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Merge branch 'master' into int-new

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This commit is contained in:
Ondrej Zajicek (work) 2017-05-25 23:37:50 +02:00
commit a1dc526760
4 changed files with 93 additions and 117 deletions
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154
conf/cf-lex.l
View file

@ -48,6 +48,7 @@
#include "conf/conf.h"
#include "conf/cf-parse.tab.h"
#include "lib/string.h"
#include "lib/hash.h"
struct keyword {
byte *name;
@ -57,22 +58,32 @@ struct keyword {
#include "conf/keywords.h"
#define KW_HASH_SIZE 64
static struct keyword *kw_hash[KW_HASH_SIZE];
static int kw_hash_inited;
#define SYM_HASH_SIZE 128
static uint cf_hash(byte *c);
#define KW_KEY(n) n->name
#define KW_NEXT(n) n->next
#define KW_EQ(a,b) !strcmp(a,b)
#define KW_FN(k) cf_hash(k)
#define KW_ORDER 8 /* Fixed */
#define SYM_KEY(n) n->name, n->scope->active
#define SYM_NEXT(n) n->next
#define SYM_EQ(a,s1,b,s2) !strcmp(a,b) && s1 == s2
#define SYM_FN(k,s) cf_hash(k)
#define SYM_ORDER 6 /* Initial */
#define SYM_REHASH sym_rehash
#define SYM_PARAMS /8, *1, 2, 2, 6, 20
HASH_DEFINE_REHASH_FN(SYM, struct symbol)
HASH(struct keyword) kw_hash;
struct sym_scope {
struct sym_scope *next; /* Next on scope stack */
struct symbol *name; /* Name of this scope */
int active; /* Currently entered */
};
static struct sym_scope *conf_this_scope;
static int cf_hash(byte *c);
static inline struct symbol * cf_get_sym(byte *c, uint h0);
linpool *cfg_mem;
int (*cf_read_hook)(byte *buf, unsigned int max, int fd);
@ -254,11 +265,9 @@ else: {
yytext[yyleng-1] = 0;
yytext++;
}
unsigned int h = cf_hash(yytext);
struct keyword *k = kw_hash[h & (KW_HASH_SIZE-1)];
while (k)
{
if (!strcmp(k->name, yytext))
struct keyword *k = HASH_FIND(kw_hash, KW, yytext);
if (k)
{
if (k->value > 0)
return k->value;
@ -268,9 +277,8 @@ else: {
return ENUM;
}
}
k=k->next;
}
cf_lval.s = cf_get_sym(yytext, h);
cf_lval.s = cf_get_symbol(yytext);
return SYM;
}
@ -333,13 +341,13 @@ else: {
%%
static int
static uint
cf_hash(byte *c)
{
unsigned int h = 13;
uint h = 13 << 24;
while (*c)
h = (h * 37) + *c++;
h = h + (h >> 2) + (h >> 5) + ((uint) *c++ << 24);
return h;
}
@ -504,58 +512,29 @@ check_eof(void)
}
static struct symbol *
cf_new_sym(byte *c, uint h0)
cf_new_symbol(byte *c)
{
uint h = h0 & (SYM_HASH_SIZE-1);
struct symbol *s, **ht;
int l;
struct symbol *s;
if (!new_config->sym_hash)
new_config->sym_hash = cfg_allocz(SYM_HASH_SIZE * sizeof(struct keyword *));
ht = new_config->sym_hash;
l = strlen(c);
uint l = strlen(c);
if (l > SYM_MAX_LEN)
cf_error("Symbol too long");
s = cfg_alloc(sizeof(struct symbol) + l);
s->next = ht[h];
ht[h] = s;
s->scope = conf_this_scope;
s->class = SYM_VOID;
s->def = NULL;
s->aux = 0;
strcpy(s->name, c);
if (!new_config->sym_hash.data)
HASH_INIT(new_config->sym_hash, new_config->pool, SYM_ORDER);
HASH_INSERT2(new_config->sym_hash, SYM, new_config->pool, s);
return s;
}
static struct symbol *
cf_find_sym(struct config *cfg, byte *c, uint h0)
{
uint h = h0 & (SYM_HASH_SIZE-1);
struct symbol *s, **ht;
if (ht = cfg->sym_hash)
{
for(s = ht[h]; s; s=s->next)
if (!strcmp(s->name, c) && s->scope->active)
return s;
}
if (ht = cfg->sym_fallback)
{
/* We know only top-level scope is active */
for(s = ht[h]; s; s=s->next)
if (!strcmp(s->name, c) && s->scope->active)
return s;
}
return NULL;
}
static inline struct symbol *
cf_get_sym(byte *c, uint h0)
{
return cf_find_sym(new_config, c, h0) ?: cf_new_sym(c, h0);
}
/**
* cf_find_symbol - find a symbol by name
* @cfg: specificed config
@ -570,7 +549,18 @@ cf_get_sym(byte *c, uint h0)
struct symbol *
cf_find_symbol(struct config *cfg, byte *c)
{
return cf_find_sym(cfg, c, cf_hash(c));
struct symbol *s;
if (cfg->sym_hash.data &&
(s = HASH_FIND(cfg->sym_hash, SYM, c, 1)))
return s;
if (cfg->fallback &&
cfg->fallback->sym_hash.data &&
(s = HASH_FIND(cfg->fallback->sym_hash, SYM, c, 1)))
return s;
return NULL;
}
/**
@ -585,7 +575,7 @@ cf_find_symbol(struct config *cfg, byte *c)
struct symbol *
cf_get_symbol(byte *c)
{
return cf_get_sym(c, cf_hash(c));
return cf_find_symbol(new_config, c) ?: cf_new_symbol(c);
}
struct symbol *
@ -598,7 +588,7 @@ cf_default_name(char *template, int *counter)
for(;;)
{
bsprintf(buf, template, ++(*counter));
s = cf_get_sym(buf, cf_hash(buf));
s = cf_get_symbol(buf);
if (s->class == SYM_VOID)
return s;
if (!perc)
@ -629,7 +619,7 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
{
if (sym->scope == conf_this_scope)
cf_error("Symbol already defined");
sym = cf_new_sym(sym->name, cf_hash(sym->name));
sym = cf_new_symbol(sym->name);
}
sym->class = type;
sym->def = def;
@ -639,15 +629,11 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
static void
cf_lex_init_kh(void)
{
struct keyword *k;
HASH_INIT(kw_hash, &root_pool, KW_ORDER);
for(k=keyword_list; k->name; k++)
{
unsigned h = cf_hash(k->name) & (KW_HASH_SIZE-1);
k->next = kw_hash[h];
kw_hash[h] = k;
}
kw_hash_inited = 1;
struct keyword *k;
for (k=keyword_list; k->name; k++)
HASH_INSERT(kw_hash, KW, k);
}
/**
@ -661,7 +647,7 @@ cf_lex_init_kh(void)
void
cf_lex_init(int is_cli, struct config *c)
{
if (!kw_hash_inited)
if (!kw_hash.data)
cf_lex_init_kh();
ifs_head = ifs = push_ifs(NULL);
@ -720,24 +706,6 @@ cf_pop_scope(void)
ASSERT(conf_this_scope);
}
struct symbol *
cf_walk_symbols(struct config *cf, struct symbol *sym, int *pos)
{
for(;;)
{
if (!sym)
{
if (*pos >= SYM_HASH_SIZE)
return NULL;
sym = cf->sym_hash[(*pos)++];
}
else
sym = sym->next;
if (sym && sym->scope->active)
return sym;
}
}
/**
* cf_symbol_class_name - get name of a symbol class
* @sym: symbol

