e2eeea75eb
o allow env var MAKE_OBJDIR_CHECK_WRITABLE=no to skip writable checks in InitObjdir. Explicit .OBJDIR target always allows read-only directory. o More code cleanup and refactoring. o More unit tests MFC after: 1 week
600 lines
16 KiB
C
600 lines
16 KiB
C
/* $NetBSD: targ.c,v 1.135 2020/11/16 22:28:44 rillig Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Maintaining the targets and sources, which are both implemented as GNode.
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*
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* Interface:
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* Targ_Init Initialize the module.
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*
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* Targ_End Clean up the module.
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*
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* Targ_List Return the list of all targets so far.
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*
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* GNode_New Create a new GNode for the passed target
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* (string). The node is *not* placed in the
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* hash table, though all its fields are
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* initialized.
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*
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* Targ_FindNode Find the node, or return NULL.
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*
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* Targ_GetNode Find the node, or create it.
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*
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* Targ_NewInternalNode
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* Create an internal node.
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*
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* Targ_FindList Given a list of names, find nodes for all
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* of them, creating them as necessary.
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*
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* Targ_Ignore Return TRUE if errors should be ignored when
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* creating the given target.
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*
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* Targ_Silent Return TRUE if we should be silent when
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* creating the given target.
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*
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* Targ_Precious Return TRUE if the target is precious and
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* should not be removed if we are interrupted.
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*
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* Targ_Propagate Propagate information between related nodes.
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* Should be called after the makefiles are parsed
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* but before any action is taken.
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*
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* Debugging:
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* Targ_PrintGraph
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* Print out the entire graphm all variables and
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* statistics for the directory cache. Should print
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* something for suffixes, too, but...
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*/
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#include <time.h>
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#include "make.h"
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#include "dir.h"
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/* "@(#)targ.c 8.2 (Berkeley) 3/19/94" */
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MAKE_RCSID("$NetBSD: targ.c,v 1.135 2020/11/16 22:28:44 rillig Exp $");
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/* All target nodes found so far, but not the source nodes. */
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static GNodeList *allTargets;
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static HashTable allTargetsByName;
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#ifdef CLEANUP
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static GNodeList *allNodes;
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static void GNode_Free(void *);
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#endif
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void
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Targ_Init(void)
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{
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allTargets = Lst_New();
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HashTable_Init(&allTargetsByName);
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#ifdef CLEANUP
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allNodes = Lst_New();
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#endif
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}
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void
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Targ_End(void)
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{
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Targ_Stats();
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#ifdef CLEANUP
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Lst_Free(allTargets);
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HashTable_Done(&allTargetsByName);
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Lst_Destroy(allNodes, GNode_Free);
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#endif
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}
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void
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Targ_Stats(void)
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{
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HashTable_DebugStats(&allTargetsByName, "targets");
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}
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/*
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* Return the list of all targets, which are all nodes that appear on the
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* left-hand side of a dependency declaration such as "target: source".
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* The returned list does not contain pure sources.
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*/
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GNodeList *
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Targ_List(void)
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{
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return allTargets;
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}
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/* Create a new graph node, but don't register it anywhere.
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*
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* Graph nodes that appear on the left-hand side of a dependency line such
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* as "target: source" are called targets. XXX: In some cases (like the
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* .ALLTARGETS variable), all nodes are called targets as well, even if they
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* never appear on the left-hand side. This is a mistake.
