Return to repo.c CVS log

Up to [GCC 2.x] / gcc / cp

Annotation of gcc/cp/repo.c, revision 1.1

1.1     ! root        1: /* Code to maintain a C++ template repository.
        !             2:    Copyright (C) 1995 Free Software Foundation, Inc.
        !             3:    Contributed by Jason Merrill ([email protected])
        !             4: 
        !             5: This file is part of GNU CC.
        !             6: 
        !             7: GNU CC is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU General Public License as published by
        !             9: the Free Software Foundation; either version 2, or (at your option)
        !            10: any later version.
        !            11: 
        !            12: GNU CC is distributed in the hope that it will be useful,
        !            13: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15: GNU General Public License for more details.
        !            16: 
        !            17: You should have received a copy of the GNU General Public License
        !            18: along with GNU CC; see the file COPYING.  If not, write to
        !            19: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            20: Boston, MA 02111-1307, USA.  */
        !            21: 
        !            22: /* My strategy here is as follows:
        !            23: 
        !            24:    Everything should be emitted in a translation unit where it is used.
        !            25:    The results of the automatic process should be easily reproducible with
        !            26:    explicit code.  */
        !            27: 
        !            28: #include <stdio.h>
        !            29: #include "config.h"
        !            30: #include "tree.h"
        !            31: #include "cp-tree.h"
        !            32: #include "input.h"
        !            33: #include "obstack.h"
        !            34: 
        !            35: extern char * rindex ();
        !            36: extern char * getenv ();
        !            37: extern char * getpwd ();
        !            38: 
        !            39: static tree pending_repo;
        !            40: static tree original_repo;
        !            41: static char *repo_name;
        !            42: static FILE *repo_file;
        !            43: 
        !            44: extern int flag_use_repository;
        !            45: extern int errorcount, sorrycount;
        !            46: extern struct obstack temporary_obstack;
        !            47: extern struct obstack permanent_obstack;
        !            48: 
        !            49: #define IDENTIFIER_REPO_USED(NODE)   (TREE_LANG_FLAG_3 (NODE))
        !            50: #define IDENTIFIER_REPO_CHOSEN(NODE) (TREE_LANG_FLAG_4 (NODE))
        !            51: 
        !            52: /* Record the flags used to compile this translation unit.  */
        !            53: 
        !            54: void
        !            55: repo_compile_flags (argc, argv)
        !            56:      int argc;
        !            57:      char **argv;
        !            58: {
        !            59: }
        !            60: 
        !            61: /* If this template has not been seen before, add a note to the repository
        !            62:    saying where the declaration was.  This may be used to find the
        !            63:    definition at link time.  */
        !            64: 
        !            65: void
        !            66: repo_template_declared (t)
        !            67:      tree t;
        !            68: {}
        !            69: 
        !            70: /* Note where the definition of a template lives so that instantiations can
        !            71:    be generated later.  */
        !            72: 
        !            73: void
        !            74: repo_template_defined (t)
        !            75:      tree t;
        !            76: {}
        !            77: 
        !            78: /* Note where the definition of a class lives to that template
        !            79:    instantiations can use it.  */
        !            80: 
        !            81: void
        !            82: repo_class_defined (t)
        !            83:      tree t;
        !            84: {}
        !            85: 
        !            86: tree
        !            87: repo_get_id (t)
        !            88:      tree t;
        !            89: {
        !            90:   if (TREE_CODE_CLASS (TREE_CODE (t)) == 't')
        !            91:     {
        !            92:       t = TYPE_BINFO_VTABLE (t);
        !            93:       if (t == NULL_TREE)
        !            94:        return t;
        !            95:     }
        !            96:   return DECL_ASSEMBLER_NAME (t);
        !            97: }
        !            98: 
        !            99: /* Note that a template has been used.  If we can see the definition, offer
        !           100:    to emit it. */
        !           101: 
        !           102: void
        !           103: repo_template_used (t)
        !           104:      tree t;
        !           105: {
        !           106:   tree id;
        !           107: 
        !           108:   if (! flag_use_repository)
        !           109:     return;
        !           110: 
        !           111:   id = repo_get_id (t);
        !           112:   if (id == NULL_TREE)
        !           113:     return;
        !           114:   
        !           115:   if (TREE_CODE_CLASS (TREE_CODE (t)) == 't')
        !           116:     {
        !           117:       if (IDENTIFIER_REPO_CHOSEN (id))
        !           118:        mark_class_instantiated (t, 0);
        !           119:     }
        !           120:   else if (TREE_CODE_CLASS (TREE_CODE (t)) == 'd')
        !           121:     {
        !           122:       if (IDENTIFIER_REPO_CHOSEN (id))
        !           123:        mark_function_instantiated (t, 0);
        !           124:     }
        !           125:   else
        !           126:     my_friendly_abort (1);
        !           127: 
        !           128:   if (! IDENTIFIER_REPO_USED (id))
        !           129:     {
