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optimisation.c
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1.26:
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Tue Jun 21 15:26:35 2011 UTC (13 years, 10 months ago) by
bertrand
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Correction d'une réinitialisation sauvage de la pile des variables par niveau
dans la copie de la structure de description du processus. Cela corrige
la fonction SPAWN qui échouait sur un segmentation fault car la pile des
variables par niveau était vide alors même que l'arbre des variables contenait
bien les variables. Passage à la prerelease 2.
1: /*
2: ================================================================================
3: RPL/2 (R) version 4.1.0.prerelease.2
4: Copyright (C) 1989-2011 Dr. BERTRAND Joël
5:
6: This file is part of RPL/2.
7:
8: RPL/2 is free software; you can redistribute it and/or modify it
9: under the terms of the CeCILL V2 License as published by the french
10: CEA, CNRS and INRIA.
11:
12: RPL/2 is distributed in the hope that it will be useful, but WITHOUT
13: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL V2 License
15: for more details.
16:
17: You should have received a copy of the CeCILL License
18: along with RPL/2. If not, write to info@cecill.info.
19: ================================================================================
20: */
21:
22:
23: #include "rpl-conv.h"
24:
25:
26: /*
27: ================================================================================
28: Boucle principale optimisé de l'interprète RPL/2
29: ================================================================================
30: Entrées : structure sur l'état du processus
31: --------------------------------------------------------------------------------
32: Sorties : Néant
33: --------------------------------------------------------------------------------
34: Effets de bord : néant
35: ================================================================================
36: */
37:
38: logical1
39: sequenceur_optimise(struct_processus *s_etat_processus)
40: {
41: int i;
42: int nb_variables;
43: int point_entree;
44:
45: logical1 erreur;
46:
47: struct_objet *programme_principal;
48:
49: struct_tableau_variables *tableau;
50:
51: unsigned char *message;
52:
53: unsigned long adresse_point_entree;
54:
55: if ((*s_etat_processus).debug == d_vrai)
56: if (((*s_etat_processus).type_debug &
57: d_debug_analyse) != 0)
58: {
59: if ((*s_etat_processus).langue == 'F')
60: {
61: printf("+++Optimisation [%d]\n", (int) getpid());
62: }
63: else
64: {
65: printf("+++Optimization [%d]\n", (int) getpid());
66: }
67:
68: printf("\n");
69: fflush(stdout);
70: }
71:
72: point_entree = -1;
73: adresse_point_entree = 0;
74:
75: empilement_pile_systeme(s_etat_processus);
76: (*(*s_etat_processus).l_base_pile_systeme).retour_definition = 'Y';
77: (*s_etat_processus).autorisation_empilement_programme = 'Y';
78: (*s_etat_processus).mode_execution_programme = 'N';
79:
80: nb_variables = nombre_variables(s_etat_processus,
81: (*s_etat_processus).s_arbre_variables);
82:
83: if ((tableau = malloc(nb_variables * sizeof(struct_tableau_variables)))
84: == NULL)
85: {
86: if ((*s_etat_processus).langue == 'F')
87: {
88: printf("+++Système : Mémoire insuffisante\n");
89: }
90: else
91: {
92: printf("+++System : Not enough memory\n");
93: }
94:
95: return(d_erreur);
96: }
97:
98: liste_variables(s_etat_processus, tableau, 0,
99: (*s_etat_processus).s_arbre_variables);
100:
101: for(i = 0; i < nb_variables; i++)
102: {
103: if (tableau[i].niveau == 0)
104: {
105: // Variables qui contiennent les points d'entrée des définitions.
106:
107: (*s_etat_processus).position_courante = (*((unsigned long *)
108: (*(tableau[i].objet)).objet));
109:
110: if (point_entree == -1)
111: {
112: adresse_point_entree = (*s_etat_processus).position_courante;
113: point_entree = i;
114: }
115: else
116: {
117: if ((*s_etat_processus).position_courante <
118: adresse_point_entree)
119: {
120: adresse_point_entree = (*s_etat_processus)
121: .position_courante;
122: point_entree = i;
123: }
124: }
125:
126: if ((erreur = recherche_instruction_suivante(s_etat_processus))
127: == d_erreur)
128: {
129: if ((*s_etat_processus).langue == 'F')
130: {
131: printf("+++Fatal : Optimisation impossible\n");
132: }
133: else
134: {
135: printf("+++Fatal : Optimization failed\n");
136: }
137:
138: free(tableau);
139: return(d_erreur);
140: }
141:
142: recherche_type(s_etat_processus);
143:
144: if (((*s_etat_processus).erreur_execution != d_ex) ||
145: ((*s_etat_processus).erreur_systeme != d_es))
146: {
147: if ((*s_etat_processus).langue == 'F')
148: {
149: printf("+++Fatal : Optimisation impossible\n");
150: }
151: else
152: {
153: printf("+++Fatal : Optimization failed\n");
154: }
155:
156: free(tableau);
157: return(d_erreur);
158: }
159:
160: // Modification de la variable. Il n'existe à cet instant
161: // que des variables de niveau 0.
