void file_cache_free(FILE_CACHE *cache)
{
BUFFER *buffer;
acl_htable_delete(__cache_table, cache->path, NULL);
while (1) {
buffer = (BUFFER*) acl_fifo_pop(cache->fifo);
if (buffer == NULL)
break;
acl_myfree(buffer->buf);
acl_myfree(buffer);
}
acl_fifo_free(cache->fifo, NULL);
acl_myfree(cache);
}
int acl_xml_node_delete(ACL_XML_NODE *node)
{
ACL_RING *next;
ACL_XML_NODE *node_next;
int n = 1;
while ((next = acl_ring_pop_head(&node->children)) != NULL) {
node_next = acl_ring_to_appl(next, ACL_XML_NODE, node);
n += acl_xml_node_delete(node_next);
}
node->xml->node_cnt--;
if (node->id != NULL)
acl_htable_delete(node->xml->id_table, STR(node->id), NULL);
if (node->xml->node_cache &&
acl_array_size(node->xml->node_cache) < node->xml->max_cache)
{
node->xml->node_cache->push_back(node->xml->node_cache, node);
acl_ring_detach(&node->node);
} else
acl_xml_node_free(node);
return (n);
}
void service_ctx_free(SERVICE_CTX *ctx)
{
acl_htable_delete(ctx->service->table, ctx->key, NULL);
acl_myfree(ctx);
}
/* DNS查询结果之后的回调函数 */
static void thrpool_nslookup_complete(const DNS_CTX *dns_ctx)
{
const char *myname = "thrpool_nslookup_complte";
SERVICE *service = (SERVICE *) dns_ctx->context;
DNS_RING *list;
ACL_RING *ring_ptr;
CLIENT_ENTRY *entry;
time_t inter, now;
list = (DNS_RING *) acl_htable_find(service->dns_table,
dns_ctx->domain_key);
if (list == NULL) {
acl_msg_warn(NULL, "%s: domain(%s) not found maybe handled",
myname, dns_ctx->domain_key);
return;
}
time(&now);
inter = now - dns_ctx->begin;
/* 如果查询时间过长，则给出警告信息 */
if (inter >= 5)
acl_msg_warn("%s(%d): dns search time=%d, domain(%s)",
myname, __LINE__, time(NULL) - dns_ctx->begin,
dns_ctx->domain_key);
while (1) {
ring_ptr = acl_ring_pop_head(&list->ring);
if (ring_ptr == NULL)
break;
list->nrefer--;
entry = ACL_RING_TO_APPL(ring_ptr, CLIENT_ENTRY, dns_entry);
entry->tm.dns_lookup = now - entry->tm.stamp;
entry->tm.stamp = now;
if (dns_ctx->ip_cnt <= 0) {
acl_msg_error("%s(%d): dns not found domain(%s)",
myname, __LINE__, dns_ctx->domain_key);
if (entry->client == NULL)
acl_msg_fatal("%s(%d): client null",
__FILE__, __LINE__);
if (entry->dns_errmsg) {
/* XXX: 因为此处可能会有两处关闭 client 流的地方:
* acl_aio_writen 及 forward_complete，为防止重复
* 关闭造成的内存访问非法，需要 * 在第一个可能关闭
* 的函数(acl_aio_writen)调用前提升 client 流的
* 引用值，并且在该函数返回后再恢复引用值
*/
acl_aio_refer(entry->client);
acl_aio_writen(entry->client, entry->dns_errmsg,
(int) strlen(entry->dns_errmsg));
/* 恢复refer值 */
acl_aio_unrefer(entry->client);
}
entry->nslookup_notify_fn(entry, NSLOOKUP_ERR);
continue;
}
if (acl_do_debug(20, 2)) {
int i;
for (i = 0; i < dns_ctx->ip_cnt; i++)
acl_msg_info("%s(%d): domain(%s), ip%d(%s)",
myname, __LINE__, dns_ctx->domain_key,
i, dns_ctx->ip[i]);
}
/* 将查得的所有DNS结果都拷贝至请求对象中 */
memcpy(&entry->dns_ctx, dns_ctx, sizeof(entry->dns_ctx));
/* 下面注释部分被打开，便可以测试连接重试功能:)-- zsx, 2008.2.28
* strcpy(proxy_entry->dns_ctx.ip[1], proxy_entry->dns_ctx.ip[0]);
* strcpy(proxy_entry->dns_ctx.ip[0], "127.0.0.1");
* if (proxy_entry->dns_ctx.ip_cnt < 2)
* proxy_entry->dns_ctx.ip_cnt = 2;
*/
entry->ip_idx = 0;
entry->nslookup_notify_fn(entry, NSLOOKUP_OK);
}
acl_htable_delete(service->dns_table, dns_ctx->domain_key, NULL);
if (list->nrefer <= 0)
acl_myfree(list);
else
acl_msg_fatal("%s(%d): list's nrefer=%d",
myname, __LINE__, list->nrefer);
}
