1 /* transport - low level communication (send/receive bunches of bytes) */
3 /* module's public interface exported within GRAS, but not to end user. */
5 /* Copyright (c) 2004, 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
6 * All rights reserved. */
8 /* This program is free software; you can redistribute it and/or modify it
9 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #ifndef GRAS_TRP_INTERFACE_H
12 #define GRAS_TRP_INTERFACE_H
14 #include "portable.h" /* sometimes needed for fd_set */
15 #include "simix/simix.h"
16 #include "xbt/queue.h"
21 extern int gras_opt_trp_nomoredata_on_close;
24 *** Main user functions
26 /* stable if we know the storage will keep as is until the next trp_flush */
27 XBT_PUBLIC(void) gras_trp_send(gras_socket_t sd, char *data, long int size,
29 XBT_PUBLIC(void) gras_trp_recv(gras_socket_t sd, char *data, long int size);
30 XBT_PUBLIC(void) gras_trp_flush(gras_socket_t sd);
32 /* Find which socket needs to be read next */
33 XBT_PUBLIC(gras_socket_t) gras_trp_select(double timeout);
35 /* Set the peer process name (used by messaging layer) */
36 XBT_PUBLIC(void) gras_socket_peer_proc_set(gras_socket_t sock,
44 typedef struct gras_trp_plugin_ s_gras_trp_plugin_t, *gras_trp_plugin_t;
47 struct gras_trp_plugin_ {
50 /* dst pointers are created and initialized with default values
51 before call to socket_client/server.
52 Retrive the info you need from there. */
53 void (*socket_client) (gras_trp_plugin_t self, gras_socket_t dst);
54 void (*socket_server) (gras_trp_plugin_t self, gras_socket_t dst);
56 gras_socket_t(*socket_accept) (gras_socket_t from);
59 /* socket_close() is responsible of telling the OS that the socket is over,
60 but should not free the socket itself (beside the specific part) */
61 void (*socket_close) (gras_socket_t sd);
63 /* send/recv may be buffered */
64 void (*send) (gras_socket_t sd,
66 unsigned long int size,
67 int stable /* storage will survive until flush */ );
68 int (*recv) (gras_socket_t sd, char *data, unsigned long int size);
69 /* raw_send/raw_recv is never buffered (use it for measurement stuff) */
70 void (*raw_send) (gras_socket_t sd,
71 const char *data, unsigned long int size);
72 int (*raw_recv) (gras_socket_t sd, char *data, unsigned long int size);
74 /* flush has to make sure that the pending communications are achieved */
75 void (*flush) (gras_socket_t sd);
77 void *data; /* plugin-specific data */
79 /* exit is responsible for freeing data and telling to the OS that
80 this plugin is gone */
81 /* exit=NULL, data gets brutally free()d by the generic interface.
82 (ie exit function needed only when data contains pointers) */
83 void (*exit) (gras_trp_plugin_t);
86 XBT_PUBLIC(gras_trp_plugin_t)
87 gras_trp_plugin_get_by_name(const char *name);
89 /* Data of this module specific to each process
90 * (used by sg_process.c to cleanup the SG channel cruft)
96 unsigned int name_len;
98 int myport; /* Port on which I listen myself */
100 xbt_dynar_t sockets; /* all sockets known to this process */
102 /* SG only elements. In RL, they are part of the OS ;) */
104 /* List of sockets ready to be select()ed */
105 xbt_queue_t msg_selectable_sockets; /* regular sockets */
106 xbt_queue_t meas_selectable_sockets; /* measurement ones */
108 } s_gras_trp_procdata_t, *gras_trp_procdata_t;
110 /* Display the content of our socket set (debugging purpose) */
111 XBT_PUBLIC(void) gras_trp_socketset_dump(const char *name);
113 #endif /* GRAS_TRP_INTERFACE_H */