X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/73d53de1c9a9a2b536522d0d2e04031276941caf..acbc8f35e5a8520356ce5a527971e6685a4e5793:/src/gras/Transport/transport.c diff --git a/src/gras/Transport/transport.c b/src/gras/Transport/transport.c index 5970cdaeb9..cb7c2e26d5 100644 --- a/src/gras/Transport/transport.c +++ b/src/gras/Transport/transport.c @@ -2,68 +2,137 @@ /* transport - low level communication */ -/* Authors: Martin Quinson */ -/* Copyright (C) 2004 Martin Quinson. */ +/* 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. */ + * under the terms of the license (GNU LGPL) which comes with this package. */ -#include /* time() */ +#include "xbt/ex.h" +#include "xbt/host.h" +#include "portable.h" +#include "gras/Transport/transport_private.h" -#include "Transport/transport_private.h" +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp,gras,"Conveying bytes over the network"); +XBT_LOG_NEW_SUBCATEGORY(gras_trp_meas,gras_trp,"Conveying bytes over the network without formating for perf measurements"); +static short int _gras_trp_started = 0; - -GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(transport,GRAS); - -static gras_dict_t *_gras_trp_plugins; /* All registered plugins */ +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_ex_t e; -gras_dynar_t *_gras_trp_sockets; /* all existing sockets */ -static void gras_trp_socket_free(void *s); /* free one socket */ - -static fd_set FDread; - -gras_error_t -gras_trp_init(void){ - gras_error_t errcode; - gras_trp_plugin_t *plug; + gras_trp_plugin_t plug = xbt_new0(s_gras_trp_plugin_t, 1); - /* make room for all socket ownership descriptions */ - TRY(gras_dynar_new(&_gras_trp_sockets, sizeof(gras_socket_t*), NULL)); - - /* We do not ear for any socket for now */ - FD_ZERO(&FDread); - - /* make room for all plugins */ - TRY(gras_dict_new(&_gras_trp_plugins)); - - /* TCP */ - TRY(gras_trp_tcp_init(&plug)); - TRY(gras_dict_set(_gras_trp_plugins, - plug->name, plug, gras_trp_plugin_free)); + DEBUG1("Create plugin %s",name); + + plug->name=xbt_strdup(name); + + TRY { + setup(plug); + } CATCH(e) { + if (e.category == mismatch_error) { + /* SG plugin raise mismatch when in RL mode (and vice versa) */ + free(plug->name); + free(plug); + plug=NULL; + xbt_ex_free(e); + } else { + RETHROW; + } + } - /* FILE */ - TRY(gras_trp_file_init(&plug)); - TRY(gras_dict_set(_gras_trp_plugins, - plug->name, plug, gras_trp_plugin_free)); + if (plug) + xbt_dict_set(_gras_trp_plugins, name, plug, gras_trp_plugin_free); +} - return no_error; +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("file",gras_trp_file_setup); + gras_trp_plugin_new("sg",gras_trp_sg_setup); + gras_trp_plugin_new("tcp", gras_trp_tcp_setup); + } + + _gras_trp_started++; } void gras_trp_exit(void){ - gras_dict_free(&_gras_trp_plugins); - gras_dynar_free(_gras_trp_sockets); + xbt_dynar_t sockets = ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->sockets; + 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; + gras_trp_plugin_t plug = p; if (plug) { - if (plug->free_specific && plug->specific) - plug->free_specific(plug->specific); + 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); @@ -76,194 +145,432 @@ void gras_trp_plugin_free(void *p) { * * Malloc a new socket, and initialize it with defaults */ -gras_error_t gras_trp_socket_new(int incoming, - gras_socket_t **dst) { +void gras_trp_socket_new(int incoming, + gras_socket_t *dst) { - gras_socket_t *sock; + gras_socket_t sock=xbt_new0(s_gras_socket_t,1); - if (! (sock=malloc(sizeof(gras_socket_t))) ) - RAISE_MALLOC; + DEBUG1("Create a new socket (%p)", (void*)sock); sock->plugin = NULL; - sock->sd = -1; - sock->incoming = incoming? 1:0; - sock->outgoing = incoming? 0:1; - sock->accepting = incoming? 1:0; - DEBUG3("in=%c out=%c accept=%c", - sock->incoming?'y':'n', - sock->outgoing?'y':'n', - sock->accepting?'y':'n'); + sock->incoming = incoming ? 1:0; + sock->outgoing = incoming ? 0:1; + sock->accepting = incoming ? 