summaryrefslogtreecommitdiffstats
path: root/src/H5Fistore.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/H5Fistore.c')
-rw-r--r--src/H5Fistore.c130
1 files changed, 97 insertions, 33 deletions
diff --git a/src/H5Fistore.c b/src/H5Fistore.c
index 96ef5fc..06997a1 100644
--- a/src/H5Fistore.c
+++ b/src/H5Fistore.c
@@ -29,10 +29,12 @@ static hbool_t interface_initialize_g = FALSE;
/* PRIVATE PROTOTYPES */
static size_t H5F_istore_sizeof_rkey (H5F_t *f, const void *_udata);
-static haddr_t H5F_istore_new_node (H5F_t *f, void *_lt_key, void *_udata,
- void *_rt_key);
-static intn H5F_istore_cmp (H5F_t *f, void *_lt_key, void *_udata,
- void *_rt_key);
+static haddr_t H5F_istore_new_node (H5F_t *f, H5B_ins_t, void *_lt_key,
+ void *_udata, void *_rt_key);
+static intn H5F_istore_cmp2 (H5F_t *f, void *_lt_key, void *_udata,
+ void *_rt_key);
+static intn H5F_istore_cmp3 (H5F_t *f, void *_lt_key, void *_udata,
+ void *_rt_key);
static herr_t H5F_istore_found (H5F_t *f, haddr_t addr, const void *_lt_key,
void *_udata, const void *_rt_key);
static haddr_t H5F_istore_insert (H5F_t *f, haddr_t addr, H5B_ins_t *anchor,
@@ -82,7 +84,8 @@ H5B_class_t H5B_ISTORE[1] = {{
sizeof (H5F_istore_key_t), /*sizeof_nkey */
H5F_istore_sizeof_rkey, /*get_sizeof_rkey */
H5F_istore_new_node, /*new */
- H5F_istore_cmp, /*cmp */
+ H5F_istore_cmp2, /*cmp2 */
+ H5F_istore_cmp3, /*cmp3 */
H5F_istore_found, /*found */
H5F_istore_insert, /*insert */
FALSE, /*follow min branch? */
@@ -209,10 +212,51 @@ H5F_istore_encode_key (H5F_t *f, H5B_t *bt, uint8 *raw, void *_key)
FUNC_LEAVE (SUCCEED);
}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5F_istore_cmp2
+ *
+ * Purpose: Compares two keys sort of like strcmp(). The UDATA pointer
+ * is only to supply extra information not carried in the keys
+ * (in this case, the dimensionality).
+ *
+ * Return: Success: -1 if LT_KEY is less than RT_KEY;
+ * 1 if LT_KEY is greater than RT_KEY;
+ * 0 if LT_KEY and RT_KEY are equal.
+ *
+ * Failure: FAIL (same as LT_KEY<RT_KEY)
+ *
+ * Programmer: Robb Matzke
+ * Thursday, November 6, 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static intn
+H5F_istore_cmp2 (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
+{
+ H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key;
+ H5F_istore_key_t *rt_key = (H5F_istore_key_t *)_rt_key;
+ H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *)_udata;
+ intn cmp;
+
+ FUNC_ENTER (H5F_istore_cmp2, NULL, FAIL);
+
+ assert (lt_key);
+ assert (rt_key);
+ assert (udata);
+ assert (udata->mesg.ndims>0 && udata->mesg.ndims<=H5O_ISTORE_NDIMS);
+ cmp = H5V_vector_cmp (udata->mesg.ndims, lt_key->offset, rt_key->offset);
+
+ FUNC_LEAVE (cmp);
+}
+
/*-------------------------------------------------------------------------
- * Function: H5F_istore_cmp
+ * Function: H5F_istore_cmp3
*
* Purpose: Compare the requested datum UDATA with the left and right
* keys of the B-tree.
