/**
* See pcsl_network.h for definition.
*/
void pcsl_add_network_notifier(
void *handle,
int event) {
switch (event) {
case PCSL_NET_CHECK_READ:
case PCSL_NET_CHECK_ACCEPT:
na_register_for_read(handle);
break;
case PCSL_NET_CHECK_WRITE:
na_register_for_write(handle);
break;
case PCSL_NET_CHECK_EXCEPTION:
/* need revisit */
break;
}
}
/**
* See pcsl_socket.h for definition.
*/
int pcsl_socket_read_start(
void *handle,
unsigned char *pData,
int len,
int *pBytesRead,
void **pContext)
{
int status;
status = pcsl_socket_read_common(handle, pData, len, pBytesRead);
if (status == PCSL_NET_WOULDBLOCK) {
na_register_for_read(handle);
*pContext = NULL;
}
return status;
}
/**
* See pcsl_socket.h for definition.
*/
int pcsl_socket_read_finish(
void *handle,
unsigned char *pData,
int len,
int *pBytesRead,
void *context)
{
int status;
status = pcsl_socket_read_common(handle, pData, len, pBytesRead);
if (status == PCSL_NET_WOULDBLOCK) {
na_register_for_read(handle);
} else {
na_unregister_for_read(handle);
}
return status;
}
/**
* Common functionality for accept start and finish
*/
static int pcsl_serversocket_accept_common(
void *handle,
void **pConnectionHandle,
void **pContext)
{
int connfd;
int flags;
struct sockaddr_in sa;
int saLen = sizeof (sa);
int listenfd = na_get_fd(handle);
connfd = accept(listenfd, (struct sockaddr *)&sa, (socklen_t *)&saLen);
if (connfd == SOCKET_ERROR) {
if (errno == EWOULDBLOCK || errno == ECONNABORTED) {
/*
* The "listenfd" is marked as non-blocking and no connections
* are present to be accepted.
*/
na_register_for_read((void *)handle);
*pContext = NULL;
return PCSL_NET_WOULDBLOCK;
} else {
na_unregister_for_read((void *)handle);
return PCSL_NET_IOERROR;
}
} else {
na_unregister_for_read((void *)handle);
/*
* Linux accept does _not_ inherit socket flags like O_NONBLOCK.
* So, irrespective of the blocking or non-blockimg mode of listenfd,
* connfd, must be set to non-blocking mode; otherwise VM will
* be blocked for any I/O operation on this new socket descriptor.
*/
flags = fcntl(connfd, F_GETFL, 0);
fcntl(connfd, F_SETFL, flags | O_NONBLOCK);
*pConnectionHandle = na_create(connfd);
return PCSL_NET_SUCCESS;
}
}
/**
* See pcsl_datagram.h for definition.
*/
int pcsl_datagram_read_start(
void *handle,
unsigned char *pAddress,
int *port,
char *buffer,
int length,
int *pBytesRead,
void **pContext)
{
int status;
status = pcsl_datagram_read_common(handle, pAddress, port,
buffer, length, pBytesRead);
if (status == PCSL_NET_WOULDBLOCK) {
na_register_for_read(handle);
*pContext = NULL;
}
return status;
}