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freebsd-skq/contrib/bmake/targ.c

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"Tag" the r237578 Portable BSD make 20-June-2012 import.
2012-06-25 22:22:39 +00:00
/* $NetBSD: targ.c,v 1.57 2012/06/12 19:21:51 joerg Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
* 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) 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: targ.c,v 1.57 2012/06/12 19:21:51 joerg Exp $";
#else
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)targ.c 8.2 (Berkeley) 3/19/94";
#else
__RCSID("$NetBSD: targ.c,v 1.57 2012/06/12 19:21:51 joerg Exp $");
#endif
#endif /* not lint */
#endif
/*-
* targ.c --
* Functions for maintaining the Lst allTargets. Target nodes are
* kept in two structures: a Lst, maintained by the list library, and a
* hash table, maintained by the hash library.
*
* Interface:
* Targ_Init Initialization procedure.
*
* Targ_End Cleanup the module
*
* Targ_List Return the list of all targets so far.
*
* Targ_NewGN Create a new GNode for the passed target
* (string). The node is *not* placed in the
* hash table, though all its fields are
* initialized.
*
* Targ_FindNode Find the node for a given target, creating
* and storing it if it doesn't exist and the
* flags are right (TARG_CREATE)
*
* Targ_FindList Given a list of names, find nodes for all
* of them. If a name doesn't exist and the
* TARG_NOCREATE flag was given, an error message
* is printed. Else, if a name doesn't exist,
* its node is created.
*
* Targ_Ignore Return TRUE if errors should be ignored when
* creating the given target.
*
* Targ_Silent Return TRUE if we should be silent when
* creating the given target.
*
* Targ_Precious Return TRUE if the target is precious and
* should not be removed if we are interrupted.
*
* Targ_Propagate Propagate information between related
* nodes. Should be called after the
* makefiles are parsed but before any
* action is taken.
*
* Debugging:
* Targ_PrintGraph Print out the entire graphm all variables
* and statistics for the directory cache. Should
* print something for suffixes, too, but...
*/
#include <stdio.h>
#include <time.h>
#include "make.h"
#include "hash.h"
#include "dir.h"
static Lst allTargets; /* the list of all targets found so far */
#ifdef CLEANUP
static Lst allGNs; /* List of all the GNodes */
#endif
static Hash_Table targets; /* a hash table of same */
#define HTSIZE 191 /* initial size of hash table */
static int TargPrintOnlySrc(void *, void *);
static int TargPrintName(void *, void *);
#ifdef CLEANUP
static void TargFreeGN(void *);
#endif
static int TargPropagateCohort(void *, void *);
static int TargPropagateNode(void *, void *);
/*-
*-----------------------------------------------------------------------
* Targ_Init --
* Initialize this module
*
* Results:
* None
*
* Side Effects:
* The allTargets list and the targets hash table are initialized
*-----------------------------------------------------------------------
*/
void
Targ_Init(void)
{
allTargets = Lst_Init(FALSE);
Hash_InitTable(&targets, HTSIZE);
}
/*-
*-----------------------------------------------------------------------
* Targ_End --
* Finalize this module
*
* Results:
* None
*
* Side Effects:
* All lists and gnodes are cleared
*-----------------------------------------------------------------------
*/
void
Targ_End(void)
{
#ifdef CLEANUP
Lst_Destroy(allTargets, NULL);
if (allGNs)
Lst_Destroy(allGNs, TargFreeGN);
Hash_DeleteTable(&targets);
#endif
}
/*-
*-----------------------------------------------------------------------
* Targ_List --
* Return the list of all targets
*
* Results:
* The list of all targets.
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Lst
Targ_List(void)
{
return allTargets;
}
/*-
*-----------------------------------------------------------------------
* Targ_NewGN --
* Create and initialize a new graph node
*
* Input:
* name the name to stick in the new node
*
* Results:
* An initialized graph node with the name field filled with a copy
* of the passed name
*
* Side Effects:
* The gnode is added to the list of all gnodes.
