Annotation of src/usr.bin/make/gnode.h, Revision 1.1
1.1 ! espie 1: #ifndef GNODE_H
! 2: #define GNODE_H
! 3: /* $OpenPackages$ */
! 4: /* $OpenBSD$ */
! 5:
! 6: /*
! 7: * Copyright (c) 2001 Marc Espie.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: *
! 18: * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
! 19: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
! 20: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
! 21: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
! 22: * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! 23: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
! 24: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
! 28: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 29: */
! 30:
! 31: #ifndef TIMESTAMP_TYPE
! 32: #include "timestamp_t.h"
! 33: #endif
! 34: #ifndef LIST_TYPE
! 35: #include "lst_t.h"
! 36: #endif
! 37: #ifndef SYMTABLE_H
! 38: #include "symtable.h"
! 39: #endif
! 40:
! 41: struct Suff_;
! 42: /*-
! 43: * The structure for an individual graph node. Each node has several
! 44: * pieces of data associated with it.
! 45: * 1) the name of the target it describes
! 46: * 2) the location of the target file in the file system.
! 47: * 3) the type of operator used to define its sources (qv. parse.c)
! 48: * 4) whether it is involved in this invocation of make
! 49: * 5) whether the target has been remade
! 50: * 6) whether any of its children has been remade
! 51: * 7) the number of its children that are, as yet, unmade
! 52: * 8) its modification time
! 53: * 9) the modification time of its youngest child (qv. make.c)
! 54: * 10) a list of nodes for which this is a source
! 55: * 11) a list of nodes on which this depends
! 56: * 12) a list of nodes that depend on this, as gleaned from the
! 57: * transformation rules.
! 58: * 13) a list of nodes of the same name created by the :: operator
! 59: * 14) a list of nodes that must be made (if they're made) before
! 60: * this node can be, but that do no enter into the datedness of
! 61: * this node.
! 62: * 15) a list of nodes that must be made (if they're made) after
! 63: * this node is, but that do not depend on this node, in the
! 64: * normal sense.
! 65: * 16) a Lst of ``local'' variables that are specific to this target
! 66: * and this target only (qv. var.c [$@ $< $?, etc.])
! 67: * 17) a Lst of strings that are commands to be given to a shell
! 68: * to create this target.
! 69: */
! 70: struct GNode_ {
! 71: char *path; /* The full pathname of the file */
! 72: int type; /* Its type (see the OP flags, below) */
! 73: int order; /* Its wait weight */
! 74:
! 75: bool make; /* true if this target needs to be remade */
! 76: enum {
! 77: UNMADE, BEINGMADE, MADE, UPTODATE, ERROR, ABORTED,
! 78: CYCLE, ENDCYCLE
! 79: } made; /* Set to reflect the state of processing
! 80: * on this node:
! 81: * UNMADE - Not examined yet
! 82: * BEINGMADE - Target is already being made.
! 83: * Indicates a cycle in the graph. (compat
! 84: * mode only)
! 85: * MADE - Was out-of-date and has been made
! 86: * UPTODATE - Was already up-to-date
! 87: * ERROR - An error occured while it was being
! 88: * made (used only in compat mode)
! 89: * ABORTED - The target was aborted due to
! 90: * an error making an inferior (compat).
! 91: * CYCLE - Marked as potentially being part of
! 92: * a graph cycle. If we come back to a
! 93: * node marked this way, it is printed
! 94: * and 'made' is changed to ENDCYCLE.
! 95: * ENDCYCLE - the cycle has been completely
! 96: * printed. Go back and unmark all its
! 97: * members.
