1 /* messaging - Function related to messaging code specific to RL */
3 /* Copyright (c) 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "gras/Msg/msg_private.h"
12 #include "gras/DataDesc/datadesc_interface.h"
13 #include "gras/Transport/transport_interface.h" /* gras_trp_send/recv */
15 XBT_LOG_EXTERNAL_CATEGORY(gras_msg);
16 XBT_LOG_DEFAULT_CATEGORY(gras_msg);
18 void gras_msg_send_ext(gras_socket_t sock,
19 e_gras_msg_kind_t kind,
21 gras_msgtype_t msgtype, void *payload)
24 static gras_datadesc_type_t string_type = NULL;
25 static gras_datadesc_type_t ulong_type = NULL;
26 char c_kind = (char) kind;
28 xbt_assert0(msgtype, "Cannot send the NULL message");
31 string_type = gras_datadesc_by_name("string");
32 xbt_assert(string_type);
35 ulong_type = gras_datadesc_by_name("unsigned long int");
36 xbt_assert(ulong_type);
39 DEBUG3("send '%s' to %s:%d", msgtype->name,
40 gras_socket_peer_name(sock), gras_socket_peer_port(sock));
41 gras_trp_send(sock, _GRAS_header, 6, 1 /* stable */ );
42 gras_trp_send(sock, &c_kind, 1, 1 /* stable */ );
44 case e_gras_msg_kind_oneway:
47 case e_gras_msg_kind_rpccall:
48 case e_gras_msg_kind_rpcanswer:
49 case e_gras_msg_kind_rpcerror:
50 gras_datadesc_send(sock, ulong_type, &ID);
54 THROW1(unknown_error, 0, "Unknown msg kind %d", kind);
57 gras_datadesc_send(sock, string_type, &msgtype->name);
58 if (kind == e_gras_msg_kind_rpcerror) {
59 /* error on remote host, carfull, payload is an exception */
60 gras_datadesc_send(sock, gras_datadesc_by_name("ex_t"), payload);
61 } else if (kind == e_gras_msg_kind_rpcanswer) {
62 if (msgtype->answer_type)
63 gras_datadesc_send(sock, msgtype->answer_type, payload);
66 if (msgtype->ctn_type)
67 gras_datadesc_send(sock, msgtype->ctn_type, payload);
73 const char *hexa_str(unsigned char *data, int size, int downside);
77 * receive the next message on the given socket.
79 void gras_msg_recv(gras_socket_t sock, gras_msg_t msg)
83 static gras_datadesc_type_t string_type = NULL;
84 static gras_datadesc_type_t ulong_type = NULL;
88 char *msg_name = NULL;
91 xbt_assert1(!gras_socket_is_meas(sock),
92 "Asked to receive a message on the measurement socket %p",
95 string_type = gras_datadesc_by_name("string");
96 xbt_assert(string_type);
99 ulong_type = gras_datadesc_by_name("unsigned long int");
100 xbt_assert(ulong_type);
105 gras_trp_recv(sock, header, 6);
106 gras_trp_recv(sock, &c_kind, 1);
107 msg->kind = (e_gras_msg_kind_t) c_kind;
110 RETHROW0("Exception caught while trying to get the mesage header: %s");
113 for (cpt = 0; cpt < 4; cpt++)
114 if (header[cpt] != _GRAS_header[cpt])
115 THROW2(mismatch_error, 0,
116 "Incoming bytes do not look like a GRAS message (header='%s' not '%.4s')",
117 hexa_str((unsigned char *) header, 4, 0), _GRAS_header);
118 if (header[4] != _GRAS_header[4])
119 THROW2(mismatch_error, 0, "GRAS protocol mismatch (got %d, use %d)",
120 (int) header[4], (int) _GRAS_header[4]);
121 r_arch = (int) header[5];
124 case e_gras_msg_kind_oneway:
127 case e_gras_msg_kind_rpccall:
128 case e_gras_msg_kind_rpcanswer:
129 case e_gras_msg_kind_rpcerror:
130 gras_datadesc_recv(sock, ulong_type, r_arch, &msg->ID);
137 gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
139 ("Handle an incoming message '%s' (%s) using protocol %d (remote is %s)",
140 msg_name, e_gras_msg_kind_names[msg->kind], (int) header[4],
141 gras_datadesc_arch_name(r_arch));
145 (gras_msgtype_t) xbt_set_get_by_name(_gras_msgtype_set, msg_name);
147 /* FIXME: Survive unknown messages */
148 if (e.category == not_found_error) {
150 THROW1(not_found_error, 0,
151 "Received an unknown message: %s (FIXME: should survive to these)",
155 ("Exception caught while retrieving the type associated to messages '%s' : %s",
160 if (msg->kind == e_gras_msg_kind_rpcerror) {
161 /* error on remote host. Carfull with that exception, eugene */
162 msg->payl_size = gras_datadesc_size(gras_datadesc_by_name("ex_t"));
163 msg->payl = xbt_malloc(msg->payl_size);
164 gras_datadesc_recv(sock, gras_datadesc_by_name("ex_t"), r_arch,
167 } else if (msg->kind == e_gras_msg_kind_rpcanswer) {
169 if (msg->type->answer_type) {
170 msg->payl_size = gras_datadesc_size(msg->type->answer_type);
171 xbt_assert2(msg->payl_size > 0,
173 "Dynamic array as payload is forbided for now (FIXME?).",
174 "Reference to dynamic array is allowed.");
175 msg->payl = xbt_malloc(msg->payl_size);
176 gras_datadesc_recv(sock, msg->type->answer_type, r_arch, msg->payl);
182 /* regular message */
183 if (msg->type->ctn_type) {
184 msg->payl_size = gras_datadesc_size(msg->type->ctn_type);
185 xbt_assert2(msg->payl_size > 0,
187 "Dynamic array as payload is forbided for now (FIXME?).",
188 "Reference to dynamic array is allowed.");
189 msg->payl = xbt_malloc(msg->payl_size);
190 gras_datadesc_recv(sock, msg->type->ctn_type, r_arch, msg->payl);