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4 * Copyright (c) 1989 by Berkeley Softworks
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38 * @(#)targ.c 8.2 (Berkeley) 3/19/94
39 * $FreeBSD: src/usr.bin/make/targ.c,v 1.10 1999/09/11 13:08:02 hoek Exp $
40 * $DragonFly: src/usr.bin/make/targ.c,v 1.15 2004/12/16 23:24:09 okumoto Exp $
45 * Functions for maintaining the Lst allTargets. Target nodes are
46 * kept in two structures: a Lst, maintained by the list library, and a
47 * hash table, maintained by the hash library.
50 * Targ_Init Initialization procedure.
52 * Targ_End Cleanup the module
54 * Targ_NewGN Create a new GNode for the passed target
55 * (string). The node is *not* placed in the
56 * hash table, though all its fields are
59 * Targ_FindNode Find the node for a given target, creating
60 * and storing it if it doesn't exist and the
61 * flags are right (TARG_CREATE)
63 * Targ_FindList Given a list of names, find nodes for all
64 * of them. If a name doesn't exist and the
65 * TARG_NOCREATE flag was given, an error message
66 * is printed. Else, if a name doesn't exist,
67 * its node is created.
69 * Targ_Ignore Return TRUE if errors should be ignored when
70 * creating the given target.
72 * Targ_Silent Return TRUE if we should be silent when
73 * creating the given target.
75 * Targ_Precious Return TRUE if the target is precious and
76 * should not be removed if we are interrupted.
79 * Targ_PrintGraph Print out the entire graphm all variables
80 * and statistics for the directory cache. Should
81 * print something for suffixes, too, but...
90 static Lst allTargets; /* the list of all targets found so far */
91 static Lst allGNs; /* List of all the GNodes */
92 static Hash_Table targets; /* a hash table of same */
94 #define HTSIZE 191 /* initial size of hash table */
96 static int TargPrintOnlySrc(void *, void *);
97 static int TargPrintName(void *, void *);
98 static int TargPrintNode(void *, void *);
99 static void TargFreeGN(void *);
102 *-----------------------------------------------------------------------
104 * Initialize this module
110 * The allTargets list and the targets hash table are initialized
111 *-----------------------------------------------------------------------
117 allTargets = Lst_Init();
118 Hash_InitTable(&targets, HTSIZE);
122 *-----------------------------------------------------------------------
124 * Finalize this module
130 * All lists and gnodes are cleared
131 *-----------------------------------------------------------------------
137 Lst_Destroy(allTargets, NOFREE);
139 Lst_Destroy(allGNs, TargFreeGN);
140 Hash_DeleteTable(&targets);
144 *-----------------------------------------------------------------------
146 * Create and initialize a new graph node
149 * An initialized graph node with the name field filled with a copy
153 * The gnode is added to the list of all gnodes.
154 *-----------------------------------------------------------------------
157 Targ_NewGN(char *name)
161 gn = emalloc(sizeof(GNode));
162 gn->name = estrdup(name);
164 if (name[0] == '-' && name[1] == 'l') {
172 gn->childMade = FALSE;
174 gn->mtime = gn->cmtime = 0;
175 gn->iParents = Lst_Init();
176 gn->cohorts = Lst_Init();
177 gn->parents = Lst_Init();
178 gn->children = Lst_Init();
179 gn->successors = Lst_Init();
180 gn->preds = Lst_Init();
181 gn->context = Lst_Init();
182 gn->commands = Lst_Init();
187 Lst_AtEnd(allGNs, (void *)gn);
193 *-----------------------------------------------------------------------
202 *-----------------------------------------------------------------------
205 TargFreeGN(void *gnp)
212 Lst_Destroy(gn->iParents, NOFREE);
213 Lst_Destroy(gn->cohorts, NOFREE);
214 Lst_Destroy(gn->parents, NOFREE);
215 Lst_Destroy(gn->children, NOFREE);
216 Lst_Destroy(gn->successors, NOFREE);
217 Lst_Destroy(gn->preds, NOFREE);
218 Lst_Destroy(gn->context, NOFREE);
219 Lst_Destroy(gn->commands, NOFREE);
224 *-----------------------------------------------------------------------
226 * Find a node in the list using the given name for matching
229 * The node in the list if it was. If it wasn't, return NULL of
230 * flags was TARG_NOCREATE or the newly created and initialized node
231 * if it was TARG_CREATE
234 * Sometimes a node is created and added to the list
235 *-----------------------------------------------------------------------
238 Targ_FindNode(char *name, int flags)
240 GNode *gn; /* node in that element */
241 Hash_Entry *he; /* New or used hash entry for node */
242 Boolean isNew; /* Set TRUE if Hash_CreateEntry had to create */
243 /* an entry for the node */
245 if (flags & TARG_CREATE) {
246 he = Hash_CreateEntry(&targets, name, &isNew);
248 gn = Targ_NewGN(name);
249 Hash_SetValue (he, gn);
250 Lst_AtEnd(allTargets, gn);
253 he = Hash_FindEntry(&targets, name);
259 return (Hash_GetValue(he));
264 *-----------------------------------------------------------------------
266 * Make a complete list of GNodes from the given list of names
269 * A complete list of graph nodes corresponding to all instances of all
270 * the names in names.
