1 /* messaging - Function related to messaging code specific to SG */
3 /* Copyright (c) 2005, 2006, 2007, 2008, 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. */
11 #include "gras/Virtu/virtu_sg.h"
13 #include "gras/Msg/msg_private.h"
15 #include "gras/DataDesc/datadesc_interface.h"
16 #include "gras/Transport/transport_interface.h" /* gras_trp_chunk_send/recv */
17 #include "gras/Transport/transport_private.h" /* sock->data */
19 XBT_LOG_EXTERNAL_CATEGORY(gras_msg);
20 XBT_LOG_DEFAULT_CATEGORY(gras_msg);
22 typedef void *gras_trp_bufdata_;
24 void gras_msg_send_ext(gras_socket_t sock,
25 e_gras_msg_kind_t kind,
27 gras_msgtype_t msgtype, void *payload)
30 smx_action_t act; /* simix action */
31 gras_trp_sg_sock_data_t *sock_data;
33 gras_trp_procdata_t trp_remote_proc;
34 gras_msg_procdata_t msg_remote_proc;
35 gras_msg_t msg; /* message to send */
36 int whole_payload_size = 0; /* msg->payload_size is used to memcpy the payload.
37 This is used to report the load onto the simulator. It also counts the size of pointed stuff */
39 sock_data = (gras_trp_sg_sock_data_t *) sock->data;
41 hd = (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
43 xbt_assert1(!gras_socket_is_meas(sock),
44 "Asked to send a message on the measurement socket %p", sock);
46 /*initialize gras message */
47 msg = xbt_new(s_gras_msg_t, 1);
52 if (kind == e_gras_msg_kind_rpcerror) {
53 /* error on remote host, carfull, payload is an exception */
54 msg->payl_size = gras_datadesc_size(gras_datadesc_by_name("ex_t"));
55 msg->payl = xbt_malloc(msg->payl_size);
56 whole_payload_size = gras_datadesc_memcpy(gras_datadesc_by_name("ex_t"),
58 } else if (kind == e_gras_msg_kind_rpcanswer) {
59 msg->payl_size = gras_datadesc_size(msgtype->answer_type);
61 msg->payl = xbt_malloc(msg->payl_size);
65 if (msgtype->answer_type)
66 whole_payload_size = gras_datadesc_memcpy(msgtype->answer_type,
69 msg->payl_size = gras_datadesc_size(msgtype->ctn_type);
70 msg->payl = msg->payl_size ? xbt_malloc(msg->payl_size) : NULL;
71 if (msgtype->ctn_type)
72 whole_payload_size = gras_datadesc_memcpy(msgtype->ctn_type,
76 /* put the selectable socket on the queue */
77 trp_remote_proc = (gras_trp_procdata_t)
78 gras_libdata_by_name_from_remote("gras_trp", sock_data->to_process);
80 xbt_queue_push(trp_remote_proc->msg_selectable_sockets, &sock);
82 /* put message on msg_queue */
83 msg_remote_proc = (gras_msg_procdata_t)
84 gras_libdata_by_name_from_remote("gras_msg", sock_data->to_process);
85 xbt_fifo_push(msg_remote_proc->msg_to_receive_queue, msg);
87 /* wait for the receiver */
88 SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
90 /* creates simix action and waits its ends, waits in the sender host
92 act = SIMIX_action_communicate(SIMIX_host_self(),
93 sock_data->to_host, msgtype->name,
94 (double) whole_payload_size, -1);
95 SIMIX_register_action_to_condition(act, sock_data->cond);
97 VERB5("Sending to %s(%s) a message type '%s' kind '%s' ID %lu",
98 SIMIX_host_get_name(sock_data->to_host),
99 SIMIX_process_get_name(sock_data->to_process),
100 msg->type->name, e_gras_msg_kind_names[msg->kind], msg->ID);
102 SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
103 SIMIX_unregister_action_to_condition(act, sock_data->cond);
104 /* error treatmeant (FIXME) */
106 /* cleanup structures */
107 SIMIX_action_destroy(act);
108 SIMIX_mutex_unlock(sock_data->mutex);
110 VERB0("Message sent");
115 * receive the next message on the given socket.
117 void gras_msg_recv(gras_socket_t sock, gras_msg_t msg)
120 gras_trp_sg_sock_data_t *sock_data;
121 gras_trp_sg_sock_data_t *remote_sock_data;
122 gras_hostdata_t *remote_hd;
124 gras_msg_procdata_t msg_procdata =
125 (gras_msg_procdata_t) gras_libdata_by_name("gras_msg");
127 xbt_assert1(!gras_socket_is_meas(sock),
128 "Asked to receive a message on the measurement socket %p",
131 xbt_assert0(msg, "msg is an out parameter of gras_msg_recv...");
133 sock_data = (gras_trp_sg_sock_data_t *) sock->data;
135 ((gras_trp_sg_sock_data_t *) sock->data)->to_socket->data;
136 DEBUG3("Remote host %s, Remote Port: %d Local port %d",
137 SIMIX_host_get_name(sock_data->to_host), sock->peer_port,
139 remote_hd = (gras_hostdata_t *) SIMIX_host_get_data(sock_data->to_host);
141 if (xbt_fifo_size(msg_procdata->msg_to_receive_queue) == 0) {
144 DEBUG1("Size msg_to_receive buffer: %d",
145 xbt_fifo_size(msg_procdata->msg_to_receive_queue));
146 msg_got = xbt_fifo_shift(msg_procdata->msg_to_receive_queue);
148 SIMIX_mutex_lock(remote_sock_data->mutex);
149 /* ok, I'm here, you can continuate the communication */
150 SIMIX_cond_signal(remote_sock_data->cond);
152 /* wait for communication end */
153 SIMIX_cond_wait(remote_sock_data->cond, remote_sock_data->mutex);
155 msg_got->expe = msg->expe;
156 memcpy(msg, msg_got, sizeof(s_gras_msg_t));
158 SIMIX_mutex_unlock(remote_sock_data->mutex);
160 VERB3("Received a message type '%s' kind '%s' ID %lu", // from %s",
161 msg->type->name, e_gras_msg_kind_names[msg->kind], msg->ID);