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Diffstat (limited to 'dir.c')
| -rw-r--r-- | dir.c | 1805 |
1 files changed, 1805 insertions, 0 deletions
@@ -0,0 +1,1805 @@ +/* $NetBSD: dir.c,v 1.67 2013/03/05 22:01:43 christos Exp $ */ + +/* + * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Adam de Boor. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Copyright (c) 1988, 1989 by Adam de Boor + * Copyright (c) 1989 by Berkeley Softworks + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Adam de Boor. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef MAKE_NATIVE +static char rcsid[] = "$NetBSD: dir.c,v 1.67 2013/03/05 22:01:43 christos Exp $"; +#else +#include <sys/cdefs.h> +#ifndef lint +#if 0 +static char sccsid[] = "@(#)dir.c 8.2 (Berkeley) 1/2/94"; +#else +__RCSID("$NetBSD: dir.c,v 1.67 2013/03/05 22:01:43 christos Exp $"); +#endif +#endif /* not lint */ +#endif + +/*- + * dir.c -- + * Directory searching using wildcards and/or normal names... + * Used both for source wildcarding in the Makefile and for finding + * implicit sources. + * + * The interface for this module is: + * Dir_Init Initialize the module. + * + * Dir_InitCur Set the cur Path. + * + * Dir_InitDot Set the dot Path. + * + * Dir_End Cleanup the module. + * + * Dir_SetPATH Set ${.PATH} to reflect state of dirSearchPath. + * + * Dir_HasWildcards Returns TRUE if the name given it needs to + * be wildcard-expanded. + * + * Dir_Expand Given a pattern and a path, return a Lst of names + * which match the pattern on the search path. + * + * Dir_FindFile Searches for a file on a given search path. + * If it exists, the entire path is returned. + * Otherwise NULL is returned. + * + * Dir_FindHereOrAbove Search for a path in the current directory and + * then all the directories above it in turn until + * the path is found or we reach the root ("/"). + * + * Dir_MTime Return the modification time of a node. The file + * is searched for along the default search path. + * The path and mtime fields of the node are filled + * in. + * + * Dir_AddDir Add a directory to a search path. + * + * Dir_MakeFlags Given a search path and a command flag, create + * a string with each of the directories in the path + * preceded by the command flag and all of them + * separated by a space. + * + * Dir_Destroy Destroy an element of a search path. Frees up all + * things that can be freed for the element as long + * as the element is no longer referenced by any other + * search path. + * Dir_ClearPath Resets a search path to the empty list. + * + * For debugging: + * Dir_PrintDirectories Print stats about the directory cache. + */ + +#include <sys/types.h> +#include <sys/stat.h> + +#include <dirent.h> +#include <errno.h> +#include <stdio.h> + +#include "make.h" +#include "hash.h" +#include "dir.h" +#include "job.h" + +/* + * A search path consists of a Lst of Path structures. A Path structure + * has in it the name of the directory and a hash table of all the files + * in the directory. This is used to cut down on the number of system + * calls necessary to find implicit dependents and their like. Since + * these searches are made before any actions are taken, we need not + * worry about the directory changing due to creation commands. If this + * hampers the style of some makefiles, they must be changed. + * + * A list of all previously-read directories is kept in the + * openDirectories Lst. This list is checked first before a directory + * is opened. + * + * The need for the caching of whole directories is brought about by + * the multi-level transformation code in suff.c, which tends to search + * for far more files than regular make does. In the initial + * implementation, the amount of time spent performing "stat" calls was + * truly astronomical. The problem with hashing at the start is, + * of course, that pmake doesn't then detect changes to these directories + * during the course of the make. Three possibilities suggest themselves: + * + * 1) just use stat to test for a file's existence. As mentioned + * above, this is very inefficient due to the number of checks + * engendered by the multi-level transformation code. + * 2) use readdir() and company to search the directories, keeping + * them open between checks. I have tried this and while it + * didn't slow down the process too much, it could severely + * affect the amount of parallelism available as each directory + * open would take another file descriptor out of play for + * handling I/O for another job. Given that it is only recently + * that UNIX OS's have taken to allowing more than 20 or 32 + * file descriptors for a process, this doesn't seem acceptable + * to me. + * 3) record the mtime of the directory in the Path structure and + * verify the directory hasn't changed since the contents were + * hashed. This will catch the creation or deletion of files, + * but not the updating of files. However, since it is the + * creation and deletion that is the problem, this could be + * a good thing to do. Unfortunately, if the directory (say ".") + * were fairly large and changed fairly frequently, the constant + * rehashing could seriously degrade performance. It might be + * good in such cases to keep track of the number of rehashes + * and if the number goes over a (small) limit, resort to using + * stat in its place. + * + * An additional thing to consider is that pmake is used primarily + * to create C programs and until recently pcc-based compilers refused + * to allow you to specify where the resulting object file should be + * placed. This forced all objects to be created in the current + * directory. This isn't meant as a full excuse, just an explanation of + * some of the reasons for the caching used here. + * + * One more note: the location of a target's file is only performed + * on the downward traversal of the graph and then only for terminal + * nodes in the