273 * If flags is TARG_CREATE, nodes will be created for all names in
274 * names which do not yet have graph nodes. If flags is TARG_NOCREATE,
275 * an error message will be printed for each name which can't be found.
276 * -----------------------------------------------------------------------
279 Targ_FindList(Lst names, int flags)
281 Lst nodes; /* result list */
282 LstNode ln; /* name list element */
283 GNode *gn; /* node in tLn */
288 if (Lst_Open(names) == FAILURE) {
291 while ((ln = Lst_Next(names)) != NULL) {
292 name = Lst_Datum(ln);
293 gn = Targ_FindNode(name, flags);
296 * Note: Lst_AtEnd must come before the Lst_Concat so the nodes
297 * are added to the list in the order in which they were
298 * encountered in the makefile.
300 Lst_AtEnd(nodes, gn);
301 if (gn->type & OP_DOUBLEDEP) {
302 Lst_Concat(nodes, gn->cohorts, LST_CONCNEW);
304 } else if (flags == TARG_NOCREATE) {
305 Error("\"%s\" -- target unknown.", name);
313 *-----------------------------------------------------------------------
315 * Return true if should ignore errors when creating gn
318 * TRUE if should ignore errors
322 *-----------------------------------------------------------------------
325 Targ_Ignore(GNode *gn)
328 if (ignoreErrors || (gn->type & OP_IGNORE)) {
336 *-----------------------------------------------------------------------
338 * Return true if be silent when creating gn
341 * TRUE if should be silent
345 *-----------------------------------------------------------------------
348 Targ_Silent(GNode *gn)
351 if (beSilent || (gn->type & OP_SILENT)) {
359 *-----------------------------------------------------------------------
361 * See if the given target is precious
364 * TRUE if it is precious. FALSE otherwise
368 *-----------------------------------------------------------------------
371 Targ_Precious(GNode *gn)
374 if (allPrecious || (gn->type & (OP_PRECIOUS | OP_DOUBLEDEP))) {
381 /******************* DEBUG INFO PRINTING ****************/
383 static GNode *mainTarg; /* the main target, as set by Targ_SetMain */
386 *-----------------------------------------------------------------------
388 * Set our idea of the main target we'll be creating. Used for
395 * "mainTarg" is set to the main target's node.
396 *-----------------------------------------------------------------------
399 Targ_SetMain(GNode *gn)
406 TargPrintName(void *gnp, void *ppath)
408 GNode *gn = (GNode *) gnp;
410 printf("%s ", gn->name);
414 printf("[%s] ", gn->path);
416 if (gn == mainTarg) {
417 printf("(MAIN NAME) ");
421 return (ppath ? 0 : 0);
426 Targ_PrintCmd(void *cmd, void *dummy __unused)
429 printf("\t%s\n", (char *)cmd);
434 *-----------------------------------------------------------------------
436 * Format a modification time in some reasonable way and return it.
