mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
speed up * 2
This commit is contained in:
"Vladimir N. Oleynik"
parent
1a2f4d9af7
commit
d128b71820
@ -1,5 +1,5 @@
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/*
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* Another fast dependencies generator for Makefiles, Version 2.2
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* Another fast dependencies generator for Makefiles, Version 2.3
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*
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* Copyright (C) 2005 by Vladimir Oleynik <dzo@simtreas.ru>
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* mmaping file may be originally by Linus Torvalds.
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@ -18,6 +18,7 @@
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* path/file.o: include/config/key*.h found_include_*.h
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* path/inc.h: include/config/key*.h found_included_include_*.h
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* This program does not generate dependencies for #include <...>
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* BUG: all includes name must unique
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*/
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#define LOCAL_INCLUDE_PATH "include"
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@ -37,7 +38,6 @@
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"[-k path_for_stored_keys] [dirs]"
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/stat.h>
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@ -55,14 +55,15 @@
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typedef struct BB_KEYS {
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char *keyname;
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size_t key_sz;
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const char *value;
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char *stored_path;
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int checked;
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char *checked;
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struct BB_KEYS *next;
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} bb_key_t;
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static bb_key_t *check_key(bb_key_t *k, const char *nk);
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static bb_key_t *make_new_key(bb_key_t *k, const char *nk);
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static bb_key_t *check_key(bb_key_t *k, const char *nk, size_t key_sz);
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static bb_key_t *make_new_key(bb_key_t *k, const char *nk, size_t key_sz);
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/* partial and simplified libbb routine */
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static void bb_error_d(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
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@ -88,8 +89,9 @@ static int mode;
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#define CONFIG_MODE 0
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#define SOURCES_MODE 1
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static void parse_inc(const char *include, const char *fname);
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static void parse_conf_opt(char *opt, const char *val, size_t rsz);
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static void parse_inc(const char *include, const char *fname, size_t key_sz);
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static void parse_conf_opt(const char *opt, const char *val,
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size_t rsz, size_t key_sz);
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/* for speed tricks */
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static char first_chars[257]; /* + L_EOF */
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@ -102,7 +104,6 @@ static size_t mema_id = 128; /* first allocated for id */
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static char *id_s;
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#define yy_error_d(s) bb_error_d("%s:%d hmm, %s", fname, line, s)
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/* state */
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@ -150,6 +151,7 @@ static void c_lex(const char *fname, long fsize)
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char *val = NULL;
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unsigned char *optr, *oend;
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unsigned char *start = NULL; /* stupid initialize */
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size_t opt_len = 0; /* stupid initialize */
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int fd;
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char *map;
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@ -176,19 +178,6 @@ static void c_lex(const char *fname, long fsize)
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called = state = S;
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for(;;) {
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if(state == LI || state == DV) {
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/* store "include.h" or config mode #define KEY "|'..."|' */
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if(state == LI) {
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put_id(0);
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parse_inc(id, fname);
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} else {
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/* #define KEY "[VAL]" */
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put_id(c); /* #define KEY "VALUE"<- */
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put_id(0);
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parse_conf_opt(id, val, (optr - start));
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}
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state = S;
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}
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if(prev_state != state) {
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prev_state = state;
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getc1();
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@ -260,8 +249,7 @@ static void c_lex(const char *fname, long fsize)
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put_id(c);
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getc1();
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} while(isalnums[c]);
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put_id(0);
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check_key(key_top, id);
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check_key(key_top, id, id_len);
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}
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} else {
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/* <S>\\ */
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@ -316,7 +304,15 @@ static void c_lex(const char *fname, long fsize)
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put_id(c);
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} else if(c == state) {
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/* <STR>\" or <CHR>\' */
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state = called;
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if(called == LI) {
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/* store "include.h" */
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parse_inc(id, fname, id_len);
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} else if(called == DV) {
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put_id(c); /* config mode #define KEY "VAL"<- */
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put_id(0);
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parse_conf_opt(id, val, (optr - start), opt_len);
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}
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state = S;
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break;
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} else if(val)
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put_id(c);
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@ -346,18 +342,18 @@ static void c_lex(const char *fname, long fsize)
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if(state == POUND) {
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/* tricks */
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static const char * const preproc[] = {
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/* 0-4 */
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"", "", "", "", "",
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/* 5 */ /* 6 */ /* 7 */
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"undef", "define", "include",
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/* 0-3 */
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"", "", "", "",
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/* 4 */ /* 5 */ /* 6 */
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"ndef", "efine", "nclude",
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};
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size_t diu = first_chars_diu[c]; /* strlen and preproc ptr */
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const unsigned char *p = optr - 1;
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const unsigned char *p = optr;
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while(isalnums[c]) getc1();
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/* have str begined with c, readed == strlen key and compared */
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if(diu != S && diu == (optr-p-1) && !memcmp(p, preproc[diu], diu)) {
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state = *p;
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state = p[-1];
