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Improve object destruction (bug #3286)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4747 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2005-01-10 05:46:25 +00:00
parent 8c85a8461c
commit e7cb975021
2 changed files with 138 additions and 156 deletions
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146
channels/chan_sip.c
View File

@@ -1111,66 +1111,44 @@ static void update_peer(struct sip_peer *p, int expiry)
realtime_update_peer(p->name, &p->addr, p->username, expiry); realtime_update_peer(p->name, &p->addr, p->username, expiry);
} }
static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int temponly); static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int realtime);
static struct sip_peer *realtime_peer(const char *peername, struct sockaddr_in *sin) static struct sip_peer *realtime_peer(const char *peername, struct sockaddr_in *sin)
{ {
struct ast_variable *var, *tmp=NULL;
char iabuf[80];
struct sip_peer *peer=NULL; struct sip_peer *peer=NULL;
time_t nowtime, regseconds; struct ast_variable *var;
int dynamic=0; struct ast_variable *tmp;
if (sin)
ast_inet_ntoa(iabuf, sizeof(iabuf), sin->sin_addr);
if (peername) if (peername)
var = ast_load_realtime("sipfriends", "name", peername, NULL); var = ast_load_realtime("sipfriends", "name", peername, NULL);
else else if (sin) {
char iabuf[80];
ast_inet_ntoa(iabuf, sizeof(iabuf), sin->sin_addr);
var = ast_load_realtime("sipfriends", "ipaddr", iabuf, NULL); var = ast_load_realtime("sipfriends", "ipaddr", iabuf, NULL);
if (var) { } else
/* Make sure it's not a user only... */ return NULL;
peer = build_peer(peername, var, 1);
if (peer) { if (!var)
/* Add some finishing touches, addresses, etc */ return NULL;
ast_set_flag(peer, SIP_REALTIME);
tmp = var; tmp = var;
while(tmp) { while(tmp) {
if (!strcasecmp(tmp->name, "type")) { if (strcasecmp(tmp->name, "type"))
if (strcasecmp(tmp->value, "friend") && continue;
strcasecmp(tmp->value, "peer")) {
/* Whoops, we weren't supposed to exist! */ if (!strcasecmp(tmp->value, "user")) {
sip_destroy_peer(peer); ast_destroy_realtime(var);
peer = NULL; return NULL;
break;
}
} else if (!strcasecmp(tmp->name, "regseconds")) {
if (sscanf(tmp->value, "%li", &regseconds) != 1)
regseconds = 0;
} else if (!strcasecmp(tmp->name, "ipaddr")) {
inet_aton(tmp->value, &(peer->addr.sin_addr));
} else if (!strcasecmp(tmp->name, "port")) {
peer->addr.sin_port = htons(atoi(tmp->value));
} else if (!strcasecmp(tmp->name, "host")) {
if (!strcasecmp(tmp->value, "dynamic"))
dynamic = 1;
} }
tmp = tmp->next; tmp = tmp->next;
} }
if (peer && dynamic) {
time(&nowtime); peer = build_peer(peername, var, 1);
if ((nowtime - regseconds) > 0) { if (peer)
memset(&peer->addr, 0, sizeof(peer->addr)); ast_set_flag(peer, SIP_REALTIME);
if (option_debug)
ast_log(LOG_DEBUG, "Bah, we're expired (%ld/%ld/%ld)!\n", nowtime - regseconds, regseconds, nowtime);
}
}
}
ast_destroy_realtime(var); ast_destroy_realtime(var);
}
if (peer) {
/* Destroy, so when our caller unrefs, it will disappear */
ASTOBJ_DESTROY(peer, sip_destroy_peer);
}
return peer; return peer;
} }
@@ -1214,43 +1192,39 @@ static void sip_destroy_user(struct sip_user *user)
free(user); free(user);
} }
static struct sip_user *build_user(const char *name, struct ast_variable *v); static struct sip_user *build_user(const char *name, struct ast_variable *v, int realtime);