439 * The time reformatted.
442 * The time is placed in a static area, so it is overwritten
445 *-----------------------------------------------------------------------
448 Targ_FmtTime(time_t modtime)
451 static char buf[128];
453 parts = localtime(&modtime);
455 strftime(buf, sizeof buf, "%H:%M:%S %b %d, %Y", parts);
456 buf[sizeof(buf) - 1] = '\0';
461 *-----------------------------------------------------------------------
463 * Print out a type field giving only those attributes the user can
470 *-----------------------------------------------------------------------
473 Targ_PrintType(int type)
477 #define PRINTBIT(attr) case CONCAT(OP_,attr): printf("." #attr " "); break
478 #define PRINTDBIT(attr) case CONCAT(OP_,attr): DEBUGF(TARG, ("." #attr " ")); break
483 tbit = 1 << (ffs(type) - 1);
498 /*XXX: MEMBER is defined, so CONCAT(OP_,MEMBER) gives OP_"%" */
499 case OP_MEMBER: DEBUGF(TARG, (".MEMBER ")); break;
506 *-----------------------------------------------------------------------
508 * print the contents of a node
509 *-----------------------------------------------------------------------
512 TargPrintNode(void *gnp, void *passp)
515 int pass = *(int *)passp;
517 if (!OP_NOP(gn->type)) {
519 if (gn == mainTarg) {
520 printf("# *** MAIN TARGET ***\n");
524 printf("# %d unmade children\n", gn->unmade);
526 printf("# No unmade children\n");
528 if (!(gn->type & (OP_JOIN | OP_USE | OP_EXEC))) {
529 if (gn->mtime != 0) {
530 printf("# last modified %s: %s\n",
531 Targ_FmtTime(gn->mtime),
532 (gn->made == UNMADE ? "unmade" :
533 (gn->made == MADE ? "made" :
534 (gn->made == UPTODATE ? "up-to-date" :
535 "error when made"))));
536 } else if (gn->made != UNMADE) {
537 printf("# non-existent (maybe): %s\n",
538 (gn->made == MADE ? "made" :
539 (gn->made == UPTODATE ? "up-to-date" :
540 (gn->made == ERROR ? "error when made" :
543 printf("# unmade\n");
546 if (!Lst_IsEmpty (gn->iParents)) {
547 printf("# implicit parents: ");
548 Lst_ForEach(gn->iParents, TargPrintName, (void *)NULL);
552 if (!Lst_IsEmpty (gn->parents)) {
553 printf("# parents: ");
554 Lst_ForEach(gn->parents, TargPrintName, (void *)NULL);
558 printf("%-16s", gn->name);
559 switch (gn->type & OP_OPMASK) {
565 printf(":: "); break;
569 Targ_PrintType(gn->type);
570 Lst_ForEach(gn->children, TargPrintName, (void *)NULL);
572 Lst_ForEach(gn->commands, Targ_PrintCmd, (void *)NULL);
574 if (gn->type & OP_DOUBLEDEP) {
575 Lst_ForEach(gn->cohorts, TargPrintNode, &pass);
582 *-----------------------------------------------------------------------
583 * TargPrintOnlySrc --
584 * Print only those targets that are just a source.
590 * The name of each file is printed preceded by #\t
592 *-----------------------------------------------------------------------
595 TargPrintOnlySrc(void *gnp, void *dummy __unused)
599 if (OP_NOP(gn->type))
600 printf("#\t%s [%s]\n", gn->name, gn->path ? gn->path : gn->name);
606 *-----------------------------------------------------------------------
608 * Print the entire graph.
615 *-----------------------------------------------------------------------
618 Targ_PrintGraph(int pass)
621 printf("#*** Input graph:\n");
622 Lst_ForEach(allTargets, TargPrintNode, &pass);
624 printf("#\n# Files that are only sources:\n");
625 Lst_ForEach(allTargets, TargPrintOnlySrc, (void *)NULL);
626 printf("#*** Global Variables:\n");
627 Var_Dump(VAR_GLOBAL);
628 printf("#*** Command-line Variables:\n");
631 Dir_PrintDirectories();