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id_len = 0; /* common for save */
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} else {
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state = S;
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@ -392,12 +388,12 @@ static void c_lex(const char *fname, long fsize)
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}
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if(!id_len)
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yy_error_d("expected identifier");
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put_id(0);
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if(state == U) {
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parse_conf_opt(id, NULL, (optr - start));
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parse_conf_opt(id, NULL, (optr - start), id_len);
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state = S;
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} else {
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/* D -> DK */
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opt_len = id_len;
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state = DK;
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}
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}
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@ -419,9 +415,10 @@ static void c_lex(const char *fname, long fsize)
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put_id(c);
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getc1();
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}
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c = 0;
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put_id(0);
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parse_conf_opt(id, val, (optr - start), opt_len);
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state = S;
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ungetc1();
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state = DV;
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continue;
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}
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}
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@ -440,28 +437,28 @@ static llist_t *Iop;
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static bb_key_t *Ifound;
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static int noiwarning;
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static bb_key_t *check_key(bb_key_t *k, const char *nk)
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static bb_key_t *check_key(bb_key_t *k, const char *nk, size_t key_sz)
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{
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bb_key_t *cur;
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for(cur = k; cur; cur = cur->next) {
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if(strcmp(cur->keyname, nk) == 0) {
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cur->checked = 1;
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if(key_sz == cur->key_sz && memcmp(cur->keyname, nk, key_sz) == 0) {
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cur->checked = cur->stored_path;
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return cur;
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}
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}
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return NULL;
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}
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static bb_key_t *make_new_key(bb_key_t *k, const char *nk)
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static bb_key_t *make_new_key(bb_key_t *k, const char *nk, size_t key_sz)
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{
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bb_key_t *cur;
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size_t nk_size;
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nk_size = strlen(nk) + 1;
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cur = xmalloc(sizeof(bb_key_t) + nk_size);
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cur->keyname = memcpy(cur + 1, nk, nk_size);
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cur->checked = 0;
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cur = xmalloc(sizeof(bb_key_t) + key_sz + 1);
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cur->keyname = memcpy(cur + 1, nk, key_sz);
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cur->keyname[key_sz] = '\0';
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cur->key_sz = key_sz;
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cur->checked = NULL;
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cur->next = k;
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return cur;
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}
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@ -472,7 +469,7 @@ static inline char *store_include_fullpath(char *p_i, bb_key_t *li)
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if(access(p_i, F_OK) == 0) {
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ok = li->stored_path = bb_simplify_path(p_i);
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li->checked = 1;
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li->checked = ok;
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} else {
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ok = NULL;
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}
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@ -480,33 +477,28 @@ static inline char *store_include_fullpath(char *p_i, bb_key_t *li)
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return ok;
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}
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static void parse_inc(const char *include, const char *fname)
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static void parse_inc(const char *include, const char *fname, size_t key_sz)
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{
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bb_key_t *li;
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char *p_i;
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llist_t *lo;
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li = check_key(Ifound, include);
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li = check_key(Ifound, include, key_sz);
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if(li)
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return;
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Ifound = li = make_new_key(Ifound, include);
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Ifound = li = make_new_key(Ifound, include, key_sz);
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include = li->keyname;
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if(include[0] != '/') {
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/* relative */
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int w;
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const char *p;
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p_i = strrchr(fname, '/');
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if(p_i == NULL) {
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p = ".";
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w = 1;
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} else {
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p_i = strrchr(fname, '/'); /* fname have absolute pathname */
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w = (p_i-fname);
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p = fname;
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}
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p_i = bb_asprint("%.*s/%s", w, p, include);
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/* find from current directory of source file */
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p_i = bb_asprint("%.*s/%s", w, fname, include);
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if(store_include_fullpath(p_i, li))
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return;
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/* find from "-I include" specified directories */
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for(lo = Iop; lo; lo = lo->link) {
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p_i = bb_asprint("%s/%s", lo->data, include);
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if(store_include_fullpath(p_i, li))
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@ -515,8 +507,7 @@ static void parse_inc(const char *include, const char *fname)
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} else {
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/* absolute include pathname */
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if(access(include, F_OK) == 0) {
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li->stored_path = bb_xstrdup(include);
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li->checked = 1;
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li->checked = li->stored_path = bb_xstrdup(include);
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return;
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}
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}
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@ -525,89 +516,91 @@ static void parse_inc(const char *include, const char *fname)
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fprintf(stderr, "%s: Warning: #include \"%s\" not found in specified paths\n", fname, include);
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}
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static void parse_conf_opt(char *opt, const char *val, size_t recordsz)
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static void parse_conf_opt(const char *opt, const char *val,
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size_t recordsz, size_t key_sz)
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{
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bb_key_t *cur;
