3 /* process - GRAS process handling (common code for RL and SG) */
5 /* Copyright (c) 2003, 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. */
11 #include "xbt/sysdep.h"
13 #include "gras/transport.h"
14 #include "gras/datadesc.h"
15 #include "gras/messages.h"
16 #include "gras_modinter.h"
18 #include "gras/Virtu/virtu_private.h"
20 XBT_LOG_NEW_SUBCATEGORY(gras_virtu, gras, "Virtualization code");
21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_virtu_process, gras_virtu,
22 "Process manipulation code");
24 /* Functions to handle gras_procdata_t->libdata cells*/
27 pvoid_f_void_t constructor;
28 void_f_pvoid_t destructor;
29 } s_gras_procdata_fabric_t, *gras_procdata_fabric_t;
31 static xbt_dynar_t _gras_procdata_fabrics = NULL; /* content: s_gras_procdata_fabric_t */
33 static void gras_procdata_fabric_free(void *fab)
35 free(((gras_procdata_fabric_t) fab)->name);
38 /** @brief declare the functions in charge of creating/destructing the procdata of a module
40 * This is intended to be called from the gras_<module>_register function.
41 * This returns the module ID you can use for gras_libdata_by_id()
43 int gras_procdata_add(const char *name, pvoid_f_void_t constructor,
44 void_f_pvoid_t destructor)
47 gras_procdata_fabric_t fab;
49 if (!_gras_procdata_fabrics) {
50 /* create the dynar if needed */
51 _gras_procdata_fabrics = xbt_dynar_new(sizeof(s_gras_procdata_fabric_t),
52 gras_procdata_fabric_free);
55 fab = xbt_dynar_push_ptr(_gras_procdata_fabrics);
57 fab->name = xbt_strdup(name);
58 fab->constructor = constructor;
59 fab->destructor = destructor;
61 return xbt_dynar_length(_gras_procdata_fabrics) - 1;
64 /* **************************************************************************
66 * **************************************************************************/
67 void *gras_userdata_get(void)
69 gras_procdata_t *pd = gras_procdata_get();
73 void *gras_userdata_set(void *ud)
75 gras_procdata_t *pd = gras_procdata_get();
81 void *gras_libdata_by_name(const char *name)
83 gras_procdata_t *pd = gras_procdata_get();
84 return gras_libdata_by_name_from_procdata(name, pd);
87 /* this function is splitted from previous to allow SG to get libdata from remote hosts */
88 void *gras_libdata_by_name_from_procdata(const char *name,
93 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
94 /* Damn, some new modules were added since procdata_init(). Amok? */
99 res = xbt_set_get_by_name(pd->libdata, name);
102 RETHROW1("Cannot retrieve the libdata associated to %s: %s", name);
106 void *gras_libdata_by_id(int id) {
107 return gras_libdata_by_id_from_procdata(id,gras_procdata_get());
109 void *gras_libdata_by_id_from_procdata(int id,gras_procdata_t *pd) {
110 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
111 /* Damn, some new modules were added since procdata_init(). Amok? */
113 gras_procdata_init();
115 return xbt_set_get_by_id(pd->libdata, id);
119 void gras_procdata_init()
121 gras_procdata_t *pd = gras_procdata_get();
122 s_gras_procdata_fabric_t fab;
131 pd->libdata = xbt_set_new();
134 xbt_dynar_foreach(_gras_procdata_fabrics, cursor, fab) {
135 volatile int found = 0;
137 if (cursor + 1 <= xbt_set_length(pd->libdata)) {
138 DEBUG2("Skip fabric %d: there is already %ld libdata",
139 cursor, xbt_set_length(pd->libdata));
140 continue; /* allow to recall this function to get recently added fabrics */
142 DEBUG2("Go ahead for cursor %d, there is %ld libdata",
143 cursor, xbt_set_length(pd->libdata));
145 xbt_assert1(fab.name, "Name of fabric #%d is NULL!", cursor);
146 DEBUG1("Create the procdata for %s", fab.name);
147 /* Check for our own errors */
149 xbt_set_get_by_name(pd->libdata, fab.name);
157 THROW1(unknown_error, 0, "MayDay: two modules use '%s' as libdata name",
160 /* Add the data in place, after some more sanity checking */
161 elem = (*(fab.constructor)) ();
162 if (elem->name_len && elem->name_len != strlen(elem->name)) {
163 elem->name_len = strlen(elem->name);
165 ("Module '%s' constructor is borken: it does not set elem->name_len",
168 xbt_set_add(pd->libdata, elem, fab.destructor);
172 void gras_procdata_exit()
175 gras_procdata_t *pd = gras_procdata_get();
177 xbt_set_free(&(pd->libdata));
179 /* Remove procdata in reverse order wrt creation */
180 while ((len = xbt_dynar_length(_gras_procdata_fabrics))) {
181 xbt_dynar_remove_at(_gras_procdata_fabrics, len - 1, NULL);
183 xbt_dynar_free(&_gras_procdata_fabrics);
187 const char *gras_os_hostport()
189 static char *res = NULL;
191 free(res); /* my port may have changed */
192 res = bprintf("%s:%d", gras_os_myname(), gras_os_myport());
193 return (const char *) res;