X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/24738931e11d38749f48fb869338c5c6fcd9a8f5..f9dd9e3d692f6c43f78500a9fc66fe8663dedbbf:/src/gras/Transport/sg_transport.c diff --git a/src/gras/Transport/sg_transport.c b/src/gras/Transport/sg_transport.c index 53019f5605..8e52a7569a 100644 --- a/src/gras/Transport/sg_transport.c +++ b/src/gras/Transport/sg_transport.c @@ -1,20 +1,23 @@ -/* $Id$ */ - /* sg_transport - SG specific functions for transport */ -/* Copyright (c) 2004 Martin Quinson. All rights reserved. */ +/* Copyright (c) 2004, 2005, 2006, 2007, 2009, 2010. The SimGrid Team. + * 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 "xbt/ex.h" #include "gras/Transport/transport_private.h" -#include "msg/msg.h" #include "gras/Virtu/virtu_sg.h" -XBT_LOG_EXTERNAL_CATEGORY(transport); -XBT_LOG_DEFAULT_CATEGORY(transport); +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(gras_trp); + +/* check transport_private.h for an explanation of this variable; + * this just need to be defined to NULL in SG */ +xbt_socket_t _gras_lastly_selected_socket = NULL; -/** +#ifdef KILLME +/** * gras_trp_select: * * Returns the next socket to service having a message awaiting. @@ -25,136 +28,101 @@ XBT_LOG_DEFAULT_CATEGORY(transport); * * if timeout>0 and no message there, wait at most that amount of time before giving up. */ -xbt_error_t -gras_trp_select(double timeout, - gras_socket_t *dst) { - - xbt_error_t errcode; - double startTime=gras_os_time(); - gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp"); +gras_socket_t gras_trp_select(double timeout) +{ + gras_socket_t res; + gras_trp_procdata_t pd = + (gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id); gras_trp_sg_sock_data_t *sockdata; - gras_trp_plugin_t *trp; - - gras_socket_t sock_iter; /* iterating over all sockets */ - int cursor,cpt; - - gras_sg_portrec_t pr; /* iterating to find the chanel of expeditor */ - - int r_pid; - gras_hostdata_t *remote_hd; - - DEBUG3("select on %s@%s with timeout=%f", - MSG_process_get_name(MSG_process_self()), - MSG_host_get_name(MSG_host_self()), - timeout); - do { - r_pid = MSG_task_probe_from((m_channel_t) pd->chan); - if (r_pid >= 0) { - /* Try to reuse an already openned socket to that expeditor */ - xbt_dynar_foreach(pd->sockets,cursor,sock_iter) { - DEBUG1("Consider %p as outgoing socket to expeditor",sock_iter); - sockdata = sock_iter->data; - - if (sock_iter->meas || !sock_iter->outgoing) - continue; - - if (sockdata->to_PID == r_pid) { - *dst=sock_iter; - return no_error; - } - } - - /* Socket to expeditor not created yet */ - DEBUG0("Create a socket to the expeditor"); - - TRY(gras_trp_plugin_get_by_name("buf",&trp)); - - gras_trp_socket_new(1,dst); - (*dst)->plugin = trp; - - (*dst)->incoming = 1; - (*dst)->outgoing = 1; - (*dst)->accepting = 0; - (*dst)->sd = -1; - - (*dst)->port = -1; - - sockdata = xbt_new(gras_trp_sg_sock_data_t,1); - sockdata->from_PID = MSG_process_self_PID(); - sockdata->to_PID = r_pid; - sockdata->to_host = MSG_process_get_host(MSG_process_from_PID(r_pid)); - (*dst)->data = sockdata; - gras_trp_buf_init_sock(*dst); - - (*dst)->peer_name = strdup(MSG_host_get_name(sockdata->to_host)); - - remote_hd=(gras_hostdata_t *)MSG_host_get_data(sockdata->to_host); - xbt_assert0(remote_hd,"Run gras_process_init!!"); - - sockdata->to_chan = -1; - (*dst)->peer_port = -10; - for (cursor=0; cursorproc[cursor] == r_pid) { - sockdata->to_chan = cursor; - DEBUG2("Chan %d on %s is for my pal", - cursor,(*dst)->peer_name); - - xbt_dynar_foreach(remote_hd->ports, cpt, pr) { - if (sockdata->to_chan == pr.tochan) { - if (pr.meas) { - DEBUG0("Damn, it's for measurement"); - continue; - } - - (*dst)->peer_port = pr.port; - DEBUG1("Cool, it points to port %d", pr.port); - break; - } else { - DEBUG2("Wrong port (tochan=%d, looking for %d)\n", - pr.tochan,sockdata->to_chan); - } - } - if ((*dst)->peer_port == -10) { - /* was for measurement */ - sockdata->to_chan = -1; - } else { - /* found it, don't let it override by meas */ - break; - } - } - } - xbt_assert0(sockdata->to_chan != -1, - "Got a message from a process without channel"); - - return no_error; - } else { - - DEBUG5("Select on %s@%s did not find anything yet at %f (waited %f of %f sec)", - MSG_process_get_name(MSG_process_self()), - MSG_host_get_name(MSG_host_self()), - gras_os_time(), - gras_os_time()-startTime , timeout); - - /* MSG_process_sleep(1); */ - MSG_process_sleep(0.001); + gras_trp_plugin_t trp; + gras_socket_t active_socket = NULL; + gras_trp_sg_sock_data_t *active_socket_data; + gras_socket_t sock_iter; /* iterating over all sockets */ + unsigned int cursor; + + XBT_DEBUG("select on %s@%s with timeout=%f", + SIMIX_process_self_get_name(), + SIMIX_host_self_get_name(), timeout); + if (timeout >= 0) { + xbt_queue_shift_timed(pd->msg_selectable_sockets, + &active_socket, timeout); + } else { + xbt_queue_shift(pd->msg_selectable_sockets, &active_socket); + } + + if (active_socket == NULL) { + XBT_DEBUG("TIMEOUT"); + THROWF(timeout_error, 0, "Timeout"); + } + active_socket_data = (gras_trp_sg_sock_data_t *) active_socket->data; + + /* Ok, got something. Open a socket back to the expeditor */ + + /* Try to reuse an already openned socket to that expeditor */ + XBT_DEBUG("Open sockets size %lu", xbt_dynar_length(pd->sockets)); + xbt_dynar_foreach(pd->sockets, cursor, sock_iter) { + gras_trp_sg_sock_data_t *sock_data; + XBT_DEBUG("Consider %p as outgoing socket to expeditor", sock_iter); + + if (sock_iter->meas || !sock_iter->outgoing) + continue; + sock_data = ((gras_trp_sg_sock_data_t *) sock_iter->data); + + if ((sock_data->to_socket == active_socket) && + (sock_data->to_host == + simcall_process_get_host(active_socket_data->from_process))) { + xbt_dynar_cursor_unlock(pd->sockets); + return sock_iter; } - } while (gras_os_time()-startTime < timeout - || MSG_task_Iprobe((m_channel_t) pd->chan)); + } - DEBUG0("TIMEOUT"); - return timeout_error; + /* Socket to expeditor not created yet */ + XBT_DEBUG("Create a socket to the expeditor"); -} + trp = gras_trp_plugin_get_by_name("sg"); - -/* dummy implementations of the functions used in RL mode */ + gras_trp_socket_new(1, &res); + res->plugin = trp; -xbt_error_t gras_trp_tcp_setup(gras_trp_plugin_t *plug) { - return mismatch_error; -} -xbt_error_t gras_trp_file_setup(gras_trp_plugin_t *plug) { - return mismatch_error; -} + res->incoming = 1; + res->outgoing = 1; + res->accepting = 0; + res->sd = -1; + + res->port = -1; + /* initialize the ports */ + //res->peer_port = active_socket->port; + res->port = active_socket->peer_port; - + /* create sockdata */ + sockdata = xbt_new(gras_trp_sg_sock_data_t, 1); + sockdata->from_process = SIMIX_process_self(); + sockdata->to_process = active_socket_data->from_process; + + res->peer_port = ((gras_trp_procdata_t) + gras_libdata_by_name_from_remote("gras_trp", + sockdata->to_process))-> + myport; + sockdata->to_socket = active_socket; + /*update the peer to_socket variable */ + active_socket_data->to_socket = res; + sockdata->cond = simcall_cond_init(); + sockdata->mutex = simcall_mutex_init(); + + sockdata->to_host = + simcall_process_get_host(active_socket_data->from_process); + + res->data = sockdata; + res->peer_name = strdup(simcall_host_get_name(sockdata->to_host)); + + gras_trp_buf_init_sock(res); + + XBT_DEBUG("Create socket to process:%s(Port %d) from process: %s(Port %d)", + simcall_process_get_name(sockdata->from_process), + res->peer_port, + simcall_process_get_name(sockdata->to_process), res->port); + + return res; +} +#endif