2 * Copyright (c) 1988, 1989, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1989 by Berkeley Softworks
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)targ.c 8.2 (Berkeley) 3/19/94
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
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_NewGN Create a new GNode for the passed target (string).
53 * The node is *not* placed in the hash table, though all
54 * its fields are initialized.
56 * Targ_FindNode Find the node for a given target, creating and storing
57 * it if it doesn't exist and the flags are right
60 * Targ_FindList Given a list of names, find nodes for all of them. If a
61 * name doesn't exist and the TARG_NOCREATE flag was given,
62 * an error message is printed. Else, if a name doesn't
63 * exist, its node is created.
65 * Targ_Ignore Return TRUE if errors should be ignored when creating
68 * Targ_Silent Return TRUE if we should be silent when creating the
71 * Targ_Precious Return TRUE if the target is precious and should not
72 * be removed if we are interrupted.
75 * Targ_PrintGraph Print out the entire graphm all variables and statistics
76 * for the directory cache. Should print something for
77 * suffixes, too, but...
93 /* the list of all targets found so far */
94 static Lst allTargets = Lst_Initializer(allTargets);
96 static Hash_Table targets; /* a hash table of same */
98 #define HTSIZE 191 /* initial size of hash table */
102 * Initialize this module
105 * The allTargets list and the targets hash table are initialized
111 Hash_InitTable(&targets, HTSIZE);
116 * Create and initialize a new graph node
119 * An initialized graph node with the name field filled with a copy
123 * The gnode is added to the list of all gnodes.
126 Targ_NewGN(const char *name)
130 gn = emalloc(sizeof(GNode));
131 gn->name = estrdup(name);
133 if (name[0] == '-' && name[1] == 'l') {
141 gn->childMade = FALSE;
143 gn->mtime = gn->cmtime = 0;
144 Lst_Init(&gn->iParents);
145 Lst_Init(&gn->cohorts);
146 Lst_Init(&gn->parents);
147 Lst_Init(&gn->children);
148 Lst_Init(&gn->successors);
149 Lst_Init(&gn->preds);
150 Lst_Init(&gn->context);
151 Lst_Init(&gn->commands);
159 * Find a node in the list using the given name for matching
162 * The node in the list if it was. If it wasn't, return NULL of
163 * flags was TARG_NOCREATE or the newly created and initialized node
164 * if it was TARG_CREATE
167 * Sometimes a node is created and added to the list
170 Targ_FindNode(const char *name, int flags)
172 GNode *gn; /* node in that element */
173 Hash_Entry *he; /* New or used hash entry for node */
174 Boolean isNew; /* Set TRUE if Hash_CreateEntry had to create */
175 /* an entry for the node */
177 if (flags & TARG_CREATE) {
178 he = Hash_CreateEntry(&targets, name, &isNew);
180 gn = Targ_NewGN(name);
181 Hash_SetValue(he, gn);
182 Lst_AtEnd(&allTargets, gn);
185 he = Hash_FindEntry(&targets, name);
191 return (Hash_GetValue(he));
197 * Make a complete list of GNodes from the given list of names
200 * A complete list of graph nodes corresponding to all instances of all
201 * the names in names.
204 * If flags is TARG_CREATE, nodes will be created for all names in
205 * names which do not yet have graph nodes. If flags is TARG_NOCREATE,
206 * an error message will be printed for each name which can't be found.
209 Targ_FindList(Lst *nodes, Lst *names, int flags)
211 LstNode *ln; /* name list element */
212 GNode *gn; /* node in tLn */
215 for (ln = Lst_First(names); ln != NULL; ln = Lst_Succ(ln)) {
216 name = Lst_Datum(ln);
217 gn = Targ_FindNode(name, flags);
220 * Note: Lst_AtEnd must come before the Lst_Concat so
221 * the nodes are added to the list in the order in which
222 * they were encountered in the makefile.
