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,"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) {
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,void_f_pvoid_t destructor) {
44 gras_procdata_fabric_t fab;
46 if (!_gras_procdata_fabrics) {
47 /* create the dynar if needed */
48 _gras_procdata_fabrics = xbt_dynar_new(sizeof(s_gras_procdata_fabric_t),
49 gras_procdata_fabric_free);
52 fab=xbt_dynar_push_ptr(_gras_procdata_fabrics);
54 fab->name = xbt_strdup(name);
55 fab->constructor = constructor;
56 fab->destructor = destructor;
57 return xbt_dynar_length(_gras_procdata_fabrics)-1;
60 /* **************************************************************************
62 * **************************************************************************/
63 void *gras_userdata_get(void) {
64 gras_procdata_t *pd=gras_procdata_get();
68 void gras_userdata_set(void *ud) {
69 gras_procdata_t *pd=gras_procdata_get();
74 void *gras_libdata_by_name(const char *name) {
75 gras_procdata_t *pd=gras_procdata_get();
79 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
80 /* Damn, some new modules were added since procdata_init(). Amok? */
86 res = xbt_set_get_by_name(pd->libdata, name);
88 RETHROW1("Cannot retrieve the libdata associated to %s: %s",name);
93 void *gras_libdata_by_id(int id) {
94 gras_procdata_t *pd=gras_procdata_get();
95 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
96 /* Damn, some new modules were added since procdata_init(). Amok? */
100 return xbt_set_get_by_id(pd->libdata, id);
104 gras_procdata_init() {
105 gras_procdata_t *pd=gras_procdata_get();
106 s_gras_procdata_fabric_t fab;
116 pd->libdata = xbt_set_new();
119 xbt_dynar_foreach(_gras_procdata_fabrics,cursor,fab){
120 volatile int found = 0;
122 if (cursor+1 <= xbt_set_length(pd->libdata)) {
123 DEBUG2("Skip fabric %d: there is already %ld libdata",
124 cursor, xbt_set_length(pd->libdata));
125 continue; /* allow to recall this function to get recently added fabrics */
127 DEBUG2("Go ahead for cursor %d, there is %ld libdata",
128 cursor,xbt_set_length(pd->libdata));
130 xbt_assert1(fab.name,"Name of fabric #%d is NULL!",cursor);
131 DEBUG1("Create the procdata for %s",fab.name);
132 /* Check for our own errors */
134 data = xbt_set_get_by_name(pd->libdata, fab.name);
141 THROW1(unknown_error,0,"MayDay: two modules use '%s' as libdata name", fab.name);
143 /* Add the data in place, after some more sanity checking */
144 elem = (fab.constructor)();
145 if (elem->name_len && elem->name_len != strlen(elem->name)) {
146 elem->name_len = strlen(elem->name);
147 WARN1("Module '%s' constructor is borken: it does not set elem->name_len",
151 xbt_set_add(pd->libdata, elem, fab.destructor);
156 gras_procdata_exit() {
158 gras_procdata_t *pd=gras_procdata_get();
160 xbt_set_free(&( pd->libdata ));
162 /* Remove procdata in reverse order wrt creation */
163 while ((len=xbt_dynar_length(_gras_procdata_fabrics))) {
164 xbt_dynar_remove_at(_gras_procdata_fabrics,len-1,NULL);
166 xbt_dynar_free( & _gras_procdata_fabrics );