C++ (Cpp) coap_malloc_type Examples

Example #1

File: pdu.c Project: thatking/liteos_3516c

coap_pdu_t *
coap_pdu_init(unsigned char type, unsigned char code, 
	      unsigned short id, size_t size) {
  coap_pdu_t *pdu;
#ifdef WITH_LWIP
    struct pbuf *p;
#endif

  assert(size <= COAP_MAX_PDU_SIZE);
  /* Size must be large enough to fit the header. */
  if (size < sizeof(coap_hdr_t) || size > COAP_MAX_PDU_SIZE)
    return NULL;

  /* size must be large enough for hdr */
#if defined(WITH_POSIX) || defined(WITH_CONTIKI)
  pdu = coap_malloc_type(COAP_PDU, sizeof(coap_pdu_t));
  if (!pdu) return NULL;
  pdu->hdr = coap_malloc_type(COAP_PDU_BUF, size);
  if (pdu->hdr == NULL) {
    coap_free_type(COAP_PDU, pdu);
    pdu = NULL;
  }
#endif /* WITH_POSIX or WITH_CONTIKI */

#ifdef WITH_LWIP
  pdu = (coap_pdu_t*)coap_malloc_type(COAP_PDU, sizeof(coap_pdu_t));

  if (!pdu) return NULL;
  
  p = pbuf_alloc(PBUF_TRANSPORT, size, PBUF_RAM);
  
  if (p == NULL) {
    coap_free_type(COAP_PDU, pdu);
    pdu = NULL;
  }
  
#endif

  if (pdu) {
#ifdef WITH_LWIP
    pdu->pbuf = p;
#endif
    coap_pdu_clear(pdu, size);
    pdu->hdr->id = id;
    pdu->hdr->type = type;
    pdu->hdr->code = code;
  }
  
  return pdu;
}

Example #2

File: pdu.c Project: sachinrk/libcoap

coap_pdu_t *
coap_pdu_from_pbuf(struct pbuf *pbuf)
{
  if (pbuf == NULL) return NULL;

  LWIP_ASSERT("Can only deal with contiguous PBUFs", pbuf->tot_len == pbuf->len);
  LWIP_ASSERT("coap_read needs to receive an exclusive copy of the incoming pbuf", pbuf->ref == 1);

  coap_pdu_t *result = coap_malloc_type(COAP_PDU, sizeof(coap_pdu_t));
  if (!result) {
	  pbuf_free(pbuf);
	  return NULL;
  }

  memset(result, 0, sizeof(coap_pdu_t));

  result->max_size = pbuf->tot_len;
  result->length = pbuf->tot_len;
  result->hdr = pbuf->payload;
  result->pbuf = pbuf;

  return result;
}