graph. This could be construed as wrong in some cases, + * but prevents inadvertent modification of files when the "installed" + * directory for a file is provided in the search path. + * + * Another data structure maintained by this module is an mtime + * cache used when the searching of cached directories fails to find + * a file. In the past, Dir_FindFile would simply perform an access() + * call in such a case to determine if the file could be found using + * just the name given. When this hit, however, all that was gained + * was the knowledge that the file existed. Given that an access() is + * essentially a stat() without the copyout() call, and that the same + * filesystem overhead would have to be incurred in Dir_MTime, it made + * sense to replace the access() with a stat() and record the mtime + * in a cache for when Dir_MTime was actually called. + */ + +Lst dirSearchPath; /* main search path */ + +static Lst openDirectories; /* the list of all open directories */ + +/* + * Variables for gathering statistics on the efficiency of the hashing + * mechanism. + */ +static int hits, /* Found in directory cache */ + misses, /* Sad, but not evil misses */ + nearmisses, /* Found under search path */ + bigmisses; /* Sought by itself */ + +static Path *dot; /* contents of current directory */ +static Path *cur; /* contents of current directory, if not dot */ +static Path *dotLast; /* a fake path entry indicating we need to + * look for . last */ +static Hash_Table mtimes; /* Results of doing a last-resort stat in + * Dir_FindFile -- if we have to go to the + * system to find the file, we might as well + * have its mtime on record. XXX: If this is done + * way early, there's a chance other rules will + * have already updated the file, in which case + * we'll update it again. Generally, there won't + * be two rules to update a single file, so this + * should be ok, but... */ + + +static int DirFindName(const void *, const void *); +static int DirMatchFiles(const char *, Path *, Lst); +static void DirExpandCurly(const char *, const char *, Lst, Lst); +static void DirExpandInt(const char *, Lst, Lst); +static int DirPrintWord(void *, void *); +static int DirPrintDir(void *, void *); +static char *DirLookup(Path *, const char *, const char *, Boolean); +static char *DirLookupSubdir(Path *, const char *); +static char *DirFindDot(Boolean, const char *, const char *); +static char *DirLookupAbs(Path *, const char *, const char *); + +/*- + *----------------------------------------------------------------------- + * Dir_Init -- + * initialize things for this module + * + * Results: + * none + * + * Side Effects: + * some directories may be opened. + *----------------------------------------------------------------------- + */ +void +Dir_Init(const char *cdname) +{ + dirSearchPath = Lst_Init(FALSE); + openDirectories = Lst_Init(FALSE); + Hash_InitTable(&mtimes, 0); + + Dir_InitCur(cdname); + + dotLast = bmake_malloc(sizeof(Path)); + dotLast->refCount = 1; + dotLast->hits = 0; + dotLast->name = bmake_strdup(".DOTLAST"); + Hash_InitTable(&dotLast->files, -1); +} + +/* + * Called by Dir_Init() and whenever .CURDIR is assigned to. + */ +void +Dir_InitCur(const char *cdname) +{ + Path *p; + + if (cdname != NULL) { + /* + * Our build directory is not the same as our source directory. + * Keep this one around too. + */ + if ((p = Dir_AddDir(NULL, cdname))) { + p->refCount += 1; + if (cur && cur != p) { + /* + * We've been here before, cleanup. + */ + cur->refCount -= 1; + Dir_Destroy(cur); + } + cur = p; + } + } +} + +/*- + *----------------------------------------------------------------------- + * Dir_InitDot -- + * (re)initialize "dot" (current/object directory) path hash + * + * Results: + * none + * + * Side Effects: + * some directories may be opened. + *----------------------------------------------------------------------- + */ +void +Dir_InitDot(void) +{ + if (dot != NULL) { + LstNode ln; + + /* Remove old entry from openDirectories, but do not destroy. */ + ln = Lst_Member(openDirectories, dot); + (void)Lst_Remove(openDirectories, ln); + } + + dot = Dir_AddDir(NULL, "."); + + if (dot == NULL) { + Error("Cannot open `.' (%s)", strerror(errno)); + exit(1); + } + + /* + * We always need to have dot around, so we increment its reference count + * to make sure it's not destroyed. + */ + dot->refCount += 1; + Dir_SetPATH(); /* initialize */ +} + +/*- + *----------------------------------------------------------------------- + * Dir_End -- + * cleanup things for this module + * + * Results: + * none + * + * Side Effects: + * none + *----------------------------------------------------------------------- + */ +void +Dir_End(void) +{ +#ifdef CLEANUP + if (cur) { + cur->refCount -= 1; + Dir_Destroy(cur); + } + dot->refCount -= 1; + dotLast->refCount -= 1; + Dir_Destroy(dotLast); + Dir_Destroy(dot); + Dir_ClearPath(dirSearchPath); + Lst_Destroy(dirSearchPath, NULL); + Dir_ClearPath(openDirectories); + Lst_Destroy(openDirectories, NULL); + Hash_DeleteTable(&mtimes); +#endif +} + +/* + * We want ${.PATH} to indicate the order in which we will actually + * search, so we rebuild it after any .PATH: target. + * This is the simplest way to deal with the effect of .DOTLAST. + */ +void +Dir_SetPATH(void) +{ + LstNode ln; /* a list element */ + Path *p; + Boolean hasLastDot = FALSE; /* true we should search dot last */ + + Var_Delete(".PATH", VAR_GLOBAL); + + if (Lst_Open(dirSearchPath) == SUCCESS) { + if ((ln = Lst_First(dirSearchPath)) != NULL) { + p = (Path *)Lst_Datum(ln); + if (p == dotLast) { + hasLastDot = TRUE; + Var_Append(".PATH", dotLast->name, VAR_GLOBAL); + } + } + + if (!hasLastDot) { + if (dot) + Var_Append(".PATH", dot->name, VAR_GLOBAL); + if (cur) + Var_Append(".PATH", cur->name, VAR_GLOBAL); + } + + while ((ln = Lst_Next(dirSearchPath)) != NULL) { + p = (Path *)Lst_Datum(ln); + if (p == dotLast) + continue; + if (p == dot && hasLastDot) + continue; + Var_Append(".PATH", p->name, VAR_GLOBAL); + } + + if (hasLastDot) { + if (dot) + Var_Append(".PATH", dot->name, VAR_GLOBAL); + if (cur) + Var_Append(".PATH", cur->name, VAR_GLOBAL); + } + Lst_Close(dirSearchPath); + } +} + +/*- + *----------------------------------------------------------------------- + * DirFindName -- + * See if the Path structure describes the same directory as the + * given one by comparing their names. Called from Dir_AddDir via + * Lst_Find when searching the list of open directories. + * + * Input: + * p Current name + * dname Desired name + * + * Results: + * 0 if it is the same. Non-zero otherwise + * + * Side Effects: + * None + *----------------------------------------------------------------------- + */ +static int +DirFindName(const void *p, const void *dname) +{ + return (strcmp(((const Path *)p)->name, dname)); +} + +/*- + *----------------------------------------------------------------------- + * Dir_HasWildcards -- + * see if the given name has any wildcard characters in it + * be careful not to expand unmatching brackets or braces. + * XXX: This code is not 100% correct. ([^]] fails etc.) + * I really don't think that make(1) should be expanding + * patterns, because then you have to set a mechanism for + * escaping the expansion! + * + * Input: + * name name to check + * + * Results: + * returns TRUE if the word should be expanded, FALSE otherwise + * + * Side Effects: + * none + *----------------------------------------------------------------------- + */ +Boolean +Dir_HasWildcards(char *name) +{ + char *cp; + int wild = 0, brace = 0, bracket = 0; + + for (cp = name; *cp; cp++) { + switch(*cp) { + case '{': + brace++; + wild = 1; + break; + case '}': + brace--; + break; + case '[': + bracket++; + wild = 1; + break; + case ']': + bracket--; + break; + case '?': + case '*': + wild = 1; + break; + default: + break; + } + } + return wild && bracket == 0 && brace == 0; +} + +/*- + *----------------------------------------------------------------------- + * DirMatchFiles -- + * Given a pattern and a Path structure, see if any files + * match the pattern and add their names to the 'expansions' list if + * any do. This is incomplete -- it doesn't take care of patterns like + * src / *src / *.c properly (just *.c on any of the directories), but it + * will do for now. + * + * Input: + * pattern Pattern to look for + * p Directory to search + * expansion Place to store the results + * + * Results: + * Always returns 0 + * + * Side Effects: + * File names are added to the expansions lst. The directory will be + * fully hashed when this is done. + *----------------------------------------------------------------------- + */ +static int +DirMatchFiles(const char *pattern, Path *p, Lst expansions) +{ + Hash_Search search; /* Index into the directory's table */ + Hash_Entry *entry; /* Current entry in the table */ + Boolean isDot; /* TRUE if the directory being searched is . */ + + isDot = (*p->name == '.' && p->name[1] == '\0'); + + for (entry = Hash_EnumFirst(&p->files, &search); + entry != NULL; + entry = Hash_EnumNext(&search)) + { + /* + * See if the file matches the given pattern. Note we follow the UNIX + * convention that dot files will only be found if the pattern + * begins with a dot (note also that as a side effect of the hashing + * scheme, .* won't match . or .. since they aren't hashed). + */ + if (Str_Match(entry->name, pattern) && + ((entry->name[0] != '.') || + (pattern[0] == '.'))) + { + (void)Lst_AtEnd(expansions, + (isDot ? bmake_strdup(entry->name) : + str_concat(p->name, entry->name, + STR_ADDSLASH))); + } + } + return (0); +} + +/*- + *----------------------------------------------------------------------- + * DirExpandCurly -- + * Expand curly braces like the C shell. Does this recursively. + * Note the special case: if after the piece of the curly brace is + * done there are no wildcard characters in the result, the result is + * placed on the list WITHOUT CHECKING FOR ITS EXISTENCE. + * + * Input: + * word Entire word to expand + * brace First curly brace in it + * path Search path to use + * expansions Place to store the expansions + * + * Results: + * None. + * + * Side Effects: + * The given list is filled with the expansions... + * + *----------------------------------------------------------------------- + */ +static void +DirExpandCurly(const char *word, const char *brace, Lst path, Lst expansions) +{ + const char *end; /* Character after the closing brace */ + const char *cp; /* Current position in brace clause */ + const char *start; /* Start of current piece of brace clause */ + int bracelevel; /* Number of braces we've seen. If we see a + * right brace when this is 0, we've hit the + * end of the clause. */ + char *file; /* Current expansion */ + int otherLen; /* The length of the other pieces of the + * expansion (chars before and after the + * clause in 'word') */ + char *cp2; /* Pointer for checking for wildcards in + * expansion before calling Dir_Expand */ + + start = brace+1; + + /* + * Find the end of the brace clause first, being wary of nested brace + * clauses. + */ + for (end = start, bracelevel = 0; *end != '\0'; end++) { + if (*end == '{') { + bracelevel++; + } else if ((*end == '}') && (bracelevel-- == 0)) { + break; + } + } + if (*end == '\0') { + Error("Unterminated {} clause \"%s\"", start); + return; + } else { + end++; + } + otherLen = brace - word + strlen(end); + + for (cp = start; cp < end; cp++) { + /* + * Find the end of this piece of the clause. + */ + bracelevel = 0; + while (*cp != ',') { + if (*cp == '{') { + bracelevel++; + } else if ((*cp == '}') && (bracelevel-- <= 0)) { + break; + } + cp++; + } + /* + * Allocate room for the combination and install the three pieces. + */ + file = bmake_malloc(otherLen + cp - start + 1); + if (brace != word) { + strncpy(file, word, brace-word); + } + if (cp != start) { + strncpy(&file[brace-word], start, cp-start); + } + strcpy(&file[(brace-word)+(cp-start)], end); + + /* + * See if the result has any wildcards in it. If we find one, call + * Dir_Expand right away, telling it to place the result on our list + * of expansions. + */ + for (cp2 = file; *cp2 != '\0'; cp2++) { + switch(*cp2) { + case '*': + case '?': + case '{': + case '[': + Dir_Expand(file, path, expansions); + goto next; + } + } + if (*cp2 == '\0') { + /* + * Hit the end w/o finding any wildcards, so stick the expansion + * on the end of the list. + */ + (void)Lst_AtEnd(expansions, file); + } else { + next: + free(file); + } + start = cp+1; + } +} + + +/*- + *----------------------------------------------------------------------- + * DirExpandInt -- + * Internal expand routine. Passes through the directories in the + * path one by one, calling DirMatchFiles for each. NOTE: This still + * doesn't handle patterns in directories... + * + * Input: + * word Word to expand + * path Path on which to look + * expansions Place to store the result + * + * Results: + * None. + * + * Side Effects: + * Things are added to the expansions list. + * + *----------------------------------------------------------------------- + */ +static void +DirExpandInt(const char *word, Lst path, Lst expansions) +{ + LstNode ln; /* Current node */ + Path *p; /* Directory in the node */ + + if (Lst_Open(path) == SUCCESS) { + while ((ln = Lst_Next(path)) != NULL) { + p = (Path *)Lst_Datum(ln); + DirMatchFiles(word, p, expansions); + } + Lst_Close(path); + } +} + +/*- + *----------------------------------------------------------------------- + * DirPrintWord -- + * Print a word in the list of expansions. Callback for Dir_Expand + * when DEBUG(DIR), via Lst_ForEach. + * + * Results: + * === 0 + * + * Side Effects: + * The passed word is printed, followed by a space. + * + *----------------------------------------------------------------------- + */ +static int +DirPrintWord(void *word, void *dummy) +{ + fprintf(debug_file, "%s ", (char *)word); + + return(dummy ? 0 : 0); +} + +/*- + *----------------------------------------------------------------------- + * Dir_Expand -- + * Expand the given word into a list of words by globbing it looking + * in the directories on the given search path. + * + * Input: + * word the word to expand + * path the list of directories in which to find the + * resulting files + * expansions the list on which to place the results + * + * Results: + * A list of words consisting of the files which exist along the search + * path matching the given pattern. + * + * Side Effects: + * Directories may be opened. Who knows? + *----------------------------------------------------------------------- + */ +void +Dir_Expand(const char *word, Lst path, Lst expansions) +{ + const char *cp; + + if (DEBUG(DIR)) { + fprintf(debug_file, "Expanding \"%s\"... ", word); + } + + cp = strchr(word, '{'); + if (cp) { + DirExpandCurly(word, cp, path, expansions); + } else { + cp = strchr(word, '/'); + if (cp) { + /* + * The thing has a directory component -- find the first wildcard + * in the string. + */ + for (cp = word; *cp; cp++) { + if (*cp == '?' || *cp == '[' || *cp == '*' || *cp == '{') { + break; + } + } + if (*cp == '{') { + /* + * This one will be fun. + */ + DirExpandCurly(word, cp, path, expansions); + return; + } else if (*cp != '\0') { + /* + * Back up to the start of the component + */ + char *dirpath; + + while (cp > word && *cp != '/') { + cp--; + } + if (cp != word) { + char sc; + /* + * If the glob isn't in the first component, try and find + * all the components up to the one with a wildcard. + */ + sc = cp[1]; + ((char *)UNCONST(cp))[1] = '\0'; + dirpath = Dir_FindFile(word, path); + ((char *)UNCONST(cp))[1] = sc; + /* + * dirpath is null if can't find the leading component + * XXX: Dir_FindFile won't find internal components. + * i.e. if the path contains ../Etc/Object and we're + * looking for Etc, it won't be found. Ah well. + * Probably not important. + */ + if (dirpath != NULL) { + char *dp = &dirpath[strlen(dirpath) - 1]; + if (*dp == '/') + *dp = '\0'; + path = Lst_Init(FALSE); + (void)Dir_AddDir(path, dirpath); + DirExpandInt(cp+1, path, expansions); + Lst_Destroy(path, NULL); + } + } else { + /* + * Start the search from the local directory + */ + DirExpandInt(word, path, expansions); + } + } else { + /* + * Return the file -- this should never happen. + */ + DirExpandInt(word, path, expansions); + } + } else { + /* + * First the files in dot + */ + DirMatchFiles(word, dot, expansions); + + /* + * Then the files in every other directory on the path. + */ + DirExpandInt(word, path, expansions); + } + } + if (DEBUG(DIR)) { + Lst_ForEach(expansions, DirPrintWord, NULL); + fprintf(debug_file, "\n"); + } +} + +/*- + *----------------------------------------------------------------------- + * DirLookup -- + * Find if the file with the given name exists in the given path. + * + * Results: + * The path to the file or NULL. This path is guaranteed to be in a + * different part of memory than name and so may be safely free'd. + * + * Side Effects: + * None. + *----------------------------------------------------------------------- + */ +static char * +DirLookup(Path *p, const char *name MAKE_ATTR_UNUSED, const char *cp, + Boolean hasSlash MAKE_ATTR_UNUSED) +{ + char *file; /* the current filename to check */ + + if (DEBUG(DIR)) { + fprintf(debug_file, " %s ...