mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-08-06 02:46:26 +00:00
lib/cli: reduce strcmp in CLI hot paths
Er, no idea how anyone could ever have thought that it would be a good idea to have a zillion of strcmp() calls in the CLI's active paths, just to compare against things like "A.B.C.D". Reduces 40k prefix list load time from 1.65s to 1.23s (1.34:1). Acked-by: Paul Jakma <paul@jakma.org> [v2: killed CMDS_* macros] Signed-off-by: David Lamparter <equinox@opensourcerouting.org> (cherry picked from commit 10bac80195cf5a781da6e4415e6580fd7080f734)
This commit is contained in:
David Lamparter
Donald Sharp
parent
c0d8db4d9e
commit
c117e02796
284
lib/command.c
284
lib/command.c
@ -507,6 +507,25 @@ format_parser_read_word(struct format_parser_state *state)
|
||||
|
||||
token = XCALLOC(MTYPE_CMD_TOKENS, sizeof(*token));
|
||||
token->type = TOKEN_TERMINAL;
|
||||
if (cmd[0] == '[')
|
||||
token->terminal = TERMINAL_OPTION;
|
||||
else if ((cmd[0] >= 'A' && cmd[0] <= 'Z') || (cmd[0] == '<'))
|
||||
token->terminal = TERMINAL_VARIABLE;
|
||||
else if (cmd[0] == '.')
|
||||
token->terminal = TERMINAL_VARARG;
|
||||
else if (cmd[0] == '<')
|
||||
token->terminal = TERMINAL_RANGE;
|
||||
else if (strcmp (cmd, "A.B.C.D") == 0)
|
||||
token->terminal = TERMINAL_IPV4;
|
||||
else if (strcmp (cmd, "A.B.C.D/M") == 0)
|
||||
token->terminal = TERMINAL_IPV4_PREFIX;
|
||||
else if (strcmp (cmd, "X:X::X:X") == 0)
|
||||
token->terminal = TERMINAL_IPV6;
|
||||
else if (strcmp (cmd, "X:X::X:X/M") == 0)
|
||||
token->terminal = TERMINAL_IPV6_PREFIX;
|
||||
else
|
||||
token->terminal = TERMINAL_LITERAL;
|
||||
|
||||
token->cmd = cmd;
|
||||
token->desc = format_parser_desc_str(state);
|
||||
vector_set(state->curvect, token);
|
||||
@ -1173,59 +1192,61 @@ cmd_word_match(struct cmd_token *token,
|
||||
if (!word)
|
||||
return no_match;
|
||||
|
||||
if (CMD_VARARG(str))
|
||||
switch (token->terminal)
|
||||
{
|
||||
return vararg_match;
|
||||
}
|
||||
else if (CMD_RANGE(str))
|
||||
{
|
||||
if (cmd_range_match(str, word))
|
||||
return range_match;
|
||||
}
|
||||
#ifdef HAVE_IPV6
|
||||
else if (CMD_IPV6(str))
|
||||
{
|
||||
match_type = cmd_ipv6_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
case TERMINAL_VARARG:
|
||||
return vararg_match;
|
||||
|
||||
case TERMINAL_RANGE:
|
||||
if (cmd_range_match(str, word))
|
||||
return range_match;
|
||||
break;
|
||||
|
||||
case TERMINAL_IPV6:
|
||||
match_type = cmd_ipv6_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv6_match;
|
||||
}
|
||||
else if (CMD_IPV6_PREFIX(str))
|
||||
{
|
||||
match_type = cmd_ipv6_prefix_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv6_prefix_match;
|
||||
}
|
||||
#endif /* HAVE_IPV6 */
|
||||
else if (CMD_IPV4(str))
|
||||
{
|
||||
match_type = cmd_ipv4_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv4_match;
|
||||
}
|
||||
else if (CMD_IPV4_PREFIX(str))
|
||||
{
|
||||
match_type = cmd_ipv4_prefix_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv4_prefix_match;
|
||||
}
|
||||
else if (CMD_OPTION(str) || CMD_VARIABLE(str))
|
||||
{
|
||||
return extend_match;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (filter == FILTER_RELAXED && !strncmp(str, word, strlen(word)))
|
||||
{
|
||||
if (!strcmp(str, word))
|
||||
return exact_match;
|
||||
return partly_match;
|
||||
}
|
||||
if (filter == FILTER_STRICT && !strcmp(str, word))
|
||||
return exact_match;
|
||||
return ipv6_match;
|
||||
break;
|
