/* module's private interface masked even to other parts of GRAS. */
-/* Authors: Martin Quinson */
-/* Copyright (C) 2004 Martin Quinson. */
+/* 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. */
+ * 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"
-#include "Transport/transport_interface.h"
+#include "xbt/sysdep.h"
+#include "xbt/log.h"
+#include "xbt/dynar.h"
+#include "xbt/dict.h"
-extern gras_dynar_t *_gras_trp_sockets; /* all existing sockets */
+#include "gras/emul.h" /* gras_if_RL() */
+#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).
+ (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 gras_socket_t _gras_lastly_selected_socket;
/**
* s_gras_socket:
*
* Description of a socket.
*/
-
-struct s_gras_socket {
- gras_trp_plugin_t *plugin;
-
- int incoming; /* true if incoming (server) sock, false if client sock */
- int accepting; /* true if master incoming sock in tcp */
+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 */
-
- void *specific; /* plugin specific data */
-};
-
-
-/* TCP driver */
-gras_error_t gras_trp_tcp_init(gras_trp_plugin_t **dst);
-
-/* SG driver */
-gras_error_t gras_trp_sg_init (gras_trp_plugin_t **dst);
+ 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);
#endif /* GRAS_TRP_PRIVATE_H */