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char *k;
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char *s, *p;
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struct stat st;
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int fd;
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int cmp_ok = 0;
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static char *record_buf;
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static char *r_cmp;
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static size_t r_sz;
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ssize_t rw_ret;
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cur = check_key(key_top, opt);
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cur = check_key(key_top, opt, key_sz);
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if(cur != NULL) {
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/* present already */
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cur->checked = 0; /* store only */
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cur->checked = NULL; /* store only */
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if(cur->value == NULL && val == NULL)
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return;
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if(cur->value != NULL && val != NULL && strcmp(cur->value, val) == 0)
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if(cur->value != NULL && val != NULL && !strcmp(cur->value, val))
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return;
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fprintf(stderr, "Warning: redefined %s\n", opt);
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k = cur->keyname;
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fprintf(stderr, "Warning: redefined %s\n", k);
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} else {
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key_top = cur = make_new_key(key_top, opt);
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key_top = cur = make_new_key(key_top, opt, key_sz);
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k = cur->keyname;
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}
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/* do generate record */
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recordsz += 2; /* \n\0 */
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if(recordsz > r_sz) {
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record_buf = xrealloc(record_buf, r_sz=recordsz);
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r_cmp = xrealloc(r_cmp, recordsz);
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}
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if(recordsz > r_sz)
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record_buf = xrealloc(record_buf, (r_sz = recordsz) * 2);
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s = record_buf;
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/* may be short count " " */
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if(val) {
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if(*val == '\0') {
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cur->value = "";
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recordsz = sprintf(s, "#define %s\n", opt);
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recordsz = sprintf(s, "#define %s\n", k);
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} else {
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cur->value = bb_xstrdup(val);
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recordsz = sprintf(s, "#define %s %s\n", opt, val);
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recordsz = sprintf(s, "#define %s %s\n", k, val);
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}
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} else {
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cur->value = NULL;
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recordsz = sprintf(s, "#undef %s\n", opt);
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recordsz = sprintf(s, "#undef %s\n", k);
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}
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/* size_t -> ssize_t :( */
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rw_ret = (ssize_t)recordsz;
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/* trick, save first char KEY for do fast identify id */
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first_chars[(int)*opt] = *opt;
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first_chars[(int)*k] = *k;
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cur->stored_path = k = bb_asprint("%s/%s.h", kp, k);
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/* key converting [A-Z_] -> [a-z/] */
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for(p = opt; *p; p++) {
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for(p = k + kp_len + 1; *p; p++) {
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if(*p >= 'A' && *p <= 'Z')
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*p = *p - 'A' + 'a';
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else if(*p == '_' && p[1] > '9') /* do not change A_1 to A/1 */
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*p = '/';
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}
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/* check kp/key.h if present after previous usage */
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cur->stored_path = opt = bb_asprint("%s/%s.h", kp, opt);
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if(stat(opt, &st)) {
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p = opt + kp_len;
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while(*++p) {
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if(stat(k, &st)) {
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for(p = k + kp_len + 1; *p; p++) {
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/* Auto-create directories. */
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if (*p == '/') {
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*p = '\0';
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if (access(opt, F_OK) != 0 && mkdir(opt, 0755) != 0)
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bb_error_d("mkdir(%s): %m", opt);
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if (access(k, F_OK) != 0 && mkdir(k, 0755) != 0)
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bb_error_d("mkdir(%s): %m", k);
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*p = '/';
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}
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}
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} else {
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/* found */
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if(st.st_size == (off_t)recordsz) {
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fd = open(opt, O_RDONLY);
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char *r_cmp = s + recordsz;
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fd = open(k, O_RDONLY);
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if(fd < 0 || read(fd, r_cmp, recordsz) < rw_ret)
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bb_error_d("%s: %m", opt);
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bb_error_d("%s: %m", k);
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close(fd);
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cmp_ok = memcmp(s, r_cmp, recordsz) == 0;
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}
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}
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if(!cmp_ok) {
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fd = open(opt, O_WRONLY|O_CREAT|O_TRUNC, 0644);
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fd = open(k, O_WRONLY|O_CREAT|O_TRUNC, 0644);
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if(fd < 0 || write(fd, s, recordsz) < rw_ret)
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bb_error_d("%s: %m", opt);
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bb_error_d("%s: %m", k);
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close(fd);
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}
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}
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@ -617,16 +610,16 @@ static int show_dep(int first, bb_key_t *k, const char *name)
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bb_key_t *cur;
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for(cur = k; cur; cur = cur->next) {
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if(cur->checked && cur->stored_path) {
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if(cur->checked) {
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if(first) {
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printf("\n%s:", name);
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first = 0;
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} else {
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printf(" \\\n ");
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}
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printf(" %s", cur->stored_path);
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printf(" %s", cur->checked);
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}
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cur->checked = 0;
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cur->checked = NULL;
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}
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return first;
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}
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@ -643,9 +636,6 @@ parse_chd(const char *fe, const char *p, size_t dirlen)
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static char *dir_and_entry;
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static size_t dir_and_entry_sz;
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if (*fe == '.')
