-/* $Id$ */
-
/* messaging - Function related to messaging code specific to RL */
-/* Copyright (c) 2003-2005 Martin Quinson. All rights reserved. */
+/* Copyright (c) 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "xbt/ex.h"
+#include "xbt/datadesc.h"
+#include "xbt/datadesc/datadesc_interface.h"
+#include "xbt/socket.h"
#include "gras/Msg/msg_private.h"
-
-#include "gras/DataDesc/datadesc_interface.h"
-#include "gras/Transport/transport_interface.h" /* gras_trp_chunk_send/recv */
+#include "gras/Transport/transport_interface.h"
XBT_LOG_EXTERNAL_CATEGORY(gras_msg);
XBT_LOG_DEFAULT_CATEGORY(gras_msg);
-/** \brief Send the data pointed by \a payload as a message of type
- * \a msgtype to the peer \a sock */
-void
-gras_msg_send(gras_socket_t sock,
- gras_msgtype_t msgtype,
- void *payload) {
+void gras_msg_recv(xbt_socket_t sock, gras_msg_t msg);
+
+gras_msg_t gras_msg_recv_any(void)
+{
+ gras_msg_t msg = xbt_new0(s_gras_msg_t, 1);
+ msg->expe = gras_trp_select(-1);
+ XBT_DEBUG("Select returned something");
+ gras_msg_recv(msg->expe, msg);
+ return msg;
+}
+
+void gras_msg_send_ext(xbt_socket_t sock,
+ e_gras_msg_kind_t kind,
+ unsigned long int ID,
+ gras_msgtype_t msgtype, void *payload)
+{
- static gras_datadesc_type_t string_type=NULL;
+ static xbt_datadesc_type_t string_type = NULL;
+ static xbt_datadesc_type_t ulong_type = NULL;
+ char c_kind = (char) kind;
- if (!msgtype)
- THROW0(arg_error,0,
- "Cannot send the NULL message (did msgtype_by_name fail?)");
+ xbt_assert(msgtype, "Cannot send the NULL message");
if (!string_type) {
- string_type = gras_datadesc_by_name("string");
+ string_type = xbt_datadesc_by_name("string");
xbt_assert(string_type);
}
+ if (!ulong_type) {
+ ulong_type = xbt_datadesc_by_name("unsigned long int");
+ xbt_assert(ulong_type);
+ }
- DEBUG3("send '%s' to %s:%d", msgtype->name,
- gras_socket_peer_name(sock),gras_socket_peer_port(sock));
- gras_trp_chunk_send(sock, _GRAS_header, 6);
+ XBT_DEBUG("send '%s' to %s:%d", msgtype->name,
+ xbt_socket_peer_name(sock), xbt_socket_peer_port(sock));
+ xbt_trp_send(sock, _GRAS_header, 6, 1 /* stable */ );
+ xbt_trp_send(sock, &c_kind, 1, 1 /* stable */ );
+ switch (kind) {
+ case e_gras_msg_kind_oneway:
+ break;
+
+ case e_gras_msg_kind_rpccall:
+ case e_gras_msg_kind_rpcanswer:
+ case e_gras_msg_kind_rpcerror:
+ xbt_datadesc_send(sock, ulong_type, &ID);
+ break;
+
+ default:
+ THROWF(unknown_error, 0, "Unknown msg kind %d", (int)kind);
+ }
- gras_datadesc_send(sock, string_type, &msgtype->name);
- if (msgtype->ctn_type)
- gras_datadesc_send(sock, msgtype->ctn_type, payload);
- gras_trp_flush(sock);
+ xbt_datadesc_send(sock, string_type, &msgtype->name);
+ if (kind == e_gras_msg_kind_rpcerror) {
+ /* error on remote host, carfull, payload is an exception */
+ xbt_datadesc_send(sock, xbt_datadesc_by_name("ex_t"), payload);
+ } else if (kind == e_gras_msg_kind_rpcanswer) {
+ if (msgtype->answer_type)
+ xbt_datadesc_send(sock, msgtype->answer_type, payload);
+ } else {
+ /* regular message */
+ if (msgtype->ctn_type)
+ xbt_datadesc_send(sock, msgtype->ctn_type, payload);
+ }
+
+ xbt_trp_flush(sock);
}
+
+const char *hexa_str(unsigned char *data, int size, int downside);
+
+
/*
- * receive the next message on the given socket.
+ * receive the next message on the given socket.
