3 /* transport - low level communication */
5 /* Copyright (c) 2004 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. */
10 #include "gras/Transport/transport_private.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(transport,gras,"Conveying bytes over the network");
13 XBT_LOG_NEW_SUBCATEGORY(raw_trp,transport,"Conveying bytes over the network without formating");
15 static xbt_dict_t _gras_trp_plugins; /* All registered plugins */
16 static void gras_trp_plugin_free(void *p); /* free one of the plugins */
19 gras_trp_plugin_new(const char *name, gras_trp_setup_t setup) {
22 gras_trp_plugin_t *plug = xbt_new0(gras_trp_plugin_t, 1);
24 DEBUG1("Create plugin %s",name);
26 plug->name=xbt_strdup(name);
28 errcode = setup(plug);
31 /* SG plugin return mismatch when in RL mode (and vice versa) */
37 xbt_dict_set(_gras_trp_plugins,
38 name, plug, gras_trp_plugin_free);
47 void gras_trp_init(void){
48 /* make room for all plugins */
49 _gras_trp_plugins=xbt_dict_new();
52 gras_trp_plugin_new("tcp", gras_trp_tcp_setup);
53 gras_trp_plugin_new("file",gras_trp_file_setup);
54 gras_trp_plugin_new("sg",gras_trp_sg_setup);
56 /* buf is composed, so it must come after the others */
57 gras_trp_plugin_new("buf", gras_trp_buf_setup);
63 xbt_dict_free(&_gras_trp_plugins);
67 void gras_trp_plugin_free(void *p) {
68 gras_trp_plugin_t *plug = p;
73 } else if (plug->data) {
74 DEBUG1("Plugin %s lacks exit(). Free data anyway.",plug->name);
85 * gras_trp_socket_new:
87 * Malloc a new socket, and initialize it with defaults
89 void gras_trp_socket_new(int incoming,
92 gras_socket_t sock=xbt_new0(s_gras_socket_t,1);
94 DEBUG1("Create a new socket (%p)", (void*)sock);
100 sock->incoming = incoming ? 1:0;
101 sock->outgoing = incoming ? 0:1;
102 sock->accepting = incoming ? 1:0;
105 sock->peer_port = -1;
106 sock->peer_name = NULL;
111 xbt_dynar_push(gras_socketset_get(),dst);
116 * gras_socket_server_ext:
118 * Opens a server socket and make it ready to be listened to.
119 * In real life, you'll get a TCP socket.
122 gras_socket_server_ext(unsigned short port,
124 unsigned long int bufSize,
127 /* OUT */ gras_socket_t *dst) {
130 gras_trp_plugin_t *trp;
135 DEBUG2("Create a server socket from plugin %s on port %d",
136 gras_if_RL() ? "tcp" : "sg",
138 TRY(gras_trp_plugin_get_by_name("buf",&trp));
140 /* defaults settings */
141 gras_trp_socket_new(1,&sock);
144 sock->bufSize = bufSize;
147 /* Call plugin socket creation function */
148 errcode = trp->socket_server(trp, sock);
149 DEBUG3("in=%c out=%c accept=%c",
150 sock->incoming?'y':'n',
151 sock->outgoing?'y':'n',
152 sock->accepting?'y':'n');
154 if (errcode != no_error) {
165 * gras_socket_client_ext:
167 * Opens a client socket to a remote host.
168 * In real life, you'll get a TCP socket.
171 gras_socket_client_ext(const char *host,
174 unsigned long int bufSize,
177 /* OUT */ gras_socket_t *dst) {
180 gras_trp_plugin_t *trp;
185 TRY(gras_trp_plugin_get_by_name("buf",&trp));
187 DEBUG1("Create a client socket from plugin %s",gras_if_RL() ? "tcp" : "sg");
188 /* defaults settings */
189 gras_trp_socket_new(0,&sock);
191 sock->peer_port = port;
192 sock->peer_name = (char*)strdup(host?host:"localhost");
193 sock->bufSize = bufSize;
196 /* plugin-specific */
197 errcode= (*trp->socket_client)(trp, sock);
198 DEBUG3("in=%c out=%c accept=%c",
199 sock->incoming?'y':'n',
200 sock->outgoing?'y':'n',
201 sock->accepting?'y':'n');
203 if (errcode != no_error) {
214 * gras_socket_server:
216 * Opens a server socket and make it ready to be listened to.
