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 = xbt_dynar_new(sizeof(s_gras_procdata_fabric_t),
51 gras_procdata_fabric_free);
54 fab = xbt_dynar_push_ptr(_gras_procdata_fabrics);
56 fab->name = xbt_strdup(name);
57 fab->constructor = constructor;
58 fab->destructor = destructor;
60 return xbt_dynar_length(_gras_procdata_fabrics) - 1;
63 /* **************************************************************************
65 * **************************************************************************/
66 void *gras_userdata_get(void)
68 gras_procdata_t *pd = gras_procdata_get();
72 void *gras_userdata_set(void *ud)
74 gras_procdata_t *pd = gras_procdata_get();
80 void *gras_libdata_by_name(const char *name)
82 gras_procdata_t *pd = gras_procdata_get();
83 return gras_libdata_by_name_from_procdata(name, pd);
86 /* this function is splitted from previous to allow SG to get libdata from remote hosts */
87 void *gras_libdata_by_name_from_procdata(const char *name,
92 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
93 /* Damn, some new modules were added since procdata_init(). Amok? */
98 res = xbt_set_get_by_name(pd->libdata, name);
101 RETHROW1("Cannot retrieve the libdata associated to %s: %s", name);
106 void *gras_libdata_by_id(int id)
108 gras_procdata_t *pd = gras_procdata_get();
109 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
110 /* Damn, some new modules were added since procdata_init(). Amok? */
112 gras_procdata_init();
114 return xbt_set_get_by_id(pd->libdata, id);
118 void gras_procdata_init()
120 gras_procdata_t *pd = gras_procdata_get();
121 s_gras_procdata_fabric_t fab;
130 pd->libdata = xbt_set_new();
133 xbt_dynar_foreach(_gras_procdata_fabrics, cursor, fab) {
134 volatile int found = 0;
136 if (cursor + 1 <= xbt_set_length(pd->libdata)) {
137 DEBUG2("Skip fabric %d: there is already %ld libdata",
138 cursor, xbt_set_length(pd->libdata));
139 continue; /* allow to recall this function to get recently added fabrics */
141 DEBUG2("Go ahead for cursor %d, there is %ld libdata",
142 cursor, xbt_set_length(pd->libdata));
144 xbt_assert1(fab.name, "Name of fabric #%d is NULL!", cursor);
145 DEBUG1("Create the procdata for %s", fab.name);
146 /* Check for our own errors */
148 xbt_set_get_by_name(pd->libdata, fab.name);
156 THROW1(unknown_error, 0, "MayDay: two modules use '%s' as libdata name",
159 /* Add the data in place, after some more sanity checking */
160 elem = (*(fab.constructor)) ();
161 if (elem->name_len && elem->name_len != strlen(elem->name)) {
162 elem->name_len = strlen(elem->name);
164 ("Module '%s' constructor is borken: it does not set elem->name_len",
167 xbt_set_add(pd->libdata, elem, fab.destructor);
171 void gras_procdata_exit()
174 gras_procdata_t *pd = gras_procdata_get();
176 xbt_set_free(&(pd->libdata));
178 /* Remove procdata in reverse order wrt creation */
179 while ((len = xbt_dynar_length(_gras_procdata_fabrics))) {
180 xbt_dynar_remove_at(_gras_procdata_fabrics, len - 1, NULL);
182 xbt_dynar_free(&_gras_procdata_fabrics);
186 const char *gras_os_hostport()
188 static char *res = NULL;
190 free(res); /* my port may have changed */
191 res = bprintf("%s:%d", gras_os_myname(), gras_os_myport());
192 return (const char *) res;