1:0; + sock->meas = 0; + sock->recv_ok = 1; + sock->sd = -1; sock->port = -1; sock->peer_port = -1; sock->peer_name = NULL; + sock->peer_proc = NULL; + sock->data = NULL; + sock->bufdata = NULL; + *dst = sock; - return no_error; -} - + xbt_dynar_push(((gras_trp_procdata_t) + gras_libdata_by_id(gras_trp_libdata_id))->sockets,dst); + XBT_OUT; +} + /** - * gras_socket_server: - * - * Opens a server socket and make it ready to be listened to. - * In real life, you'll get a TCP socket. + * @brief Opens a server socket and makes it ready to be listened to. + * @param port: port on which you want to listen + * @param buf_size: size of the buffer (in byte) on the socket (for TCP sockets only). If 0, a sain default is used (32k, but may change) + * @param measurement: whether this socket is meant to convey measurement (if you don't know, use 0 to exchange regular messages) + * + * In real life, you'll get a TCP socket. */ -gras_error_t -gras_socket_server(unsigned short port, - /* OUT */ gras_socket_t **dst) { +gras_socket_t +gras_socket_server_ext(unsigned short port, + + unsigned long int buf_size, + int measurement) { - gras_error_t errcode; - gras_trp_plugin_t *trp; - gras_socket_t *sock; - - *dst = NULL; + xbt_ex_t e; + gras_trp_plugin_t trp; + gras_socket_t sock; - TRY(gras_trp_plugin_get_by_name(gras_if_RL() ? "TCP" : "SG", - &trp)); + DEBUG2("Create a server socket from plugin %s on port %d", + gras_if_RL() ? "tcp" : "sg", + port); + trp = gras_trp_plugin_get_by_name(gras_if_SG() ? "sg":"tcp"); /* defaults settings */ - TRY(gras_trp_socket_new(1,&sock)); + gras_trp_socket_new(1,&sock); sock->plugin= trp; sock->port=port; + sock->buf_size = buf_size>0 ? buf_size : 32*1024; + sock->meas = measurement; /* Call plugin socket creation function */ - errcode = trp->socket_server(trp, port, sock); - if (errcode != no_error) { + DEBUG1("Prepare socket with plugin (fct=%p)",trp->socket_server); + TRY { + trp->socket_server(trp, sock); + DEBUG3("in=%c out=%c accept=%c", + sock->incoming?'y':'n', + sock->outgoing?'y':'n', + sock->accepting?'y':'n'); + } CATCH(e) { + int cursor; + gras_socket_t sock_iter; + xbt_dynar_t socks = ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->sockets; + xbt_dynar_foreach(socks, cursor, sock_iter) { + if (sock_iter==sock) + xbt_dynar_cursor_rm(socks,&cursor); + } free(sock); - return errcode; + RETHROW; } - *dst = sock; - /* Register this socket */ - errcode = gras_dynar_push(_gras_trp_sockets,dst); - if (errcode != no_error) { - free(sock); - *dst = NULL; - return errcode; - } - - return no_error; + if (!measurement) + ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport = port; + return sock; } - /** - * gras_socket_client: - * - * Opens a client socket to a remote host. - * In real life, you'll get a TCP socket. + * @brief Opens a server socket on any port in the given range + * + * @param minport: first port we will try + * @param maxport: last port we will try + * @param buf_size: size of the buffer (in byte) on the socket (for TCP sockets only). If 0, a sain default is used (32k, but may change) + * @param measurement: whether this socket is meant to convey measurement (if you don't know, use 0 to exchange regular messages) + * + * If none of the provided ports works, raises the exception got when trying the last possibility + */ +gras_socket_t +gras_socket_server_range(unsigned short minport, unsigned short maxport, + unsigned long int buf_size, int measurement) { + + int port; + gras_socket_t res=NULL; + xbt_ex_t e; + + for (port=minport; portplugin= trp; sock->peer_port = port; - sock->peer_name = strdup(host?host:"localhost"); + sock->peer_name = (char*)strdup(host?host:"localhost"); + sock->buf_size = buf_size>0 ? buf_size: 32*1024; + sock->meas = measurement; /* plugin-specific */ - errcode= (* trp->socket_client)(trp, - host ? host : "localhost", port, - sock); - if (errcode != no_error) { + TRY { + (*trp->socket_client)(trp, sock); + DEBUG3("in=%c out=%c