X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/791f832cea6e18633bc614246193551293542bbd..187ba0c05f9fbe51175179b9f637b6554f947468:/src/gras/Transport/transport.c diff --git a/src/gras/Transport/transport.c b/src/gras/Transport/transport.c deleted file mode 100644 index fda7851e7c..0000000000 --- a/src/gras/Transport/transport.c +++ /dev/null @@ -1,518 +0,0 @@ -/* $Id$ */ - -/* transport - low level communication */ - -/* Copyright (c) 2004 Martin Quinson. 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 "portable.h" -#include "gras/Transport/transport_private.h" - -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(transport,gras,"Conveying bytes over the network"); -XBT_LOG_NEW_SUBCATEGORY(trp_meas,transport,"Conveying bytes over the network without formating for perf measurements"); -static short int _gras_trp_started = 0; - -static xbt_dict_t _gras_trp_plugins; /* All registered plugins */ -static void gras_trp_plugin_free(void *p); /* free one of the plugins */ - -static void -gras_trp_plugin_new(const char *name, gras_trp_setup_t setup) { - xbt_error_t errcode; - - gras_trp_plugin_t *plug = xbt_new0(gras_trp_plugin_t, 1); - - DEBUG1("Create plugin %s",name); - - plug->name=xbt_strdup(name); - - errcode = setup(plug); - switch (errcode) { - case mismatch_error: - /* SG plugin return mismatch when in RL mode (and vice versa) */ - free(plug->name); - free(plug); - break; - - case no_error: - xbt_dict_set(_gras_trp_plugins, - name, plug, gras_trp_plugin_free); - break; - - default: - DIE_IMPOSSIBLE; - } - -} - -void gras_trp_init(void){ - if (!_gras_trp_started) { - /* make room for all plugins */ - _gras_trp_plugins=xbt_dict_new(); - -#ifdef HAVE_WINSOCK2_H - /* initialize the windows mechanism */ - { - WORD wVersionRequested; - WSADATA wsaData; - - wVersionRequested = MAKEWORD( 2, 0 ); - xbt_assert0(WSAStartup( wVersionRequested, &wsaData ) == 0, - "Cannot find a usable WinSock DLL"); - - /* Confirm that the WinSock DLL supports 2.0.*/ - /* Note that if the DLL supports versions greater */ - /* than 2.0 in addition to 2.0, it will still return */ - /* 2.0 in wVersion since that is the version we */ - /* requested. */ - - xbt_assert0(LOBYTE( wsaData.wVersion ) == 2 && - HIBYTE( wsaData.wVersion ) == 0, - "Cannot find a usable WinSock DLL"); - INFO0("Found and initialized winsock2"); - } /* The WinSock DLL is acceptable. Proceed. */ -#elif HAVE_WINSOCK_H - { WSADATA wsaData; - xbt_assert0(WSAStartup( 0x0101, &wsaData ) == 0, - "Cannot find a usable WinSock DLL"); - INFO0("Found and initialized winsock"); - } -#endif - - /* Add plugins */ - gras_trp_plugin_new("tcp", gras_trp_tcp_setup); - gras_trp_plugin_new("file",gras_trp_file_setup); - gras_trp_plugin_new("sg",gras_trp_sg_setup); - - /* buf is composed, so it must come after the others */ - gras_trp_plugin_new("buf", gras_trp_buf_setup); - } - - _gras_trp_started++; -} - -void -gras_trp_exit(void){ - xbt_dynar_t sockets = gras_socketset_get(); - gras_socket_t sock_iter; - int cursor; - - if (_gras_trp_started == 0) { - return; - } - - if ( --_gras_trp_started == 0 ) { -#ifdef HAVE_WINSOCK_H - if ( WSACleanup() == SOCKET_ERROR ) { - if ( WSAGetLastError() == WSAEINPROGRESS ) { - WSACancelBlockingCall(); - WSACleanup(); - } - } -#endif - - /* Close all the sockets */ - xbt_dynar_foreach(sockets,cursor,sock_iter) { - VERB1("Closing the socket %p left open on exit. Maybe a socket leak?", - sock_iter); - gras_socket_close(sock_iter); - } - - /* Delete the plugins */ - xbt_dict_free(&_gras_trp_plugins); - } -} - - -void gras_trp_plugin_free(void *p) { - gras_trp_plugin_t *plug = p; - - if (plug) { - if (plug->exit) { - plug->exit(plug); - } else if (plug->data) { - DEBUG1("Plugin %s lacks exit(). Free data anyway.",plug->name); - free(plug->data); - } - - free(plug->name); - free(plug); - } -} - - -/** - * gras_trp_socket_new: - * - * Malloc a new socket, and initialize it with defaults - */ -void gras_trp_socket_new(int incoming, - gras_socket_t *dst) { - - gras_socket_t sock=xbt_new0(s_gras_socket_t,1); - - DEBUG1("Create a new socket (%p)", (void*)sock); - - sock->plugin = NULL; - sock->sd = -1; - sock->data = NULL; - - sock->incoming = incoming ? 