Annotation of src/usr.bin/make/gnode.h, Revision 1.16
1.1 espie 1: #ifndef GNODE_H
2: #define GNODE_H
3: /* $OpenPackages$ */
1.6 espie 4: /* $OpenBSD$ */
1.1 espie 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: */
1.5 espie 70:
1.10 espie 71: #define UNKNOWN 0
1.5 espie 72: #define BEINGMADE 1
73: #define MADE 2
1.15 espie 74: #define UPTODATE 3
1.5 espie 75: #define ERROR 4
76: #define ABORTED 5
77: #define CYCLE 6
78: #define ENDCYCLE 7
79: #define NOSUCHNODE 8
80:
1.15 espie 81: #define SPECIAL_NONE 0U
82: #define SPECIAL_PATH 21U
83: #define SPECIAL_MASK 63U
84: #define SPECIAL_TARGET 64U
85: #define SPECIAL_SOURCE 128U
1.5 espie 86: #define SPECIAL_TARGETSOURCE (SPECIAL_TARGET|SPECIAL_SOURCE)
87:
1.1 espie 88: struct GNode_ {
1.15 espie 89: unsigned int special_op; /* special op to apply */
1.5 espie 90: unsigned char special;/* type of special node */
1.14 espie 91: char must_make; /* true if this target needs to be remade */
1.5 espie 92: char childMade; /* true if one of this target's children was
93: * made */
1.9 espie 94: char built_status; /* Set to reflect the state of processing
1.5 espie 95: * on this node:
1.10 espie 96: * UNKNOWN - Not examined yet
97: * BEINGMADE - Target is currently being made.
1.5 espie 98: * MADE - Was out-of-date and has been made
99: * UPTODATE - Was already up-to-date
100: * ERROR - An error occurred while it was being
101: * made (used only in compat mode)
102: * ABORTED - The target was aborted due to
1.10 espie 103: * an error making an inferior.
1.5 espie 104: * CYCLE - Marked as potentially being part of
105: * a graph cycle. If we come back to a
106: * node marked this way, it is printed
1.9 espie 107: * and 'built_status' is changed to ENDCYCLE.
1.5 espie 108: * ENDCYCLE - the cycle has been completely
109: * printed. Go back and unmark all its
110: * members.
111: */
1.14 espie 112: char build_lock; /* for parallel build in siblings */
1.5 espie 113: char *path; /* The full pathname of the file */
1.15 espie 114: unsigned int type; /* Its type (see the OP flags, below) */
1.5 espie 115: int order; /* Its wait weight */
116:
117: int unmade; /* The number of unmade children */
118:
119: TIMESTAMP mtime; /* Its modification time */
120: TIMESTAMP cmtime; /* The modification time of its youngest
121: * child */
122:
1.8 espie 123: GNode *impliedsrc;
1.5 espie 124: LIST cohorts; /* Other nodes for the :: operator */
125: LIST parents; /* Nodes that depend on this one */
126: LIST children; /* Nodes on which this one depends */
127: LIST successors; /* Nodes that must be made after this one */
128: LIST preds; /* Nodes that must be made before this one */
129:
130: SymTable context; /* The local variables */
131: unsigned long lineno;/* First line number of commands. */
132: const char *fname; /* File name of commands. */
133: LIST commands; /* Creation commands */
1.13 espie 134: LIST expanded; /* Expanded commands */
1.5 espie 135: struct Suff_ *suffix;/* Suffix for the node (determined by
136: * Suff_FindDeps and opaque to everyone
137: * but the Suff module) */
1.14 espie 138: struct GNode_ *sibling; /* equivalent targets */
139: /* stuff for target name equivalence */
140: char *basename; /* pointer to name stripped of path */
141: struct GNode_ *next;
1.5 espie 142: char name[1]; /* The target's name */
1.1 espie 143: };
144:
1.14 espie 145: #define has_been_built(gn) \
146: ((gn)->built_status == MADE || (gn)->built_status == UPTODATE)
147: #define should_have_file(gn) \
148: ((gn)->special == SPECIAL_NONE && \
149: ((gn)->type & (OP_PHONY | OP_DUMMY)) == 0)
1.1 espie 150: /*
151: * The OP_ constants are used when parsing a dependency line as a way of
152: * communicating to other parts of the program the way in which a target
153: * should be made. These constants are bitwise-OR'ed together and
154: * placed in the 'type' field of each node. Any node that has
155: * a 'type' field which satisfies the OP_NOP function was never never on
156: * the lefthand side of an operator, though it may have been on the
157: * righthand side...
