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freebsd/usr.bin/make/targ.c
David E. O'Brien 4d1f4209a6 Update SCM ID method.
2002-04-13 10:17:18 +00:00

649 lines
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/*
* Copyright (c) 1988, 1989, 1990, 1993
* The Regents of the University of California. All rights reserved.
* 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.
*
* @(#)targ.c 8.2 (Berkeley) 3/19/94
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*-
* 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_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.
*
* 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 */
static Lst allGNs; /* List of all the GNodes */
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 *);
static int TargPrintNode(void *, void *);
static void TargFreeGN(void *);
/*-
*-----------------------------------------------------------------------
* Targ_Init --
* Initialize this module
*
* Results:
* None
*
* Side Effects:
* The allTargets list and the targets hash table are initialized
*-----------------------------------------------------------------------
*/
void
Targ_Init ()
{
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 ()
{
Lst_Destroy(allTargets, NOFREE);
if (allGNs)
Lst_Destroy(allGNs, TargFreeGN);
Hash_DeleteTable(&targets);
}
/*-
*-----------------------------------------------------------------------
* Targ_NewGN --
* Create and initialize a new graph 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 (name)
char *name; /* the name to stick in the new node */
{
GNode *gn;
gn = (GNode *) emalloc (sizeof (GNode));
gn->name = estrdup (name);
gn->path = (char *) 0;
if (name[0] == '-' && name[1] == 'l') {
gn->type = OP_LIB;
} else {
gn->type = 0;
}
gn->unmade = 0;
gn->make = FALSE;
gn->made = UNMADE;
gn->childMade = FALSE;
gn->order = 0;
gn->mtime = gn->cmtime = 0;
gn->iParents = Lst_Init (FALSE);
gn->cohorts = Lst_Init (FALSE);
gn->parents = Lst_Init (FALSE);
gn->children = Lst_Init (FALSE);
gn->successors = Lst_Init (FALSE);
gn->preds = Lst_Init (FALSE);
gn->context = Lst_Init (FALSE);
gn->commands = Lst_Init (FALSE);
gn->suffix = NULL;
if (allGNs == NULL)
allGNs = Lst_Init(FALSE);
Lst_AtEnd(allGNs, (void *) gn);
return (gn);
}
/*-
*-----------------------------------------------------------------------
* TargFreeGN --
* Destroy a GNode
*
* Results:
* None.
*
* Side Effects:
* None.
*-----------------------------------------------------------------------
*/
static void
TargFreeGN (gnp)
void * gnp;
{
GNode *gn = (GNode *) gnp;
free(gn->name);
efree(gn->path);
Lst_Destroy(gn->iParents, NOFREE);
Lst_Destroy(gn->cohorts, NOFREE);
Lst_Destroy(gn->parents, NOFREE);
Lst_Destroy(gn->children, NOFREE);
Lst_Destroy(gn->successors, NOFREE);
Lst_Destroy(gn->preds, NOFREE);
Lst_Destroy(gn->context, NOFREE);
Lst_Destroy(gn->commands, NOFREE);
free(gn);
}
/*-
*-----------------------------------------------------------------------
* Targ_FindNode --
* Find a node in the list using the given name for matching
*
* 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 (name, flags)
char *name; /* the name to find */
int flags; /* flags governing events when target not
* found */
{
GNode *gn; /* node in that element */
Hash_Entry *he; /* 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) {
he = Hash_CreateEntry (&targets, name, &isNew);
if (isNew) {
gn = Targ_NewGN (name);
Hash_SetValue (he, gn);
(void) Lst_AtEnd (allTargets, (void *)gn);
}
} else {
he = Hash_FindEntry (&targets, name);
}
if (he == (Hash_Entry *) NULL) {
return (NULL);
} else {
return ((GNode *) Hash_GetValue (he));
}
}
/*-
*-----------------------------------------------------------------------
* Targ_FindList --
* Make a complete list of GNodes from the given list of names
*
* 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 (names, flags)
Lst names; /* list of names to find */
int flags; /* flags used if no node is found for a given
* name */
{
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, (void *)gn);
if (gn->type & OP_DOUBLEDEP) {
(void)Lst_Concat (nodes, gn->cohorts, LST_CONCNEW);
}
} 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
*
* Results:
* TRUE if should ignore errors
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Targ_Ignore (gn)
GNode *gn; /* node to check for */
{
if (ignoreErrors || gn->type & OP_IGNORE) {
return (TRUE);
} else {
return (FALSE);
}
}
/*-
*-----------------------------------------------------------------------
* Targ_Silent --
* Return true if be silent when creating gn
*
* Results:
* TRUE if should be silent
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Targ_Silent (gn)
GNode *gn; /* node to check for */
{
if (beSilent || gn->type & OP_SILENT) {
return (TRUE);
} else {
return (FALSE);
}
}
/*-
*-----------------------------------------------------------------------
* Targ_Precious --
* See if the given target is precious
*
* Results:
* TRUE if it is precious. FALSE otherwise
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Targ_Precious (gn)
GNode *gn; /* the node to check */
{
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.
*
* Results:
* None.