@@ -241,11 +285,14 @@ H5F_istore_encode_key (H5F_t *f, H5B_t *bt, uint8 *raw, void *_key)
*-------------------------------------------------------------------------
*/
static intn
-H5F_istore_cmp (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
+H5F_istore_cmp3 (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
{
H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key;
H5F_istore_key_t *rt_key = (H5F_istore_key_t *)_rt_key;
H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *)_udata;
+ intn cmp = 0;
+
+ FUNC_ENTER (H5F_istore_cmp3, NULL, FAIL);
assert (lt_key);
assert (rt_key);
@@ -253,13 +300,13 @@ H5F_istore_cmp (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
assert (udata->mesg.ndims>0 && udata->mesg.ndims<=H5O_ISTORE_NDIMS);
if (H5V_vector_lt (udata->mesg.ndims, udata->key.offset, lt_key->offset)) {
- return -1;
+ cmp = -1;
} else if (H5V_vector_ge (udata->mesg.ndims, udata->key.offset,
rt_key->offset)) {
- return 1;
- } else {
- return 0;
+ cmp = 1;
}
+
+ FUNC_LEAVE (cmp);
}
@@ -283,7 +330,8 @@ H5F_istore_cmp (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
*-------------------------------------------------------------------------
*/
static haddr_t
-H5F_istore_new_node (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
+H5F_istore_new_node (H5F_t *f, H5B_ins_t op,
+ void *_lt_key, void *_udata, void *_rt_key)
{
H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key;
H5F_istore_key_t *rt_key = (H5F_istore_key_t *)_rt_key;
@@ -308,16 +356,25 @@ H5F_istore_new_node (H5F_t *f, void *_lt_key, void *_udata, void *_rt_key)
HRETURN_ERROR (H5E_IO, H5E_CANTINIT, FAIL);
}
- /* left key describes the UDATA, right key is a zero-size "edge" */
+ /* Initialize the key(s) */
for (i=0; i<udata->mesg.ndims; i++) {
+ /*
+ * The left key describes the storage of the UDATA chunk being inserted
+ * into the tree.
+ */
lt_key->offset[i] = udata->key.offset[i];
lt_key->size[i] = udata->key.size[i];
assert (udata->key.size[i]>0);
-
- rt_key->offset[i] = udata->key.offset[i] + udata->key.size[i];
- rt_key->size[i] = 0;
- }
+ /*
+ * The right key might already be present. If not, then add
+ * a zero-width chunk.
+ */
+ if (H5B_INS_LEFT!=op) {
+ rt_key->offset[i] = udata->key.offset[i] + udata->key.size[i];
+ rt_key->size[i] = 0;
+ }
+ }
FUNC_LEAVE (udata->addr);
}
@@ -351,7 +408,6 @@ H5F_istore_found (H5F_t *f, haddr_t addr, const void *_lt_key,
{
H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *)_udata;
const H5F_istore_key_t *lt_key = (const H5F_istore_key_t *)_lt_key;
- const H5F_istore_key_t *rt_key = (const H5F_istore_key_t *)_rt_key;
int i;
FUNC_ENTER (H5F_istore_found, NULL, FAIL);
@@ -361,7 +417,6 @@ H5F_istore_found (H5F_t *f, haddr_t addr, const void *_lt_key,
assert (addr>=0);
assert (udata);
assert (lt_key);
- assert (rt_key);
/* Initialize return values */
udata->addr = addr;
@@ -434,7 +489,7 @@ H5F_istore_insert (H5F_t *f, haddr_t addr, H5B_ins_t *parent_ins,
assert (rt_key);
assert (rt_key_changed);
- cmp = H5F_istore_cmp (f, lt_key, udata, rt_key);
