int ngx_shmap_inc_double(ngx_shm_zone_t* zone, ngx_str_t* key,double d,uint32_t exptime,double* ret)
{
ngx_int_t rc = 0;
ngx_str_t data = ngx_null_string;
assert(zone != NULL);
assert(key != NULL);
assert(ret != NULL);
uint8_t value_type = VT_DOUBLE;
rc = ngx_shmap_get(zone, key, &data, &value_type, NULL,NULL);
if(rc == 0){
if(value_type != VT_DOUBLE){
//NLOG_ERROR("key [%V] value_type [%d] invalid!",key, value_type);
return -1;
}
double* p = (double*)data.data;
//要改成原子操作
*ret = (*p += d);
}else{
//不存在，插入新的
ngx_str_set_double(&data, &d);
rc =ngx_shmap_set(zone, key, &data, value_type, exptime,0);
if(rc == 0){
*ret = d;
}
}
return rc;
}
void
ngx_str_handler_set_double(ngx_str_t* key, double* value) {
ngx_str_set_double(key,value);
}