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*
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* Typical names for graph nodes are:
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* "src.c" (an ordinary file)
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* "clean" (a .PHONY target)
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* ".END" (a special hook target)
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* "-lm" (a library)
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* "libc.a(isspace.o)" (an archive member)
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*/
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GNode *
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GNode_New(const char *name)
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{
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GNode *gn;
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gn = bmake_malloc(sizeof *gn);
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gn->name = bmake_strdup(name);
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gn->uname = NULL;
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gn->path = NULL;
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gn->type = name[0] == '-' && name[1] == 'l' ? OP_LIB : 0;
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gn->flags = 0;
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gn->made = UNMADE;
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gn->unmade = 0;
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gn->mtime = 0;
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gn->youngestChild = NULL;
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gn->implicitParents = Lst_New();
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gn->parents = Lst_New();
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gn->children = Lst_New();
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gn->order_pred = Lst_New();
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gn->order_succ = Lst_New();
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gn->cohorts = Lst_New();
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gn->cohort_num[0] = '\0';
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gn->unmade_cohorts = 0;
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gn->centurion = NULL;
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gn->checked_seqno = 0;
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HashTable_Init(&gn->context);
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gn->commands = Lst_New();
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gn->suffix = NULL;
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gn->fname = NULL;
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gn->lineno = 0;
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#ifdef CLEANUP
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Lst_Append(allNodes, gn);
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#endif
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return gn;
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}
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#ifdef CLEANUP
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static void
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GNode_Free(void *gnp)
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{
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GNode *gn = gnp;
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free(gn->name);
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free(gn->uname);
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free(gn->path);
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/* gn->youngestChild is not owned by this node. */
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Lst_Free(gn->implicitParents); /* ... but not the nodes themselves, */
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Lst_Free(gn->parents); /* as they are not owned by this node. */
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Lst_Free(gn->children); /* likewise */
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Lst_Free(gn->order_pred); /* likewise */
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Lst_Free(gn->order_succ); /* likewise */
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Lst_Free(gn->cohorts); /* likewise */
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HashTable_Done(&gn->context); /* ... but not the variables themselves,
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* even though they are owned by this node.
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* XXX: they should probably be freed. */
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Lst_Free(gn->commands); /* ... but not the commands themselves,
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* as they may be shared with other nodes. */
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/* gn->suffix is not owned by this node. */
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/* XXX: gn->suffix should be unreferenced here. This requires a thorough
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* check that the reference counting is done correctly in all places,
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* otherwise a suffix might be freed too early. */
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free(gn);
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}
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#endif
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/* Get the existing global node, or return NULL. */
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GNode *
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Targ_FindNode(const char *name)
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{
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return HashTable_FindValue(&allTargetsByName, name);
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}
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/* Get the existing global node, or create it. */
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GNode *
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Targ_GetNode(const char *name)
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{
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Boolean isNew;
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HashEntry *he = HashTable_CreateEntry(&allTargetsByName, name, &isNew);
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if (!isNew)
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return HashEntry_Get(he);
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{
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GNode *gn = Targ_NewInternalNode(name);
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HashEntry_Set(he, gn);
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return gn;
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}
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}
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/*
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* Create a node, register it in .ALLTARGETS but don't store it in the
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* table of global nodes. This means it cannot be found by name.
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*
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* This is used for internal nodes, such as cohorts or .WAIT nodes.
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*/
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GNode *
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Targ_NewInternalNode(const char *name)
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{
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GNode *gn = GNode_New(name);
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Var_Append(".ALLTARGETS", name, VAR_GLOBAL);
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Lst_Append(allTargets, gn);
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if (doing_depend)
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gn->flags |= FROM_DEPEND;
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return gn;
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}
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/*
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* Return the .END node, which contains the commands to be run when
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* everything else has been made.
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*/
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GNode *Targ_GetEndNode(void)
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{
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/* Save the node locally to avoid having to search for it all the time. */
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static GNode *endNode = NULL;
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if (endNode == NULL) {
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endNode = Targ_GetNode(".END");
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endNode->type = OP_SPECIAL;
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}
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return endNode;
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}
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/* Return the named nodes, creating them as necessary. */
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GNodeList *
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Targ_FindList(StringList *names)
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{
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StringListNode *ln;
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GNodeList *nodes = Lst_New();
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for (ln = names->first; ln != NULL; ln = ln->next) {
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const char *name = ln->datum;
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GNode *gn = Targ_GetNode(name);
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Lst_Append(nodes, gn);
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}
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return nodes;
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}
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/* Return true if should ignore errors when creating gn. */
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Boolean
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Targ_Ignore(const GNode *gn)
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{
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return opts.ignoreErrors || gn->type & OP_IGNORE;
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}
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/* Return true if be silent when creating gn. */
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Boolean
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Targ_Silent(const GNode *gn)
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{
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return opts.beSilent || gn->type & OP_SILENT;
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}
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/* See if the given target is precious. */
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Boolean
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Targ_Precious(const GNode *gn)
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{
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/* XXX: Why are '::' targets precious? */
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return allPrecious || gn->type & (OP_PRECIOUS | OP_DOUBLEDEP);
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}
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/*
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* The main target to be made; only for debugging output.
