void on_process_packet(struct connection *c,rpacket_t r)
{
uint32_t coro_id = rpacket_read_uint32(r);
const char *function_name = rpacket_read_string(r);
int32_t arg1 = rpacket_read_uint32(r);
int32_t arg2 = rpacket_read_uint32(r);
uint32_t i = 0;
wpacket_t w = wpacket_create(SINGLE_THREAD,wpacket_allocator,64,0);
wpacket_write_uint32(w,coro_id);
if(strcmp(function_name,"sum") == 0)
wpacket_write_uint32(w,arg1+arg2);
else
wpacket_write_uint32(w,arg1*arg2);
assert(w);
connection_send(c,w,NULL);
rpacket_destroy(&r);
}
const void* rpacket_read_binary(rpacket_t r,uint32_t *len)
{
void *addr = 0;
uint32_t size = 0;
if(r->raw)
return rpacket_raw_read_binary(r,len);
size = rpacket_read_uint32(r);
*len = size;
if(!r->data_remain || r->data_remain < size)
return addr;
if(r->readbuf->size - r->rpos >= size)
{
addr = &r->readbuf->buf[r->rpos];
r->rpos += size;
r->data_remain -= size;
if(r->rpos >= r->readbuf->size && r->data_remain)
{
//当前buffer数据已经被读完,切换到下一个buffer
r->rpos = 0;
r->readbuf = buffer_acquire(r->readbuf,r->readbuf->next);
}
}
else
{
//数据跨越了buffer边界,创建binbuf,将数据拷贝到binbuf中
if(!r->binbuf)
{
r->binbufpos = 0;
r->binbuf = buffer_create_and_acquire(r->mt,NULL,r->len);
}
addr = r->binbuf->buf + r->binbufpos;
while(size)
{
uint32_t copy_size = r->readbuf->size - r->rpos;
copy_size = copy_size >= size ? size:copy_size;
memcpy(r->binbuf->buf + r->binbufpos,r->readbuf->buf + r->rpos,copy_size);
size -= copy_size;
r->rpos += copy_size;
r->data_remain -= copy_size;
r->binbufpos += copy_size;
if(r->rpos >= r->readbuf->size && r->data_remain)
{
//当前buffer数据已经被读完,切换到下一个buffer
r->rpos = 0;
r->readbuf = buffer_acquire(r->readbuf,r->readbuf->next);
}
}
}
return addr;
}