\n", p->name); + } + + if (Hash_FindEntry(&p->files, cp) == NULL) + return NULL; + + file = str_concat(p->name, cp, STR_ADDSLASH); + if (DEBUG(DIR)) { + fprintf(debug_file, " returning %s\n", file); + } + p->hits += 1; + hits += 1; + return file; +} + + +/*- + *----------------------------------------------------------------------- + * DirLookupSubdir -- + * Find if the file with the given name exists in the given path. + * + * Results: + * The path to the file or NULL. This path is guaranteed to be in a + * different part of memory than name and so may be safely free'd. + * + * Side Effects: + * If the file is found, it is added in the modification times hash + * table. + *----------------------------------------------------------------------- + */ +static char * +DirLookupSubdir(Path *p, const char *name) +{ + struct stat stb; /* Buffer for stat, if necessary */ + Hash_Entry *entry; /* Entry for mtimes table */ + char *file; /* the current filename to check */ + + if (p != dot) { + file = str_concat(p->name, name, STR_ADDSLASH); + } else { + /* + * Checking in dot -- DON'T put a leading ./ on the thing. + */ + file = bmake_strdup(name); + } + + if (DEBUG(DIR)) { + fprintf(debug_file, "checking %s ...\n", file); + } + + if (stat(file, &stb) == 0) { + if (stb.st_mtime == 0) + stb.st_mtime = 1; + /* + * Save the modification time so if it's needed, we don't have + * to fetch it again. + */ + if (DEBUG(DIR)) { + fprintf(debug_file, " Caching %s for %s\n", Targ_FmtTime(stb.st_mtime), + file); + } + entry = Hash_CreateEntry(&mtimes, file, NULL); + Hash_SetTimeValue(entry, stb.st_mtime); + nearmisses += 1; + return (file); + } + free(file); + return NULL; +} + +/*- + *----------------------------------------------------------------------- + * DirLookupAbs -- + * Find if the file with the given name exists in the given path. + * + * Results: + * The path to the file, the empty string or NULL. If the file is + * the empty string, the search should be terminated. + * This path is guaranteed to be in a different part of memory + * than name and so may be safely free'd. + * + * Side Effects: + * None. + *----------------------------------------------------------------------- + */ +static char * +DirLookupAbs(Path *p, const char *name, const char *cp) +{ + char *p1; /* pointer into p->name */ + const char *p2; /* pointer into name */ + + if (DEBUG(DIR)) { + fprintf(debug_file, " %s ...\n", p->name); + } + + /* + * If the file has a leading path component and that component + * exactly matches the entire name of the current search + * directory, we can attempt another cache lookup. And if we don't + * have a hit, we can safely assume the file does not exist at all. + */ + for (p1 = p->name, p2 = name; *p1 && *p1 == *p2; p1++, p2++) { + continue; + } + if (*p1 != '\0' || p2 != cp - 1) { + return NULL; + } + + if (Hash_FindEntry(&p->files, cp) == NULL) { + if (DEBUG(DIR)) { + fprintf(debug_file, " must be here but isn't -- returning\n"); + } + /* Return empty string: terminates search */ + return bmake_strdup(""); + } + + p->hits += 1; + hits += 1; + if (DEBUG(DIR)) { + fprintf(debug_file, " returning %s\n", name); + } + return (bmake_strdup(name)); +} + +/*- + *----------------------------------------------------------------------- + * DirFindDot -- + * Find the file given on "." or curdir + * + * Results: + * The path to the file or NULL. This path is guaranteed to be in a + * different part of memory than name and so may be safely free'd. + * + * Side Effects: + * Hit counts change + *----------------------------------------------------------------------- + */ +static char * +DirFindDot(Boolean hasSlash MAKE_ATTR_UNUSED, const char *name, const char *cp) +{ + + if (Hash_FindEntry(&dot->files, cp) != NULL) { + if (DEBUG(DIR)) { + fprintf(debug_file, " in '.'\n"); + } + hits += 1; + dot->hits += 1; + return (bmake_strdup(name)); + } + if (cur && + Hash_FindEntry(&cur->files, cp) != NULL) { + if (DEBUG(DIR)) { + fprintf(debug_file, " in ${.CURDIR} = %s\n", cur->name); + } + hits += 1; + cur->hits += 1; + return str_concat(cur->name, cp, STR_ADDSLASH); + } + + return NULL; +} + +/*- + *----------------------------------------------------------------------- + * Dir_FindFile -- + * Find the file with the given name along the given search path. + * + * Input: + * name the file to find + * path the Lst of directories to search + * + * Results: + * The path to the file or NULL. This path is guaranteed to be in a + * different part of memory than name and so may be safely free'd. + * + * Side Effects: + * If the file is found in a directory which is not on the path + * already (either 'name' is absolute or it is a relative path + * [ dir1/.../dirn/file ] which exists below one of the directories + * already on the search path), its directory is added to the end + * of the path on the assumption that there will be more files in + * that directory later on. Sometimes this is true. Sometimes not. + *----------------------------------------------------------------------- + */ +char * +Dir_FindFile(const char *name, Lst path) +{ + LstNode ln; /* a list element */ + char *file; /* the current filename to check */ + Path *p; /* current path member */ + const char *cp; /* Terminal name of file */ + Boolean hasLastDot = FALSE; /* true we should search dot last */ + Boolean hasSlash; /* true if 'name' contains a / */ + struct stat stb; /* Buffer for stat, if necessary */ + Hash_Entry *entry; /* Entry for mtimes table */ + const char *trailing_dot = "."; + + /* + * Find the final component of the name and note whether it has a + * slash in it (the name, I mean) + */ + cp = strrchr(name, '/'); + if (cp) { + hasSlash = TRUE; + cp += 1; + } else { + hasSlash = FALSE; + cp = name; + } + + if (DEBUG(DIR)) { + fprintf(debug_file, "Searching for %s ...", name); + } + + if (Lst_Open(path) == FAILURE) { + if (DEBUG(DIR)) { + fprintf(debug_file, "couldn't open path, file not found\n"); + } + misses += 1; + return NULL; + } + + if ((ln = Lst_First(path)) != NULL) { + p = (Path *)Lst_Datum(ln); + if (p == dotLast) { + hasLastDot = TRUE; + if (DEBUG(DIR)) + fprintf(debug_file, "[dot last]..."); + } + } + if (DEBUG(DIR)) { + fprintf(debug_file, "\n"); + } + + /* + * If there's no leading directory components or if the leading + * directory component is exactly `./', consult the cached contents + * of each of the directories on the search path. + */ + if (!hasSlash || (cp - name == 2 && *name == '.')) { + /* + * We look through all the directories on the path seeking one which + * contains the final component of the given name. If such a beast + * is found, we concatenate the directory name and the final + * component and return the resulting string. If we don't find any + * such thing, we go on to phase two... + * + * No matter what, we always look for the file in the current + * directory before anywhere else (unless we found the magic + * DOTLAST path, in which case we search it last) and we *do not* + * add the ./ to it if it exists. + * This is so there are no conflicts between what the user + * specifies (fish.c) and what pmake finds (./fish.c). + */ + if (!hasLastDot && + (file = DirFindDot(hasSlash, name, cp)) != NULL) { + Lst_Close(path); + return file; + } + + while ((ln = Lst_Next(path)) != NULL) { + p = (Path *)Lst_Datum(ln); + if (p == dotLast) + continue; + if ((file = DirLookup(p, name, cp, hasSlash)) != NULL) { + Lst_Close(path); + return file; + } + } + + if (hasLastDot && + (file = DirFindDot(hasSlash, name, cp)) != NULL) { + Lst_Close(path); + return file; + } + } + Lst_Close(path); + + /* + * We didn't find the file on any directory in the search path. + * If the name doesn't contain a slash, that means it doesn't exist. + * If it *does* contain a slash, however, there is still hope: it + * could be in a subdirectory of one of the members of the search + * path. (eg. /usr/include and sys/types.h. The above search would + * fail to turn up types.h in /usr/include, but it *is* in + * /usr/include/sys/types.h). + * [ This no longer applies: If we find such a beast, we assume there + * will be more (what else can we assume?) and add all but the last + * component of the resulting name onto the search path (at the + * end).] + * This phase is only performed if the file is *not* absolute. + */ + if (!hasSlash) { + if (DEBUG(DIR)) { + fprintf(debug_file, " failed.\n"); + } + misses += 1; + return NULL; + } + + if (*cp == '\0') { + /* we were given a trailing "/" */ + cp = trailing_dot; + } + + if (name[0] != '/') { + Boolean checkedDot = FALSE; + + if (DEBUG(DIR)) { + fprintf(debug_file, " Trying subdirectories...\n"); + } + + if (!hasLastDot) { + if (dot) { + checkedDot = TRUE; + if ((file = DirLookupSubdir(dot, name)) != NULL) + return file; + } + if (cur && (file = DirLookupSubdir(cur, name)) != NULL) + return file; + } + + (void)Lst_Open(path); + while ((ln = Lst_Next(path)) != NULL) { + p = (Path *)Lst_Datum(ln); + if (p == dotLast) + continue; + if (p == dot) { + if (checkedDot) + continue; + checkedDot = TRUE; + } + if ((file = DirLookupSubdir(p, name)) != NULL) { + Lst_Close(path); + return file; + } + } + Lst_Close(path); + + if (hasLastDot) { + if (dot && !checkedDot) { + checkedDot = TRUE; + if ((file = DirLookupSubdir(dot, name)) != NULL) + return file; + } + if (cur && (file = DirLookupSubdir(cur, name)) != NULL) + return file; + } + + if (checkedDot) { + /* + * Already checked by the given name, since . was in the path, + * so no point in proceeding... + */ + if (DEBUG(DIR)) { + fprintf(debug_file, " Checked . already, returning NULL\n"); + } + return NULL; + } + + } else { /* name[0] == '/' */ + + /* + * For absolute names, compare directory path prefix against the + * the directory path of each member on the search path for an exact + * match. If we have an exact match on any member of the search path, + * use the cached contents of that member to lookup the final file + * component. If that lookup fails we can safely assume that the + * file does not exist at all. This is signified by DirLookupAbs() + * returning an empty string. + */ + if (DEBUG(DIR)) { + fprintf(debug_file, " Trying exact path matches...\n"); + } + + if (!hasLastDot && cur && (file = DirLookupAbs(cur, name, cp)) != NULL) + return *file?file:NULL; + + (void)Lst_Open(path); + while ((ln = Lst_Next(path)) != NULL) { + p = (Path *)Lst_Datum(ln); + if (p == dotLast) + continue; + if ((file = DirLookupAbs(p, name, cp)) != NULL) { + Lst_Close(path); + return *file?file:NULL; + } + } + Lst_Close(path); + + if (hasLastDot && cur && (file = DirLookupAbs(cur, name, cp)) != NULL) + return *file?file:NULL; + } + + /* + * Didn't find it that way, either. Sigh. Phase 3. Add its directory + * onto the search path in any case, just in case, then look for the + * thing in the hash table. If we find it, grand. We return a new + * copy of the name. Otherwise we sadly return a NULL pointer. Sigh. + * Note that if the directory holding the file doesn't exist, this will + * do an extra search of the final directory on the path. Unless something + * weird happens, this search won't succeed and life will be groovy. + * + * Sigh. We cannot add the directory onto the search path because + * of this amusing case: + * $(INSTALLDIR)/$(FILE): $(FILE) + * + * $(FILE) exists in $(INSTALLDIR) but not in the current one. + * When searching for $(FILE), we will find it in $(INSTALLDIR) + * b/c we added it here. This is not good... + */ +#ifdef notdef + if (cp == traling_dot) { + cp = strrchr(name, '/'); + cp += 1; + } + cp[-1] = '\0'; + (void)Dir_AddDir(path, name); + cp[-1] = '/'; + + bigmisses += 1; + ln = Lst_Last(path); + if (ln == NULL) { + return NULL; + } else { + p = (Path *)Lst_Datum(ln); + } + + if (Hash_FindEntry(&p->files, cp) != NULL) { + return (bmake_strdup(name)); + } else { + return NULL; + } +#else /* !notdef */ + if (DEBUG(DIR)) { + fprintf(debug_file, " Looking for \"%s\" ...