uint32 SPM_u32PullData(void *data, int len)
{
uint32 free_cnt = 0;
uint32 min_cnt = 0;
uint32 avlb_cnt = 0;
/* Cal how much free space do SPM have */
OS_eEnterCriticalSection(mutexRxRb);
free_cnt = ringbuffer_free_space(&rb_rx_spm);
OS_eExitCriticalSection(mutexRxRb);
min_cnt = MIN(free_cnt, len);
DBG_vPrintf(TRACE_NODE, "rev_cnt: %u, free_cnt: %u \r\n", len, free_cnt);
if(min_cnt > 0)
{
OS_eEnterCriticalSection(mutexRxRb);
ringbuffer_push(&rb_rx_spm, data, min_cnt);
avlb_cnt = ringbuffer_data_size(&rb_rx_spm);
OS_eExitCriticalSection(mutexRxRb);
}
return avlb_cnt;
}
static int wait_fill_event(struct tb_event *event, struct timeval *timeout)
{
/* ;-) */
#define ENOUGH_DATA_FOR_INPUT_PARSING 128
int result;
char buf[ENOUGH_DATA_FOR_INPUT_PARSING];
fd_set events;
memset(event, 0, sizeof(struct tb_event));
/* try to extract event from input buffer, return on success */
event->type = TB_EVENT_KEY;
if (extract_event(event, &inbuf, inputmode) == 0)
return TB_EVENT_KEY;
/* it looks like input buffer is incomplete, let's try the short path */
size_t r = fread(buf, 1, ENOUGH_DATA_FOR_INPUT_PARSING, in);
if (r < ENOUGH_DATA_FOR_INPUT_PARSING && feof(in))
clearerr(in);
if (r > 0) {
if (ringbuffer_free_space(&inbuf) < r)
return -1;
ringbuffer_push(&inbuf, buf, r);
if (extract_event(event, &inbuf, inputmode) == 0)
return TB_EVENT_KEY;
}
/* no stuff in FILE's internal buffer, block in select */
while (1) {
FD_ZERO(&events);
FD_SET(in_fileno, &events);
FD_SET(winch_fds[0], &events);
int maxfd = (winch_fds[0] > in_fileno) ? winch_fds[0] : in_fileno;
result = select(maxfd+1, &events, 0, 0, timeout);
if (!result)
return 0;
if (FD_ISSET(in_fileno, &events)) {
event->type = TB_EVENT_KEY;
size_t r = fread(buf, 1, ENOUGH_DATA_FOR_INPUT_PARSING, in);
if (r < ENOUGH_DATA_FOR_INPUT_PARSING && feof(in))
clearerr(in);
if (r == 0)
continue;
/* if there is no free space in input buffer, return error */
if (ringbuffer_free_space(&inbuf) < r)
return -1;
/* fill buffer */
ringbuffer_push(&inbuf, buf, r);
if (extract_event(event, &inbuf, inputmode) == 0)
return TB_EVENT_KEY;
}
if (FD_ISSET(winch_fds[0], &events)) {
event->type = TB_EVENT_RESIZE;
int zzz = 0;
read(winch_fds[0], &zzz, sizeof(int));
buffer_size_change_request = 1;
get_term_size(&event->w, &event->h);
return TB_EVENT_RESIZE;
}
}
}