usr.bin/make/GNode.h

   1 /*-
   2  * Copyright (c) 1988, 1989, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 1989 by Berkeley Softworks
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Adam de Boor.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  * $DragonFly: src/usr.bin/make/GNode.h,v 1.8 2005/08/03 19:48:44 okumoto Exp $
  39  */
  40
  41 #ifndef GNode_h_39503bf2
  42 #define GNode_h_39503bf2
  43
  44 #include <stdbool.h>
  45
  46 #include "lst.h"
  47
  48 struct Suff;
  49
  50 /*
  51  * The structure for an individual graph node. Each node has several
  52  * pieces of data associated with it.
  53  */
  54 typedef struct GNode {
  55         char    *name;  /* The target's name */
  56         char    *path;  /* The full pathname of the target file */
  57
  58         /*
  59          * The type of operator used to define the sources (qv. parse.c)
  60          *
  61          * The OP_ constants are used when parsing a dependency line as a way of
  62          * communicating to other parts of the program the way in which a target
  63          * should be made. These constants are bitwise-OR'ed together and
  64          * placed in the 'type' field of each node. Any node that has
  65          * a 'type' field which satisfies the OP_NOP function was never never on
  66          * the lefthand side of an operator, though it may have been on the
  67          * righthand side...
  68          */
  69         int     type;
  70 #define OP_DEPENDS      0x00000001      /* Execution of commands depends on
  71                                          * kids (:) */
  72 #define OP_FORCE        0x00000002      /* Always execute commands (!) */
  73 #define OP_DOUBLEDEP    0x00000004      /* Execution of commands depends on
  74                                          * kids per line (::) */
  75 #define OP_OPMASK       (OP_DEPENDS|OP_FORCE|OP_DOUBLEDEP)
  76
  77 #define OP_OPTIONAL     0x00000008      /* Don't care if the target doesn't
  78                                          * exist and can't be created */
  79 #define OP_USE          0x00000010      /*
  80                                          * Use associated commands for
  81                                          * parents
  82                                          */
  83 #define OP_EXEC         0x00000020      /* Target is never out of date, but
  84                                          * always execute commands anyway.
  85                                          * Its time doesn't matter, so it has
  86                                          * none...sort of
  87                                          */
  88 #define OP_IGNORE       0x00000040      /*
  89                                          * Ignore errors when creating the node
  90                                          */
  91 #define OP_PRECIOUS     0x00000080      /* Don't remove the target when
  92                                          * interrupted */
  93 #define OP_SILENT       0x00000100      /* Don't echo commands when executed */
  94 #define OP_MAKE         0x00000200      /*
  95                                          * Target is a recurrsive make so its
  96                                          * commands should always be executed
  97                                          * when it is out of date, regardless
  98                                          * of the state of the -n or -t flags
  99                                          */
 100 #define OP_JOIN         0x00000400      /* Target is out-of-date only if any of
 101                                          * its children was out-of-date */
 102 #define OP_INVISIBLE    0x00004000      /* The node is invisible to its parents.
 103                                          * I.e. it doesn't show up in the
 104                                          * parents's local variables. */
 105 #define OP_NOTMAIN      0x00008000      /* The node is exempt from normal 'main
 106                                          * target' processing in parse.c */
 107 #define OP_PHONY        0x00010000      /* Not a file target; run always */
 108 /* Attributes applied by PMake */
 109 #define OP_TRANSFORM    0x80000000      /* The node is a transformation rule */
 110 #define OP_MEMBER       0x40000000      /* Target is a member of an archive */
 111 #define OP_LIB          0x20000000      /* Target is a library */
 112 #define OP_ARCHV        0x10000000      /* Target is an archive construct */
 113 #define OP_HAS_COMMANDS 0x08000000      /* Target has all the commands it
 114                                          * should.  Used when parsing to catch
 115                                          * multiple commands for a target */
 116 #define OP_SAVE_CMDS    0x04000000      /* Saving commands on .END (Compat) */
 117 #define OP_DEPS_FOUND   0x02000000      /* Already processed by Suff_FindDeps */
 118
 119 /*
 120  * OP_NOP will return true if the node with the given type was not the
 121  * object of a dependency operator
 122  */
 123 #define OP_NOP(t)       (((t) & OP_OPMASK) == 0x00000000)
 124
 125         int     order;  /* Its wait weight */
 126
 127         bool    make;   /* true if this target needs to be remade */
 128
 129         /* Set to reflect the state of processing on this node */
 130         enum {
 131                 UNMADE,         /* Not examined yet */
 132
 133                 /*
 134                  * Target is already being made. Indicates a cycle in the graph.
 135                  * (compat mode only)
 136                  */
 137                 BEINGMADE,
 138
 139                 MADE,           /* Was out-of-date and has been made */
 140                 UPTODATE,       /* Was already up-to-date */
 141
 142                 /*
 143                  * An error occured while it was being
 144                  * made (used only in compat mode)
 145                  */
 146                 ERROR,
 147
 148                 /*
 149                  * The target was aborted due to an
 150                  * error making an inferior (compat).
 151                  */
 152                 ABORTED,
 153
 154                 /*
 155                  * Marked as potentially being part of a graph cycle.  If we
 156                  * come back to a node marked this way, it is printed and
 157                  * 'made' is changed to ENDCYCLE.
 158                  */
 159                 CYCLE,
 160
 161                 /*
 162                  * The cycle has been completely printed.  Go back and
 163                  * unmark all its members.
 164                  */
 165                 ENDCYCLE
 166         } made;
 167
 168         /* true if one of this target's children was made */
 169         bool    childMade;
 170
 171         int     unmade;         /* The number of unmade children */
 172         int     mtime;          /* Its modification time */
 173         int     cmtime;         /* Modification time of its youngest child */
 174
 175         /*
 176          * Links to parents for which this is an implied source, if any. (nodes
 177          * that depend on this, as gleaned from the transformation rules.
 178          */
 179         Lst     iParents;
 180
 181         /* List of nodes of the same name created by the :: operator */
 182         Lst     cohorts;
 183
 184         /* Lst of nodes for which this is a source (that depend on this one) */
 185         Lst     parents;
 186
 187         /* List of nodes on which this depends */
 188         Lst     children;
 189
 190         /*
 191          * List of nodes that must be made (if they're made) after this node is,
 192          * but that do not depend on this node, in the normal sense.
 193          */
 194         Lst     successors;
 195
 196         /*
 197          * List of nodes that must be made (if they're made) before this node
 198          * can be, but that do no enter into the datedness of this node.
 199          */
 200         Lst     preds;
 201
 202         /*
 203          * List of ``local'' variables that are specific to this target
 204          * and this target only (qv. var.c [$@ $< $?, etc.])
 205          */
 206         Lst     context;
 207
 208         /*
 209          * List of strings that are commands to be given to a shell
 210          * to create this target.
 211          */
 212         Lst     commands;
 213
 214         /* current command executing in compat mode */
 215         LstNode *compat_command;
 216
 217         /*
 218          * Suffix for the node (determined by Suff_FindDeps and opaque to
 219          * everyone but the Suff module)
 220          */
 221         struct Suff     *suffix;
 222 } GNode;
 223
 224 #endif /* GNode_h_39503bf2 */