static int get_next_file_chunk_for_huffman(GtBitsequence **bits,
GtUword *length,
GtUword *offset,
GtUword *pad_length,
void *meminfo)
{
const int empty = 0,
success = 1;
HcrHuffDataIterator *data_iter;
gt_assert(meminfo);
gt_assert(bits && length && offset && pad_length);
data_iter = (HcrHuffDataIterator*) meminfo;
gt_log_log("pos in iter: "GT_WU"", (GtUword) data_iter->pos);
if (data_iter->pos < data_iter->end) {
gt_fa_xmunmap(data_iter->data);
data_iter->data = NULL;
data_iter->data = gt_fa_xmmap_read_range(data_iter->path,
(size_t) data_iter->blocksize,
data_iter->pos);
data_iter->pos += data_iter->blocksize;
if (data_iter->pos > data_iter->end) {
gt_safe_assign(*length,
(data_iter->blocksize - (data_iter->pos - data_iter->end)));
*length /= sizeof (GtBitsequence);
}
else
*length = data_iter->bitseq_per_chunk;
*offset = 0;
*pad_length = 0;
*bits = data_iter->data;
return success;
}
gt_fa_xmunmap(data_iter->data);
data_iter->data = NULL;
*bits = NULL;
*length = 0;
*offset = 0;
*pad_length = 0;
return empty;
}
void *gt_Sfxmappedrange_map(GtSfxmappedrange *sfxmappedrange,
GtUword minindex,
GtUword maxindex)
{
gt_assert(sfxmappedrange != NULL);
if (sfxmappedrange->ptr != NULL)
{
gt_fa_xmunmap(sfxmappedrange->ptr);
}
if (sfxmappedrange->transformfunc != NULL)
{
sfxmappedrange->transformfunc(&minindex,&maxindex,
sfxmappedrange->transformfunc_data);
}
if (minindex <= maxindex)
{
GtMappedrange lbrange;
GtUword unitoffset;
size_t sizeoftable;
gt_Sfxmapped_offset_end(&lbrange,
sfxmappedrange->sizeofunit,
sfxmappedrange->pagesize,
minindex,
maxindex);
sizeoftable = gt_Sfxmappedrange_size_entire(sfxmappedrange);
gt_log_log("mapped %s["GT_WU".."GT_WU"] for %s (%.1f%% of all)",
gt_str_get(sfxmappedrange->tablename),
lbrange.mapoffset,
lbrange.mapend,
sfxmappedrange->writable ? "writing" : "reading",
(lbrange.mapend - lbrange.mapoffset + 1
>= (GtUword) sizeoftable)
? 100.0
: 100.0 * (lbrange.mapend - lbrange.mapoffset + 1)/
sizeoftable);
gt_assert(lbrange.mapoffset <= lbrange.mapend);
gt_assert(lbrange.mapoffset <= minindex * sfxmappedrange->sizeofunit);
gt_assert(maxindex * sfxmappedrange->sizeofunit <= lbrange.mapend);
gt_assert(lbrange.mapoffset % sfxmappedrange->pagesize == 0);
if (sfxmappedrange->writable)
{
sfxmappedrange->ptr
= gt_fa_xmmap_write_range(gt_str_get(sfxmappedrange->filename),
(size_t) (lbrange.mapend-lbrange.mapoffset+1),
(size_t) lbrange.mapoffset);
} else
{
sfxmappedrange->ptr
= gt_fa_xmmap_read_range (gt_str_get(sfxmappedrange->filename),
(size_t) (lbrange.mapend-lbrange.mapoffset+1),
(size_t) lbrange.mapoffset);
}
sfxmappedrange->indexrange_defined = true;
sfxmappedrange->currentmaxindex = maxindex;
sfxmappedrange->currentminindex = minindex;
unitoffset = lbrange.mapoffset / sfxmappedrange->sizeofunit;
switch (sfxmappedrange->type)
{
case GtSfxGtBitsequence:
return ((GtBitsequence *) sfxmappedrange->ptr) - unitoffset;
case GtSfxuint32_t:
return ((uint32_t *) sfxmappedrange->ptr) - unitoffset;
case GtSfxunsignedlong:
return ((GtUword *) sfxmappedrange->ptr) - unitoffset;
default:
gt_assert(false);
break;
}
gt_assert(false);
}
sfxmappedrange->ptr = NULL;
sfxmappedrange->indexrange_defined = true;
sfxmappedrange->currentmaxindex = maxindex;
sfxmappedrange->currentminindex = minindex;
return NULL;
}