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* See mainNode in parse.c for the definitive source.
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*/
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static GNode *mainTarg;
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/* Remember the main target to make; only used for debugging. */
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void
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Targ_SetMain(GNode *gn)
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{
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mainTarg = gn;
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}
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static void
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PrintNodeNames(GNodeList *gnodes)
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{
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GNodeListNode *node;
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for (node = gnodes->first; node != NULL; node = node->next) {
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GNode *gn = node->datum;
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debug_printf(" %s%s", gn->name, gn->cohort_num);
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}
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}
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static void
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PrintNodeNamesLine(const char *label, GNodeList *gnodes)
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{
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if (Lst_IsEmpty(gnodes))
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return;
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debug_printf("# %s:", label);
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PrintNodeNames(gnodes);
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debug_printf("\n");
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}
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void
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Targ_PrintCmds(GNode *gn)
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{
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StringListNode *ln;
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for (ln = gn->commands->first; ln != NULL; ln = ln->next) {
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const char *cmd = ln->datum;
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debug_printf("\t%s\n", cmd);
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}
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}
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/* Format a modification time in some reasonable way and return it.
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* The time is placed in a static area, so it is overwritten with each call. */
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char *
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Targ_FmtTime(time_t tm)
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{
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struct tm *parts;
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static char buf[128];
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parts = localtime(&tm);
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(void)strftime(buf, sizeof buf, "%k:%M:%S %b %d, %Y", parts);
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return buf;
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}
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/* Print out a type field giving only those attributes the user can set. */
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void
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Targ_PrintType(int type)
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{
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int tbit;
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#define PRINTBIT(attr) case CONCAT(OP_,attr): debug_printf(" ." #attr); break
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#define PRINTDBIT(attr) case CONCAT(OP_,attr): if (DEBUG(TARG))debug_printf(" ." #attr); break
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type &= ~OP_OPMASK;
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while (type) {
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tbit = 1 << (ffs(type) - 1);
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type &= ~tbit;
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switch(tbit) {
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PRINTBIT(OPTIONAL);
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PRINTBIT(USE);
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PRINTBIT(EXEC);
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PRINTBIT(IGNORE);
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PRINTBIT(PRECIOUS);
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PRINTBIT(SILENT);
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PRINTBIT(MAKE);
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PRINTBIT(JOIN);
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PRINTBIT(INVISIBLE);
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PRINTBIT(NOTMAIN);
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PRINTDBIT(LIB);
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/*XXX: MEMBER is defined, so CONCAT(OP_,MEMBER) gives OP_"%" */
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case OP_MEMBER: if (DEBUG(TARG))debug_printf(" .MEMBER"); break;
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PRINTDBIT(ARCHV);
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PRINTDBIT(MADE);
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PRINTDBIT(PHONY);
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}
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}
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}
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static const char *
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made_name(GNodeMade made)
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{
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switch (made) {
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case UNMADE: return "unmade";
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case DEFERRED: return "deferred";
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case REQUESTED: return "requested";
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case BEINGMADE: return "being made";
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case MADE: return "made";
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case UPTODATE: return "up-to-date";
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case ERROR: return "error when made";
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case ABORTED: return "aborted";
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default: return "unknown enum_made value";