accept=%c", + sock->incoming?'y':'n', + sock->outgoing?'y':'n', + sock->accepting?'y':'n'); + } CATCH(e) { free(sock); - return errcode; + RETHROW; } - /* register socket */ - *dst = sock; - errcode = gras_dynar_push(_gras_trp_sockets,dst); - if (errcode != no_error) { - free(sock); - *dst = NULL; - return errcode; - } + return sock; +} + +/** + * gras_socket_server: + * + * Opens a server socket and make it ready to be listened to. + * In real life, you'll get a TCP socket. + */ +gras_socket_t +gras_socket_server(unsigned short port) { + return gras_socket_server_ext(port,32*1024,0); +} + +/** @brief Opens a client socket to a remote host */ +gras_socket_t +gras_socket_client(const char *host, + unsigned short port) { + return gras_socket_client_ext(host,port,0,0); +} - return no_error; +/** @brief Opens a client socket to a remote host specified as ':' */ +gras_socket_t +gras_socket_client_from_string(const char *host) { + xbt_host_t h = xbt_host_from_string(host); + gras_socket_t res = gras_socket_client_ext(h->name,h->port,0,0); + xbt_host_free(h); + return res; } -void gras_socket_close(gras_socket_t **sock) { - gras_socket_t *sock_iter; +/** \brief Close socket */ +void gras_socket_close(gras_socket_t sock) { + xbt_dynar_t sockets = ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->sockets; + gras_socket_t sock_iter; int cursor; + XBT_IN; /* FIXME: Issue an event when the socket is closed */ - if (sock && *sock) { - gras_dynar_foreach(_gras_trp_sockets,cursor,sock_iter) { - if (*sock == sock_iter) { - gras_dynar_cursor_rm(_gras_trp_sockets,&cursor); - if ( (*sock)->plugin->socket_close) - (* (*sock)->plugin->socket_close)(*sock); + 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 */ - free(*sock); - *sock=NULL; + if (sock->peer_name) + free(sock->peer_name); + free(sock); + XBT_OUT; return; } } - WARN0("Ignoring request to free an unknown socket"); + WARN1("Ignoring request to free an unknown socket (%p). Execution stack:",sock); + xbt_backtrace_display(); } + XBT_OUT; } /** - * gras_trp_chunk_send: + * gras_trp_send: * * Send a bunch of bytes from on socket + * (stable if we know the storage will keep as is until the next trp_flush) */ -gras_error_t -gras_trp_chunk_send(gras_socket_t *sd, - char *data, - size_t size) { - gras_assert1(sd->outgoing, - "Socket not suited for data send (outgoing=%c)", - sd->outgoing?'y':'n'); - gras_assert1(sd->plugin->chunk_send, - "No function chunk_send on transport plugin %s", - sd->plugin->name); - return (*sd->plugin->chunk_send)(sd,data,size); +void +gras_trp_send(gras_socket_t sd, char *data, long int size, int stable) { + xbt_assert0(sd->outgoing,"Socket not suited for data send"); + (*sd->plugin->send)(sd,data,size,stable); } /** * gras_trp_chunk_recv: * * Receive a bunch of bytes from a socket */ -gras_error_t -gras_trp_chunk_recv(gras_socket_t *sd, - char *data, - size_t size) { - gras_assert0(sd->incoming, - "Socket not suited for data receive"); - gras_assert1(sd->plugin->chunk_recv, - "No function chunk_recv on transport plugin %s", - sd->plugin->name); - return (sd->plugin->chunk_recv)(sd,data,size); +void +gras_trp_recv(gras_socket_t sd, char *data, long int size) { + xbt_assert0(sd->incoming,"Socket not suited for data receive"); + (sd->plugin->recv)(sd,data,size); } +/** + * gras_trp_flush: + * + * Make sure all pending communications are done + */ +void +gras_trp_flush(gras_socket_t sd) { + if (sd->plugin->flush) + (sd->plugin->flush)(sd); +} -gras_error_t -gras_trp_plugin_get_by_name(const char *name, - gras_trp_plugin_t **dst){ - - return gras_dict_get(_gras_trp_plugins,name,(void**)dst); +gras_trp_plugin_t +gras_trp_plugin_get_by_name(const char *name){ + return xbt_dict_get(_gras_trp_plugins,name); } -int gras_socket_my_port (gras_socket_t *sock) { +int gras_socket_my_port (gras_socket_t sock) { return sock->port; } -int gras_socket_peer_port(gras_socket_t *sock) { +int gras_socket_peer_port(gras_socket_t sock) { return sock->peer_port; } -char *gras_socket_peer_name(gras_socket_t *sock) { +char *gras_socket_peer_name(gras_socket_t sock) { return sock->peer_name; } +char *gras_socket_peer_proc(gras_socket_t sock) { + return sock->peer_proc; +} + +void gras_socket_peer_proc_set(gras_socket_t sock,char*peer_proc) { + sock->peer_proc = peer_proc; +} + +/** \brief Check if the provided socket is a measurement one (or a regular one) */ +int gras_socket_is_meas(gras_socket_t sock) { + return sock->meas; +} + +/** \brief Send a chunk of (random) data over a measurement socket + * + * @param peer measurement socket to use for the experiment + * @param timeout timeout (in seconds) + * @param exp_size total amount of data to send (in bytes). + * @param msg_size size of each chunk sent over the socket (in bytes). + * + * Calls to gras_socket_meas_send() and gras_socket_meas_recv() on + * each side of the socket should be paired. + * + * The exchanged data is zeroed to make sure it's initialized, but + * there is no way to control what is sent (ie, you cannot use these + * functions to exchange data out of band). + */ +void gras_socket_meas_send(gras_socket_t peer, + unsigned int timeout, + unsigned long int exp_size, + unsigned long int msg_size) { + char *chunk=NULL; + unsigned long int exp_sofar; + + XBT_IN; + + if (gras_if_RL()) + chunk=xbt_malloc0(msg_size); + + xbt_assert0(peer->meas,"Asked to send measurement data on a regular socket"); + xbt_assert0(peer->outgoing,"Socket not suited for data send (was created with gras_socket_server(), not gras_socket_client())"); + + for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) { + CDEBUG5(gras_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)); + (*peer->plugin->raw_send)(peer,chunk,msg_size); + } + CDEBUG5(gras_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)); + + if (gras_if_RL()) + free(chunk); + + XBT_OUT; +} + +/** \brief Receive a chunk of data over a measurement socket + * + * Calls to gras_socket_meas_send() and gras_socket_meas_recv() on + * each side of the socket should be paired. + */ +void gras_socket_meas_recv(gras_socket_t peer, + unsigned int timeout, + unsigned long int exp_size, + unsigned long int msg_size){ + + char *chunk=NULL; + unsigned long int exp_sofar; + + XBT_IN; + + if (gras_if_RL()) + chunk = xbt_malloc(msg_size); + + xbt_assert0(peer->meas, + "Asked to receive measurement data on a regular socket"); + xbt_assert0(peer->incoming,"Socket not suited for data receive"); + + for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) { + CDEBUG5(gras_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)); + (peer->plugin->raw_recv)(peer,chunk,msg_size); + } + CDEBUG5(gras_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)); + + if (gras_if_RL()) + free(chunk); + XBT_OUT; +} + +/** + * \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) and return the result as last argument. + * In SG, as accepts are useless, it returns the provided argument as result. + * You should thus test whether (peer != accepted) before closing both of them. + * + * 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. + */ +gras_socket_t gras_socket_meas_accept(gras_socket_t peer){ + 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 (must be in SG) */ + /* BUG: FIXME: this is BAD! it makes tricky to free the accepted socket*/ + return peer; + } + + res = (peer->plugin->socket_accept)(peer); + res->meas = peer->meas; + CDEBUG1(gras_trp_meas,"meas_accepted onto %d",res->sd); + + return res; +} + + +/* + * 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->name = xbt_strdup("gras_trp"); + res->name_len = 0; + res->sockets = xbt_dynar_new(sizeof(gras_socket_t*), NULL); + res->myport = 0; + + 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->name); + free(res); +} + +/* + * Module registration + */ +int gras_trp_libdata_id; +void gras_trp_register() { + gras_trp_libdata_id = gras_procdata_add("gras_trp",gras_trp_procdata_new, gras_trp_procdata_free); +} + +int gras_os_myport(void) { + return ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport; +} +