X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/f787351e3355ab558d4f491bc52bef2012eaa3e8..18c57b27dd71ee7839c6a90368c845886a87d638:/src/gras/Transport/transport_private.h diff --git a/src/gras/Transport/transport_private.h b/src/gras/Transport/transport_private.h index 9cc653d3af..c74efd51ee 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. */ @@ -17,27 +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. */ + 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; /** @@ -47,46 +50,50 @@ extern gras_socket_t _gras_lastly_selected_socket; */ typedef struct gras_trp_bufdata_ gras_trp_bufdata_t; -typedef struct s_gras_socket { +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 */ + + 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 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. */ + + int recvd:1; /* true if the recvd_val field contains one byte of the stream (that we peek'ed to check the socket validity) */ + char recvd_val; /* what we peeked from the socket, if any */ + + int refcount; /* refcounting on shared sockets */ + + unsigned long int buf_size; /* what to say to the OS. + Field here to remember it when accepting */ + + int sd; + + 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; - -XBT_PUBLIC void gras_trp_socket_new(int incomming, - gras_socket_t *dst); + 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); +typedef void (*gras_trp_setup_t) (gras_trp_plugin_t dst); -XBT_PUBLIC void gras_trp_tcp_setup(gras_trp_plugin_t plug); -XBT_PUBLIC void gras_trp_iov_setup(gras_trp_plugin_t plug); -XBT_PUBLIC void gras_trp_file_setup(gras_trp_plugin_t plug); -XBT_PUBLIC void gras_trp_sg_setup(gras_trp_plugin_t plug); +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); -/* +/* FIXME: this should be solved by SIMIX 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 @@ -104,6 +111,6 @@ XBT_PUBLIC void gras_trp_sg_setup(gras_trp_plugin_t plug); */ -XBT_PUBLIC gras_socket_t gras_trp_buf_init_sock(gras_socket_t sock); +gras_socket_t gras_trp_buf_init_sock(gras_socket_t sock); -#endif /* GRAS_TRP_PRIVATE_H */ +#endif /* GRAS_TRP_PRIVATE_H */