uint32_t msg_buffer_t::append(const void* data_, uint32_t size_)
{
uint32_t ret = 0;
if (!is_init_i()) //! yunjie: 第一次分配
{
if (-1 == init_buffer_i(size_))
{
//! yunjie: mem error
return 0;
}
}
else if (size_ > remain_free_tail_space_i()) //! yunjie: 尾部剩余的堆空间不足
{
//! yunjie: 判断头尾空闲内存的总和是否足够
if (remain_free_head_space_i() + remain_free_tail_space_i() >= size_)
{
//! yunjie: 将数据内存块对齐到头
marshal_i();
}
else
{
if (-1 == expand_i(size_ + m_heap_size))
{
//! yunjie: mem error or param error
return 0;
}
}
}
ret = append_i((char*)data_, size_);
return ret;
}
int msg_buffer_t::reserve(uint32_t size_)
{
int ret = 0;
if (!is_init_i()) //! yunjie: 第一次分配
{
ret = init_buffer_i(size_);
}
else
{
ret = expand_i(size_);
}
return ret;
}
void emit_icode( instruction t )
{
if(currInstruction == total_i)
expand_i();
instruction *p = instructions+currInstruction++;
p->opcode = t.opcode;
p->result = t.result;
p->arg1 = t.arg1;
p->arg2 = t.arg2;
p->srcLine = t.srcLine;
}
int msg_buffer_t::recv_to_buffer(fd_t fd_, int& recv_ret_)
{
if (!is_init_i()) //! yunjie: 第一次分配
{
if (-1 == init_buffer_i(MIN_MSG_BUFFER_SIZE))
{
//! yunjie: mem error
return -1;
}
}
//! yunjie: 被读取了一部分, 如果尾部没有空间就进行marshal
uint32_t remain_free_tail_space = remain_free_tail_space_i();
if (0 == remain_free_tail_space)
{
marshal_i();
if (0 == (remain_free_tail_space = remain_free_tail_space_i()))
{
return -1;
}
}
recv_ret_ = ::recv(fd_, write_ptr_i(), remain_free_tail_space, 0);
if (recv_ret_ < 0)
{
return 0;
}
m_data_size += recv_ret_;
if ((uint32_t)recv_ret_ == remain_free_tail_space)
{
//! yunjie: marshal and expand
marshal_i();
if (-1 == expand_i(m_heap_size << 1))
{
//! yunjie: mem error or param error
}
}
return 0;
}