+ cmp = H5F_istore_cmp3 (f, lt_key, udata, rt_key);
assert (cmp<=0);
if (cmp<0) {
@@ -531,9 +586,8 @@ H5F_istore_copy_hyperslab (H5F_t *f, const H5O_istore_t *istore, H5F_isop_t op,
size_t idx_min[H5O_ISTORE_NDIMS];
size_t idx_max[H5O_ISTORE_NDIMS];
size_t sub_size[H5O_ISTORE_NDIMS];
- size_t sub_offset_f[H5O_ISTORE_NDIMS];
+ size_t offset_wrt_chunk[H5O_ISTORE_NDIMS];
size_t sub_offset_m[H5O_ISTORE_NDIMS];
- size_t sub_offset_ch[H5O_ISTORE_NDIMS];
size_t chunk_size;
uint8 *chunk=NULL;
H5F_istore_ud1_t udata;
@@ -585,14 +639,25 @@ H5F_istore_copy_hyperslab (H5F_t *f, const H5O_istore_t *istore, H5F_isop_t op,
/* Read/Write chunk or create it if it doesn't exist */
udata.mesg.ndims = istore->ndims;
for (i=0; i<istore->ndims; i++) {
+
+ /* The location and size of the chunk being accessed */
udata.key.offset[i] = idx_cur[i] * istore->alignment[i];
udata.key.size[i] = istore->alignment[i];
- sub_offset_f[i] = MAX ((offset_f?offset_f[i]:0), udata.key.offset[i]);
- sub_offset_m[i] = (offset_m?offset_m[i]:0) +
- sub_offset_f[i] - (offset_f?offset_f[i]:0);
- sub_size[i] = (idx_cur[i]+1)*istore->alignment[i]-sub_offset_f[i];
- sub_offset_ch[i] = sub_offset_f[i] - udata.key.offset[i];
+
+ /* The offset and size wrt the chunk */
+ offset_wrt_chunk[i] = MAX ((offset_f?offset_f[i]:0),
+ udata.key.offset[i]) -
+ udata.key.offset[i];
+ sub_size[i] = MIN ((idx_cur[i]+1)*istore->alignment[i],
+ (offset_f?offset_f[i]:0)+size[i]) -
+ (udata.key.offset[i]+offset_wrt_chunk[i]);
+
+ /* Offset into mem buffer */
+ sub_offset_m[i] = udata.key.offset[i] + offset_wrt_chunk[i] +
+ (offset_m?offset_m[i]:0) -
+ (offset_f?offset_f[i]:0);
}
+
if (H5F_ISTORE_WRITE==op) {
status = H5B_insert (f, H5B_ISTORE, istore->btree_addr, &udata);
assert (status>=0);
@@ -605,10 +670,9 @@ H5F_istore_copy_hyperslab (H5F_t *f, const H5O_istore_t *istore, H5F_isop_t op,
* partial chunk then load the chunk from disk.
*/
if (H5F_ISTORE_READ==op ||
- !H5V_hyper_eq (istore->ndims,
- udata.key.offset, udata.key.size,
- sub_offset_f, sub_size)) {
- if (status>=0) {
+ !H5V_vector_zerop (istore->ndims, offset_wrt_chunk) ||
+ !H5V_vector_eq (istore->ndims, sub_size, udata.key.size)) {
+ if (status>=0 && udata.addr>0) {
if (H5F_block_read (f, udata.addr, chunk_size, chunk)<0) {
HGOTO_ERROR (H5E_IO, H5E_READERROR, FAIL);
}
@@ -620,7 +684,7 @@ H5F_istore_copy_hyperslab (H5F_t *f, const H5O_istore_t *istore, H5F_isop_t op,
/* Transfer data to/from the chunk */
if (H5F_ISTORE_WRITE==op) {
H5V_hyper_copy (istore->ndims, sub_size,
- udata.key.size, sub_offset_ch, chunk,
+ udata.key.size, offset_wrt_chunk, chunk,
size_m, sub_offset_m, buf);
if (H5F_block_write (f, udata.addr, chunk_size, chunk)<0) {
HGOTO_ERROR (H5E_IO, H5E_WRITEERROR, FAIL);
@@ -628,7 +692,7 @@ H5F_istore_copy_hyperslab (H5F_t *f, const H5O_istore_t *istore, H5F_isop_t op,
} else {
H5V_hyper_copy (istore->ndims, sub_size,
size_m, sub_offset_m, buf,
- udata.key.size, sub_offset_ch, chunk);
+ udata.key.size, offset_wrt_chunk, chunk);
}
/* Increment indices */
generated by cgit v0.12 at 2024-11-14 05:35:47 (GMT)