        !           130:       IDENTIFIER_REPO_USED (id) = 1;
        !           131:       pending_repo = perm_tree_cons (NULL_TREE, id, pending_repo);
        !           132:     }
        !           133: }
        !           134: 
        !           135: /* Note that the vtable for a class has been used, and offer to emit it.  */
        !           136: 
        !           137: void
        !           138: repo_vtable_used (t)
        !           139:      tree t;
        !           140: {
        !           141:   if (! flag_use_repository)
        !           142:     return;
        !           143: 
        !           144:   pending_repo = perm_tree_cons (NULL_TREE, t, pending_repo);
        !           145: }
        !           146: 
        !           147: /* Note that an inline with external linkage has been used, and offer to
        !           148:    emit it.  */
        !           149: 
        !           150: void
        !           151: repo_inline_used (fn)
        !           152:      tree fn;
        !           153: {
        !           154:   if (! flag_use_repository)
        !           155:     return;
        !           156: 
        !           157:   /* Member functions of polymorphic classes go with their vtables.  */
        !           158:   if (DECL_FUNCTION_MEMBER_P (fn) && TYPE_VIRTUAL_P (DECL_CLASS_CONTEXT (fn)))
        !           159:     {
        !           160:       repo_vtable_used (DECL_CLASS_CONTEXT (fn));
        !           161:       return;
        !           162:     }
        !           163: 
        !           164:   pending_repo = perm_tree_cons (NULL_TREE, fn, pending_repo);
        !           165: }
        !           166: 
        !           167: /* Note that a particular typeinfo node has been used, and offer to
        !           168:    emit it.  */
        !           169: 
        !           170: void
        !           171: repo_tinfo_used (ti)
        !           172:      tree ti;
        !           173: {
        !           174: }
        !           175: 
        !           176: void
        !           177: repo_template_instantiated (t, extern_p)
        !           178:      tree t;
        !           179:      int extern_p;
        !           180: {
        !           181:   if (! extern_p)
        !           182:     {
        !           183:       tree id = repo_get_id (t);
        !           184:       if (id)
        !           185:        IDENTIFIER_REPO_CHOSEN (id) = 1;
        !           186:     }
        !           187: }
        !           188: 
        !           189: static char *
        !           190: save_string (s, len)
        !           191:      char *s;
        !           192:      int len;
        !           193: {
        !           194:   return obstack_copy0 (&temporary_obstack, s, len);
        !           195: }
        !           196: 
        !           197: static char *
        !           198: get_base_filename (filename)
        !           199:      char *filename;
        !           200: {
        !           201:   char *p = getenv ("COLLECT_GCC_OPTIONS");
        !           202:   char *output = 0;
        !           203:   int compiling = 0;
        !           204: 
        !           205:   if (p)
        !           206:     while (*p)
        !           207:       {
        !           208:        char *q = p;
        !           209:        while (*q && *q != ' ') q++;
        !           210:        if (*p == '-' && p[1] == 'o')
        !           211:          {
        !           212:            p += 2;
        !           213:            if (p == q)
        !           214:              {
        !           215:                p++; q++;
        !           216:                if (*q)
        !           217:                  while (*q && *q != ' ') q++;
        !           218:              }
        !           219: 
        !           220:            output = save_string (p, q - p);
        !           221:          }
        !           222:        else if (*p == '-' && p[1] == 'c')
        !           223:          compiling = 1;
        !           224:        if (*q) q++;
        !           225:        p = q;
        !           226:       }
        !           227: 
        !           228:   if (compiling && output)
        !           229:     return output;
        !           230: 
        !           231:   if (p && ! compiling)
        !           232:     {
        !           233:       warning ("-frepo must be used with -c");
        !           234:       flag_use_repository = 0;
        !           235:       return NULL;
        !           236:     }
        !           237: 
        !           238:   p = rindex (filename, '/');
        !           239:   if (p)
        !           240:     return p+1;
        !           241:   else
        !           242:     return filename;
        !           243: }        
        !           244: 
        !           245: static void
        !           246: open_repo_file (filename)
        !           247:      char *filename;
        !           248: {
        !           249:   register char *p, *q;
        !           250:   char *s = get_base_filename (filename);
        !           251: 
        !           252:   if (s == NULL)
        !           253:     return;
        !           254: 
        !           255:   p = rindex (s, '/');
        !           256:   if (! p)
        !           257:     p = s;
        !           258:   p = rindex (p, '.');
        !           259:   if (! p)
        !           260:     p = s + strlen (s);
        !           261: 
        !           262:   obstack_grow (&permanent_obstack, s, p - s);
        !           263:   repo_name = obstack_copy0 (&permanent_obstack, ".rpo", 4);
        !           264: 
        !           265:   repo_file = fopen (repo_name, "r");
        !           266: }
        !           267: 
        !           268: static char *
        !           269: afgets (stream)
        !           270:      FILE *stream;
        !           271: {
        !           272:   int c;
        !           273:   while ((c = getc (stream)) != EOF && c != '\n')
