1 /* process - GRAS process handling (common code for RL and SG) */
3 /* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "xbt/sysdep.h"
11 #include "gras/transport.h"
12 #include "gras/datadesc.h"
13 #include "gras/messages.h"
14 #include "gras_modinter.h"
16 #include "gras/Virtu/virtu_private.h"
18 XBT_LOG_NEW_SUBCATEGORY(gras_virtu, gras, "Virtualization code");
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_virtu_process, gras_virtu,
20 "Process manipulation code");
22 /* Functions to handle gras_procdata_t->libdata cells*/
25 pvoid_f_void_t constructor;
26 void_f_pvoid_t destructor;
27 } s_gras_procdata_fabric_t, *gras_procdata_fabric_t;
29 static xbt_dynar_t _gras_procdata_fabrics = NULL; /* content: s_gras_procdata_fabric_t */
31 static void gras_procdata_fabric_free(void *fab)
33 free(((gras_procdata_fabric_t) fab)->name);
36 /** @brief declare the functions in charge of creating/destructing the procdata of a module
38 * This is intended to be called from the gras_<module>_register function.
39 * This returns the module ID you can use for gras_libdata_by_id()
41 int gras_procdata_add(const char *name, pvoid_f_void_t constructor,
42 void_f_pvoid_t destructor)
45 gras_procdata_fabric_t fab;
47 if (!_gras_procdata_fabrics) {
48 /* create the dynar if needed */
49 _gras_procdata_fabrics = xbt_dynar_new(sizeof(s_gras_procdata_fabric_t),
50 gras_procdata_fabric_free);
53 fab = xbt_dynar_push_ptr(_gras_procdata_fabrics);
55 fab->name = xbt_strdup(name);
56 fab->constructor = constructor;
57 fab->destructor = destructor;
59 return xbt_dynar_length(_gras_procdata_fabrics) - 1;
62 /* **************************************************************************
64 * **************************************************************************/
65 void *gras_userdata_get(void)
67 gras_procdata_t *pd = gras_procdata_get();
71 void *gras_userdata_set(void *ud)
73 gras_procdata_t *pd = gras_procdata_get();
79 void *gras_libdata_by_name(const char *name)
81 gras_procdata_t *pd = gras_procdata_get();
82 return gras_libdata_by_name_from_procdata(name, pd);
85 /* this function is splitted from previous to allow SG to get libdata from remote hosts */
86 void *gras_libdata_by_name_from_procdata(const char *name,
91 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
92 /* Damn, some new modules were added since procdata_init(). Amok? */
97 res = xbt_set_get_by_name(pd->libdata, name);
100 RETHROW1("Cannot retrieve the libdata associated to %s: %s", name);
105 void *gras_libdata_by_id(int id)
107 gras_procdata_t *pd = gras_procdata_get();
108 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
109 /* Damn, some new modules were added since procdata_init(). Amok? */
111 gras_procdata_init();
113 return xbt_set_get_by_id(pd->libdata, id);
117 void gras_procdata_init()
119 gras_procdata_t *pd = gras_procdata_get();
120 s_gras_procdata_fabric_t fab;
129 pd->libdata = xbt_set_new();
132 xbt_dynar_foreach(_gras_procdata_fabrics, cursor, fab) {
133 volatile int found = 0;
135 if (cursor + 1 <= xbt_set_length(pd->libdata)) {
136 DEBUG2("Skip fabric %d: there is already %ld libdata",
137 cursor, xbt_set_length(pd->libdata));
138 continue; /* allow to recall this function to get recently added fabrics */
140 DEBUG2("Go ahead for cursor %d, there is %ld libdata",
141 cursor, xbt_set_length(pd->libdata));
143 xbt_assert1(fab.name, "Name of fabric #%d is NULL!", cursor);
144 DEBUG1("Create the procdata for %s", fab.name);
145 /* Check for our own errors */
147 xbt_set_get_by_name(pd->libdata, fab.name);
155 THROW1(unknown_error, 0, "MayDay: two modules use '%s' as libdata name",
158 /* Add the data in place, after some more sanity checking */
159 elem = (*(fab.constructor)) ();
160 if (elem->name_len && elem->name_len != strlen(elem->name)) {
161 elem->name_len = strlen(elem->name);
163 ("Module '%s' constructor is borken: it does not set elem->name_len",
166 xbt_set_add(pd->libdata, elem, fab.destructor);
170 void gras_procdata_exit()
173 gras_procdata_t *pd = gras_procdata_get();
175 xbt_set_free(&(pd->libdata));
177 /* Remove procdata in reverse order wrt creation */
178 while ((len = xbt_dynar_length(_gras_procdata_fabrics))) {
179 xbt_dynar_remove_at(_gras_procdata_fabrics, len - 1, NULL);
181 xbt_dynar_free(&_gras_procdata_fabrics);
185 const char *gras_os_hostport()
187 static char *res = NULL;
189 free(res); /* my port may have changed */
190 res = bprintf("%s:%d", gras_os_myname(), gras_os_myport());
191 return (const char *) res;