*
* Side Effects:
* "mainTarg" is set to the main target's node.
*-----------------------------------------------------------------------
*/
void
Targ_SetMain (gn)
GNode *gn; /* The main target we'll create */
{
mainTarg = gn;
}
static int
TargPrintName (gnp, ppath)
void * gnp;
void * ppath;
{
GNode *gn = (GNode *) gnp;
printf ("%s ", gn->name);
#ifdef notdef
if (ppath) {
if (gn->path) {
printf ("[%s] ", gn->path);
}
if (gn == mainTarg) {
printf ("(MAIN NAME) ");
}
}
#endif /* notdef */
return (ppath ? 0 : 0);
}
int
Targ_PrintCmd (cmd, dummy)
void * cmd;
void * dummy;
{
printf ("\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)
time_t time;
{
struct tm *parts;
static char buf[128];
parts = localtime(&time);
strftime(buf, sizeof buf, "%k:%M:%S %b %d, %Y", parts);
buf[sizeof(buf) - 1] = '\0';
return(buf);
}
/*-
*-----------------------------------------------------------------------
* Targ_PrintType --
* Print out a type field giving only those attributes the user can
* set.
*
* Results:
*
* Side Effects:
*
*-----------------------------------------------------------------------
*/
void
Targ_PrintType (type)
int type;
{
int tbit;
#define PRINTBIT(attr) case CONCAT(OP_,attr): printf("." #attr " "); break
#define PRINTDBIT(attr) case CONCAT(OP_,attr): if (DEBUG(TARG)) printf("." #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)) printf(".MEMBER "); break;
PRINTDBIT(ARCHV);
}
}
}
/*-
*-----------------------------------------------------------------------
* TargPrintNode --
* print the contents of a node
*-----------------------------------------------------------------------
*/
static int
TargPrintNode (gnp, passp)
void * gnp;
void * passp;
{
GNode *gn = (GNode *) gnp;
int pass = *(int *) passp;
if (!OP_NOP(gn->type)) {
printf("#\n");
if (gn == mainTarg) {
printf("# *** MAIN TARGET ***\n");
}
if (pass == 2) {
if (gn->unmade) {
printf("# %d unmade children\n", gn->unmade);
} else {
printf("# No unmade children\n");
}
if (! (gn->type & (OP_JOIN|OP_USE|OP_EXEC))) {
if (gn->mtime != 0) {
printf("# last modified %s: %s\n",
Targ_FmtTime(gn->mtime),
(gn->made == UNMADE ? "unmade" :
(gn->made == MADE ? "made" :
(gn->made == UPTODATE ? "up-to-date" :
"error when made"))));
} else if (gn->made != UNMADE) {
printf("# non-existent (maybe): %s\n",
(gn->made == MADE ? "made" :
(gn->made == UPTODATE ? "up-to-date" :
(gn->made == ERROR ? "error when made" :
"aborted"))));
} else {
printf("# unmade\n");
}
}
if (!Lst_IsEmpty (gn->iParents)) {
printf("# implicit parents: ");
Lst_ForEach (gn->iParents, TargPrintName, (void *)0);
fputc ('\n', stdout);
}
}
if (!Lst_IsEmpty (gn->parents)) {
printf("# parents: ");
Lst_ForEach (gn->parents, TargPrintName, (void *)0);
fputc ('\n', stdout);
}
printf("%-16s", gn->name);
switch (gn->type & OP_OPMASK) {
case OP_DEPENDS:
printf(": "); break;
case OP_FORCE:
printf("! "); break;
case OP_DOUBLEDEP:
printf(":: "); break;
}
Targ_PrintType (gn->type);
Lst_ForEach (gn->children, TargPrintName, (void *)0);
fputc ('\n', stdout);
Lst_ForEach (gn->commands, Targ_PrintCmd, (void *)0);
printf("\n\n");
if (gn->type & OP_DOUBLEDEP) {
Lst_ForEach (gn->cohorts, TargPrintNode, (void *)&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(gnp, dummy)
void * gnp;
void * dummy;
{
GNode *gn = (GNode *) gnp;
if (OP_NOP(gn->type))
printf("#\t%s [%s]\n", gn->name, gn->path ? gn->path : gn->name);
return (dummy ? 0 : 0);
}
/*-
*-----------------------------------------------------------------------
* Targ_PrintGraph --
* print the entire graph. heh heh
*
* Results:
* none
*
* Side Effects:
* lots o' output
*-----------------------------------------------------------------------
*/
void
Targ_PrintGraph (pass)
int pass; /* Which pass this is. 1 => no processing
* 2 => processing done */
{
printf("#*** Input graph:\n");
Lst_ForEach (allTargets, TargPrintNode, (void *)&pass);
printf("\n\n");
printf("#\n# Files that are only sources:\n");
Lst_ForEach (allTargets, TargPrintOnlySrc, (void *) 0);
printf("#*** Global Variables:\n");
Var_Dump (VAR_GLOBAL);
printf("#*** Command-line Variables:\n");
Var_Dump (VAR_CMD);
printf("\n");
Dir_PrintDirectories();
printf("\n");
Suff_PrintAll();
}
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