3 /* transport - low level communication (send/receive bunches of bytes) */
5 /* module's public interface exported within GRAS, but not to end user. */
7 /* Copyright (c) 2004 Martin Quinson. All rights reserved. */
9 /* This program is free software; you can redistribute it and/or modify it
10 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #ifndef GRAS_TRP_INTERFACE_H
13 #define GRAS_TRP_INTERFACE_H
15 #include "portable.h" /* sometimes needed for fd_set */
16 #include "simix/simix.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,char*peer_proc);
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,
54 void (*socket_server)(gras_trp_plugin_t self,
57 gras_socket_t (*socket_accept)(gras_socket_t from);
60 /* socket_close() is responsible of telling the OS that the socket is over,
61 but should not free the socket itself (beside the specific part) */
62 void (*socket_close)(gras_socket_t sd);
64 /* send/recv may be buffered */
65 void (*send)(gras_socket_t sd,
67 unsigned long int size,
68 int stable /* storage will survive until flush*/);
69 int (*recv)(gras_socket_t sd,
71 unsigned long int size);
72 /* raw_send/raw_recv is never buffered (use it for measurement stuff) */
73 void (*raw_send)(gras_socket_t sd,
75 unsigned long int size);
76 int (*raw_recv)(gras_socket_t sd,
78 unsigned long int size);
80 /* flush has to make sure that the pending communications are achieved */
81 void (*flush)(gras_socket_t sd);
83 void *data; /* plugin-specific data */
85 /* exit is responsible for freeing data and telling to the OS that
86 this plugin is gone */
87 /* exit=NULL, data gets brutally free()d by the generic interface.
88 (ie exit function needed only when data contains pointers) */
89 void (*exit)(gras_trp_plugin_t);
92 XBT_PUBLIC(gras_trp_plugin_t)
93 gras_trp_plugin_get_by_name(const char *name);
95 /* Data of this module specific to each process
96 * (used by sg_process.c to cleanup the SG channel cruft)
102 unsigned int name_len;
104 int myport; /* Port on which I listen myself */
106 xbt_dynar_t sockets; /* all sockets known to this process */
107 fd_set *fdset; /* idem, in another formalism */
109 /* SG only elements. In RL, they are part of the OS ;) */
111 /* List of sockets ready to be select()ed */
112 xbt_fifo_t msg_selectable_sockets; /* regular sockets */
113 xbt_fifo_t meas_selectable_sockets;/* measurement ones */
115 /* Synchronisation on msg_selectable_sockets */
116 smx_cond_t msg_select_cond;
117 smx_mutex_t msg_select_mutex;
118 /* Synchronisation on meas_selectable_sockets */
119 smx_cond_t meas_select_cond;
120 smx_mutex_t meas_select_mutex;
122 } s_gras_trp_procdata_t,*gras_trp_procdata_t;
124 /* Display the content of our socket set (debugging purpose) */
125 XBT_PUBLIC(void) gras_trp_socketset_dump(const char *name);
127 #endif /* GRAS_TRP_INTERFACE_H */