3 /* transport - low level communication */
5 /* Authors: Martin Quinson */
6 /* Copyright (C) 2004 Martin Quinson. */
8 /* This program is free software; you can redistribute it and/or modify it
9 under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "gras/Transport/transport_private.h"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(transport,gras,"Conveying bytes over the network");
14 XBT_LOG_NEW_SUBCATEGORY(raw_trp,transport,"Conveying bytes over the network without formating");
16 static xbt_dict_t _gras_trp_plugins; /* All registered plugins */
17 static void gras_trp_plugin_free(void *p); /* free one of the plugins */
20 gras_trp_plugin_new(const char *name, gras_trp_setup_t setup) {
23 gras_trp_plugin_t *plug = xbt_new0(gras_trp_plugin_t, 1);
25 DEBUG1("Create plugin %s",name);
27 plug->name=xbt_strdup(name);
29 errcode = setup(plug);
32 /* SG plugin return mismatch when in RL mode (and vice versa) */
38 xbt_dict_set(_gras_trp_plugins,
39 name, plug, gras_trp_plugin_free);
48 void gras_trp_init(void){
49 /* make room for all plugins */
50 _gras_trp_plugins=xbt_dict_new();
53 gras_trp_plugin_new("tcp", gras_trp_tcp_setup);
54 gras_trp_plugin_new("file",gras_trp_file_setup);
55 gras_trp_plugin_new("sg",gras_trp_sg_setup);
57 /* buf is composed, so it must come after the others */
58 gras_trp_plugin_new("buf", gras_trp_buf_setup);
64 xbt_dict_free(&_gras_trp_plugins);
68 void gras_trp_plugin_free(void *p) {
69 gras_trp_plugin_t *plug = p;
74 } else if (plug->data) {
75 DEBUG1("Plugin %s lacks exit(). Free data anyway.",plug->name);
86 * gras_trp_socket_new:
88 * Malloc a new socket, and initialize it with defaults
90 void gras_trp_socket_new(int incoming,
93 gras_socket_t sock=xbt_new0(s_gras_socket_t,1);
95 DEBUG1("Create a new socket (%p)", (void*)sock);
101 sock->incoming = incoming ? 1:0;
102 sock->outgoing = incoming ? 0:1;
103 sock->accepting = incoming ? 1:0;
106 sock->peer_port = -1;
107 sock->peer_name = NULL;
112 xbt_dynar_push(gras_socketset_get(),dst);
117 * gras_socket_server_ext:
119 * Opens a server socket and make it ready to be listened to.
120 * In real life, you'll get a TCP socket.
123 gras_socket_server_ext(unsigned short port,
125 unsigned long int bufSize,
128 /* OUT */ gras_socket_t *dst) {
131 gras_trp_plugin_t *trp;
136 DEBUG2("Create a server socket from plugin %s on port %d",
137 gras_if_RL() ? "tcp" : "sg",
139 TRY(gras_trp_plugin_get_by_name("buf",&trp));
141 /* defaults settings */
142 gras_trp_socket_new(1,&sock);
145 sock->bufSize = bufSize;
148 /* Call plugin socket creation function */
149 errcode = trp->socket_server(trp, sock);
150 DEBUG3("in=%c out=%c accept=%c",
151 sock->incoming?'y':'n',
152 sock->outgoing?'y':'n',
153 sock->accepting?'y':'n');
155 if (errcode != no_error) {
166 * gras_socket_client_ext:
168 * Opens a client socket to a remote host.
169 * In real life, you'll get a TCP socket.
172 gras_socket_client_ext(const char *host,
175 unsigned long int bufSize,
178 /* OUT */ gras_socket_t *dst) {
181 gras_trp_plugin_t *trp;
186 TRY(gras_trp_plugin_get_by_name("buf",&trp));
188 DEBUG1("Create a client socket from plugin %s",gras_if_RL() ? "tcp" : "sg");
189 /* defaults settings */
190 gras_trp_socket_new(0,&sock);
192 sock->peer_port = port;
193 sock->peer_name = (char*)strdup(host?host:"localhost");
194 sock->bufSize = bufSize;
197 /* plugin-specific */
198 errcode= (*trp->socket_client)(trp, sock);
199 DEBUG3("in=%c out=%c accept=%c",
200 sock->incoming?'y':'n',
201 sock->outgoing?'y':'n',
202 sock->accepting?'y':'n');
204 if (errcode != no_error) {
215 * gras_socket_server:
217 * Opens a server socket and make it ready to be listened to.
