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_recv(gras_socket_t sock, gras_msg_t msg);
20 gras_msg_t gras_msg_recv_any(void) {
21 gras_msg_t msg = xbt_new0(s_gras_msg_t,1);
22 msg->expe = gras_trp_select(-1);
23 DEBUG0("Select returned something");
24 gras_msg_recv(msg->expe, msg);
28 void gras_msg_send_ext(gras_socket_t sock,
29 e_gras_msg_kind_t kind,
31 gras_msgtype_t msgtype, void *payload)
34 static gras_datadesc_type_t string_type = NULL;
35 static gras_datadesc_type_t ulong_type = NULL;
36 char c_kind = (char) kind;
38 xbt_assert0(msgtype, "Cannot send the NULL message");
41 string_type = gras_datadesc_by_name("string");
42 xbt_assert(string_type);
45 ulong_type = gras_datadesc_by_name("unsigned long int");
46 xbt_assert(ulong_type);
49 DEBUG3("send '%s' to %s:%d", msgtype->name,
50 gras_socket_peer_name(sock), gras_socket_peer_port(sock));
51 gras_trp_send(sock, _GRAS_header, 6, 1 /* stable */ );
52 gras_trp_send(sock, &c_kind, 1, 1 /* stable */ );
54 case e_gras_msg_kind_oneway:
57 case e_gras_msg_kind_rpccall:
58 case e_gras_msg_kind_rpcanswer:
59 case e_gras_msg_kind_rpcerror:
60 gras_datadesc_send(sock, ulong_type, &ID);
64 THROW1(unknown_error, 0, "Unknown msg kind %d", kind);
67 gras_datadesc_send(sock, string_type, &msgtype->name);
68 if (kind == e_gras_msg_kind_rpcerror) {
69 /* error on remote host, carfull, payload is an exception */
70 gras_datadesc_send(sock, gras_datadesc_by_name("ex_t"), payload);
71 } else if (kind == e_gras_msg_kind_rpcanswer) {
72 if (msgtype->answer_type)
73 gras_datadesc_send(sock, msgtype->answer_type, payload);
76 if (msgtype->ctn_type)
77 gras_datadesc_send(sock, msgtype->ctn_type, payload);
83 const char *hexa_str(unsigned char *data, int size, int downside);
87 * receive the next message on the given socket.
89 void gras_msg_recv(gras_socket_t sock, gras_msg_t msg)
93 static gras_datadesc_type_t string_type = NULL;
94 static gras_datadesc_type_t ulong_type = NULL;
98 char *msg_name = NULL;
101 xbt_assert1(!gras_socket_is_meas(sock),
102 "Asked to receive a message on the measurement socket %p",
105 string_type = gras_datadesc_by_name("string");
106 xbt_assert(string_type);
109 ulong_type = gras_datadesc_by_name("unsigned long int");
110 xbt_assert(ulong_type);
115 gras_trp_recv(sock, header, 6);
116 gras_trp_recv(sock, &c_kind, 1);
117 msg->kind = (e_gras_msg_kind_t) c_kind;
120 RETHROW0("Exception caught while trying to get the mesage header: %s");
123 for (cpt = 0; cpt < 4; cpt++)
124 if (header[cpt] != _GRAS_header[cpt])
125 THROW2(mismatch_error, 0,
126 "Incoming bytes do not look like a GRAS message (header='%s' not '%.4s')",
127 hexa_str((unsigned char *) header, 4, 0), _GRAS_header);
128 if (header[4] != _GRAS_header[4])
129 THROW2(mismatch_error, 0, "GRAS protocol mismatch (got %d, use %d)",
130 (int) header[4], (int) _GRAS_header[4]);
131 r_arch = (int) header[5];
134 case e_gras_msg_kind_oneway:
137 case e_gras_msg_kind_rpccall:
138 case e_gras_msg_kind_rpcanswer:
139 case e_gras_msg_kind_rpcerror:
140 gras_datadesc_recv(sock, ulong_type, r_arch, &msg->ID);
147 gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
149 ("Handle an incoming message '%s' (%s) using protocol %d (remote is %s)",
150 msg_name, e_gras_msg_kind_names[msg->kind], (int) header[4],
151 gras_datadesc_arch_name(r_arch));
155 (gras_msgtype_t) xbt_set_get_by_name(_gras_msgtype_set, msg_name);
157 /* FIXME: Survive unknown messages */
158 if (e.category == not_found_error) {
160 THROW1(not_found_error, 0,
161 "Received an unknown message: %s (FIXME: should survive to these)",
165 ("Exception caught while retrieving the type associated to messages '%s' : %s",
170 if (msg->kind == e_gras_msg_kind_rpcerror) {
171 /* error on remote host. Carfull with that exception, eugene */
172 msg->payl_size = gras_datadesc_size(gras_datadesc_by_name("ex_t"));
173 msg->payl = xbt_malloc(msg->payl_size);
174 gras_datadesc_recv(sock, gras_datadesc_by_name("ex_t"), r_arch,
177 } else if (msg->kind == e_gras_msg_kind_rpcanswer) {
179 if (msg->type->answer_type) {
180 msg->payl_size = gras_datadesc_size(msg->type->answer_type);
181 xbt_assert2(msg->payl_size > 0,
183 "Dynamic array as payload is forbided for now (FIXME?).",
184 "Reference to dynamic array is allowed.");
185 msg->payl = xbt_malloc(msg->payl_size);
186 gras_datadesc_recv(sock, msg->type->answer_type, r_arch, msg->payl);
192 /* regular message */
193 if (msg->type->ctn_type) {
194 msg->payl_size = gras_datadesc_size(msg->type->ctn_type);
195 xbt_assert2(msg->payl_size > 0,
197 "Dynamic array as payload is forbided for now (FIXME?).",
198 "Reference to dynamic array is allowed.");
199 msg->payl = xbt_malloc(msg->payl_size);
200 gras_datadesc_recv(sock, msg->type->ctn_type, r_arch, msg->payl);