162:
163: if (recherche_variable(s_etat_processus, tableau[i].nom) ==
164: d_faux)
165: {
166: if ((*s_etat_processus).langue == 'F')
167: {
168: printf("+++Fatal : Optimisation impossible\n");
169: }
170: else
171: {
172: printf("+++Fatal : Optimization failed\n");
173: }
174:
175: free(tableau);
176: return(d_erreur);
177: }
178:
179: liberation(s_etat_processus, tableau[i].objet);
180:
181: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
182: &((*(*s_etat_processus).pointeur_variable_courante).objet))
183: == d_erreur)
184: {
185: if ((*s_etat_processus).langue == 'F')
186: {
187: printf("+++Fatal : Optimisation impossible\n");
188: }
189: else
190: {
191: printf("+++Fatal : Optimization failed\n");
192: }
193:
194: free(tableau);
195: return(d_erreur);
196: }
197:
198: (*(*s_etat_processus).pointeur_variable_courante).origine = 'E';
199: free((*s_etat_processus).instruction_courante);
200:
201: if (point_entree == i)
202: {
203: programme_principal = (*(*s_etat_processus)
204: .pointeur_variable_courante).objet;
205: }
206: }
207: }
208:
209: if (point_entree == -1)
210: {
211: if ((*s_etat_processus).langue == 'F')
212: {
213: printf("+++Fatal : Optimisation impossible\n");
214: }
215: else
216: {
217: printf("+++Fatal : Optimization failed\n");
218: }
219:
220: free(tableau);
221: return(d_erreur);
222: }
223:
224: if ((*s_etat_processus).debug == d_vrai)
225: {
226: if (((*s_etat_processus).type_debug &
227: d_debug_analyse) != 0)
228: {
229: printf("\n");
230:
231: if ((*s_etat_processus).langue == 'F')
232: {
233: printf("[%d] Optimisation achevée\n", (int) getpid());
234: }
235: else
236: {
237: printf("[%d] Optimization done\n", (int) getpid());
238: }
239:
240: printf("\n");
241: fflush(stdout);
242: }
243: }
244:
245: (*s_etat_processus).retour_routine_evaluation = 'Y';
246:
247: free((*s_etat_processus).definitions_chainees);
248:
249: if (((*s_etat_processus).definitions_chainees =
250: malloc(sizeof(unsigned char))) == NULL)
251: {
252: if ((*s_etat_processus).langue == 'F')
253: {
254: printf("+++Fatal : Optimisation impossible\n");
255: }
256: else
257: {
258: printf("+++Fatal : Optimization failed\n");
259: }
260:
261: free(tableau);
262: return(d_erreur);
263: }
264:
265: (*s_etat_processus).definitions_chainees[0] = d_code_fin_chaine;
266: (*s_etat_processus).longueur_definitions_chainees = 0;
267: (*s_etat_processus).evaluation_expression_compilee = 'Y';
268:
269: if ((*s_etat_processus).profilage == d_vrai)
270: {
271: profilage(s_etat_processus, tableau[point_entree].nom);
272: }
273:
274: if ((*s_etat_processus).erreur_systeme != d_es)
275: {
276: if ((*s_etat_processus).langue == 'F')
277: {
278: printf("+++Système : Mémoire insuffisante\n");
279: }
280: else
281: {
282: printf("+++System : Not enough memory\n");
283: }
284:
285: free(tableau);
286: return(d_erreur);
287: }
288:
289: free(tableau);
290:
291: erreur = evaluation(s_etat_processus, programme_principal, 'E');
292:
293: if ((*s_etat_processus).profilage == d_vrai)
294: {
295: profilage(s_etat_processus, NULL);
296: }
297:
298: (*s_etat_processus).mode_execution_programme = 'N';
299:
300: if (((*s_etat_processus).erreur_execution != d_ex) ||
301: ((*s_etat_processus).exception != d_ep) ||
302: ((*s_etat_processus).erreur_systeme != d_es))
303: {
304: printf("%s [%d]\n", message = messages(s_etat_processus),
305: (int) getpid());
306:
307: if (test_cfsf(s_etat_processus, 51) == d_faux)
308: {
309: printf("%s", ds_beep);
310: }
311:
312: free(message);
313: }
314:
315: return(erreur);
316: }
317:
318: // vim: ts=4
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