\n", name); + } + + bigmisses += 1; + entry = Hash_FindEntry(&mtimes, name); + if (entry != NULL) { + if (DEBUG(DIR)) { + fprintf(debug_file, " got it (in mtime cache)\n"); + } + return(bmake_strdup(name)); + } else if (stat(name, &stb) == 0) { + if (stb.st_mtime == 0) + stb.st_mtime = 1; + entry = Hash_CreateEntry(&mtimes, name, NULL); + if (DEBUG(DIR)) { + fprintf(debug_file, " Caching %s for %s\n", Targ_FmtTime(stb.st_mtime), + name); + } + Hash_SetTimeValue(entry, stb.st_mtime); + return (bmake_strdup(name)); + } else { + if (DEBUG(DIR)) { + fprintf(debug_file, " failed. Returning NULL\n"); + } + return NULL; + } +#endif /* notdef */ +} + + +/*- + *----------------------------------------------------------------------- + * Dir_FindHereOrAbove -- + * search for a path starting at a given directory and then working + * our way up towards the root. + * + * Input: + * here starting directory + * search_path the path we are looking for + * result the result of a successful search is placed here + * rlen the length of the result buffer + * (typically MAXPATHLEN + 1) + * + * Results: + * 0 on failure, 1 on success [in which case the found path is put + * in the result buffer]. + * + * Side Effects: + *----------------------------------------------------------------------- + */ +int +Dir_FindHereOrAbove(char *here, char *search_path, char *result, int rlen) { + + struct stat st; + char dirbase[MAXPATHLEN + 1], *db_end; + char try[MAXPATHLEN + 1], *try_end; + + /* copy out our starting point */ + snprintf(dirbase, sizeof(dirbase), "%s", here); + db_end = dirbase + strlen(dirbase); + + /* loop until we determine a result */ + while (1) { + + /* try and stat(2) it ... */ + snprintf(try, sizeof(try), "%s/%s", dirbase, search_path); + if (stat(try, &st) != -1) { + /* + * success! if we found a file, chop off + * the filename so we return a directory. + */ + if ((st.st_mode & S_IFMT) != S_IFDIR) { + try_end = try + strlen(try); + while (try_end > try && *try_end != '/') + try_end--; + if (try_end > try) + *try_end = 0; /* chop! */ + } + + /* + * done! + */ + snprintf(result, rlen, "%s", try); + return(1); + } + + /* + * nope, we didn't find it. if we used up dirbase we've + * reached the root and failed. + */ + if (db_end == dirbase) + break; /* failed! */ + + /* + * truncate dirbase from the end to move up a dir + */ + while (db_end > dirbase && *db_end != '/') + db_end--; + *db_end = 0; /* chop! */ + + } /* while (1) */ + + /* + * we failed... + */ + return(0); +} + +/*- + *----------------------------------------------------------------------- + * Dir_MTime -- + * Find the modification time of the file described by gn along the + * search path dirSearchPath. + * + * Input: + * gn the file whose modification time is desired + * + * Results: + * The modification time or 0 if it doesn't exist + * + * Side Effects: + * The modification time is placed in the node's mtime slot. + * If the node didn't have a path entry before, and Dir_FindFile + * found one for it, the full name is placed in the path slot. + *----------------------------------------------------------------------- + */ +int +Dir_MTime(GNode *gn, Boolean recheck) +{ + char *fullName; /* the full pathname of name */ + struct stat stb; /* buffer for finding the mod time */ + Hash_Entry *entry; + + if (gn->type & OP_ARCHV) { + return Arch_MTime(gn); + } else if (gn->type & OP_PHONY) { + gn->mtime = 0; + return 0; + } else if (gn->path == NULL) { + if (gn->type & OP_NOPATH) + fullName = NULL; + else { + fullName = Dir_FindFile(gn->name, Suff_FindPath(gn)); + if (fullName == NULL && gn->flags & FROM_DEPEND && + !Lst_IsEmpty(gn->iParents)) { + char *cp; + + cp = strrchr(gn->name, '/'); + if (cp) { + /* + * This is an implied source, and it may have moved, + * see if we can find it via the current .PATH + */ + cp++; + + fullName = Dir_FindFile(cp, Suff_FindPath(gn)); + if (fullName) { + /* + * Put the found file in gn->path + * so that we give that to the compiler. + */ + gn->path = bmake_strdup(fullName); + if (!Job_RunTarget(".STALE", gn->fname)) + fprintf(stdout, + "%s: %s, %d: ignoring stale %s for %s, " + "found %s\n", progname, gn->fname, gn->lineno, + makeDependfile, gn->name, fullName); + } + } + } + if (DEBUG(DIR)) + fprintf(debug_file, "Found '%s' as '%s'\n", + gn->name, fullName ? fullName : "(not found)" ); + } + } else { + fullName = gn->path; + } + + if (fullName == NULL) { + fullName = bmake_strdup(gn->name); + } + + if (!recheck) + entry = Hash_FindEntry(&mtimes, fullName); + else + entry = NULL; + if (entry != NULL) { + if (DEBUG(DIR)) { + fprintf(debug_file, "Using cached time %s for %s\n", + Targ_FmtTime(Hash_GetTimeValue(entry)), fullName); + } + stb.st_mtime = Hash_GetTimeValue(entry); + } else if (stat(fullName, &stb) < 0) { + if (gn->type & OP_MEMBER) { + if (fullName != gn->path) + free(fullName); + return Arch_MemMTime(gn); + } else { + stb.st_mtime = 0; + } + } else { + if (stb.st_mtime == 0) { + /* + * 0 handled specially by the code, if the time is really 0, + * return something else instead + */ + stb.st_mtime = 1; + } + entry = Hash_CreateEntry(&mtimes, fullName, NULL); + Hash_SetTimeValue(entry, stb.st_mtime); + } + + if (fullName && gn->path == NULL) { + gn->path = fullName; + } + + gn->mtime = stb.st_mtime; + return (gn->mtime); +} + +/*- + *----------------------------------------------------------------------- + * Dir_AddDir -- + * Add the given name to the end of the given path. The order of + * the arguments is backwards so ParseDoDependency can do a + * Lst_ForEach of its list of paths... + * + * Input: + * path the path to which the directory should be + * added + * name the name of the directory to add + * + * Results: + * none + * + * Side Effects: + * A structure is added to the list and the directory is + * read and hashed. + *----------------------------------------------------------------------- + */ +Path * +Dir_AddDir(Lst path, const char *name) +{ + LstNode ln = NULL; /* node in case Path structure is found */ + Path *p = NULL; /* pointer to new Path structure */ + DIR *d; /* for reading directory */ + struct dirent *dp; /* entry in directory */ + + if (strcmp(name, ".DOTLAST") == 0) { + ln = Lst_Find(path, name, DirFindName); + if (ln != NULL) + return (Path *)Lst_Datum(ln); + else { + dotLast->refCount += 1; + (void)Lst_AtFront(path, dotLast); + } + } + + if (path) + ln = Lst_Find(openDirectories, name, DirFindName); + if (ln != NULL) { + p = (Path *)Lst_Datum(ln); + if (path && Lst_Member(path, p) == NULL) { + p->refCount += 1; + (void)Lst_AtEnd(path, p); + } + } else { + if (DEBUG(DIR)) { + fprintf(debug_file, "Caching %s ...", name); + } + + if ((d = opendir(name)) != NULL) { + p = bmake_malloc(sizeof(Path)); + p->name = bmake_strdup(name); + p->hits = 0; + p->refCount = 1; + Hash_InitTable(&p->files, -1); + + while ((dp = readdir(d)) != NULL) { +#if defined(sun) && defined(d_ino) /* d_ino is a sunos4 #define for d_fileno */ + /* + * The sun directory library doesn't check for a 0 inode + * (0-inode slots just take up space), so we have to do + * it ourselves. + */ + if (dp->d_fileno == 0) { + continue; + } +#endif /* sun && d_ino */ + (void)Hash_CreateEntry(&p->files, dp->d_name, NULL); + } + (void)closedir(d); + (void)Lst_AtEnd(openDirectories, p); + if (path != NULL) + (void)Lst_AtEnd(path, p); + } + if (DEBUG(DIR)) { + fprintf(debug_file, "done\n"); + } + } + return p; +} + +/*- + *----------------------------------------------------------------------- + * Dir_CopyDir -- + * Callback function for duplicating a search path via Lst_Duplicate. + * Ups the reference count for the directory. + * + * Results: + * Returns the Path it was given. + * + * Side Effects: + * The refCount of the path is incremented. + * + *----------------------------------------------------------------------- + */ +void * +Dir_CopyDir(void *p) +{ + ((Path *)p)->refCount += 1; + + return (p); +} + +/*- + *----------------------------------------------------------------------- + * Dir_MakeFlags -- + * Make a string by taking all the directories in the given search + * path and preceding them by the given flag. Used by the suffix + * module to create variables for compilers based on suffix search + * paths. + * + * Input: + * flag flag which should precede each directory + * path list of directories + * + * Results: + * The string mentioned above. Note that there is no space between + * the given flag and each directory. The empty string is returned if + * Things don't go well. + * + * Side Effects: + * None + *----------------------------------------------------------------------- + */ +char * +Dir_MakeFlags(const char *flag, Lst path) +{ + char *str; /* the string which will be returned */ + char *s1, *s2;/* the current directory preceded by 'flag' */ + LstNode ln; /* the node of the current directory */ + Path *p; /* the structure describing the current directory */ + + str = bmake_strdup(""); + + if (Lst_Open(path) == SUCCESS) { + while ((ln = Lst_Next(path)) != NULL) { + p = (Path *)Lst_Datum(ln); + s2 = str_concat(flag, p->name, 0); + str = str_concat(s1 = str, s2, STR_ADDSPACE); + free(s1); + free(s2); + } + Lst_Close(path); + } + + return (str); +} + +/*- + *----------------------------------------------------------------------- + * Dir_Destroy -- + * Nuke a directory descriptor, if possible. Callback procedure + * for the suffixes module when destroying a search path. + * + * Input: + * pp The directory descriptor to nuke + * + * Results: + * None. + * + * Side Effects: + * If no other path references this directory (refCount == 0), + * the Path and all its data are freed. + * + *----------------------------------------------------------------------- + */ +void +Dir_Destroy(void *pp) +{ + Path *p = (Path *)pp; + p->refCount -= 1; + + if (p->refCount == 0) { + LstNode ln; + + ln = Lst_Member(openDirectories, p); + (void)Lst_Remove(openDirectories, ln); + + Hash_DeleteTable(&p->files); + free(p->name); + free(p); + } +} + +/*- + *----------------------------------------------------------------------- + * Dir_ClearPath -- + * Clear out all elements of the given search path. This is different + * from destroying the list, notice. + * + * Input: + * path Path to clear + * + * Results: + * None. + * + * Side Effects: + * The path is set to the empty list. + * + *----------------------------------------------------------------------- + */ +void +Dir_ClearPath(Lst path) +{ + Path *p; + while (!Lst_IsEmpty(path)) { + p = (Path *)Lst_DeQueue(path); + Dir_Destroy(p); + } +} + + +/*- + *----------------------------------------------------------------------- + * Dir_Concat -- + * Concatenate two paths, adding the second to the end of the first. + * Makes sure to avoid duplicates. + * + * Input: + * path1 Dest + * path2 Source + * + * Results: + * None + * + * Side Effects: + * Reference counts for added dirs are upped. + * + *----------------------------------------------------------------------- + */ +void +Dir_Concat(Lst path1, Lst path2) +{ + LstNode ln; + Path *p; + + for (ln = Lst_First(path2); ln != NULL; ln = Lst_Succ(ln)) { + p = (Path *)Lst_Datum(ln); + if (Lst_Member(path1, p) == NULL) { + p->refCount += 1; + (void)Lst_AtEnd(path1, p); + } + } +} + +/********** DEBUG INFO **********/ +void +Dir_PrintDirectories(void) +{ + LstNode ln; + Path *p; + + fprintf(debug_file, "#*** Directory Cache:\n"); + fprintf(debug_file, "# Stats: %d hits %d misses %d near misses %d losers (%d%%)\n", + hits, misses, nearmisses, bigmisses, + (hits+bigmisses+nearmisses ? + hits * 100 / (hits + bigmisses + nearmisses) : 0)); + fprintf(debug_file, "# %-20s referenced\thits\n", "directory"); + if (Lst_Open(openDirectories) == SUCCESS) { + while ((ln = Lst_Next(openDirectories)) != NULL) { + p = (Path *)Lst_Datum(ln); + fprintf(debug_file, "# %-20s %10d\t%4d\n", p->name, p->refCount, p->hits); + } + Lst_Close(openDirectories); + } +} + +static int +DirPrintDir(void *p, void *dummy) +{ + fprintf(debug_file, "%s ", ((Path *)p)->name); + return (dummy ? 0 : 0); +} + +void +Dir_PrintPath(Lst path) +{ + Lst_ForEach(path, DirPrintDir, NULL); +} |