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");
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) {
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,void_f_pvoid_t destructor) {
43 gras_procdata_fabric_t fab;
45 if (!_gras_procdata_fabrics) {
46 /* create the dynar if needed */
47 _gras_procdata_fabrics = xbt_dynar_new(sizeof(s_gras_procdata_fabric_t),
48 gras_procdata_fabric_free);
51 fab=xbt_dynar_push_ptr(_gras_procdata_fabrics);
53 fab->name = xbt_strdup(name);
54 fab->constructor = constructor;
55 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();
76 return gras_libdata_by_name_from_procdata(name,pd);
79 /* this function is splitted from previous to allow SG to get libdata from remote hosts */
80 void *gras_libdata_by_name_from_procdata(const char*name, gras_procdata_t* pd) {
83 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
84 /* Damn, some new modules were added since procdata_init(). Amok? */
89 res = xbt_set_get_by_name(pd->libdata, name);
91 RETHROW1("Cannot retrieve the libdata associated to %s: %s",name);
96 void *gras_libdata_by_id(int id) {
97 gras_procdata_t *pd=gras_procdata_get();
98 if (xbt_set_length(pd->libdata) < xbt_dynar_length(_gras_procdata_fabrics)) {
99 /* Damn, some new modules were added since procdata_init(). Amok? */
101 gras_procdata_init();
103 return xbt_set_get_by_id(pd->libdata, id);
108 gras_procdata_init() {
109 gras_procdata_t *pd=gras_procdata_get();
110 s_gras_procdata_fabric_t fab;
119 pd->libdata = xbt_set_new();
122 xbt_dynar_foreach(_gras_procdata_fabrics,cursor,fab){
123 volatile int found = 0;
125 if (cursor+1 <= xbt_set_length(pd->libdata)) {
126 DEBUG2("Skip fabric %d: there is already %ld libdata",
127 cursor, xbt_set_length(pd->libdata));
128 continue; /* allow to recall this function to get recently added fabrics */
130 DEBUG2("Go ahead for cursor %d, there is %ld libdata",
131 cursor,xbt_set_length(pd->libdata));
133 xbt_assert1(fab.name,"Name of fabric #%d is NULL!",cursor);
134 DEBUG1("Create the procdata for %s",fab.name);
135 /* Check for our own errors */
137 xbt_set_get_by_name(pd->libdata, fab.name);
144 THROW1(unknown_error,0,"MayDay: two modules use '%s' as libdata name", fab.name);
146 /* Add the data in place, after some more sanity checking */
147 elem = (*(fab.constructor))();
148 if (elem->name_len && elem->name_len != strlen(elem->name)) {
149 elem->name_len = strlen(elem->name);
150 WARN1("Module '%s' constructor is borken: it does not set elem->name_len",
153 xbt_set_add(pd->libdata, elem, fab.destructor);
158 gras_procdata_exit() {
160 gras_procdata_t *pd=gras_procdata_get();
162 xbt_set_free(&( pd->libdata ));
164 /* Remove procdata in reverse order wrt creation */
165 while ((len=xbt_dynar_length(_gras_procdata_fabrics))) {
166 xbt_dynar_remove_at(_gras_procdata_fabrics,len-1,NULL);
168 xbt_dynar_free( & _gras_procdata_fabrics );
172 const char *gras_os_hostport() {
173 static char *res=NULL;
175 free(res); /* my port may have changed */
176 res = bprintf("%s:%d",gras_os_myname(),gras_os_myport());
177 return (const char*)res;