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return NULL;
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df_sz = dirlen + strlen(fe) + 2; /* dir/file\0 */
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if(df_sz > dir_and_entry_sz)
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dir_and_entry = xrealloc(dir_and_entry, dir_and_entry_sz = df_sz);
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@ -653,7 +643,7 @@ parse_chd(const char *fe, const char *p, size_t dirlen)
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sprintf(fp, "%s/%s", p, fe);
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if(stat(fp, &st)) {
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fprintf(stderr, "Warning: stat(%s): %m", fp);
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fprintf(stderr, "Warning: stat(%s): %m\n", fp);
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return NULL;
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}
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if(S_ISREG(st.st_mode)) {
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@ -677,17 +667,14 @@ parse_chd(const char *fe, const char *p, size_t dirlen)
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int first;
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c_lex(fp, st.st_size);
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fp = bb_simplify_path(fp);
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if(*e == 'c') {
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||||
/* *.c -> *.o */
|
||||
e = strrchr(fp, '.') + 1;
|
||||
*e = 'o';
|
||||
}
|
||||
first = show_dep(1, Ifound, fp);
|
||||
first = show_dep(first, key_top, fp);
|
||||
if(first == 0)
|
||||
putchar('\n');
|
||||
free(fp);
|
||||
}
|
||||
return NULL;
|
||||
} else if(S_ISDIR(st.st_mode)) {
|
||||
@ -714,7 +701,7 @@ static inline llist_t *llist_add_to(llist_t *old_head, char *new_item)
|
||||
return(new_head);
|
||||
}
|
||||
|
||||
static void scan_dir_find_ch_files(char *p)
|
||||
static void scan_dir_find_ch_files(const char *p)
|
||||
{
|
||||
llist_t *dirs;
|
||||
llist_t *d_add;
|
||||
@ -723,23 +710,25 @@ static void scan_dir_find_ch_files(char *p)
|
||||
DIR *dir;
|
||||
size_t dirlen;
|
||||
|
||||
dirs = llist_add_to(NULL, p);
|
||||
dirs = llist_add_to(NULL, bb_simplify_path(p));
|
||||
/* emulate recursive */
|
||||
while(dirs) {
|
||||
d_add = NULL;
|
||||
while(dirs) {
|
||||
dir = opendir(dirs->data);
|
||||
if (dir == NULL)
|
||||
fprintf(stderr, "Warning: opendir(%s): %m", dirs->data);
|
||||
fprintf(stderr, "Warning: opendir(%s): %m\n", dirs->data);
|
||||
dirlen = strlen(dirs->data);
|
||||
while ((de = readdir(dir)) != NULL) {
|
||||
char *found_dir = parse_chd(de->d_name, dirs->data, dirlen);
|
||||
char *found_dir;
|
||||
|
||||
if (de->d_name[0] == '.')
|
||||
continue;
|
||||
found_dir = parse_chd(de->d_name, dirs->data, dirlen);
|
||||
if(found_dir)
|
||||
d_add = llist_add_to(d_add, found_dir);
|
||||
}
|
||||
closedir(dir);
|
||||
if(dirs->data != p)
|
||||
free(dirs->data);
|
||||
d = dirs;
|
||||
dirs = dirs->link;
|
||||
@ -824,9 +813,9 @@ int main(int argc, char **argv)
|
||||
}
|
||||
first_chars[i] = '-'; /* L_EOF */
|
||||
/* trick for fast find "define", "include", "undef" */
|
||||
first_chars_diu[(int)'d'] = (char)6; /* strlen("define"); */
|
||||
first_chars_diu[(int)'i'] = (char)7; /* strlen("include"); */
|
||||
first_chars_diu[(int)'u'] = (char)5; /* strlen("undef"); */
|
||||
first_chars_diu[(int)'d'] = (char)5; /* strlen("define") - 1; */
|
||||
first_chars_diu[(int)'i'] = (char)6; /* strlen("include") - 1; */
|
||||
first_chars_diu[(int)'u'] = (char)4; /* strlen("undef") - 1; */
|
||||
|
||||
/* parse configs */
|
||||
for(fl = configs; fl; fl = fl->link) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user