        !           274:     obstack_1grow (&temporary_obstack, c);
        !           275:   if (obstack_object_size (&temporary_obstack) == 0)
        !           276:     return NULL;
        !           277:   obstack_1grow (&temporary_obstack, '\0');
        !           278:   return obstack_finish (&temporary_obstack);
        !           279: }
        !           280: 
        !           281: void
        !           282: init_repo (filename)
        !           283:      char *filename;
        !           284: {
        !           285:   char *buf;
        !           286: 
        !           287:   if (! flag_use_repository)
        !           288:     return;
        !           289: 
        !           290:   open_repo_file (filename);
        !           291: 
        !           292:   if (repo_file == 0)
        !           293:     return;
        !           294: 
        !           295:   while (buf = afgets (repo_file))
        !           296:     {
        !           297:       switch (buf[0])
        !           298:        {
        !           299:        case 'A':
        !           300:        case 'D':
        !           301:        case 'M':
        !           302:          break;
        !           303:        case 'C':
        !           304:        case 'O':
        !           305:          {
        !           306:            tree id = get_identifier (buf + 2);
        !           307:            tree orig;
        !           308: 
        !           309:            if (buf[0] == 'C')
        !           310:              {
        !           311:                IDENTIFIER_REPO_CHOSEN (id) = 1;
        !           312:                orig = integer_one_node;
        !           313:              }
        !           314:            else
        !           315:              orig = NULL_TREE;
        !           316: 
        !           317:            original_repo = perm_tree_cons (orig, id, original_repo);
        !           318:          }
        !           319:          break;
        !           320:        default:
        !           321:          error ("mysterious repository information in %s", repo_name);
        !           322:        }
        !           323:       obstack_free (&temporary_obstack, buf);
        !           324:     }
        !           325: }
        !           326: 
        !           327: static void
        !           328: reopen_repo_file_for_write ()
        !           329: {
        !           330:   if (repo_file)
        !           331:     fclose (repo_file);
        !           332:   repo_file = fopen (repo_name, "w");
        !           333: 
        !           334:   if (repo_file == 0)
        !           335:     {
        !           336:       error ("can't create repository information file `%s'", repo_name);
        !           337:       flag_use_repository = 0;
        !           338:     }
        !           339: }
        !           340: 
        !           341: /* Emit any pending repos.  */
        !           342: 
        !           343: void
        !           344: finish_repo ()
        !           345: {
        !           346:   tree t;
        !           347:   char *p;
        !           348:   int repo_changed = 0;
        !           349: 
        !           350:   if (! flag_use_repository)
        !           351:     return;
        !           352: 
        !           353:   /* Do we have to write out a new info file?  */
        !           354: 
        !           355:   /* Are there any old templates that aren't used any longer or that are
        !           356:      newly chosen?  */
        !           357:   
        !           358:   for (t = original_repo; t; t = TREE_CHAIN (t))
        !           359:     {
        !           360:       if (! IDENTIFIER_REPO_USED (TREE_VALUE (t))
        !           361:          || (! TREE_PURPOSE (t) && IDENTIFIER_REPO_CHOSEN (TREE_VALUE (t))))
        !           362:        {
        !           363:          repo_changed = 1;
        !           364:          break;
        !           365:        }
        !           366:       IDENTIFIER_REPO_USED (TREE_VALUE (t)) = 0;
        !           367:     }
        !           368: 
        !           369:   /* Are there any templates that are newly used?  */
        !           370:   
        !           371:   if (! repo_changed)
        !           372:     for (t = pending_repo; t; t = TREE_CHAIN (t))
        !           373:       {
        !           374:        if (IDENTIFIER_REPO_USED (TREE_VALUE (t)))
        !           375:          {
        !           376:            repo_changed = 1;
        !           377:            break;
        !           378:          }
        !           379:       }
        !           380: 
        !           381:   if (! repo_changed || errorcount || sorrycount)
        !           382:     goto out;
        !           383: 
        !           384:   reopen_repo_file_for_write ();
        !           385: 
        !           386:   if (repo_file == 0)
        !           387:     goto out;
        !           388: 
        !           389:   fprintf (repo_file, "M %s\n", main_input_filename);
        !           390: 
        !           391:   p = getpwd ();
        !           392:   fprintf (repo_file, "D %s\n", p);
        !           393: 
        !           394:   p = getenv ("COLLECT_GCC_OPTIONS");
        !           395:   if (p != 0)
        !           396:     fprintf (repo_file, "A %s\n", p);
        !           397: 
        !           398:   for (t = pending_repo; t; t = TREE_CHAIN (t))
        !           399:     {
        !           400:       tree val = TREE_VALUE (t);
        !           401:       char type = IDENTIFIER_REPO_CHOSEN (val) ? 'C' : 'O';
        !           402: 
        !           403:       fprintf (repo_file, "%c %s\n", type, IDENTIFIER_POINTER (val));
        !           404:     }
        !           405: 
        !           406:  out:
        !           407:   if (repo_file)
        !           408:     fclose (repo_file);
        !           409: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.