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cc85b927cd
In various places we were passing flags and characters to compare, then using complex conditionals to see where to stop in string searches. Performance numbers reveal that we were spending as much as 23% of our processing time in these functions, most of it in the comparison lines. Instead create a character map and use a single bitwise comparison to determine if this is any one of the stop characters.
90 lines
3 KiB
C
90 lines
3 KiB
C
/* Definitions of dependency data structures for GNU Make.
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Copyright (C) 1988-2013 Free Software Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Flag bits for the second argument to 'read_makefile'.
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These flags are saved in the 'changed' field of each
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'struct dep' in the chain returned by 'read_all_makefiles'. */
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#define RM_NO_DEFAULT_GOAL (1 << 0) /* Do not set default goal. */
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#define RM_INCLUDED (1 << 1) /* Search makefile search path. */
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#define RM_DONTCARE (1 << 2) /* No error if it doesn't exist. */
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#define RM_NO_TILDE (1 << 3) /* Don't expand ~ in file name. */
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#define RM_NOFLAG 0
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/* Structure representing one dependency of a file.
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Each struct file's 'deps' points to a chain of these,
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chained through the 'next'. 'stem' is the stem for this
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dep line of static pattern rule or NULL.
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Note that the first two words of this match a struct nameseq. */
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struct dep
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{
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struct dep *next;
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const char *name;
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const char *stem;
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struct file *file;
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unsigned int changed : 8;
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unsigned int ignore_mtime : 1;
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unsigned int staticpattern : 1;
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unsigned int need_2nd_expansion : 1;
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unsigned int dontcare : 1;
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};
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/* Structure used in chains of names, for parsing and globbing. */
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struct nameseq
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{
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struct nameseq *next;
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const char *name;
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};
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#define PARSEFS_NONE 0x0000
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#define PARSEFS_NOSTRIP 0x0001
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#define PARSEFS_NOAR 0x0002
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#define PARSEFS_NOGLOB 0x0004
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#define PARSEFS_EXISTS 0x0008
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#define PARSEFS_NOCACHE 0x0010
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#define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
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(_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f))
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#ifdef VMS
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void *parse_file_seq ();
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#else
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void *parse_file_seq (char **stringp, unsigned int size,
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int stopmap, const char *prefix, int flags);
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#endif
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char *tilde_expand (const char *name);
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#ifndef NO_ARCHIVES
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struct nameseq *ar_glob (const char *arname, const char *member_pattern, unsigned int size);
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#endif
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#define dep_name(d) ((d)->name == 0 ? (d)->file->name : (d)->name)
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#define alloc_dep() (xcalloc (sizeof (struct dep)))
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#define free_ns(_n) free (_n)
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#define free_dep(_d) free_ns (_d)
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struct dep *copy_dep_chain (const struct dep *d);
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void free_dep_chain (struct dep *d);
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void free_ns_chain (struct nameseq *n);
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struct dep *read_all_makefiles (const char **makefiles);
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void eval_buffer (char *buffer, const gmk_floc *floc);
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int update_goal_chain (struct dep *goals);
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