static ssize_t sock_cq_sreadfrom(struct fid_cq *cq, void *buf, size_t count,
fi_addr_t *src_addr, const void *cond, int timeout)
{
int ret = 0;
size_t threshold;
struct sock_cq *sock_cq;
uint64_t start_ms = 0, end_ms = 0;
ssize_t cq_entry_len, avail;
sock_cq = container_of(cq, struct sock_cq, cq_fid);
if (ofi_rbused(&sock_cq->cqerr_rb))
return -FI_EAVAIL;
cq_entry_len = sock_cq->cq_entry_size;
if (sock_cq->attr.wait_cond == FI_CQ_COND_THRESHOLD)
threshold = MIN((uintptr_t) cond, count);
else
threshold = count;
if (timeout >= 0) {
start_ms = fi_gettime_ms();
end_ms = start_ms + timeout;
}
if (sock_cq->domain->progress_mode == FI_PROGRESS_MANUAL) {
do {
sock_cq_progress(sock_cq);
fastlock_acquire(&sock_cq->lock);
avail = ofi_rbfdused(&sock_cq->cq_rbfd);
if (avail)
ret = sock_cq_rbuf_read(sock_cq, buf,
MIN(threshold, (size_t)(avail / cq_entry_len)),
src_addr, cq_entry_len);
fastlock_release(&sock_cq->lock);
if (ret == 0 && timeout >= 0) {
if (fi_gettime_ms() >= end_ms)
return -FI_EAGAIN;
}
} while (ret == 0);
} else {
do {
ret = ofi_rbfdwait(&sock_cq->cq_rbfd, timeout);
if (ret <= 0)
break;
fastlock_acquire(&sock_cq->lock);
ret = 0;
avail = ofi_rbfdused(&sock_cq->cq_rbfd);
if (avail)
ret = sock_cq_rbuf_read(sock_cq, buf,
MIN(threshold, (size_t)(avail / cq_entry_len)),
src_addr, cq_entry_len);
else /* No CQ entry available, read the fd */
ofi_rbfdreset(&sock_cq->cq_rbfd);
fastlock_release(&sock_cq->lock);
if ((ret == -FI_EAGAIN || ret == 0) && timeout >= 0) {
timeout = end_ms - fi_gettime_ms();
if (timeout <= 0)
break;
}
} while (ret == 0 || ret == -FI_EAGAIN);
}
return (ret == 0 || ret == -FI_ETIMEDOUT) ? -FI_EAGAIN : ret;
}
static ssize_t sock_cq_sreadfrom(struct fid_cq *cq, void *buf, size_t count,
fi_addr_t *src_addr, const void *cond, int timeout)
{
int ret = 0;
size_t threshold;
struct sock_cq *sock_cq;
uint64_t start_ms;
ssize_t cq_entry_len, avail;
sock_cq = container_of(cq, struct sock_cq, cq_fid);
if (ofi_rbused(&sock_cq->cqerr_rb))
return -FI_EAVAIL;
cq_entry_len = sock_cq->cq_entry_size;
if (sock_cq->attr.wait_cond == FI_CQ_COND_THRESHOLD)
threshold = MIN((uintptr_t) cond, count);
else
threshold = count;
start_ms = (timeout >= 0) ? fi_gettime_ms() : 0;
if (sock_cq->domain->progress_mode == FI_PROGRESS_MANUAL) {
while (1) {
sock_cq_progress(sock_cq);
fastlock_acquire(&sock_cq->lock);
avail = ofi_rbfdused(&sock_cq->cq_rbfd);
if (avail) {
ret = sock_cq_rbuf_read(sock_cq, buf,
MIN(threshold, (size_t)(avail / cq_entry_len)),
src_addr, cq_entry_len);
}
fastlock_release(&sock_cq->lock);
if (ret)
return ret;
if (timeout >= 0) {
timeout -= (int) (fi_gettime_ms() - start_ms);
if (timeout <= 0)
return -FI_EAGAIN;
}
if (ofi_atomic_get32(&sock_cq->signaled)) {
ofi_atomic_set32(&sock_cq->signaled, 0);
return -FI_ECANCELED;
}
};
} else {
do {
fastlock_acquire(&sock_cq->lock);
ret = 0;
avail = ofi_rbfdused(&sock_cq->cq_rbfd);
if (avail) {
ret = sock_cq_rbuf_read(sock_cq, buf,
MIN(threshold, (size_t)(avail / cq_entry_len)),
src_addr, cq_entry_len);
} else {
ofi_rbfdreset(&sock_cq->cq_rbfd);
}
fastlock_release(&sock_cq->lock);
if (ret && ret != -FI_EAGAIN)
return ret;
if (timeout >= 0) {
timeout -= (int) (fi_gettime_ms() - start_ms);
if (timeout <= 0)
return -FI_EAGAIN;
}
if (ofi_atomic_get32(&sock_cq->signaled)) {
ofi_atomic_set32(&sock_cq->signaled, 0);
return -FI_ECANCELED;
}
ret = ofi_rbfdwait(&sock_cq->cq_rbfd, timeout);
} while (ret > 0);
}
return (ret == 0 || ret == -FI_ETIMEDOUT) ? -FI_EAGAIN : ret;
}