||||
|
||||
case TERMINAL_IPV6_PREFIX:
|
||||
match_type = cmd_ipv6_prefix_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv6_prefix_match;
|
||||
break;
|
||||
|
||||
case TERMINAL_IPV4:
|
||||
match_type = cmd_ipv4_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv4_match;
|
||||
break;
|
||||
|
||||
case TERMINAL_IPV4_PREFIX:
|
||||
match_type = cmd_ipv4_prefix_match(word);
|
||||
if ((filter == FILTER_RELAXED && match_type != no_match)
|
||||
|| (filter == FILTER_STRICT && match_type == exact_match))
|
||||
return ipv4_prefix_match;
|
||||
break;
|
||||
|
||||
case TERMINAL_OPTION:
|
||||
case TERMINAL_VARIABLE:
|
||||
return extend_match;
|
||||
|
||||
case TERMINAL_LITERAL:
|
||||
if (filter == FILTER_RELAXED && !strncmp(str, word, strlen(word)))
|
||||
{
|
||||
if (!strcmp(str, word))
|
||||
return exact_match;
|
||||
return partly_match;
|
||||
}
|
||||
if (filter == FILTER_STRICT && !strcmp(str, word))
|
||||
return exact_match;
|
||||
break;
|
||||
|
||||
default:
|
||||
assert (0);
|
||||
}
|
||||
|
||||
return no_match;
|
||||
@ -1309,7 +1330,7 @@ cmd_matcher_match_terminal(struct cmd_matcher *matcher,
|
||||
|
||||
if (!cmd_matcher_words_left(matcher))
|
||||
{
|
||||
if (CMD_OPTION(token->cmd))
|
||||
if (token->terminal == TERMINAL_OPTION)
|
||||
return MATCHER_OK; /* missing optional args are NOT pushed as NULL */
|
||||
else
|
||||
return MATCHER_INCOMPLETE;
|
||||
@ -1322,9 +1343,9 @@ cmd_matcher_match_terminal(struct cmd_matcher *matcher,
|
||||
|
||||
/* We have to record the input word as argument if it matched
|
||||
* against a variable. */
|
||||
if (CMD_VARARG(token->cmd)
|
||||
|| CMD_VARIABLE(token->cmd)
|
||||
|| CMD_OPTION(token->cmd))
|
||||
if (token->terminal == TERMINAL_VARARG
|
||||
|| token->terminal == TERMINAL_VARIABLE
|
||||
|| token->terminal == TERMINAL_OPTION)
|
||||
{
|
||||
if (push_argument(argc, argv, word))
|
||||
return MATCHER_EXCEED_ARGC_MAX;
|
||||
@ -1335,7 +1356,7 @@ cmd_matcher_match_terminal(struct cmd_matcher *matcher,
|
||||
matcher->word_index++;
|
||||
|
||||
/* A vararg token should consume all left over words as arguments */
|
||||
if (CMD_VARARG(token->cmd))
|
||||
if (token->terminal == TERMINAL_VARARG)
|
||||
while (cmd_matcher_words_left(matcher))
|
||||
{
|
||||
word = cmd_matcher_get_word(matcher);
|
||||
@ -1566,9 +1587,9 @@ cmd_matcher_build_keyword_args(struct cmd_matcher *matcher,
|
||||
{
|
||||
word_token = vector_slot(keyword_vector, j);
|
||||
if ((word_token->type == TOKEN_TERMINAL
|
||||
&& (CMD_VARARG(word_token->cmd)
|
||||
|| CMD_VARIABLE(word_token->cmd)
|
||||
|| CMD_OPTION(word_token->cmd)))
|
||||
&& (word_token->terminal == TERMINAL_VARARG
|
||||
|| word_token->terminal == TERMINAL_VARIABLE
|
||||
|| word_token->terminal == TERMINAL_OPTION))
|
||||
|| word_token->type == TOKEN_MULTIPLE)
|
||||
{
|
||||
if (push_argument(argc, argv, NULL))
|
||||
@ -1854,12 +1875,14 @@ is_cmd_ambiguous (vector cmd_vector,
|
||||
switch (type)
|
||||
{
|
||||
case exact_match:
|
||||
if (!(CMD_OPTION (str) || CMD_VARIABLE (str))
|
||||
if (!(cmd_token->terminal == TERMINAL_OPTION
|
||||
|| cmd_token->terminal == TERMINAL_VARIABLE)
|
||||
&& strcmp (command, str) == 0)
|
||||
match++;
|
||||
break;
|
||||
case partly_match:
|
||||
if (!(CMD_OPTION (str) || CMD_VARIABLE (str))
|
||||
if (!(cmd_token->terminal == TERMINAL_OPTION
|
||||
|| cmd_token->terminal == TERMINAL_VARIABLE)
|
||||
&& strncmp (command, str, strlen (command)) == 0)