*-----------------------------------------------------------------------
*/
GNode *
Targ_NewGN(const char *name)
{
GNode *gn;
gn = bmake_malloc(sizeof(GNode));
gn->name = bmake_strdup(name);
gn->uname = NULL;
gn->path = NULL;
if (name[0] == '-' && name[1] == 'l') {
gn->type = OP_LIB;
} else {
gn->type = 0;
}
gn->unmade = 0;
gn->unmade_cohorts = 0;
gn->cohort_num[0] = 0;
gn->centurion = NULL;
gn->made = UNMADE;
gn->flags = 0;
gn->checked = 0;
gn->mtime = 0;
gn->cmgn = NULL;
gn->iParents = Lst_Init(FALSE);
gn->cohorts = Lst_Init(FALSE);
gn->parents = Lst_Init(FALSE);
gn->children = Lst_Init(FALSE);
gn->order_pred = Lst_Init(FALSE);
gn->order_succ = Lst_Init(FALSE);
Hash_InitTable(&gn->context, 0);
gn->commands = Lst_Init(FALSE);
gn->suffix = NULL;
gn->lineno = 0;
gn->fname = NULL;
#ifdef CLEANUP
if (allGNs == NULL)
allGNs = Lst_Init(FALSE);
Lst_AtEnd(allGNs, gn);
#endif
return (gn);
}
#ifdef CLEANUP
/*-
*-----------------------------------------------------------------------
* TargFreeGN --
* Destroy a GNode
*
* Results:
* None.
*
* Side Effects:
* None.
*-----------------------------------------------------------------------
*/
static void
TargFreeGN(void *gnp)
{
GNode *gn = (GNode *)gnp;
free(gn->name);
if (gn->uname)
free(gn->uname);
if (gn->path)
free(gn->path);
/* gn->fname points to name allocated when file was opened, don't free */
Lst_Destroy(gn->iParents, NULL);
Lst_Destroy(gn->cohorts, NULL);
Lst_Destroy(gn->parents, NULL);
Lst_Destroy(gn->children, NULL);
Lst_Destroy(gn->order_succ, NULL);
Lst_Destroy(gn->order_pred, NULL);
Hash_DeleteTable(&gn->context);
Lst_Destroy(gn->commands, NULL);
free(gn);
}
#endif
/*-
*-----------------------------------------------------------------------
* Targ_FindNode --
* Find a node in the list using the given name for matching
*
* Input:
* name the name to find
* flags flags governing events when target not
* found
*
* Results:
* The node in the list if it was. If it wasn't, return NULL of
* flags was TARG_NOCREATE or the newly created and initialized node
* if it was TARG_CREATE
*
* Side Effects:
* Sometimes a node is created and added to the list
*-----------------------------------------------------------------------
*/
GNode *
Targ_FindNode(const char *name, int flags)
{
GNode *gn; /* node in that element */
Hash_Entry *he = NULL; /* New or used hash entry for node */
Boolean isNew; /* Set TRUE if Hash_CreateEntry had to create */
/* an entry for the node */
if (!(flags & (TARG_CREATE | TARG_NOHASH))) {
he = Hash_FindEntry(&targets, name);
if (he == NULL)
return NULL;
return (GNode *)Hash_GetValue(he);
}
if (!(flags & TARG_NOHASH)) {
he = Hash_CreateEntry(&targets, name, &isNew);
if (!isNew)
return (GNode *)Hash_GetValue(he);
}
gn = Targ_NewGN(name);
if (!(flags & TARG_NOHASH))
Hash_SetValue(he, gn);
Var_Append(".ALLTARGETS", name, VAR_GLOBAL);
(void)Lst_AtEnd(allTargets, gn);
if (doing_depend)
gn->flags |= FROM_DEPEND;
return gn;
}
/*-
*-----------------------------------------------------------------------
* Targ_FindList --
* Make a complete list of GNodes from the given list of names
*
* Input:
* name list of names to find
* flags flags used if no node is found for a given name
*
* Results:
* A complete list of graph nodes corresponding to all instances of all
* the names in names.
*
* Side Effects:
* If flags is TARG_CREATE, nodes will be created for all names in
* names which do not yet have graph nodes. If flags is TARG_NOCREATE,
* an error message will be printed for each name which can't be found.