218 * In real life, you'll get a TCP socket.
221 gras_socket_server(unsigned short port,
222 /* OUT */ gras_socket_t *dst) {
223 return gras_socket_server_ext(port,32,0,dst);
227 * gras_socket_client:
229 * Opens a client socket to a remote host.
230 * In real life, you'll get a TCP socket.
233 gras_socket_client(const char *host,
235 /* OUT */ gras_socket_t *dst) {
236 return gras_socket_client_ext(host,port,32,0,dst);
240 void gras_socket_close(gras_socket_t sock) {
241 xbt_dynar_t sockets = gras_socketset_get();
242 gras_socket_t sock_iter;
245 /* FIXME: Issue an event when the socket is closed */
247 xbt_dynar_foreach(sockets,cursor,sock_iter) {
248 if (sock == sock_iter) {
249 xbt_dynar_cursor_rm(sockets,&cursor);
250 if ( sock->plugin->socket_close)
251 (* sock->plugin->socket_close)(sock);
253 /* free the memory */
255 xbt_free(sock->peer_name);
260 WARN0("Ignoring request to free an unknown socket");
265 * gras_trp_chunk_send:
267 * Send a bunch of bytes from on socket
270 gras_trp_chunk_send(gras_socket_t sd,
273 xbt_assert1(sd->outgoing,
274 "Socket not suited for data send (outgoing=%c)",
275 sd->outgoing?'y':'n');
276 xbt_assert1(sd->plugin->chunk_send,
277 "No function chunk_send on transport plugin %s",
279 return (*sd->plugin->chunk_send)(sd,data,size);
282 * gras_trp_chunk_recv:
284 * Receive a bunch of bytes from a socket
287 gras_trp_chunk_recv(gras_socket_t sd,
290 xbt_assert0(sd->incoming,
291 "Socket not suited for data receive");
292 xbt_assert1(sd->plugin->chunk_recv,
293 "No function chunk_recv on transport plugin %s",
295 return (sd->plugin->chunk_recv)(sd,data,size);
301 * Make sure all pending communications are done
304 gras_trp_flush(gras_socket_t sd) {
305 return (sd->plugin->flush)(sd);
309 gras_trp_plugin_get_by_name(const char *name,
310 gras_trp_plugin_t **dst){
312 return xbt_dict_get(_gras_trp_plugins,name,(void**)dst);
315 int gras_socket_my_port (gras_socket_t sock) {
318 int gras_socket_peer_port(gras_socket_t sock) {
319 return sock->peer_port;
321 char *gras_socket_peer_name(gras_socket_t sock) {
322 return sock->peer_name;
325 xbt_error_t gras_socket_raw_send(gras_socket_t peer,
326 unsigned int timeout,
327 unsigned long int exp_size,
328 unsigned long int msg_size) {
330 char *chunk = xbt_malloc(msg_size);
333 xbt_assert0(peer->raw,"Asked to send raw data on a regular socket");
334 for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) {
335 CDEBUG5(raw_trp,"Sent %d of %lu (msg_size=%ld) to %s:%d",
336 exp_sofar,exp_size,msg_size,
337 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
338 TRY(gras_trp_chunk_send(peer,chunk,msg_size));
340 CDEBUG5(raw_trp,"Sent %d of %lu (msg_size=%ld) to %s:%d",
341 exp_sofar,exp_size,msg_size,
342 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
345 return no_error;/* gras_socket_raw_exchange(peer,1,timeout,expSize,msgSize); */
348 xbt_error_t gras_socket_raw_recv(gras_socket_t peer,
349 unsigned int timeout,
350 unsigned long int exp_size,
351 unsigned long int msg_size){
354 char *chunk = xbt_malloc(msg_size);
357 xbt_assert0(peer->raw,"Asked to recveive raw data on a regular socket\n");
358 for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) {
359 CDEBUG5(raw_trp,"Recvd %d of %lu (msg_size=%ld) from %s:%d",
360 exp_sofar,exp_size,msg_size,
361 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
362 TRY(gras_trp_chunk_recv(peer,chunk,msg_size));
364 CDEBUG5(raw_trp,"Recvd %d of %lu (msg_size=%ld) from %s:%d",
365 exp_sofar,exp_size,msg_size,
366 gras_socket_peer_name(peer), gras_socket_peer_port(peer));
369 return no_error;/* gras_socket_raw_exchange(peer,0,timeout,expSize,msgSize); */