static inline int retry_transfer_wrapper(URLContext *h, unsigned char *buf, int size, int size_min,
int (*transfer_func)(URLContext *h, unsigned char *buf, int size))
{
int ret, len;
int fast_retries = 5;
len = 0;
while (len < size_min) {
ret = transfer_func(h, buf+len, size-len);
if (ret == AVERROR(EINTR))
continue;
if (h->flags & AVIO_FLAG_NONBLOCK)
return ret;
if (ret == AVERROR(EAGAIN)) {
ret = 0;
if (fast_retries)
fast_retries--;
else
usleep(1000);
} else if (ret < 1)
return ret < 0 ? ret : len;
if (ret)
fast_retries = FFMAX(fast_retries, 2);
len += ret;
if (url_interrupt_cb())
return AVERROR_EXIT;
}
return len;
}
static inline int retry_transfer_wrapper(URLContext *h, unsigned char *buf, int size, int size_min,
int (*transfer_func)(URLContext *h, unsigned char *buf, int size))
{
int ret, len;
int64_t timeouttime = av_gettime()+10*(1000*1000);/*10*1S.*/
int retry=0;
len = 0;
while (len < size_min) {
ret = transfer_func(h, buf+len, size-len);/*low level retry 1S*/
if (url_interrupt_cb())
return AVERROR_EXIT;
if (ret == AVERROR(EINTR))
continue;
if (h->flags & AVIO_FLAG_NONBLOCK)
return ret;
if (ret == AVERROR(EAGAIN)) {
if(av_gettime()>=timeouttime)
return AVERROR(EAGAIN);
av_log(NULL,AV_LOG_INFO,"retry_transfer_wrapper,retry=%d\n",retry++);
} else if (ret < 1){
return ret < 0 ? ret : len;
}else{
len+=ret;
}
if (url_interrupt_cb()) /*at least try several times for some teardown cmd finished.*/
return AVERROR_EXIT;
}
return len;
}
static inline int retry_transfer_wrapper(URLContext *h, uint8_t *buf,
int size, int size_min,
int (*transfer_func)(URLContext *h,
uint8_t *buf,
int size))
{
int ret, len;
int fast_retries = 5;
len = 0;
while (len < size_min) {
ret = transfer_func(h, buf + len, size - len);
if (ret == AVERROR(EINTR))
continue;
if (h->flags & AVIO_FLAG_NONBLOCK)
return ret;
if (ret == AVERROR(EAGAIN)) {
ret = 0;
if (fast_retries)
fast_retries--;
else
av_usleep(1000);
} else if (ret < 1)
return (ret < 0 && ret != AVERROR_EOF) ? ret : len;
if (ret)
fast_retries = FFMAX(fast_retries, 2);
len += ret;
if (ff_check_interrupt(&h->interrupt_callback))
return AVERROR_EXIT;
}
return len;
}
static inline int retry_transfer_wrapper(URLContext *h, uint8_t *buf,
int size, int size_min,
int (*transfer_func)(URLContext *h,
uint8_t *buf,
int size))
{
int ret, len;
int fast_retries = 5;
int64_t wait_since = 0;
len = 0;
while (len < size_min) {
if (ff_check_interrupt(&h->interrupt_callback))
return AVERROR_EXIT;
ret = transfer_func(h, buf + len, size - len);
if (ret == AVERROR(EINTR))
continue;
if (h->flags & AVIO_FLAG_NONBLOCK)
return ret;
if (ret == AVERROR(EAGAIN)) {
ret = 0;
if (fast_retries) {
fast_retries--;
} else {
if (h->rw_timeout) {
if (!wait_since)
wait_since = av_gettime_relative();
else if (av_gettime_relative() > wait_since + h->rw_timeout)
return AVERROR(EIO);
}
av_usleep(1000);
}
} else if (ret < 1)
return (ret < 0 && ret != AVERROR_EOF) ? ret : len;
if (ret) {
fast_retries = FFMAX(fast_retries, 2);
wait_since = 0;
}
len += ret;
}
return len;
}
static int
zap_table_grow(zap_t *zap, zap_table_phys_t *tbl,
void (*transfer_func)(const uint64_t *src, uint64_t *dst, int n),
dmu_tx_t *tx)
{
uint64_t b, newblk;
dmu_buf_t *db_old, *db_new;
int err;
int bs = FZAP_BLOCK_SHIFT(zap);
int hepb = 1<<(bs-4);
/* hepb = half the number of entries in a block */
ASSERT(RW_WRITE_HELD(&zap->zap_rwlock));
ASSERT(tbl->zt_blk != 0);
ASSERT(tbl->zt_numblks > 0);
if (tbl->zt_nextblk != 0) {
newblk = tbl->zt_nextblk;
} else {
newblk = zap_allocate_blocks(zap, tbl->zt_numblks * 2);
tbl->zt_nextblk = newblk;
ASSERT0(tbl->zt_blks_copied);
dmu_prefetch(zap->zap_objset, zap->zap_object,
tbl->zt_blk << bs, tbl->zt_numblks << bs);
}
/*
* Copy the ptrtbl from the old to new location.
*/
b = tbl->zt_blks_copied;
err = dmu_buf_hold(zap->zap_objset, zap->zap_object,
(tbl->zt_blk + b) << bs, FTAG, &db_old, DMU_READ_NO_PREFETCH);
if (err)
return (err);
/* first half of entries in old[b] go to new[2*b+0] */
VERIFY(0 == dmu_buf_hold(zap->zap_objset, zap->zap_object,
(newblk + 2*b+0) << bs, FTAG, &db_new, DMU_READ_NO_PREFETCH));
dmu_buf_will_dirty(db_new, tx);
transfer_func(db_old->db_data, db_new->db_data, hepb);
dmu_buf_rele(db_new, FTAG);
/* second half of entries in old[b] go to new[2*b+1] */
VERIFY(0 == dmu_buf_hold(zap->zap_objset, zap->zap_object,
(newblk + 2*b+1) << bs, FTAG, &db_new, DMU_READ_NO_PREFETCH));
dmu_buf_will_dirty(db_new, tx);
transfer_func((uint64_t *)db_old->db_data + hepb,
db_new->db_data, hepb);
dmu_buf_rele(db_new, FTAG);
dmu_buf_rele(db_old, FTAG);
tbl->zt_blks_copied++;
dprintf("copied block %llu of %llu\n",
tbl->zt_blks_copied, tbl->zt_numblks);
if (tbl->zt_blks_copied == tbl->zt_numblks) {
(void) dmu_free_range(zap->zap_objset, zap->zap_object,
tbl->zt_blk << bs, tbl->zt_numblks << bs, tx);
tbl->zt_blk = newblk;
tbl->zt_numblks *= 2;
tbl->zt_shift++;
tbl->zt_nextblk = 0;
tbl->zt_blks_copied = 0;
dprintf("finished; numblocks now %llu (%lluk entries)\n",
tbl->zt_numblks, 1<<(tbl->zt_shift-10));
}
return (0);
}
