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r19072@catbus: nickm | 2008-03-26 13:50:24 -0400

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Add code to debug memory area size.  Use results of this code to set a couple of area sizes more sanely.


svn:r14201
This commit is contained in:
Nick Mathewson 2008-03-26 17:50:27 +00:00
parent 745f3c859a
commit e8cc756c13
3 changed files with 67 additions and 13 deletions
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16
src/common/memarea.c
View File

@ -197,6 +197,22 @@ memarea_strndup(memarea_t *area, const char *s, size_t n)
return result;
}
/** Set <b>allocated_out</b> to the number of bytes allocated in <b>area</b>,
* and <b>used_out</b> to the number of bytes currently used. */
void
memarea_get_stats(memarea_t *area, size_t *allocated_out, size_t *used_out)
{
size_t a = 0, u = 0;
memarea_chunk_t *chunk;
for (chunk = area->first; chunk; chunk = chunk->next_chunk) {
a += CHUNK_HEADER_SIZE + chunk->mem_size;
tor_assert(chunk->next_mem >= chunk->u.mem);
u += CHUNK_HEADER_SIZE + (chunk->next_mem - chunk->u.mem);
}
*allocated_out = a;
*used_out = u;
}
/** Assert that <b>area</b> is okay. */
void
memarea_assert_ok(memarea_t *area)

2
src/common/memarea.h
View File

@ -17,6 +17,8 @@ void *memarea_alloc_zero(memarea_t *area, size_t sz);
void *memarea_memdup(memarea_t *area, const void *s, size_t n);
char *memarea_strdup(memarea_t *area, const char *s);
char *memarea_strndup(memarea_t *area, const char *s, size_t n);
void memarea_get_stats(memarea_t *area,
size_t *allocated_out, size_t *used_out);
void memarea_assert_ok(memarea_t *area);
#endif

62
src/or/routerparse.c
View File

@ -446,6 +446,19 @@ static int check_signature_token(const char *digest,
static crypto_pk_env_t *find_dir_signing_key(const char *str, const char *eos);
static int tor_version_same_series(tor_version_t *a, tor_version_t *b);
#undef DEBUG_AREA_ALLOC
#ifdef DEBUG_AREA_ALLOC
#define DUMP_AREA(a,name) STMT_BEGIN \
size_t alloc=0, used=0; \
memarea_get_stats((a),&alloc,&used); \
log_debug(LD_MM, "Area for %s has %lu allocated; using %lu.", \
name, (unsigned long)alloc, (unsigned long)used); \
STMT_END
#else
#define DUMP_AREA(a,name) STMT_NIL
#endif
/** Set <b>digest</b> to the SHA-1 digest of the hash of the directory in
* <b>s</b>. Return 0 on success, -1 on failure.
*/
@ -715,8 +728,10 @@ router_parse_directory(const char *str)
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));
smartlist_free(tokens);
}
if (area)
if (area) {
DUMP_AREA(area, "v1 directory");
memarea_drop_all(area);
}
return r;
}
@ -778,8 +793,10 @@ router_parse_runningrouters(const char *str)
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));
smartlist_free(tokens);
}
if (area)
if (area) {
DUMP_AREA(area, "v1 running-routers");
memarea_drop_all(area);
}
return r;
}
@ -824,7 +841,10 @@ find_dir_signing_key(const char *str, const char *eos)
done:
if (tok) token_free(tok);
if (area) memarea_drop_all(area);
if (area) {
DUMP_AREA(area, "dir-signing-key token");
memarea_drop_all(area);
}
return key;
}
@ -1086,7 +1106,7 @@ router_parse_entry_from_string(const char *s, const char *end,
while (end > s+2 && *(end-1) == '\n' && *(end-2) == '\n')
--end;
area = memarea_new(8192);
area = memarea_new(4096);
tokens = smartlist_create();
if (prepend_annotations) {
if (tokenize_string(area,prepend_annotations,NULL,tokens,
@ -1367,8 +1387,10 @@ router_parse_entry_from_string(const char *s, const char *end,
if (exit_policy_tokens) {
smartlist_free(exit_policy_tokens);
}
if (area)
if (area) {
DUMP_AREA(area, "routerinfo");
memarea_drop_all(area);
}
return router;
}
@ -1487,8 +1509,10 @@ extrainfo_parse_entry_from_string(const char *s, const char *end,
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));
smartlist_free(tokens);
}
if (area)
if (area) {
DUMP_AREA(area, "extrainfo");
memarea_drop_all(area);
}
return extrainfo;
}
@ -1635,8 +1659,10 @@ authority_cert_parse_from_string(const char *s, const char **end_of_string)
err:
authority_cert_free(cert);
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));
if (area)
if (area) {
DUMP_AREA(area, "authority cert");
memarea_drop_all(area);
}
smartlist_free(tokens);
return NULL;
}
@ -1824,8 +1850,10 @@ routerstatus_parse_entry_from_string(memarea_t *area,
done:
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));
smartlist_clear(tokens);
if (area)
if (area) {
DUMP_AREA(area, "routerstatus entry");
memarea_clear(area);
}
*s = eos;
return rs;
@ -2017,8 +2045,10 @@ networkstatus_v2_parse_from_string(const char *s)
smartlist_free(tokens);
SMARTLIST_FOREACH(footer_tokens, directory_token_t *, t, token_free(t));
smartlist_free(footer_tokens);
if (area)
if (area) {
DUMP_AREA(area, "v2 networkstatus");
memarea_drop_all(area);
}
return ns;
}
@ -2392,8 +2422,10 @@ networkstatus_parse_vote_from_string(const char *s, const char **eos_out,
SMARTLIST_FOREACH(footer_tokens, directory_token_t *, t, token_free(t));
smartlist_free(footer_tokens);
}
if (area)
if (area) {
DUMP_AREA(area, "v3 networkstatus");
memarea_drop_all(area);
}
if (rs_area)
memarea_drop_all(rs_area);
@ -2506,8 +2538,10 @@ networkstatus_parse_detached_signatures(const char *s, const char *eos)
done:
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_free(t));
smartlist_free(tokens);
if (area)
if (area) {
DUMP_AREA(area, "detached signatures");
memarea_drop_all(area);
}
return sigs;
}
@ -2541,7 +2575,7 @@ router_parse_addr_policy_item_from_string(const char *s, int assume_action)
}
eos = cp + strlen(cp);
area = memarea_new(512);
area = memarea_new(128);
tok = get_next_token(area, &cp, eos, routerdesc_token_table);
if (tok->tp == _ERR) {
log_warn(LD_DIR, "Error reading address policy: %s", tok->error);
@ -2559,8 +2593,10 @@ router_parse_addr_policy_item_from_string(const char *s, int assume_action)
r = NULL;
done:
token_free(tok);
if (area)
if (area) {
DUMP_AREA(area, "policy item");
memarea_drop_all(area);
}
return r;
}