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 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #ifndef GRAS_TRP_INTERFACE_H
11 #define GRAS_TRP_INTERFACE_H
13 #include "portable.h" /* sometimes needed for fd_set */
14 #include "simix/simix.h"
15 #include "xbt/queue.h"
20 extern int gras_opt_trp_nomoredata_on_close;
23 *** Main user functions
25 /* stable if we know the storage will keep as is until the next trp_flush */
26 XBT_PUBLIC(void) gras_trp_send(gras_socket_t sd, char *data, long int size,
28 XBT_PUBLIC(void) gras_trp_recv(gras_socket_t sd, char *data, long int size);
29 XBT_PUBLIC(void) gras_trp_flush(gras_socket_t sd);
31 /* Find which socket needs to be read next */
32 XBT_PUBLIC(gras_socket_t) gras_trp_select(double timeout);
34 /* Set the peer process name (used by messaging layer) */
35 XBT_PUBLIC(void) gras_socket_peer_proc_set(gras_socket_t sock,
43 typedef struct gras_trp_plugin_ s_gras_trp_plugin_t, *gras_trp_plugin_t;
46 struct gras_trp_plugin_ {
49 /* dst pointers are created and initialized with default values
50 before call to socket_client/server.
51 Retrive the info you need from there. */
52 void (*socket_client) (gras_trp_plugin_t self, gras_socket_t dst);
53 void (*socket_server) (gras_trp_plugin_t self, gras_socket_t dst);
55 gras_socket_t(*socket_accept) (gras_socket_t from);
58 /* socket_close() is responsible of telling the OS that the socket is over,
59 but should not free the socket itself (beside the specific part) */
60 void (*socket_close) (gras_socket_t sd);
62 /* send/recv may be buffered */
63 void (*send) (gras_socket_t sd,
65 unsigned long int size,
66 int stable /* storage will survive until flush */ );
67 int (*recv) (gras_socket_t sd, char *data, unsigned long int size);
68 /* raw_send/raw_recv is never buffered (use it for measurement stuff) */
69 void (*raw_send) (gras_socket_t sd,
70 const char *data, unsigned long int size);
71 int (*raw_recv) (gras_socket_t sd, char *data, unsigned long int size);
73 /* flush has to make sure that the pending communications are achieved */
74 void (*flush) (gras_socket_t sd);
76 void *data; /* plugin-specific data */
78 /* exit is responsible for freeing data and telling to the OS that
79 this plugin is gone */
80 /* exit=NULL, data gets brutally free()d by the generic interface.
81 (ie exit function needed only when data contains pointers) */
82 void (*exit) (gras_trp_plugin_t);
85 XBT_PUBLIC(gras_trp_plugin_t)
86 gras_trp_plugin_get_by_name(const char *name);
88 /* Data of this module specific to each process
89 * (used by sg_process.c to cleanup the SG channel cruft)
95 unsigned int name_len;
97 int myport; /* Port on which I listen myself */
99 xbt_dynar_t sockets; /* all sockets known to this process */
101 /* SG only elements. In RL, they are part of the OS ;) */
103 /* List of sockets ready to be select()ed */
104 xbt_queue_t msg_selectable_sockets; /* regular sockets */
105 xbt_queue_t meas_selectable_sockets; /* measurement ones */
107 } s_gras_trp_procdata_t, *gras_trp_procdata_t;
109 /* Display the content of our socket set (debugging purpose) */
110 XBT_PUBLIC(void) gras_trp_socketset_dump(const char *name);
112 #endif /* GRAS_TRP_INTERFACE_H */