static struct sip_user *realtime_user(const char *username) static struct sip_user *realtime_user(const char *username)
{ {
struct ast_variable *var; struct ast_variable *var;
struct ast_variable *tmp; struct ast_variable *tmp;
struct sip_user *user = NULL; struct sip_user *user = NULL;
var = ast_load_realtime("sipfriends", "name", username, NULL); var = ast_load_realtime("sipfriends", "name", username, NULL);
if (var) {
/* Make sure it's not a user only... */ if (!var)
user = build_user(username, var); return NULL;
tmp = var;
while (tmp) {
if (strcasecmp(tmp->name, "type"))
continue;
if (!strcasecmp(tmp->value, "peer")) {
ast_destroy_realtime(var);
return NULL;
}
tmp = tmp->next;
}
user = build_user(username, var, 1);
if (user) { if (user) {
/* Move counter from s to r... */ /* Move counter from s to r... */
suserobjs--; suserobjs--;
ruserobjs++; ruserobjs++;
/* Add some finishing touches, addresses, etc */ /* Add some finishing touches, addresses, etc */
ast_set_flag(user, SIP_REALTIME); ast_set_flag(user, SIP_REALTIME);
tmp = var;
while(tmp) {
if (!strcasecmp(tmp->name, "type")) {
if (strcasecmp(tmp->value, "friend") &&
strcasecmp(tmp->value, "user")) {
/* Whoops, we weren't supposed to exist! */
sip_destroy_user(user);
user = NULL;
break;
}
}
tmp = tmp->next;
}
} }
ast_destroy_realtime(var); ast_destroy_realtime(var);
}
if (user) {
/* Reference and destroy, so when our caller unrefs, we disappear */
ASTOBJ_REF(user);
ASTOBJ_DESTROY(user, sip_destroy_user);
}
return user; return user;
} }
@@ -8644,7 +8618,7 @@ static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask
} }
/*--- build_user: Initiate a SIP user structure from sip.conf ---*/ /*--- build_user: Initiate a SIP user structure from sip.conf ---*/
static struct sip_user *build_user(const char *name, struct ast_variable *v) static struct sip_user *build_user(const char *name, struct ast_variable *v, int realtime)
{ {
struct sip_user *user; struct sip_user *user;
int format; int format;
@@ -8778,15 +8752,16 @@ static struct sip_peer *temp_peer(char *name)
} }
/*--- build_peer: Build peer from config file ---*/ /*--- build_peer: Build peer from config file ---*/
static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int temponly) static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int realtime)
{ {
struct sip_peer *peer = NULL; struct sip_peer *peer = NULL;
struct ast_ha *oldha = NULL; struct ast_ha *oldha = NULL;
int maskfound=0; int maskfound=0;
int obproxyfound=0; int obproxyfound=0;
int found=0; int found=0;
time_t regseconds;
if (!temponly) if (!realtime)
/* Note we do NOT use find_peer here, to avoid realtime recursion */ /* Note we do NOT use find_peer here, to avoid realtime recursion */
peer = ASTOBJ_CONTAINER_FIND_UNLINK(&peerl, name); peer = ASTOBJ_CONTAINER_FIND_UNLINK(&peerl, name);
@@ -8797,7 +8772,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
peer = malloc(sizeof(struct sip_peer)); peer = malloc(sizeof(struct sip_peer));
if (peer) { if (peer) {
memset(peer, 0, sizeof(struct sip_peer)); memset(peer, 0, sizeof(struct sip_peer));
if (temponly) if (realtime)
rpeerobjs++; rpeerobjs++;
else else
speerobjs++; speerobjs++;
@@ -8838,7 +8813,12 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
continue; continue;
} }
if (!strcasecmp(v->name, "name")) if (realtime && !strcasecmp(v->name, "regseconds")) {
if (sscanf(v->value, "%li", &regseconds) != 1)
regseconds = 0;
