X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/afb6a920a5fb4da71b20d3653e67ff9c48f45dcb..c91b68ade95e42efb7a24f19fb5228bee0b618d0:/src/gras/Transport/transport_private.h diff --git a/src/gras/Transport/transport_private.h b/src/gras/Transport/transport_private.h index bef632eb3b..9f6786125f 100644 --- a/src/gras/Transport/transport_private.h +++ b/src/gras/Transport/transport_private.h @@ -1,115 +1,46 @@ -/* $Id$ */ +/* transport - low level communication (send/receive bunches of bytes) */ -/* trp (transport) - send/receive a bunch of bytes */ +/* module's private interface masked even to other parts of GRAS. */ -/* This file implements the public interface of this module, exported to the*/ -/* other modules of GRAS, but not to the end user. */ - -/* Authors: Martin Quinson */ -/* Copyright (C) 2004 Martin Quinson. */ +/* 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. */ + * under the terms of the license (GNU LGPL) which comes with this package. */ #ifndef GRAS_TRP_PRIVATE_H #define GRAS_TRP_PRIVATE_H -#include "gras_private.h" -/* A low-level socket type (each plugin implements it the way it prefers */ -//typedef void gras_trp_sock_t; - -/* A plugin type */ -struct gras_trp_plugin_ { - const char *name; - - gras_error_t (*init)(void); - void (*exit)(gras_trp_plugin_t *); - - gras_error_t (*socket_client_open)(const char *host, - unsigned short port, - int raw, - unsigned int bufSize, - /* OUT */ gras_trp_sock_t **dst); - gras_error_t (*socket_server_open)(unsigned short port, - int raw, - unsigned int bufSize, - /* OUT */ gras_trp_sock_t **dst); - void (*socket_close)(gras_trp_sock_t **sd); - - gras_error_t (*select)(double timeOut, - gras_trp_sock_t **sd); - - gras_error_t (*bloc_send)(gras_trp_sock_t *sd, - void *data, - size_t size, - double timeOut); - gras_error_t (*bloc_recv)(gras_trp_sock_t *sd, - void *data, - size_t size, - double timeOut); - gras_error_t (*flush)(gras_trp_sock_t *sd); - - void *specific; -}; +#include "xbt/sysdep.h" +#include "xbt/log.h" +#include "xbt/dynar.h" +#include "xbt/dict.h" -/********************************************************************** - * Internal stuff to the module. Other modules shouldn't fool with it * - **********************************************************************/ +#include "gras/emul.h" /* gras_if_RL() */ -/* TCP driver */ -gras_error_t gras_trp_tcp_init(void); -void gras_trp_tcp_exit(gras_trp_plugin_t *plugin); -gras_error_t gras_trp_tcp_socket_client(const char *host, - unsigned short port, - int raw, - unsigned int bufSize, - /* OUT */ gras_trp_sock_t **dst); -gras_error_t gras_trp_tcp_socket_server(unsigned short port, - int raw, - unsigned int bufSize, - /* OUT */ gras_trp_sock_t **dst); -void gras_trp_tcp_socket_close(gras_trp_sock_t **sd); -gras_error_t gras_trp_tcp_select(double timeOut, - gras_trp_sock_t **sd); - -gras_error_t gras_trp_tcp_bloc_send(gras_trp_sock_t *sd, - void *data, - size_t size, - double timeOut); +#include "gras_modinter.h" /* module init/exit */ +#include "gras/transport.h" /* rest of module interface */ -gras_error_t gras_trp_tcp_bloc_recv(gras_trp_sock_t *sd, - void *data, - size_t size, - double timeOut); -gras_error_t gras_trp_tcp_flush(gras_trp_sock_t *sd); - -/* SG driver */ -gras_error_t gras_trp_sg_init(void); -void gras_trp_sg_exit(gras_trp_plugin_t *plugin); -gras_error_t gras_trp_sg_socket_client(const char *host, - unsigned short port, - int raw, - unsigned int bufSize, - /* OUT */ gras_trp_sock_t **dst); -gras_error_t gras_trp_sg_socket_server(unsigned short port, - int raw, - unsigned int bufSize, - /* OUT */ gras_trp_sock_t **dst); -void gras_trp_sg_socket_close(gras_trp_sock_t **sd); -gras_error_t gras_trp_sg_select(double timeOut, - gras_trp_sock_t **sd); - -gras_error_t gras_trp_sg_bloc_send(gras_trp_sock_t *sd, - void *data, - size_t size, - double timeOut); - -gras_error_t gras_trp_sg_bloc_recv(gras_trp_sock_t *sd, - void *data, - size_t size, - double timeOut); -gras_error_t gras_trp_sg_flush(gras_trp_sock_t *sd); +#include "gras/Transport/transport_interface.h" /* semi-public API */ +#include "gras/Virtu/virtu_interface.h" /* libdata management */ +extern int gras_trp_libdata_id; /* our libdata identifier */ +/* The function that select returned the last time we asked. We need this + because the TCP read are greedy and try to get as much data in their + buffer as possible (to avoid subsequent syscalls). + (measurement sockets are not buffered and thus not concerned). + + So, we can get more than one message in one shoot. And when this happens, + we have to handle the same socket again afterward without select()ing at + all. + + Then, this data is not a static of the TCP driver because we want to + zero it when it gets closed by the user. If not, we use an already freed + pointer, which is bad. + + It gets tricky since gras_socket_close is part of the common API, not + only the RL one. */ +extern xbt_socket_t _gras_lastly_selected_socket; -#endif /* GRAS_TRP_PRIVATE_H */ +#endif /* GRAS_TRP_PRIVATE_H */