static inline void prepare_recv(datagram *d)
{
bytebuffer *buf;
int32_t i = 0;
uint32_t free_buffer_size,recv_size,pos;
if(!d->next_recv_buf){
d->next_recv_buf = bytebuffer_new(d->recv_bufsize);
d->next_recv_pos = 0;
}
buf = d->next_recv_buf;
pos = d->next_recv_pos;
recv_size = d->recv_bufsize;
do
{
free_buffer_size = buf->cap - pos;
free_buffer_size = recv_size > free_buffer_size ? free_buffer_size:recv_size;
d->wrecvbuf[i].iov_len = free_buffer_size;
d->wrecvbuf[i].iov_base = buf->data + pos;
recv_size -= free_buffer_size;
pos += free_buffer_size;
if(recv_size && pos >= buf->cap)
{
pos = 0;
if(!buf->next)
buf->next = bytebuffer_new(d->recv_bufsize);
buf = buf->next;
}
++i;
}while(recv_size);
d->recv_overlap.iovec_count = i;
d->recv_overlap.iovec = d->wrecvbuf;
}
const void*
rpacket_read_binary(rpacket *r,uint16_t *len)
{
void *addr = 0;
uint16_t size = rpacket_read_uint16(r);
if(size == 0 || size > r->data_remain) return NULL;
if(len) *len = size;
if(reader_check_size(&r->reader,size)){
addr = &r->reader.cur->data[r->reader.pos];
r->reader.pos += size;
r->data_remain -= size;
if(r->data_remain && r->reader.pos >= r->reader.cur->size)
buffer_reader_init(&r->reader,r->reader.cur->next,0);
}else{
if(!r->binbuf){
r->binbuf = bytebuffer_new(((packet*)r)->len_packet);
r->binpos = 0;
}
addr = r->binbuf->data + r->binpos;
while(size)
{
uint32_t copy_size = r->reader.cur->size - r->reader.pos;
copy_size = copy_size >= size ? size:copy_size;
memcpy(r->binbuf->data + r->binpos,r->reader.cur->data + r->reader.pos,copy_size);
size -= copy_size;
r->reader.pos += copy_size;
r->data_remain -= copy_size;
r->binpos += copy_size;
if(r->data_remain && r->reader.pos >= r->reader.cur->size)
buffer_reader_init(&r->reader,r->reader.cur->next,0);
}
}
return addr;
}
rawpacket*
rawpacket_new(uint32_t size)
{
size = size_of_pow2(size);
if(size < MIN_BUFFER_SIZE) size = MIN_BUFFER_SIZE;
bytebuffer *b = bytebuffer_new(size);
rawpacket *raw = (rawpacket*)CALLOC(g_rawpk_allocator,1,sizeof(*raw));
((packet*)raw)->type = RAWPACKET;
((packet*)raw)->head = b;
buffer_writer_init(&raw->writer,b,0);
INIT_CONSTROUCTOR(raw);
return raw;
}
rawpacket *rawpacket_new(uint32_t size)
{
bytebuffer *b;
rawpacket *raw;
size = size_of_pow2(size);
if(size < MIN_BUFFER_SIZE) size = MIN_BUFFER_SIZE;
b = bytebuffer_new(size);
raw = calloc(1,sizeof(*raw));
cast(packet*,raw)->type = RAWPACKET;
cast(packet*,raw)->head = b;
buffer_writer_init(&raw->writer,b,0);
INIT_CONSTROUCTOR(raw);
return raw;
}
datagram *datagram_new(int32_t fd,uint32_t buffersize,decoder *d)
{
buffersize = size_of_pow2(buffersize);
if(buffersize < MIN_RECV_BUFSIZE) buffersize = MIN_RECV_BUFSIZE;
datagram *dgarm = calloc(1,sizeof(*dgarm));
datagram_socket_init((dgram_socket_*)dgarm,fd);
dgarm->recv_bufsize = buffersize;
dgarm->next_recv_buf = bytebuffer_new(buffersize);
//save socket_ imp_engine_add,and replace with self
if(!base_engine_add)
base_engine_add = ((handle*)dgarm)->imp_engine_add;
dgarm->imp_engine_add = imp_engine_add;
dgarm->dctor = datagram_dctor;
dgarm->decoder_ = d ? d:dgram_raw_decoder_new();
return dgarm;
}
wpacket*
wpacket_new(uint16_t size)
{
size = size_of_pow2(size);
if(size < MIN_BUFFER_SIZE) size = MIN_BUFFER_SIZE;
bytebuffer *b = bytebuffer_new(size);
wpacket *w = (wpacket*)CALLOC(g_wpk_allocator,1,sizeof(*w));
((packet*)w)->type = WPACKET;
((packet*)w)->head = b;
buffer_writer_init(&w->writer,b,sizeof(*w->len));
w->len = (TYPE_HEAD*)b->data;
((packet*)w)->len_packet = SIZE_HEAD;
((packet*)w)->head->size = SIZE_HEAD;
INIT_CONSTROUCTOR(w);
return w;
}