1 /* process - GRAS process handling (common code for RL and SG) */
3 /* Copyright (c) 2004, 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "xbt/sysdep.h"
12 #include "gras/transport.h"
13 #include "gras/datadesc.h"
14 #include "gras/messages.h"
15 #include "gras_modinter.h"
17 #include "gras/Virtu/virtu_private.h"
19 XBT_LOG_NEW_SUBCATEGORY(gras_virtu, gras, "Virtualization code");
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_virtu_process, gras_virtu,
21 "Process manipulation code");
23 /* Functions to handle gras_procdata_t->libdata cells*/
26 pvoid_f_void_t constructor;
27 void_f_pvoid_t destructor;
28 } s_gras_procdata_fabric_t, *gras_procdata_fabric_t;
30 static xbt_dynar_t _gras_procdata_fabrics = NULL; /* content: s_gras_procdata_fabric_t */
32 static void gras_procdata_fabric_free(void *fab)
34 free(((gras_procdata_fabric_t) fab)->name);
37 /** @brief declare the functions in charge of creating/destructing the procdata of a module
39 * This is intended to be called from the gras_<module>_register function.
40 * This returns the module ID you can use for gras_libdata_by_id()
42 int gras_procdata_add(const char *name, pvoid_f_void_t constructor,
43 void_f_pvoid_t destructor)
46 gras_procdata_fabric_t fab;
48 if (!_gras_procdata_fabrics) {
49 /* create the dynar if needed */
50 _gras_procdata_fabrics =
51 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) <
94 xbt_dynar_length(_gras_procdata_fabrics)) {
95 /* Damn, some new modules were added since procdata_init(). Amok? */
100 res = xbt_set_get_by_name(pd->libdata, name);
103 RETHROWF("Cannot retrieve the libdata associated to %s: %s", name);
108 void *gras_libdata_by_id(int id)
110 gras_procdata_t *pd = gras_procdata_get();
111 if (xbt_set_length(pd->libdata) <
112 xbt_dynar_length(_gras_procdata_fabrics)) {
113 /* Damn, some new modules were added since procdata_init(). Amok? */
115 gras_procdata_init();
117 return xbt_set_get_by_id(pd->libdata, id);
121 void gras_procdata_init()
123 gras_procdata_t *pd = gras_procdata_get();
124 s_gras_procdata_fabric_t fab;
133 pd->libdata = xbt_set_new();
136 xbt_dynar_foreach(_gras_procdata_fabrics, cursor, fab) {
137 volatile int found = 0;
139 if (cursor + 1 <= xbt_set_length(pd->libdata)) {
140 XBT_DEBUG("Skip fabric %d: there is already %ld libdata",
141 cursor, xbt_set_length(pd->libdata));
142 continue; /* allow to recall this function to get recently added fabrics */
144 XBT_DEBUG("Go ahead for cursor %d, there is %ld libdata",
145 cursor, xbt_set_length(pd->libdata));
147 xbt_assert(fab.name, "Name of fabric #%d is NULL!", cursor);
148 XBT_DEBUG("Create the procdata for %s", fab.name);
149 /* Check for our own errors */
151 xbt_set_get_by_name(pd->libdata, fab.name);
159 THROWF(unknown_error, 0,
160 "MayDay: two modules use '%s' as libdata name", fab.name);
162 /* Add the data in place, after some more sanity checking */
163 elem = (*(fab.constructor)) ();
164 if (elem->name_len && elem->name_len != strlen(elem->name)) {
165 elem->name_len = strlen(elem->name);
167 ("Module '%s' constructor is borken: it does not set elem->name_len",
170 xbt_set_add(pd->libdata, elem, fab.destructor);
174 void gras_procdata_exit()
177 gras_procdata_t *pd = gras_procdata_get();
179 xbt_set_free(&(pd->libdata));
181 /* Remove procdata in reverse order wrt creation */
182 while ((len = xbt_dynar_length(_gras_procdata_fabrics))) {
183 xbt_dynar_remove_at(_gras_procdata_fabrics, len - 1, NULL);
185 xbt_dynar_free(&_gras_procdata_fabrics);
189 const char *gras_os_hostport()
191 static char *res = NULL;
193 free(res); /* my port may have changed */
194 res = bprintf("%s:%d", gras_os_myname(), gras_os_myport());
195 return (const char *) res;