int ProcessFhSet(nfhs_t pv_Nfhs,
fh_set *pp_Fhs,
fd_set *pp_Fds)
{
int lv_Fd = 0;
struct fh_set lv_Fhs;
if(pp_Fhs != NULL) {
lv_Fhs.FhArray = pp_Fhs->FhArray;
STFS_FH_ZERO(pp_Fhs);
for (int i = 0; i < pv_Nfhs; i++) {
if(i < (int)lv_Fhs.FhArray.size()) {
STFS_ExternalFileHandle *lp_Efh = STFS_ExternalFileHandle::GetExternalFileHandle(lv_Fhs.FhArray[i]);
if (! lp_Efh) {
TRACE_PRINTF2(1, "Error in obtaining External File Handle for %ld\n", lv_Fhs.FhArray[i]);
return -1;
}
if(((lp_Efh->OpenFlagsGet())&O_NONBLOCK) == O_NONBLOCK) {
lv_Fd = lp_Efh->GetFD();
if(lv_Fd >= 0) {
if(FD_ISSET(lv_Fd, pp_Fds)) {
//Insert into fh_set
pp_Fhs->FhArray.push_back(pp_Fhs->FhArray[i]);
}
}
}
}
}
}
return 0;
}
RESULT SQScratchFile::doSelect(Int32 index, DWORD timeout, EPendingIOType type, Int32& err)
{
if(scratchSpace_->getScratchOverflowMode() == SCRATCH_MMAP)
{
return SCRATCH_SUCCESS;
}
fd_set fds;
struct timeval tv;
Int32 retval;
Int64 tLeft = LONG_MAX;
if (timeout >= 0) tLeft = timeout * 10000;
STFS_FH_ZERO(&fds);
STFS_FH_SET(fileHandle_[index].fileNum, &fds);
/* Wait up to five seconds. */
Int64 tBegin = 0;
if (timeout == -1)
{// infinit wait
switch(type)
{
case PEND_READ:
retval = STFS_select(fileHandle_[index].fileNum+1, &fds, NULL, NULL, NULL);
break;
default:
case PEND_WRITE:
retval = STFS_select(fileHandle_[index].fileNum+1, NULL, &fds, NULL, NULL);
break;
}
}
else
{
tv.tv_sec = tLeft / 1000000;
tv.tv_usec = tLeft % 1000000;
tBegin = juliantimestamp_();
switch(type)
{
case PEND_READ:
retval = STFS_select(fileHandle_[index].fileNum+1, &fds, NULL, NULL, &tv);
break;
default:
case PEND_WRITE:
retval = STFS_select(fileHandle_[index].fileNum+1, NULL, &fds, NULL, &tv);
break;
}
}
if (retval == 0)
{ // timeout, nothing available
return IO_NOT_COMPLETE;
}
if (retval < 0) // error
{
err = errno;
return SCRATCH_FAILURE;
}
return SCRATCH_SUCCESS;
}