4
conf/conf.c
View file

@ -166,7 +166,7 @@ int
cli_parse(struct config *c)
{
int done = 0;
c->sym_fallback = config->sym_hash;
c->fallback = config;
new_config = c;
cfg_mem = c->mem;
if (setjmp(conf_jmpbuf))
@ -177,7 +177,7 @@ cli_parse(struct config *c)
done = 1;
cleanup:
c->sym_fallback = NULL;
c->fallback = NULL;
new_config = NULL;
cfg_mem = NULL;
return done;

12
conf/conf.h
View file

@ -11,6 +11,7 @@
#include "sysdep/config.h"
#include "lib/ip.h"
#include "lib/hash.h"
#include "lib/resource.h"
#include "sysdep/unix/timer.h"
@ -52,8 +53,8 @@ struct config {
char *err_file_name; /* File name containing error */
char *file_name; /* Name of main configuration file */
int file_fd; /* File descriptor of main configuration file */
struct symbol **sym_hash; /* Lexer: symbol hash table */
struct symbol **sym_fallback; /* Lexer: fallback symbol hash table */
HASH(struct symbol) sym_hash; /* Lexer: symbol hash table */
struct config *fallback; /* Link to regular config for CLI parsing */
int obstacle_count; /* Number of items blocking freeing of this config */
int shutdown; /* This is a pseudo-config for daemon shutdown */
bird_clock_t load_time; /* When we've got this configuration */
@ -114,6 +115,12 @@ struct symbol {
char name[1];
};
struct sym_scope {
struct sym_scope *next; /* Next on scope stack */
struct symbol *name; /* Name of this scope */
int active; /* Currently entered */
};
#define SYM_MAX_LEN 64
/* Remember to update cf_symbol_class_name() */
@ -155,7 +162,6 @@ struct symbol *cf_default_name(char *template, int *counter);
struct symbol *cf_define_symbol(struct symbol *symbol, int type, void *def);
void cf_push_scope(struct symbol *);
void cf_pop_scope(void);
struct symbol *cf_walk_symbols(struct config *cf, struct symbol *sym, int *pos);
char *cf_symbol_class_name(struct symbol *sym);
static inline int cf_symbol_is_constant(struct symbol *sym)

14
nest/cmds.c
View file

@ -46,20 +46,22 @@ cmd_show_status(void)
void
cmd_show_symbols(struct sym_show_data *sd)
{
int pos = 0;
struct symbol *sym = sd->sym;
if (sym)
cli_msg(1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
if (sd->sym)
cli_msg(1010, "%-8s\t%s", sd->sym->name, cf_symbol_class_name(sd->sym));
else
{
while (sym = cf_walk_symbols(config, sym, &pos))
HASH_WALK(config->sym_hash, next, sym)
{
if (!sym->scope->active)
continue;
if (sd->type && (sym->class != sd->type))
continue;
cli_msg(-1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
}
HASH_WALK_END;
cli_msg(0, "");
}
}