Annotation of src/usr.bin/make/gnode.h, Revision 1.4
1.1 espie 1: #ifndef GNODE_H
2: #define GNODE_H
3: /* $OpenPackages$ */
1.3 espie 4: /* $OpenBSD: gnode.h,v 1.2 2001/09/19 10:58:07 mpech Exp $ */
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: */
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
1.2 mpech 87: * ERROR - An error occurred while it was being
1.1 espie 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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