*/
-void
-gras_msg_recv(gras_socket_t sock,
- gras_msgtype_t *msgtype,
- void **payload,
- int *payload_size) {
+void gras_msg_recv(xbt_socket_t sock, gras_msg_t msg)
+{
xbt_ex_t e;
- static gras_datadesc_type_t string_type=NULL;
+ static xbt_datadesc_type_t string_type = NULL;
+ static xbt_datadesc_type_t ulong_type = NULL;
char header[6];
int cpt;
int r_arch;
- char *msg_name=NULL;
+ char *msg_name = NULL;
+ char c_kind;
- xbt_assert1(!gras_socket_is_meas(sock),
- "Asked to receive a message on the measurement socket %p", sock);
+ xbt_assert(!xbt_socket_is_meas(sock),
+ "Asked to receive a message on the measurement socket %p",
+ sock);
if (!string_type) {
- string_type=gras_datadesc_by_name("string");
+ string_type = xbt_datadesc_by_name("string");
xbt_assert(string_type);
}
-
+ if (!ulong_type) {
+ ulong_type = xbt_datadesc_by_name("unsigned long int");
+ xbt_assert(ulong_type);
+ }
+
+
TRY {
- gras_trp_chunk_recv(sock, header, 6);
- } CATCH(e) {
- RETHROW1("Exception caught while trying to get the mesage header on socket %p: %s",
- sock);
+ xbt_trp_recv(sock, header, 6);
+ xbt_trp_recv(sock, &c_kind, 1);
+ msg->kind = (e_gras_msg_kind_t) c_kind;
+ }
+ CATCH_ANONYMOUS {
+ RETHROWF
+ ("Exception caught while trying to get the message header: %s");
}
- for (cpt=0; cpt<4; cpt++)
+ for (cpt = 0; cpt < 4; cpt++)
if (header[cpt] != _GRAS_header[cpt])
- THROW2(mismatch_error,0,
- "Incoming bytes do not look like a GRAS message (header='%.4s' not '%.4s')",header,_GRAS_header);
- if (header[4] != _GRAS_header[4])
- THROW2(mismatch_error,0,"GRAS protocol mismatch (got %d, use %d)",
- (int)header[4], (int)_GRAS_header[4]);
- r_arch = (int)header[5];
- DEBUG2("Handle an incoming message using protocol %d (remote is %s)",
- (int)header[4],gras_datadesc_arch_name(r_arch));
-
- gras_datadesc_recv(sock, string_type, r_arch, &msg_name);
+ THROWF(mismatch_error, 0,
+ "Incoming bytes do not look like a GRAS message (header='%s' not '%.4s')",
+ hexa_str((unsigned char *) header, 4, 0), _GRAS_header);
+ if (header[4] != _GRAS_header[4])
+ THROWF(mismatch_error, 0, "GRAS protocol mismatch (got %d, use %d)",
+ (int) header[4], (int) _GRAS_header[4]);
+ r_arch = (int) header[5];
+
+ switch (msg->kind) {
+ case e_gras_msg_kind_oneway:
+ break;
+
+ case e_gras_msg_kind_rpccall:
+ case e_gras_msg_kind_rpcanswer:
+ case e_gras_msg_kind_rpcerror:
+ xbt_datadesc_recv(sock, ulong_type, r_arch, &msg->ID);
+ break;
+
+ default:
+ THROW_IMPOSSIBLE;
+ }
+
+ xbt_datadesc_recv(sock, string_type, r_arch, &msg_name);
+ XBT_DEBUG
+ ("Handle an incoming message '%s' (%s) using protocol %d (remote is %s)",
+ msg_name, e_gras_msg_kind_names[msg->kind], (int) header[4],
+ xbt_datadesc_arch_name(r_arch));
+
TRY {
- *msgtype = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set,msg_name);
- } CATCH(e) {
+ msg->type =
+ (gras_msgtype_t) xbt_set_get_by_name(_gras_msgtype_set, msg_name);
+ }
+ CATCH(e) {
/* FIXME: Survive unknown messages */
- RETHROW1("Exception caught while retrieving the type associated to messages '%s' : %s",
- msg_name);
+ if (e.category == not_found_error) {
+ xbt_ex_free(e);
+ THROWF(not_found_error, 0,
+ "Received an unknown message: %s (FIXME: should survive to these)",
+ msg_name);
+ } else
+ RETHROWF
+ ("Exception caught while retrieving the type associated to messages '%s' : %s",
+ msg_name);
}
free(msg_name);
- if ((*msgtype)->ctn_type) {
- *payload_size=gras_datadesc_size((*msgtype)->ctn_type);
- xbt_assert2(*payload_size > 0,
- "%s %s",
- "Dynamic array as payload is forbided for now (FIXME?).",
- "Reference to dynamic array is allowed.");
- *payload = xbt_malloc(*payload_size);
- gras_datadesc_recv(sock, (*msgtype)->ctn_type, r_arch, *payload);
+ if (msg->kind == e_gras_msg_kind_rpcerror) {
+ /* error on remote host. Carfull with that exception, eugene */
+ msg->payl_size = xbt_datadesc_size(xbt_datadesc_by_name("ex_t"));
+ msg->payl = xbt_malloc(msg->payl_size);
+ xbt_datadesc_recv(sock, xbt_datadesc_by_name("ex_t"), r_arch,
+ msg->payl);
+
+ } else if (msg->kind == e_gras_msg_kind_rpcanswer) {
+ /* answer to RPC */
+ if (msg->type->answer_type) {
+ msg->payl_size = xbt_datadesc_size(msg->type->answer_type);
+ xbt_assert(msg->payl_size > 0,
+ "%s %s",
+ "Dynamic array as payload is forbided for now (FIXME?).",
+ "Reference to dynamic array is allowed.");
+ msg->payl = xbt_malloc(msg->payl_size);
+ xbt_datadesc_recv(sock, msg->type->answer_type, r_arch, msg->payl);
+ } else {
+ msg->payl = NULL;
+ msg->payl_size = 0;
+ }
} else {
- *payload = NULL;
- *payload_size = 0;
+ /* regular message */
+ if (msg->type->ctn_type) {
+ msg->payl_size = xbt_datadesc_size(msg->type->ctn_type);
+ xbt_assert(msg->payl_size > 0,
+ "%s %s",
+ "Dynamic array as payload is forbided for now (FIXME?).",
+ "Reference to dynamic array is allowed.");
+ msg->payl = xbt_malloc(msg->payl_size);
+ xbt_datadesc_recv(sock, msg->type->ctn_type, r_arch, msg->payl);
+ } else {
+ msg->payl = NULL;
+ msg->payl_size = 0;
+ }
}
}
