X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e9f059a161cec95eead6f90b6da546e418ead211..f9dd9e3d692f6c43f78500a9fc66fe8663dedbbf:/src/gras/Transport/transport_private.h diff --git a/src/gras/Transport/transport_private.h b/src/gras/Transport/transport_private.h index becb2627aa..9f6786125f 100644 --- a/src/gras/Transport/transport_private.h +++ b/src/gras/Transport/transport_private.h @@ -1,10 +1,9 @@ -/* $Id$ */ - /* transport - low level communication (send/receive bunches of bytes) */ /* module's private interface masked even to other parts of GRAS. */ -/* 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. */ @@ -17,93 +16,31 @@ #include "xbt/dynar.h" #include "xbt/dict.h" -#include "gras/emul.h" /* gras_if_RL() */ +#include "gras/emul.h" /* gras_if_RL() */ -#include "gras_modinter.h" /* module init/exit */ -#include "gras/transport.h" /* rest of module interface */ +#include "gras_modinter.h" /* module init/exit */ +#include "gras/transport.h" /* rest of module interface */ #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). +/* 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. + 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. + 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 gras_socket_t _gras_lastly_selected_socket; - -/** - * s_gras_socket: - * - * Description of a socket. - */ -typedef struct gras_trp_bufdata_ gras_trp_bufdata_t; - -typedef struct s_gras_socket { - gras_trp_plugin_t plugin; - - int incoming :1; /* true if we can read from this sock */ - int outgoing :1; /* true if we can write on this sock */ - int accepting :1; /* true if master incoming sock in tcp */ - int meas :1; /* true if this is an experiment socket instead of messaging */ - int recv_ok :1; /* true if it is valid to recv() on the socket (false if it is a file) */ - int valid :1; /* false if a select returned that the peer quitted, forcing us to "close" the socket */ - int moredata :1; /* TCP socket use a buffer and read operation get as much data as possible. - It is possible that several messages are received in one shoot, and select won't catch them afterward again. - This boolean indicates that this is the case, so that we don't call select in that case. - Note that measurement sockets are not concerned since they use the TCP interface directly, with no buffer. */ - - unsigned long int buf_size; /* what to say to the OS. field here to remember it when accepting */ - - int sd; - int port; /* port on this side */ - int peer_port; /* port on the other side */ - char *peer_name; /* hostname of the other side */ - char *peer_proc; /* process on the other side */ - - void *data; /* plugin specific data */ - - /* buffer plugin specific data. Yeah, C is not OO, so I got to trick */ - gras_trp_bufdata_t *bufdata; -}s_gras_socket_t; - -void gras_trp_socket_new(int incomming, - gras_socket_t *dst); - -/* The drivers */ -typedef void (*gras_trp_setup_t)(gras_trp_plugin_t dst); - -void gras_trp_tcp_setup(gras_trp_plugin_t plug); -void gras_trp_iov_setup(gras_trp_plugin_t plug); -void gras_trp_file_setup(gras_trp_plugin_t plug); -void gras_trp_sg_setup(gras_trp_plugin_t plug); - -/* - - I'm tired of that shit. the select in SG has to create a socket to expeditor - manually do deal with the weirdness of the hostdata, themselves here to deal - with the weird channel concept of SG and convert them back to ports. - - When introducing buffered transport (which I want to get used in SG to debug - the buffering itself), we should not make the rest of the code aware of the - change and not specify code for this. This is bad design. - - But there is bad design all over the place, so fuck off for now, when we can - get rid of MSG and rely directly on SG, this crude hack can go away. But in - the meanwhile, I want to sleep this night (FIXME). - - Hu! You evil problem! Taste my axe! - -*/ - -gras_socket_t gras_trp_buf_init_sock(gras_socket_t sock); + 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 */