1:0; - sock->outgoing = incoming ? 0:1; - sock->accepting = incoming ? 1:0; - - sock->port = -1; - sock->peer_port = -1; - sock->peer_name = NULL; - sock->meas = 0; - - *dst = sock; - - xbt_dynar_push(gras_socketset_get(),dst); - XBT_OUT; -} - - -/** - * gras_socket_server_ext: - * - * Opens a server socket and make it ready to be listened to. - * In real life, you'll get a TCP socket. - */ -xbt_error_t -gras_socket_server_ext(unsigned short port, - - unsigned long int bufSize, - int measurement, - - /* OUT */ gras_socket_t *dst) { - - xbt_error_t errcode; - gras_trp_plugin_t *trp; - gras_socket_t sock; - - *dst = NULL; - - DEBUG2("Create a server socket from plugin %s on port %d", - gras_if_RL() ? "tcp" : "sg", - port); - TRY(gras_trp_plugin_get_by_name((measurement? (gras_if_RL() ? "tcp" : "sg") - :"buf"), - &trp)); - - /* defaults settings */ - gras_trp_socket_new(1,&sock); - sock->plugin= trp; - sock->port=port; - sock->bufSize = bufSize; - sock->meas = measurement; - - /* Call plugin socket creation function */ - DEBUG1("Prepare socket with plugin (fct=%p)",trp->socket_server); - errcode = trp->socket_server(trp, sock); - DEBUG3("in=%c out=%c accept=%c", - sock->incoming?'y':'n', - sock->outgoing?'y':'n', - sock->accepting?'y':'n'); - - if (errcode != no_error) { - free(sock); - return errcode; - } - - *dst = sock; - - return no_error; -} - -/** - * gras_socket_client_ext: - * - * Opens a client socket to a remote host. - * In real life, you'll get a TCP socket. - */ -xbt_error_t -gras_socket_client_ext(const char *host, - unsigned short port, - - unsigned long int bufSize, - int measurement, - - /* OUT */ gras_socket_t *dst) { - - xbt_error_t errcode; - gras_trp_plugin_t *trp; - gras_socket_t sock; - - *dst = NULL; - - TRY(gras_trp_plugin_get_by_name((measurement? (gras_if_RL() ? "tcp" : "sg") - :"buf"), - &trp)); - - DEBUG1("Create a client socket from plugin %s",gras_if_RL() ? "tcp" : "sg"); - /* defaults settings */ - gras_trp_socket_new(0,&sock); - sock->plugin= trp; - sock->peer_port = port; - sock->peer_name = (char*)strdup(host?host:"localhost"); - sock->bufSize = bufSize; - sock->meas = measurement; - - /* plugin-specific */ - errcode= (*trp->socket_client)(trp, sock); - DEBUG3("in=%c out=%c accept=%c", - sock->incoming?'y':'n', - sock->outgoing?'y':'n', - sock->accepting?'y':'n'); - - if (errcode != no_error) { - free(sock); - return errcode; - } - - *dst = sock; - - return no_error; -} - -/** - * gras_socket_server: - * - * Opens a server socket and make it ready to be listened to. - * In real life, you'll get a TCP socket. - */ -xbt_error_t -gras_socket_server(unsigned short port, - /* OUT */ gras_socket_t *dst) { - return gras_socket_server_ext(port,32,0,dst); -} - -/** - * gras_socket_client: - * - * Opens a client socket to a remote host. - * In real life, you'll get a TCP socket. - */ -xbt_error_t -gras_socket_client(const char *host, - unsigned short port, - /* OUT */ gras_socket_t *dst) { - return gras_socket_client_ext(host,port,32,0,dst); -} - - -void gras_socket_close(gras_socket_t sock) { - xbt_dynar_t sockets = gras_socketset_get(); - gras_socket_t sock_iter; - int cursor; - - XBT_IN; - /* FIXME: Issue an event when the socket is closed */ - if (sock) { - xbt_dynar_foreach(sockets,cursor,sock_iter) { - if (sock == sock_iter) { - xbt_dynar_cursor_rm(sockets,&cursor); - if (sock->plugin->socket_close) - (* sock->plugin->socket_close)(sock); - - /* free the memory */ - if (sock->peer_name) - free(sock->peer_name); - free(sock); - XBT_OUT; - return; - } - } - WARN1("Ignoring request to free an unknown socket (%p)",sock); - } - XBT_OUT; -} - -/** - * gras_trp_chunk_send: - * - * Send a bunch of bytes from on socket - */ -xbt_error_t -gras_trp_chunk_send(gras_socket_t sd, - char *data, - long int size) { - xbt_assert1(sd->outgoing, - "Socket not suited for data send (outgoing=%c)", - sd->outgoing?'y':'n'); - xbt_assert1(sd->plugin->chunk_send, - "No function chunk_send on transport plugin %s", - sd->plugin->name); - return (*sd->plugin->chunk_send)(sd,data,size); -} -/** - * gras_trp_chunk_recv: - * - * Receive a bunch of bytes from a socket - */ -xbt_error_t -gras_trp_chunk_recv(gras_socket_t sd, - char *data, - long int