! 98: */
! 99: bool childMade; /* true if one of this target's children was
! 100: * made */
! 101: int unmade; /* The number of unmade children */
! 102:
! 103: TIMESTAMP mtime; /* Its modification time */
! 104: TIMESTAMP cmtime; /* The modification time of its youngest
! 105: * child */
! 106:
! 107: LIST iParents; /* Links to parents for which this is an
! 108: * implied source, if any */
! 109: LIST cohorts; /* Other nodes for the :: operator */
! 110: LIST parents; /* Nodes that depend on this one */
! 111: LIST children; /* Nodes on which this one depends */
! 112: LIST successors; /* Nodes that must be made after this one */
! 113: LIST preds; /* Nodes that must be made before this one */
! 114:
! 115: SymTable context; /* The local variables */
! 116: unsigned long lineno; /* First line number of commands. */
! 117: const char * fname; /* File name of commands. */
! 118: LIST commands; /* Creation commands */
! 119: LstNode current; /* Current command, for job */
! 120:
! 121: struct Suff_ *suffix; /* Suffix for the node (determined by
! 122: * Suff_FindDeps and opaque to everyone
! 123: * but the Suff module) */
! 124: char name[1]; /* The target's name */
! 125: };
! 126:
! 127: /*
! 128: * The OP_ constants are used when parsing a dependency line as a way of
! 129: * communicating to other parts of the program the way in which a target
! 130: * should be made. These constants are bitwise-OR'ed together and
! 131: * placed in the 'type' field of each node. Any node that has
! 132: * a 'type' field which satisfies the OP_NOP function was never never on
! 133: * the lefthand side of an operator, though it may have been on the
! 134: * righthand side...
! 135: */
! 136: #define OP_DEPENDS 0x00000001 /* Execution of commands depends on
! 137: * kids (:) */
! 138: #define OP_FORCE 0x00000002 /* Always execute commands (!) */
! 139: #define OP_DOUBLEDEP 0x00000004 /* Execution of commands depends on kids
! 140: * per line (::) */
! 141: #define OP_OPMASK (OP_DEPENDS|OP_FORCE|OP_DOUBLEDEP)
! 142:
! 143: #define OP_OPTIONAL 0x00000008 /* Don't care if the target doesn't
! 144: * exist and can't be created */
! 145: #define OP_USE 0x00000010 /* Use associated commands for parents */
! 146: #define OP_EXEC 0x00000020 /* Target is never out of date, but always
! 147: * execute commands anyway. Its time
! 148: * doesn't matter, so it has none...sort
! 149: * of */
! 150: #define OP_IGNORE 0x00000040 /* Ignore errors when creating the node */
! 151: #define OP_PRECIOUS 0x00000080 /* Don't remove the target when
! 152: * interrupted */
! 153: #define OP_SILENT 0x00000100 /* Don't echo commands when executed */
! 154: #define OP_MAKE 0x00000200 /* Target is a recurrsive make so its
! 155: * commands should always be executed when
! 156: * it is out of date, regardless of the
! 157: * state of the -n or -t flags */
! 158: #define OP_JOIN 0x00000400 /* Target is out-of-date only if any of its
! 159: * children was out-of-date */
! 160: #define OP_MADE 0x00000800 /* Assume the node is already made; even if
! 161: * it really is out of date */
! 162: #define OP_INVISIBLE 0x00004000 /* The node is invisible to its parents.
! 163: * I.e. it doesn't show up in the parents's
! 164: * local variables. */
! 165: #define OP_NOTMAIN 0x00008000 /* The node is exempt from normal 'main
! 166: * target' processing in parse.c */
! 167: #define OP_PHONY 0x00010000 /* Not a file target; run always */
! 168: #define OP_NOPATH 0x00020000 /* Don't search for file in the path */
! 169: /* Attributes applied by PMake */
! 170: #define OP_TRANSFORM 0x80000000 /* The node is a transformation rule */
! 171: #define OP_MEMBER 0x40000000 /* Target is a member of an archive */
! 172: #define OP_LIB 0x20000000 /* Target is a library */
! 173: #define OP_ARCHV 0x10000000 /* Target is an archive construct */
! 174: #define OP_HAS_COMMANDS 0x08000000 /* Target has all the commands it should.
! 175: * Used when parsing to catch multiple
! 176: * commands for a target */
! 177: #define OP_SAVE_CMDS 0x04000000 /* Saving commands on .END (Compat) */
! 178: #define OP_DEPS_FOUND 0x02000000 /* Already processed by Suff_FindDeps */
! 179:
! 180: /*
! 181: * OP_NOP will return true if the node with the given type was not the
! 182: * object of a dependency operator
! 183: */
! 184: #define OP_NOP(t) (((t) & OP_OPMASK) == 0x00000000)
! 185:
! 186: #define OP_NOTARGET (OP_NOTMAIN|OP_USE|OP_EXEC|OP_TRANSFORM)
! 187:
! 188:
! 189: #endif
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