224 Lst_AtEnd(nodes, gn);
225 if (gn->type & OP_DOUBLEDEP) {
226 Lst_Concat(nodes, &gn->cohorts, LST_CONCNEW);
229 } else if (flags == TARG_NOCREATE) {
230 Error("\"%s\" -- target unknown.", name);
237 * Return true if should ignore errors when creating gn
240 * TRUE if should ignore errors
243 Targ_Ignore(GNode *gn)
246 if (ignoreErrors || (gn->type & OP_IGNORE)) {
255 * Return true if be silent when creating gn
258 * TRUE if should be silent
261 Targ_Silent(GNode *gn)
264 if (beSilent || (gn->type & OP_SILENT)) {
273 * See if the given target is precious
276 * TRUE if it is precious. FALSE otherwise
279 Targ_Precious(GNode *gn)
282 if (allPrecious || (gn->type & (OP_PRECIOUS | OP_DOUBLEDEP))) {
289 static GNode *mainTarg; /* the main target, as set by Targ_SetMain */
293 * Set our idea of the main target we'll be creating. Used for
297 * "mainTarg" is set to the main target's node.
300 Targ_SetMain(GNode *gn)
308 * Format a modification time in some reasonable way and return it.
311 * The time reformatted.
314 * The time is placed in a static area, so it is overwritten
318 Targ_FmtTime(time_t modtime)
321 static char buf[128];
323 parts = localtime(&modtime);
325 strftime(buf, sizeof(buf), "%H:%M:%S %b %d, %Y", parts);
326 buf[sizeof(buf) - 1] = '\0';
332 * Print out a type field giving only those attributes the user can
336 Targ_PrintType(int type)
340 #define PRINTBIT(attr) \
341 case CONCAT(OP_,attr): \
342 printf("." #attr " "); \
345 #define PRINTDBIT(attr) \
346 case CONCAT(OP_,attr): \
347 DEBUGF(TARG, ("." #attr " ")); \
353 tbit = 1 << (ffs(type) - 1);
368 /*XXX: MEMBER is defined, so CONCAT(OP_,MEMBER) gives OP_"%" */
370 DEBUGF(TARG, (".MEMBER "));
379 * print the contents of a node
382 TargPrintNode(const GNode *gn, int pass)
386 if (!OP_NOP(gn->type)) {
388 if (gn == mainTarg) {
389 printf("# *** MAIN TARGET ***\n");
393 printf("# %d unmade children\n", gn->unmade);
395 printf("# No unmade children\n");
397 if (!(gn->type & (OP_JOIN | OP_USE | OP_EXEC))) {
398 if (gn->mtime != 0) {
399 printf("# last modified %s: %s\n",
400 Targ_FmtTime(gn->mtime),
401 gn->made == UNMADE ? "unmade" :
402 gn->made == MADE ? "made" :
403 gn->made == UPTODATE ? "up-to-date":
405 } else if (gn->made != UNMADE) {
406 printf("# non-existent (maybe): %s\n",
407 gn->made == MADE ? "made" :
408 gn->made == UPTODATE ? "up-to-date":
409 gn->made == ERROR?"error when made":
412 printf("# unmade\n");
415 if (!Lst_IsEmpty(&gn->iParents)) {
416 printf("# implicit parents: ");
417 LST_FOREACH(tln, &gn->iParents)
418 printf("%s ", ((const GNode *)
419 Lst_Datum(tln))->name);
423 if (!Lst_IsEmpty(&gn->parents)) {
424 printf("# parents: ");
425 LST_FOREACH(tln, &gn->parents)
426 printf("%s ", ((const GNode *)
427 Lst_Datum(tln))->name);
431 printf("%-16s", gn->name);
432 switch (gn->type & OP_OPMASK) {
445 Targ_PrintType(gn->type);
446 LST_FOREACH(tln, &gn->children)
447 printf("%s ", ((const GNode *)Lst_Datum(tln))->name);
449 LST_FOREACH(tln, &gn->commands)
450 printf("\t%s\n", (const char *)Lst_Datum(tln));
452 if (gn->type & OP_DOUBLEDEP) {
453 LST_FOREACH(tln, &gn->cohorts)
454 TargPrintNode((const GNode *)Lst_Datum(tln),
463 * Print the entire graph.
466 Targ_PrintGraph(int pass)
471 printf("#*** Input graph:\n");
472 LST_FOREACH(tln, &allTargets)
473 TargPrintNode((const GNode *)Lst_Datum(tln), pass);
476 printf("#\n# Files that are only sources:\n");
477 LST_FOREACH(tln, &allTargets) {
479 if (OP_NOP(gn->type))
480 printf("#\t%s [%s]\n", gn->name,
481 gn->path ? gn->path : gn->name);
484 printf("#*** Global Variables:\n");
485 Var_Dump(VAR_GLOBAL);
486 printf("#*** Command-line Variables:\n");
489 Dir_PrintDirectories();