|
||||
{
|
||||
if (matched && strcmp (matched, str) != 0)
|
||||
@ -1881,7 +1904,7 @@ is_cmd_ambiguous (vector cmd_vector,
|
||||
break;
|
||||
#ifdef HAVE_IPV6
|
||||
case ipv6_match:
|
||||
if (CMD_IPV6 (str))
|
||||
if (cmd_token->terminal == TERMINAL_IPV6)
|
||||
match++;
|
||||
break;
|
||||
case ipv6_prefix_match:
|
||||
@ -1895,7 +1918,7 @@ is_cmd_ambiguous (vector cmd_vector,
|
||||
break;
|
||||
#endif /* HAVE_IPV6 */
|
||||
case ipv4_match:
|
||||
if (CMD_IPV4 (str))
|
||||
if (cmd_token->terminal == TERMINAL_IPV4)
|
||||
match++;
|
||||
break;
|
||||
case ipv4_prefix_match:
|
||||
@ -1908,7 +1931,8 @@ is_cmd_ambiguous (vector cmd_vector,
|
||||
}
|
||||
break;
|
||||
case extend_match:
|
||||
if (CMD_OPTION (str) || CMD_VARIABLE (str))
|
||||
if (cmd_token->terminal == TERMINAL_OPTION
|
||||
|| cmd_token->terminal == TERMINAL_VARIABLE)
|
||||
match++;
|
||||
break;
|
||||
case no_match:
|
||||
@ -1924,12 +1948,23 @@ is_cmd_ambiguous (vector cmd_vector,
|
||||
|
||||
/* If src matches dst return dst string, otherwise return NULL */
|
||||
static const char *
|
||||
cmd_entry_function (const char *src, const char *dst)
|
||||
cmd_entry_function (const char *src, struct cmd_token *token)
|
||||
{
|
||||
const char *dst = token->cmd;
|
||||
|
||||
/* Skip variable arguments. */
|
||||
if (CMD_OPTION (dst) || CMD_VARIABLE (dst) || CMD_VARARG (dst) ||
|
||||
CMD_IPV4 (dst) || CMD_IPV4_PREFIX (dst) || CMD_RANGE (dst))
|
||||
return NULL;
|
||||
switch (token->terminal)
|
||||
{
|
||||
case TERMINAL_OPTION:
|
||||
case TERMINAL_VARIABLE:
|
||||
case TERMINAL_VARARG:
|
||||
case TERMINAL_IPV4:
|
||||
case TERMINAL_IPV4_PREFIX:
|
||||
case TERMINAL_RANGE:
|
||||
return NULL;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* In case of 'command \t', given src is NULL string. */
|
||||
if (src == NULL)
|
||||
@ -1946,65 +1981,63 @@ cmd_entry_function (const char *src, const char *dst)
|
||||
/* This version will return the dst string always if it is
|
||||
CMD_VARIABLE for '?' key processing */
|
||||
static const char *
|
||||
cmd_entry_function_desc (const char *src, const char *dst)
|
||||
cmd_entry_function_desc (const char *src, struct cmd_token *token)
|
||||
{
|
||||
if (CMD_VARARG (dst))
|
||||
return dst;
|
||||
const char *dst = token->cmd;
|
||||
|
||||
if (CMD_RANGE (dst))
|
||||
switch (token->terminal)
|
||||
{
|
||||
if (cmd_range_match (dst, src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
case TERMINAL_VARARG:
|
||||
return dst;
|
||||
|
||||
case TERMINAL_RANGE:
|
||||
if (cmd_range_match (dst, src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
case TERMINAL_IPV6:
|
||||
if (cmd_ipv6_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
case TERMINAL_IPV6_PREFIX:
|
||||
if (cmd_ipv6_prefix_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
case TERMINAL_IPV4:
|
||||
if (cmd_ipv4_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
case TERMINAL_IPV4_PREFIX:
|
||||
if (cmd_ipv4_prefix_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
/* Optional or variable commands always match on '?' */
|
||||
case TERMINAL_OPTION:
|
||||
case TERMINAL_VARIABLE:
|
||||
return dst;
|
||||
|
||||
case TERMINAL_LITERAL:
|
||||
/* In case of 'command \t', given src is NULL string. */
|
||||
if (src == NULL)
|
||||
return dst;
|
||||
|
||||
if (strncmp (src, dst, strlen (src)) == 0)
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
|
||||
#ifdef HAVE_IPV6
|
||||
if (CMD_IPV6 (dst))