} else if (realtime && !strcasecmp(v->name, "ipaddr")) {
inet_aton(v->value, &(peer->addr.sin_addr));
} else if (realtime && !strcasecmp(v->name, "name"))
strncpy(peer->name, v->value, sizeof(peer->name)-1); strncpy(peer->name, v->value, sizeof(peer->name)-1);
else if (!strcasecmp(v->name, "secret")) else if (!strcasecmp(v->name, "secret"))
strncpy(peer->secret, v->value, sizeof(peer->secret)-1); strncpy(peer->secret, v->value, sizeof(peer->secret)-1);
@@ -8880,7 +8860,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
ast_clear_flag(peer, SIP_DYNAMIC); ast_clear_flag(peer, SIP_DYNAMIC);
if (!obproxyfound || !strcasecmp(v->name, "outboundproxy")) { if (!obproxyfound || !strcasecmp(v->name, "outboundproxy")) {
if (ast_get_ip_or_srv(&peer->addr, v->value, "_sip._udp")) { if (ast_get_ip_or_srv(&peer->addr, v->value, "_sip._udp")) {
ASTOBJ_DESTROY(peer, sip_destroy_peer); ASTOBJ_UNREF(peer, sip_destroy_peer);
return NULL; return NULL;
} }
} }
@@ -8893,7 +8873,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
inet_aton("255.255.255.255", &peer->mask); inet_aton("255.255.255.255", &peer->mask);
} else if (!strcasecmp(v->name, "defaultip")) { } else if (!strcasecmp(v->name, "defaultip")) {
if (ast_get_ip(&peer->defaddr, v->value)) { if (ast_get_ip(&peer->defaddr, v->value)) {
ASTOBJ_DESTROY(peer, sip_destroy_peer); ASTOBJ_UNREF(peer, sip_destroy_peer);
return NULL; return NULL;
} }
} else if (!strcasecmp(v->name, "permit") || } else if (!strcasecmp(v->name, "permit") ||
@@ -8903,7 +8883,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
maskfound++; maskfound++;
inet_aton(v->value, &peer->mask); inet_aton(v->value, &peer->mask);
} else if (!strcasecmp(v->name, "port")) { } else if (!strcasecmp(v->name, "port")) {
if (ast_test_flag(peer, SIP_DYNAMIC)) if (!realtime && ast_test_flag(peer, SIP_DYNAMIC))
peer->defaddr.sin_port = htons(atoi(v->value)); peer->defaddr.sin_port = htons(atoi(v->value));
else else
peer->addr.sin_port = htons(atoi(v->value)); peer->addr.sin_port = htons(atoi(v->value));
@@ -8955,6 +8935,16 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
*/ */
v=v->next; v=v->next;
} }
if (realtime && ast_test_flag(peer, SIP_DYNAMIC)) {
time_t nowtime;
time(&nowtime);
if ((nowtime - regseconds) > 0) {
memset(&peer->addr, 0, sizeof(peer->addr));
if (option_debug)
ast_log(LOG_DEBUG, "Bah, we're expired (%ld/%ld/%ld)!\n", nowtime - regseconds, regseconds, nowtime);
}
}
ast_copy_flags(peer, &peerflags, mask.flags); ast_copy_flags(peer, &peerflags, mask.flags);
if (!found && ast_test_flag(peer, SIP_DYNAMIC)) if (!found && ast_test_flag(peer, SIP_DYNAMIC))
reg_source_db(peer); reg_source_db(peer);
@@ -9200,7 +9190,7 @@ static int reload_config(void)
utype = ast_variable_retrieve(cfg, cat, "type"); utype = ast_variable_retrieve(cfg, cat, "type");
if (utype) { if (utype) {
if (!strcasecmp(utype, "user") || !strcasecmp(utype, "friend")) { if (!strcasecmp(utype, "user") || !strcasecmp(utype, "friend")) {
user = build_user(cat, ast_variable_browse(cfg, cat)); user = build_user(cat, ast_variable_browse(cfg, cat), 0);
if (user) { if (user) {
ASTOBJ_CONTAINER_LINK(&userl,user); ASTOBJ_CONTAINER_LINK(&userl,user);
ASTOBJ_UNREF(user, sip_destroy_user); ASTOBJ_UNREF(user, sip_destroy_user);

28
include/asterisk/astobj.h
View File

@@ -32,8 +32,7 @@ extern "C" {
#define ASTOBJ_DEFAULT_BUCKETS 256 #define ASTOBJ_DEFAULT_BUCKETS 256