size) { - xbt_assert0(sd->incoming, - "Socket not suited for data receive"); - xbt_assert1(sd->plugin->chunk_recv, - "No function chunk_recv on transport plugin %s", - sd->plugin->name); - return (sd->plugin->chunk_recv)(sd,data,size); -} - -/** - * gras_trp_flush: - * - * Make sure all pending communications are done - */ -xbt_error_t -gras_trp_flush(gras_socket_t sd) { - return (sd->plugin->flush)(sd); -} - -xbt_error_t -gras_trp_plugin_get_by_name(const char *name, - gras_trp_plugin_t **dst){ - - return xbt_dict_get(_gras_trp_plugins,name,(void**)dst); -} - -int gras_socket_my_port (gras_socket_t sock) { - return sock->port; -} -int gras_socket_peer_port(gras_socket_t sock) { - return sock->peer_port; -} -char *gras_socket_peer_name(gras_socket_t sock) { - return sock->peer_name; -} - -xbt_error_t gras_socket_meas_send(gras_socket_t peer, - unsigned int timeout, - unsigned long int exp_size, - unsigned long int msg_size) { - xbt_error_t errcode; - char *chunk = xbt_malloc0(msg_size); - unsigned long int exp_sofar; - - XBT_CIN(trp_meas); - - xbt_assert0(peer->meas,"Asked to send measurement data on a regular socket"); - - for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) { - CDEBUG5(trp_meas,"Sent %lu of %lu (msg_size=%ld) to %s:%d", - exp_sofar,exp_size,msg_size, - gras_socket_peer_name(peer), gras_socket_peer_port(peer)); - TRY(gras_trp_chunk_send(peer,chunk,msg_size)); - } - CDEBUG5(trp_meas,"Sent %lu of %lu (msg_size=%ld) to %s:%d", - exp_sofar,exp_size,msg_size, - gras_socket_peer_name(peer), gras_socket_peer_port(peer)); - - free(chunk); - - XBT_COUT(trp_meas); - return no_error; -} - -xbt_error_t gras_socket_meas_recv(gras_socket_t peer, - unsigned int timeout, - unsigned long int exp_size, - unsigned long int msg_size){ - - xbt_error_t errcode; - char *chunk = xbt_malloc(msg_size); - unsigned long int exp_sofar; - - XBT_CIN(trp_meas); - - xbt_assert0(peer->meas,"Asked to receive measurement data on a regular socket\n"); - - for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) { - CDEBUG5(trp_meas,"Recvd %ld of %lu (msg_size=%ld) from %s:%d", - exp_sofar,exp_size,msg_size, - gras_socket_peer_name(peer), gras_socket_peer_port(peer)); - TRY(gras_trp_chunk_recv(peer,chunk,msg_size)); - } - CDEBUG5(trp_meas,"Recvd %ld of %lu (msg_size=%ld) from %s:%d", - exp_sofar,exp_size,msg_size, - gras_socket_peer_name(peer), gras_socket_peer_port(peer)); - - free(chunk); - XBT_COUT(trp_meas); - - return no_error; -} - -/** - * \brief Something similar to the good old accept system call. - * - * Make sure that there is someone speaking to the provided server socket. - * In RL, it does an accept(2), close the master socket, and put the accepted - * socket in place of the provided one. In SG, it does not do anything for - * - * You should only call this on measurement sockets. It is automatically - * done for regular sockets, but you usually want more control about - * what's going on with measurement sockets. - * - * - */ -xbt_error_t gras_socket_meas_accept(gras_socket_t peer, gras_socket_t *accepted){ - xbt_error_t errcode; - gras_socket_t res; - - xbt_assert0(peer->meas, - "No need to accept on non-measurement sockets (it's automatic)"); - - if (!peer->accepting) { - /* nothing to accept here */ - *accepted=peer; - return no_error; - } - - TRY((peer->plugin->socket_accept)(peer,accepted)); - (*accepted)->meas = peer->meas; - CDEBUG1(trp_meas,"meas_accepted onto %d",(*accepted)->sd); - - return no_error; -} - - -/* - * Creating procdata for this module - */ -static void *gras_trp_procdata_new() { - gras_trp_procdata_t res = xbt_new(s_gras_trp_procdata_t,1); - - res->sockets = xbt_dynar_new(sizeof(gras_socket_t*), NULL); - - return (void*)res; -} - -/* - * Freeing procdata for this module - */ -static void gras_trp_procdata_free(void *data) { - gras_trp_procdata_t res = (gras_trp_procdata_t)data; - - xbt_dynar_free(&( res->sockets )); - free(res); -} - -/* - * Module registration - */ -void gras_trp_register() { - gras_procdata_add("gras_trp",gras_trp_procdata_new, gras_trp_procdata_free); -} - - -xbt_dynar_t -gras_socketset_get(void) { - /* FIXME: KILLME */ - return ((gras_trp_procdata_t) gras_libdata_get("gras_trp"))->sockets; -}