* -----------------------------------------------------------------------
*/
Lst
Targ_FindList(Lst names, int flags)
{
Lst nodes; /* result list */
LstNode ln; /* name list element */
GNode *gn; /* node in tLn */
char *name;
nodes = Lst_Init(FALSE);
if (Lst_Open(names) == FAILURE) {
return (nodes);
}
while ((ln = Lst_Next(names)) != NULL) {
name = (char *)Lst_Datum(ln);
gn = Targ_FindNode(name, flags);
if (gn != NULL) {
/*
* Note: Lst_AtEnd must come before the Lst_Concat so the nodes
* are added to the list in the order in which they were
* encountered in the makefile.
*/
(void)Lst_AtEnd(nodes, gn);
} else if (flags == TARG_NOCREATE) {
Error("\"%s\" -- target unknown.", name);
}
}
Lst_Close(names);
return (nodes);
}
/*-
*-----------------------------------------------------------------------
* Targ_Ignore --
* Return true if should ignore errors when creating gn
*
* Input:
* gn node to check for
*
* Results:
* TRUE if should ignore errors
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Targ_Ignore(GNode *gn)
{
if (ignoreErrors || gn->type & OP_IGNORE) {
return (TRUE);
} else {
return (FALSE);
}
}
/*-
*-----------------------------------------------------------------------
* Targ_Silent --
* Return true if be silent when creating gn
*
* Input:
* gn node to check for
*
* Results:
* TRUE if should be silent
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Targ_Silent(GNode *gn)
{
if (beSilent || gn->type & OP_SILENT) {
return (TRUE);
} else {
return (FALSE);
}
}
/*-
*-----------------------------------------------------------------------
* Targ_Precious --
* See if the given target is precious
*
* Input:
* gn the node to check
*
* Results:
* TRUE if it is precious. FALSE otherwise
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Targ_Precious(GNode *gn)
{
if (allPrecious || (gn->type & (OP_PRECIOUS|OP_DOUBLEDEP))) {
return (TRUE);
} else {
return (FALSE);
}
}
/******************* DEBUG INFO PRINTING ****************/
static GNode *mainTarg; /* the main target, as set by Targ_SetMain */
/*-
*-----------------------------------------------------------------------
* Targ_SetMain --
* Set our idea of the main target we'll be creating. Used for
* debugging output.
*
* Input:
* gn The main target we'll create
*
* Results:
* None.
*
* Side Effects:
* "mainTarg" is set to the main target's node.
*-----------------------------------------------------------------------
*/
void
Targ_SetMain(GNode *gn)
{
mainTarg = gn;
}
static int
TargPrintName(void *gnp, void *pflags MAKE_ATTR_UNUSED)
{
GNode *gn = (GNode *)gnp;
fprintf(debug_file, "%s%s ", gn->name, gn->cohort_num);
return 0;
}
int
Targ_PrintCmd(void *cmd, void *dummy)
{
fprintf(debug_file, "\t%s\n", (char *)cmd);
return (dummy ? 0 : 0);
}
/*-
*-----------------------------------------------------------------------
* Targ_FmtTime --
* Format a modification time in some reasonable way and return it.
*
* Results:
* The time reformatted.
*
* Side Effects:
* The time is placed in a static area, so it is overwritten
* with each call.
*
*-----------------------------------------------------------------------
*/
char *
Targ_FmtTime(time_t tm)
{
struct tm *parts;
static char buf[128];
parts = localtime(&tm);
(void)strftime(buf, sizeof buf, "%k:%M:%S %b %d, %Y", parts);
return(buf);
}
/*-
*-----------------------------------------------------------------------
* Targ_PrintType --
* Print out a type field giving only those attributes the user can
* set.