#define ASTOBJ_DEFAULT_HASH ast_strhash #define ASTOBJ_DEFAULT_HASH ast_strhash
#define ASTOBJ_FLAG_DELME (1 << 0) /* Object has been deleted, remove on last unref */ #define ASTOBJ_FLAG_MARKED (1 << 0) /* Object has been marked for future operation */
#define ASTOBJ_FLAG_MARKED (1 << 1) /* Object has been marked for possible deletion */
#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
#define __builtin_expect(exp, c) (exp) #define __builtin_expect(exp, c) (exp)
@@ -81,13 +80,17 @@ extern "C" {
#define ASTOBJ_UNREF(object,destructor) \ #define ASTOBJ_UNREF(object,destructor) \
do { \ do { \
int newcount = 0; \
ASTOBJ_WRLOCK(object); \ ASTOBJ_WRLOCK(object); \
if (__builtin_expect((object)->refcount, 1)) \ if (__builtin_expect((object)->refcount, 1)) \
(object)->refcount--; \ newcount = --((object)->refcount); \
else \ else \
ast_log(LOG_WARNING, "Unreferencing unreferenced (object)!\n"); \ ast_log(LOG_WARNING, "Unreferencing unreferenced (object)!\n"); \
ASTOBJ_UNLOCK(object); \ ASTOBJ_UNLOCK(object); \
ASTOBJ_DESTROY(object,destructor); \ if (newcount == 0) { \
ast_mutex_destroy(&(object)->_lock); \
destructor((object)); \
} \
(object) = NULL; \ (object) = NULL; \
} while(0) } while(0)
@@ -105,18 +108,6 @@ extern "C" {
ASTOBJ_UNLOCK(object); \ ASTOBJ_UNLOCK(object); \
} while(0) } while(0)
#define ASTOBJ_DESTROY(object,destructor) \
do { \
if (__builtin_expect((object)->refcount, 1)) { \
ASTOBJ_WRLOCK(object); \
(object)->objflags |= ASTOBJ_FLAG_DELME; \
ASTOBJ_UNLOCK(object); \
} else { \
ast_mutex_destroy(&(object)->_lock); \
destructor((object)); \
} \
} while(0)
#define ASTOBJ_INIT(object) \ #define ASTOBJ_INIT(object) \
do { \ do { \
ast_mutex_init(&(object)->_lock); \ ast_mutex_init(&(object)->_lock); \
@@ -190,7 +181,6 @@ extern "C" {
ASTOBJ_CONTAINER_WRLOCK(container); \ ASTOBJ_CONTAINER_WRLOCK(container); \
while((iterator = (container)->head)) { \ while((iterator = (container)->head)) { \
(container)->head = (iterator)->next[0]; \ (container)->head = (iterator)->next[0]; \
ASTOBJ_DESTROY(iterator,destructor); \
ASTOBJ_UNREF(iterator,destructor); \ ASTOBJ_UNREF(iterator,destructor); \
} \ } \
ASTOBJ_CONTAINER_UNLOCK(container); \ ASTOBJ_CONTAINER_UNLOCK(container); \
@@ -203,6 +193,7 @@ extern "C" {
ASTOBJ_CONTAINER_TRAVERSE(container, !found, do { \ ASTOBJ_CONTAINER_TRAVERSE(container, !found, do { \
if (!(strcasecmp(iterator->name, (namestr)))) { \ if (!(strcasecmp(iterator->name, (namestr)))) { \
found = iterator; \ found = iterator; \
found->next[0] = NULL; \
ASTOBJ_CONTAINER_WRLOCK(container); \ ASTOBJ_CONTAINER_WRLOCK(container); \
if (prev) \ if (prev) \
prev->next[0] = next; \ prev->next[0] = next; \
@@ -223,6 +214,7 @@ extern "C" {
ASTOBJ_RDLOCK(iterator); \ ASTOBJ_RDLOCK(iterator); \
if (!(comparefunc(iterator->field, (data)))) { \ if (!(comparefunc(iterator->field, (data)))) { \
found = iterator; \ found = iterator; \
found->next[0] = NULL; \
ASTOBJ_CONTAINER_WRLOCK(container); \ ASTOBJ_CONTAINER_WRLOCK(container); \
if (prev) \ if (prev) \
prev->next[0] = next; \ prev->next[0] = next; \
@@ -249,7 +241,7 @@ extern "C" {
(container)->head = next; \ (container)->head = next; \
ASTOBJ_CONTAINER_UNLOCK(container); \ ASTOBJ_CONTAINER_UNLOCK(container); \
ASTOBJ_UNLOCK(iterator); \ ASTOBJ_UNLOCK(iterator); \
ASTOBJ_DESTROY(iterator,destructor); \ ASTOBJ_UNREF(iterator,destructor); \
continue; \ continue; \
} \ } \
ASTOBJ_UNLOCK(iterator); \ ASTOBJ_UNLOCK(iterator); \