+++ /dev/null
-/* $Id$ */
-
-/* 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;
-}
