbt_assert(string_type);
36 ulong_type = gras_datadesc_by_name("unsigned long int");
37 xbt_assert(ulong_type);
40 DEBUG3("send '%s' to %s:%d", msgtype->name,
41 gras_socket_peer_name(sock), gras_socket_peer_port(sock));
42 gras_trp_send(sock, _GRAS_header, 6, 1 /* stable */ );
43 gras_trp_send(sock, &c_kind, 1, 1 /* stable */ );
45 case e_gras_msg_kind_oneway:
48 case e_gras_msg_kind_rpccall:
49 case e_gras_msg_kind_rpcanswer:
50 case e_gras_msg_kind_rpcerror:
51 gras_datadesc_send(sock, ulong_type, &ID);
55 THROW1(unknown_error, 0, "Unknown msg kind %d", kind);
58 gras_datadesc_send(sock, string_type, &msgtype->name);
59 if (kind == e_gras_msg_kind_rpcerror) {
60 /* error on remote host, carfull, payload is an exception */
61 gras_datadesc_send(sock, gras_datadesc_by_name("ex_t"), payload);
62 } else if (kind == e_gras_msg_kind_rpcanswer) {
63 if (msgtype->answer_type)
64 gras_datadesc_send(sock, msgtype->answer_type, payload);
67 if (msgtype->ctn_type)
68 gras_datadesc_send(sock, msgtype->ctn_type, payload);
74 const char *hexa_str(unsigned char *data, int size, int downside);
78 * receive the next message on the given socket.
80 void gras_msg_recv(gras_socket_t sock, gras_msg_t msg)
84 static gras_datadesc_type_t string_type = NULL;
85 static gras_datadesc_type_t ulong_type = NULL;
89 char *msg_name = NULL;
92 xbt_assert1(!gras_socket_is_meas(sock),
93 "Asked to receive a message on the measurement socket %p",
96 string_type = gras_datadesc_by_name("string");
97 xbt_assert(string_type);
100 ulong_type = gras_datadesc_by_name("unsigned long int");
101 xbt_assert(ulong_type);
106 gras_trp_recv(sock, header, 6);
107 gras_trp_recv(sock, &c_kind, 1);
108 msg->kind = (e_gras_msg_kind_t) c_kind;
111 RETHROW0("Exception caught while trying to get the mesage header: %s");
114 for (cpt = 0; cpt < 4; cpt++)
115 if (header[cpt] != _GRAS_header[cpt])
116 THROW2(mismatch_error, 0,
117 "Incoming bytes do not look like a GRAS message (header='%s' not '%.4s')",
118 hexa_str((unsigned char *) header, 4, 0), _GRAS_header);
119 if (header[4] != _GRAS_header[4])
120 THROW2(mismatch_error, 0, "GRAS protocol mismatch (got %d, use %d)",
121 (int) header[4], (int) _GRAS_header[4]);
122 r_arch = (int) header[5];
125 case e_gras_msg_kind_oneway:
128 case e_gras_msg_kind_rpccall:
129 case e_gras_msg_kind_rpcanswer:
130 case e_gras_msg_kind_rpcerror:
131 gras_datadesc_recv(sock, ulong_type, r_arch, &msg->ID);
138 gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
140 ("Handle an incoming message '%s' (%s) using protocol %d (remote is %s)",
141 msg_name, e_gras_msg_kind_names[msg->kind], (int) header[4],
142 gras_datadesc_arch_name(r_arch));
146 (gras_msgtype_t) xbt_set_get_by_name(_gras_msgtype_set, msg_name);
148 /* FIXME: Survive unknown messages */
149 if (e.category == not_found_error) {
151 THROW1(not_found_error, 0,
152 "Received an unknown message: %s (FIXME: should survive to these)",
156 ("Exception caught while retrieving the type associated to messages '%s' : %s",
161 if (msg->kind == e_gras_msg_kind_rpcerror) {
162 /* error on remote host. Carfull with that exception, eugene */
163 msg->payl_size = gras_datadesc_size(gras_datadesc_by_name("ex_t"));
164 msg->payl = xbt_malloc(msg->payl_size);
165 gras_datadesc_recv(sock, gras_datadesc_by_name("ex_t"), r_arch,
168 } else if (msg->kind == e_gras_msg_kind_rpcanswer) {
170 if (msg->type->answer_type) {
171 msg->payl_size = gras_datadesc_size(msg->type->answer_type);
172 xbt_assert2(msg->payl_size > 0,
174 "Dynamic array as payload is forbided for now (FIXME?).",
175 "Reference to dynamic array is allowed.");
176 msg->payl = xbt_malloc(msg->payl_size);
177 gras_datadesc_recv(sock, msg->type->answer_type, r_arch, msg->payl);
183 /* regular message */
184 if (msg->type->ctn_type) {
185 msg->payl_size = gras_datadesc_size(msg->type->ctn_type);
186 xbt_assert2(msg->payl_size > 0,
188 "Dynamic array as payload is forbided for now (FIXME?).",
189 "Reference to dynamic array is allowed.");
190 msg->payl = xbt_malloc(msg->payl_size);
191 gras_datadesc_recv(sock, msg->type->ctn_type, r_arch, msg->payl);