*
* Results:
*
* Side Effects:
*
*-----------------------------------------------------------------------
*/
void
Targ_PrintType(int type)
{
int tbit;
#define PRINTBIT(attr) case CONCAT(OP_,attr): fprintf(debug_file, "." #attr " "); break
#define PRINTDBIT(attr) case CONCAT(OP_,attr): if (DEBUG(TARG))fprintf(debug_file, "." #attr " "); break
type &= ~OP_OPMASK;
while (type) {
tbit = 1 << (ffs(type) - 1);
type &= ~tbit;
switch(tbit) {
PRINTBIT(OPTIONAL);
PRINTBIT(USE);
PRINTBIT(EXEC);
PRINTBIT(IGNORE);
PRINTBIT(PRECIOUS);
PRINTBIT(SILENT);
PRINTBIT(MAKE);
PRINTBIT(JOIN);
PRINTBIT(INVISIBLE);
PRINTBIT(NOTMAIN);
PRINTDBIT(LIB);
/*XXX: MEMBER is defined, so CONCAT(OP_,MEMBER) gives OP_"%" */
case OP_MEMBER: if (DEBUG(TARG))fprintf(debug_file, ".MEMBER "); break;
PRINTDBIT(ARCHV);
PRINTDBIT(MADE);
PRINTDBIT(PHONY);
}
}
}
static const char *
made_name(enum enum_made made)
{
switch (made) {
case UNMADE: return "unmade";
case DEFERRED: return "deferred";
case REQUESTED: return "requested";
case BEINGMADE: return "being made";
case MADE: return "made";
case UPTODATE: return "up-to-date";
case ERROR: return "error when made";
case ABORTED: return "aborted";
default: return "unknown enum_made value";
}
}
/*-
*-----------------------------------------------------------------------
* TargPrintNode --
* print the contents of a node
*-----------------------------------------------------------------------
*/
int
Targ_PrintNode(void *gnp, void *passp)
{
GNode *gn = (GNode *)gnp;
int pass = passp ? *(int *)passp : 0;
fprintf(debug_file, "# %s%s, flags %x, type %x, made %d\n",
gn->name, gn->cohort_num, gn->flags, gn->type, gn->made);
if (gn->flags == 0)
return 0;
if (!OP_NOP(gn->type)) {
fprintf(debug_file, "#\n");
if (gn == mainTarg) {
fprintf(debug_file, "# *** MAIN TARGET ***\n");
}
if (pass >= 2) {
if (gn->unmade) {
fprintf(debug_file, "# %d unmade children\n", gn->unmade);
} else {
fprintf(debug_file, "# No unmade children\n");
}
if (! (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC))) {
if (gn->mtime != 0) {
fprintf(debug_file, "# last modified %s: %s\n",
Targ_FmtTime(gn->mtime),
made_name(gn->made));
} else if (gn->made != UNMADE) {
fprintf(debug_file, "# non-existent (maybe): %s\n",
made_name(gn->made));
} else {
fprintf(debug_file, "# unmade\n");
}
}
if (!Lst_IsEmpty (gn->iParents)) {
fprintf(debug_file, "# implicit parents: ");
Lst_ForEach(gn->iParents, TargPrintName, NULL);
fprintf(debug_file, "\n");
}
} else {
if (gn->unmade)
fprintf(debug_file, "# %d unmade children\n", gn->unmade);
}
if (!Lst_IsEmpty (gn->parents)) {
fprintf(debug_file, "# parents: ");
Lst_ForEach(gn->parents, TargPrintName, NULL);
fprintf(debug_file, "\n");
}
if (!Lst_IsEmpty (gn->order_pred)) {
fprintf(debug_file, "# order_pred: ");
Lst_ForEach(gn->order_pred, TargPrintName, NULL);
fprintf(debug_file, "\n");
}
if (!Lst_IsEmpty (gn->order_succ)) {
fprintf(debug_file, "# order_succ: ");
Lst_ForEach(gn->order_succ, TargPrintName, NULL);
fprintf(debug_file, "\n");
}
fprintf(debug_file, "%-16s", gn->name);
switch (gn->type & OP_OPMASK) {
case OP_DEPENDS:
fprintf(debug_file, ": "); break;
case OP_FORCE:
fprintf(debug_file, "! "); break;
case OP_DOUBLEDEP:
fprintf(debug_file, ":: "); break;
}
Targ_PrintType(gn->type);
Lst_ForEach(gn->children, TargPrintName, NULL);
fprintf(debug_file, "\n");
Lst_ForEach(gn->commands, Targ_PrintCmd, NULL);
fprintf(debug_file, "\n\n");
if (gn->type & OP_DOUBLEDEP) {
Lst_ForEach(gn->cohorts, Targ_PrintNode, &pass);
}
}
return (0);
}
/*-
*-----------------------------------------------------------------------
* TargPrintOnlySrc --
* Print only those targets that are just a source.