158: */
159: #define OP_DEPENDS 0x00000001 /* Execution of commands depends on
160: * kids (:) */
161: #define OP_FORCE 0x00000002 /* Always execute commands (!) */
162: #define OP_DOUBLEDEP 0x00000004 /* Execution of commands depends on kids
163: * per line (::) */
1.6 espie 164: #define OP_ERROR 0x00000000
1.1 espie 165: #define OP_OPMASK (OP_DEPENDS|OP_FORCE|OP_DOUBLEDEP)
166:
167: #define OP_OPTIONAL 0x00000008 /* Don't care if the target doesn't
168: * exist and can't be created */
169: #define OP_USE 0x00000010 /* Use associated commands for parents */
170: #define OP_EXEC 0x00000020 /* Target is never out of date, but always
171: * execute commands anyway. Its time
172: * doesn't matter, so it has none...sort
173: * of */
174: #define OP_IGNORE 0x00000040 /* Ignore errors when creating the node */
175: #define OP_PRECIOUS 0x00000080 /* Don't remove the target when
176: * interrupted */
177: #define OP_SILENT 0x00000100 /* Don't echo commands when executed */
1.5 espie 178: #define OP_MAKE 0x00000200 /* Target is a recursive make so its
1.1 espie 179: * commands should always be executed when
180: * it is out of date, regardless of the
181: * state of the -n or -t flags */
182: #define OP_JOIN 0x00000400 /* Target is out-of-date only if any of its
183: * children was out-of-date */
184: #define OP_MADE 0x00000800 /* Assume the node is already made; even if
185: * it really is out of date */
1.14 espie 186: #define OP_INVISIBLE 0x00001000 /* The node is invisible to its parents.
1.1 espie 187: * I.e. it doesn't show up in the parents's
188: * local variables. */
1.14 espie 189: #define OP_NOTMAIN 0x00002000 /* The node is exempt from normal 'main
1.1 espie 190: * target' processing in parse.c */
1.14 espie 191: #define OP_PHONY 0x00004000 /* Not a file target; run always */
192: #define OP_NOPATH 0x00008000 /* Don't search for file in the path */
193: #define OP_NODEFAULT 0x00010000 /* Special node that never needs */
1.5 espie 194: /* DEFAULT commands applied */
1.14 espie 195: #define OP_DUMMY 0x00020000 /* node was created by default, but it */
1.5 espie 196: /* does not really exist. */
1.1 espie 197: /* Attributes applied by PMake */
1.14 espie 198: #define OP_TRANSFORM 0x00040000 /* The node is a transformation rule */
199: #define OP_MEMBER 0x00080000 /* Target is a member of an archive */
200: #define OP_LIB 0x00100000 /* Target is a library */
201: #define OP_ARCHV 0x00200000 /* Target is an archive construct */
202: #define OP_HAS_COMMANDS 0x00400000 /* Target has all the commands it should.
1.1 espie 203: * Used when parsing to catch multiple
204: * commands for a target */
1.14 espie 205: #define OP_DEPS_FOUND 0x00800000 /* Already processed by Suff_FindDeps */
1.7 espie 206: #define OP_RESOLVED 0x01000000 /* We looked harder already */
1.1 espie 207:
208: /*
209: * OP_NOP will return true if the node with the given type was not the
210: * object of a dependency operator
211: */
212: #define OP_NOP(t) (((t) & OP_OPMASK) == 0x00000000)
213:
214: #define OP_NOTARGET (OP_NOTMAIN|OP_USE|OP_EXEC|OP_TRANSFORM)
215:
216:
217: #endif
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