// 递增分配id进行hash，并返回匹配的socket
static int
reserve_id(struct socket_server *ss) {
int i;
for (i=0;i<MAX_SOCKET;i++) {
// 递增
int id = ATOM_INC(&(ss->alloc_id));
if (id < 0) {
// 回绕
id = ATOM_AND(&(ss->alloc_id), 0x7fffffff);
}
// 哈希匹配
struct socket *s = &ss->slot[HASH_ID(id)];
if (s->type == SOCKET_TYPE_INVALID) {
// 如果是初始类型，修改为保留类型
if (ATOM_CAS(&s->type, SOCKET_TYPE_INVALID, SOCKET_TYPE_RESERVE)) {
s->id = id;
s->fd = -1;
return id;
} else {
// 否则，重试
// retry
--i;
}
}
}
return -1;
}
void
skynet_monitor_trigger(struct skynet_monitor *sm, uint32_t source, uint32_t destination) {
// 在发送消息前, 记录一次状态
sm->source = source;
sm->destination = destination;
ATOM_INC(&sm->version);
}
inline static void
update_xmalloc_stat_alloc(uint32_t handle, size_t __n) {
ATOM_ADD(&_used_memory, __n);
ATOM_INC(&_memory_block);
ssize_t* allocated = get_allocated_field(handle);
if(allocated) {
ATOM_ADD(allocated, __n);
}
}