217 * In real life, you'll get a TCP socket.
220 gras_socket_server(unsigned short port,
221 /* OUT */ gras_socket_t *dst) {
222 return gras_socket_server_ext(port,32,0,dst);
226 * gras_socket_client:
228 * Opens a client socket to a remote host.
229 * In real life, you'll get a TCP socket.
232 gras_socket_client(const char *host,
234 /* OUT */ gras_socket_t *dst) {
235 return gras_socket_client_ext(host,port,32,0,dst);
239 void gras_socket_close(gras_socket_t sock) {
240 xbt_dynar_t sockets = gras_socketset_get();
241 gras_socket_t sock_iter;
244 /* FIXME: Issue an event when the socket is closed */
246 xbt_dynar_foreach(sockets,cursor,sock_iter) {
247 if (sock == sock_iter) {
248 xbt_dynar_cursor_rm(sockets,&cursor);
249 if ( sock->plugin->socket_close)
250 (* sock->plugin->socket_close)(sock);
252 /* free the memory */
254 xbt_free(sock->peer_name);
259 WARN0("Ignoring request to free an unknown socket");
264 * gras_trp_chunk_send:
266 * Send a bunch of bytes from on socket
269 gras_trp_chunk_send(gras_socket_t sd,
272 xbt_assert1(sd->outgoing,
273 "Socket not suited for data send (outgoing=%c)",
274 sd->outgoing?'y':'n');
275 xbt_assert1(sd->plugin->chunk_send,
276 "No function chunk_send on transport plugin %s",
278 return (*sd->plugin->chunk_send)(sd,data,size);
281 * gras_trp_chunk_recv:
283 * Receive a bunch of bytes from a socket
286 gras_trp_chunk_recv(gras_socket_t sd,
289 xbt_assert0(sd->incoming,
290 "Socket not suited for data receive");
291 xbt_assert1(sd->plugin->chunk_recv,
292 "No function chunk_recv on transport plugin %s",
294 return (sd->plugin->chunk_recv)(sd,data,size);
300 * Make sure all pending communications are done
303 gras_trp_flush(gras_socket_t sd) {
304 return (sd->plugin->flush)(sd);
308 gras_trp_plugin_get_by_name(const char *name,
309 gras_trp_plugin_t **dst){
311 return xbt_dict_get(_gras_trp_plugins,name,(void**)dst);
314 int gras_socket_my_port (gras_socket_t sock) {
317 int gras_socket_peer_port(gras_socket_t sock) {
318 return sock->peer_port;
320 char *gras_socket_peer_name(gras_socket_t sock) {
321 return sock->peer_name;
324 xbt_error_t gras_socket_raw_send(gras_socket_t peer,
325 unsigned int timeout,
326 unsigned long int exp_size,
327 unsigned long int msg_size) {
329 char *chunk = xbt_malloc(msg_size);
332 xbt_assert0(peer->raw,"Asked to send raw data on a regular socket");
333 for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) {
334 CDEBUG5(raw_trp,"Sent %d of %lu (msg_size=%ld) to %s:%d",
335 exp_sofar,exp_size,msg_size,
336 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
337 TRY(gras_trp_chunk_send(peer,chunk,msg_size));
339 CDEBUG5(raw_trp,"Sent %d of %lu (msg_size=%ld) to %s:%d",
340 exp_sofar,exp_size,msg_size,
341 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
344 return no_error;/* gras_socket_raw_exchange(peer,1,timeout,expSize,msgSize); */
347 xbt_error_t gras_socket_raw_recv(gras_socket_t peer,
348 unsigned int timeout,
349 unsigned long int exp_size,
350 unsigned long int msg_size){
353 char *chunk = xbt_malloc(msg_size);
356 xbt_assert0(peer->raw,"Asked to recveive raw data on a regular socket\n");
357 for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) {
358 CDEBUG5(raw_trp,"Recvd %d of %lu (msg_size=%ld) from %s:%d",
359 exp_sofar,exp_size,msg_size,
360 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
361 TRY(gras_trp_chunk_recv(peer,chunk,msg_size));
363 CDEBUG5(raw_trp,"Recvd %d of %lu (msg_size=%ld) from %s:%d",
364 exp_sofar,exp_size,msg_size,
365 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
368 return no_error;/* gras_socket_raw_exchange(peer,0,timeout,expSize,msgSize); */