|
||||
{
|
||||
if (cmd_ipv6_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (CMD_IPV6_PREFIX (dst))
|
||||
{
|
||||
if (cmd_ipv6_prefix_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
#endif /* HAVE_IPV6 */
|
||||
|
||||
if (CMD_IPV4 (dst))
|
||||
{
|
||||
if (cmd_ipv4_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (CMD_IPV4_PREFIX (dst))
|
||||
{
|
||||
if (cmd_ipv4_prefix_match (src))
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Optional or variable commands always match on '?' */
|
||||
if (CMD_OPTION (dst) || CMD_VARIABLE (dst))
|
||||
return dst;
|
||||
|
||||
/* In case of 'command \t', given src is NULL string. */
|
||||
if (src == NULL)
|
||||
return dst;
|
||||
|
||||
if (strncmp (src, dst, strlen (src)) == 0)
|
||||
return dst;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -2223,7 +2256,7 @@ cmd_describe_command_real (vector vline, struct vty *vty, int *status)
|
||||
struct cmd_token *token = vector_slot(match_vector, j);
|
||||
const char *string;
|
||||
|
||||
string = cmd_entry_function_desc(command, token->cmd);
|
||||
string = cmd_entry_function_desc(command, token);
|
||||
if (string && desc_unique_string(matchvec, string))
|
||||
vector_set(matchvec, token);
|
||||
}
|
||||
@ -2436,7 +2469,7 @@ cmd_complete_command_real (vector vline, struct vty *vty, int *status, int islib
|
||||
if ((token = vector_slot (match_vector, j)))
|
||||
{
|
||||
string = cmd_entry_function (vector_slot (vline, index),
|
||||
token->cmd);
|
||||
token);
|
||||
if (string && cmd_unique_string (matchvec, string))
|
||||
vector_set (matchvec, (islib != 0 ?
|
||||
XSTRDUP (MTYPE_TMP, string) :
|
||||
@ -4135,6 +4168,7 @@ cmd_init (int terminal)
|
||||
{
|
||||
command_cr = XSTRDUP(MTYPE_CMD_TOKENS, "<cr>");
|
||||
token_cr.type = TOKEN_TERMINAL;
|
||||
token_cr.terminal = TERMINAL_LITERAL;
|
||||
token_cr.cmd = command_cr;
|
||||
token_cr.desc = XSTRDUP(MTYPE_CMD_TOKENS, "");
|
||||
|
||||
|
||||
@ -153,10 +153,25 @@ enum cmd_token_type
|
||||
TOKEN_KEYWORD,
|
||||
};
|
||||
|
||||
enum cmd_terminal_type
|
||||
{
|
||||
_TERMINAL_BUG = 0,
|
||||
TERMINAL_LITERAL,
|
||||
TERMINAL_OPTION,
|
||||
TERMINAL_VARIABLE,
|
||||
TERMINAL_VARARG,
|
||||
TERMINAL_RANGE,
|
||||
TERMINAL_IPV4,
|
||||
TERMINAL_IPV4_PREFIX,
|
||||
TERMINAL_IPV6,
|
||||
TERMINAL_IPV6_PREFIX,
|
||||
};
|
||||
|
||||
/* Command description structure. */
|
||||
struct cmd_token
|
||||
{
|
||||
enum cmd_token_type type;
|
||||
enum cmd_terminal_type terminal;
|
||||
|
||||
/* Used for type == MULTIPLE */
|
||||
vector multiple; /* vector of cmd_token, type == FINAL */
|
||||
@ -455,16 +470,6 @@ struct cmd_token
|
||||
#define CMD_CREATE_STR_HELPER(s) #s
|
||||
#define CMD_RANGE_STR(a,s) "<" CMD_CREATE_STR(a) "-" CMD_CREATE_STR(s) ">"
|
||||
|
||||
#define CMD_OPTION(S) ((S[0]) == '[')
|
||||
#define CMD_VARIABLE(S) (((S[0]) >= 'A' && (S[0]) <= 'Z') || ((S[0]) == '<'))
|
||||
#define CMD_VARARG(S) ((S[0]) == '.')
|
||||
#define CMD_RANGE(S) ((S[0] == '<'))
|
||||
|
||||
#define CMD_IPV4(S) ((strcmp ((S), "A.B.C.D") == 0))
|
||||
#define CMD_IPV4_PREFIX(S) ((strcmp ((S), "A.B.C.D/M") == 0))
|
||||
#define CMD_IPV6(S) ((strcmp ((S), "X:X::X:X") == 0))
|
||||
#define CMD_IPV6_PREFIX(S) ((strcmp ((S), "X:X::X:X/M") == 0))
|
||||
|
||||
/* Common descriptions. */
|
||||
#define SHOW_STR "Show running system information\n"
|
||||
#define IP_STR "IP information\n"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user