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}
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}
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static const char *
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GNode_OpName(const GNode *gn)
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{
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switch (gn->type & OP_OPMASK) {
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case OP_DEPENDS:
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return ":";
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case OP_FORCE:
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return "!";
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case OP_DOUBLEDEP:
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return "::";
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}
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return "";
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}
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/* Print the contents of a node. */
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void
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Targ_PrintNode(GNode *gn, int pass)
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{
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debug_printf("# %s%s", gn->name, gn->cohort_num);
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GNode_FprintDetails(opts.debug_file, ", ", gn, "\n");
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if (gn->flags == 0)
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return;
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if (GNode_IsTarget(gn)) {
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debug_printf("#\n");
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if (gn == mainTarg) {
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debug_printf("# *** MAIN TARGET ***\n");
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}
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if (pass >= 2) {
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if (gn->unmade > 0) {
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debug_printf("# %d unmade children\n", gn->unmade);
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} else {
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debug_printf("# No unmade children\n");
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}
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if (!(gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC))) {
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if (gn->mtime != 0) {
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debug_printf("# last modified %s: %s\n",
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Targ_FmtTime(gn->mtime),
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made_name(gn->made));
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} else if (gn->made != UNMADE) {
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debug_printf("# non-existent (maybe): %s\n",
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made_name(gn->made));
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} else {
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debug_printf("# unmade\n");
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}
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}
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PrintNodeNamesLine("implicit parents", gn->implicitParents);
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} else {
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if (gn->unmade)
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debug_printf("# %d unmade children\n", gn->unmade);
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}
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PrintNodeNamesLine("parents", gn->parents);
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PrintNodeNamesLine("order_pred", gn->order_pred);
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PrintNodeNamesLine("order_succ", gn->order_succ);
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debug_printf("%-16s%s", gn->name, GNode_OpName(gn));
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Targ_PrintType(gn->type);
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PrintNodeNames(gn->children);
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debug_printf("\n");
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Targ_PrintCmds(gn);
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debug_printf("\n\n");
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if (gn->type & OP_DOUBLEDEP) {
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Targ_PrintNodes(gn->cohorts, pass);
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}
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}
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}
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void
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Targ_PrintNodes(GNodeList *gnodes, int pass)
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{
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GNodeListNode *ln;
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for (ln = gnodes->first; ln != NULL; ln = ln->next)
|
|
Targ_PrintNode(ln->datum, pass);
|
|
}
|
|
|
|
/* Print only those targets that are just a source. */
|
|
static void
|
|
PrintOnlySources(void)
|
|
{
|
|
GNodeListNode *ln;
|
|
|
|
for (ln = allTargets->first; ln != NULL; ln = ln->next) {
|
|
GNode *gn = ln->datum;
|
|
if (GNode_IsTarget(gn))
|
|
continue;
|
|
|
|
debug_printf("#\t%s [%s]", gn->name, GNode_Path(gn));
|
|
Targ_PrintType(gn->type);
|
|
debug_printf("\n");
|
|
}
|
|
}
|
|
|
|
/* Input:
|
|
* pass 1 => before processing
|
|
* 2 => after processing
|
|
* 3 => after processing, an error occurred
|
|
*/
|
|
void
|
|
Targ_PrintGraph(int pass)
|
|
{
|
|
debug_printf("#*** Input graph:\n");
|
|
Targ_PrintNodes(allTargets, pass);
|
|
debug_printf("\n");
|
|
debug_printf("\n");
|
|
|
|
debug_printf("#\n");
|
|
debug_printf("# Files that are only sources:\n");
|
|
PrintOnlySources();
|
|
|
|
debug_printf("#*** Global Variables:\n");
|
|
Var_Dump(VAR_GLOBAL);
|
|
|
|
debug_printf("#*** Command-line Variables:\n");
|
|
Var_Dump(VAR_CMDLINE);
|
|
|
|
debug_printf("\n");
|
|
Dir_PrintDirectories();
|
|
debug_printf("\n");
|
|
|
|
Suff_PrintAll();
|
|
}
|
|
|
|
/* Propagate some type information to cohort nodes (those from the '::'
|
|
* dependency operator).
|
|
*
|
|
* Should be called after the makefiles are parsed but before any action is
|
|
* taken. */
|
|
void
|
|
Targ_Propagate(void)
|
|
{
|
|
GNodeListNode *ln, *cln;
|
|
|
|
for (ln = allTargets->first; ln != NULL; ln = ln->next) {
|
|
GNode *gn = ln->datum;
|
|
GNodeType type = gn->type;
|
|
|
|
if (!(type & OP_DOUBLEDEP))
|
|
continue;
|
|
|
|
for (cln = gn->cohorts->first; cln != NULL; cln = cln->next) {
|
|
GNode *cohort = cln->datum;
|
|
|
|
cohort->type |= type & ~OP_OPMASK;
|
|
}
|
|
}
|
|
}
|