*
* Results:
* 0.
*
* Side Effects:
* The name of each file is printed preceded by #\t
*
*-----------------------------------------------------------------------
*/
static int
TargPrintOnlySrc(void *gnp, void *dummy MAKE_ATTR_UNUSED)
{
GNode *gn = (GNode *)gnp;
if (!OP_NOP(gn->type))
return 0;
fprintf(debug_file, "#\t%s [%s] ",
gn->name, gn->path ? gn->path : gn->name);
Targ_PrintType(gn->type);
fprintf(debug_file, "\n");
return 0;
}
/*-
*-----------------------------------------------------------------------
* Targ_PrintGraph --
* print the entire graph. heh heh
*
* Input:
* pass Which pass this is. 1 => no processing
* 2 => processing done
*
* Results:
* none
*
* Side Effects:
* lots o' output
*-----------------------------------------------------------------------
*/
void
Targ_PrintGraph(int pass)
{
fprintf(debug_file, "#*** Input graph:\n");
Lst_ForEach(allTargets, Targ_PrintNode, &pass);
fprintf(debug_file, "\n\n");
fprintf(debug_file, "#\n# Files that are only sources:\n");
Lst_ForEach(allTargets, TargPrintOnlySrc, NULL);
fprintf(debug_file, "#*** Global Variables:\n");
Var_Dump(VAR_GLOBAL);
fprintf(debug_file, "#*** Command-line Variables:\n");
Var_Dump(VAR_CMD);
fprintf(debug_file, "\n");
Dir_PrintDirectories();
fprintf(debug_file, "\n");
Suff_PrintAll();
}
/*-
*-----------------------------------------------------------------------
* TargPropagateNode --
* Propagate information from a single node to related nodes if
* appropriate.
*
* Input:
* gnp The node that we are processing.
*
* Results:
* Always returns 0, for the benefit of Lst_ForEach().
*
* Side Effects:
* Information is propagated from this node to cohort or child
* nodes.
*
* If the node was defined with "::", then TargPropagateCohort()
* will be called for each cohort node.
*
* If the node has recursive predecessors, then
* TargPropagateRecpred() will be called for each recursive
* predecessor.
*-----------------------------------------------------------------------
*/
static int
TargPropagateNode(void *gnp, void *junk MAKE_ATTR_UNUSED)
{
GNode *gn = (GNode *)gnp;
if (gn->type & OP_DOUBLEDEP)
Lst_ForEach(gn->cohorts, TargPropagateCohort, gnp);
return (0);
}
/*-
*-----------------------------------------------------------------------
* TargPropagateCohort --
* Propagate some bits in the type mask from a node to
* a related cohort node.
*
* Input:
* cnp The node that we are processing.
* gnp Another node that has cnp as a cohort.
*
* Results:
* Always returns 0, for the benefit of Lst_ForEach().
*
* Side Effects:
* cnp's type bitmask is modified to incorporate some of the
* bits from gnp's type bitmask. (XXX need a better explanation.)
*-----------------------------------------------------------------------
*/
static int
TargPropagateCohort(void *cgnp, void *pgnp)
{
GNode *cgn = (GNode *)cgnp;
GNode *pgn = (GNode *)pgnp;
cgn->type |= pgn->type & ~OP_OPMASK;
return (0);
}
/*-
*-----------------------------------------------------------------------
* Targ_Propagate --
* Propagate information between related nodes. Should be called
* after the makefiles are parsed but before any action is taken.
*
* Results:
* none
*
* Side Effects:
* Information is propagated between related nodes throughout the
* graph.
*-----------------------------------------------------------------------
*/
void
Targ_Propagate(void)
{
Lst_ForEach(allTargets, TargPropagateNode, NULL);
}
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