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-rw-r--r--src/H5BT.c102
-rw-r--r--src/H5BTcache.c8
-rw-r--r--src/H5BTdbg.c4
-rw-r--r--src/H5BTpkg.h2
-rw-r--r--src/H5BTprivate.h3
5 files changed, 110 insertions, 9 deletions
diff --git a/src/H5BT.c b/src/H5BT.c
index acbb9f3..2373b9e 100644
--- a/src/H5BT.c
+++ b/src/H5BT.c
@@ -41,6 +41,12 @@
/* Local typedefs */
+/* Struct for locating blocks */
+typedef struct {
+ hsize_t search_size; /* Size of block to search for */
+ H5BT_blk_info_t found; /* Information for block found */
+} H5BT_locate_t;
+
/* Local prototypes */
/* Package variables */
@@ -97,7 +103,7 @@ H5BT_create(H5F_t *f, hid_t dxpl_id, haddr_t *addr_p)
if (H5B2_create(f, dxpl_id, H5B2_BLKTRK, H5BT_BT2_NODE_SIZE, H5BT_BT2_RREC_SIZE(f), H5BT_BT2_SPLIT_PERC, H5BT_BT2_MERGE_PERC, &bt->bt2_addr/*out*/)<0)
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTINIT, FAIL, "can't create B-tree for storing block info")
- /* Cache the new B-tree node */
+ /* Cache the new block tracker node */
if (H5AC_set(f, dxpl_id, H5AC_BLTR, *addr_p, bt, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTINIT, FAIL, "can't add block tracker info to cache")
@@ -647,6 +653,100 @@ done:
/*-------------------------------------------------------------------------
+ * Function: H5BT_locate_cb
+ *
+ * Purpose: v2 B-tree find callback
+ *
+ * Return: Success: 0
+ *
+ * Failure: 1
+ *
+ * Programmer: Quincey Koziol
+ * Friday, March 11, 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+H5BT_locate_cb(const void *_record, void *_op_data)
+{
+ const H5BT_blk_info_t *record = (const H5BT_blk_info_t *)_record;
+ H5BT_locate_t *search = (H5BT_locate_t *)_op_data;
+ int ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5BT_locate_cb)
+
+ /* Check if we've found a block that's big enough */
+ if (record->len >= search->search_size) {
+ search->found = *record;
+ ret_value = H5B2_ITER_STOP;
+ } /* end if */
+ else
+ ret_value = H5B2_ITER_CONT;
+
+ FUNC_LEAVE_NOAPI(ret_value);
+} /* end H5BT_locate_cb() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5BT_locate
+ *
+ * Purpose: Locate first block that is at least a certain size
+ *
+ * Return: Non-negative on success, negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Mar 24 2005
+ *
+ *-------------------------------------------------------------------------
+ */
+htri_t
+H5BT_locate(H5F_t *f, hid_t dxpl_id, haddr_t addr, hsize_t size, haddr_t *locate_addr, hsize_t *locate_size)
+{
+ H5BT_t *bt = NULL; /* The new B-tree header information */
+ H5BT_locate_t found; /* Block info found */
+ htri_t ret_value=TRUE;
+
+ FUNC_ENTER_NOAPI(H5BT_locate, FAIL)
+
+ /*
+ * Check arguments.
+ */
+ HDassert(f);
+ HDassert(H5F_addr_defined(addr));
+
+ /* Look up the block tracker header */
+ if (NULL == (bt = H5AC_protect(f, dxpl_id, H5AC_BLTR, addr, NULL, NULL, H5AC_WRITE)))
+ HGOTO_ERROR(H5E_BLKTRK, H5E_CANTPROTECT, FAIL, "unable to load block tracker info")
+
+ /* Iterate through blocks, looking for first one that is large enough */
+ found.search_size = size;
+ found.found.addr = HADDR_UNDEF;
+ if (H5B2_iterate(f, dxpl_id, H5B2_BLKTRK, bt->bt2_addr, H5BT_locate_cb, &found) < 0)
+ HGOTO_ERROR(H5E_BLKTRK, H5E_NOTFOUND, FAIL, "unable to locate block")
+
+ /* Update user's information, if block was found */
+ if(H5F_addr_defined(found.found.addr)) {
+ if(locate_addr)
+ *locate_addr = found.found.addr;
+ if(locate_size)
+ *locate_size = found.found.len;
+ } /* end if */
+ else
+ ret_value = FALSE;
+
+done:
+ /* Release the block tracker info */
+ if (bt && H5AC_unprotect(f, dxpl_id, H5AC_BLTR, addr, bt, H5AC__NO_FLAGS_SET) < 0)
+ HDONE_ERROR(H5E_BLKTRK, H5E_CANTUNPROTECT, FAIL, "unable to release block tracker info")
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5BT_locate() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5BT_delete
*
* Purpose: Delete a block tracker from a file
diff --git a/src/H5BTcache.c b/src/H5BTcache.c
index 60c31b3..f5f6a4e 100644
--- a/src/H5BTcache.c
+++ b/src/H5BTcache.c
@@ -23,7 +23,7 @@
*-------------------------------------------------------------------------
*/
-#define H5BT_PACKAGE /*suppress error about including H5B2pkg */
+#define H5BT_PACKAGE /*suppress error about including H5SHpkg */
/* Private headers */
#include "H5private.h" /* Generic Functions */
@@ -99,7 +99,7 @@ H5BT_cache_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void UNUSED *udata1
HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
HDmemset(&bt->cache_info,0,sizeof(H5AC_info_t));
- /* Compute the size of the B-tree header on disk */
+ /* Compute the size of the block tracker on disk */
size = H5BT_SIZE(f);
/* Allocate temporary buffer */
@@ -180,7 +180,7 @@ H5BT_cache_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5BT_t
uint8_t *p; /* Pointer into raw data buffer */
size_t size;
- /* Compute the size of the B-tree header on disk */
+ /* Compute the size of the block tracker info on disk */
size = H5BT_SIZE(f);
/* Allocate temporary buffer */
@@ -232,7 +232,7 @@ done:
/*-------------------------------------------------------------------------
- * Function: H5B_cache_dest
+ * Function: H5BT_cache_dest
*
* Purpose: Destroys a block tracker in memory.
*
diff --git a/src/H5BTdbg.c b/src/H5BTdbg.c
index a926801..16c497b 100644
--- a/src/H5BTdbg.c
+++ b/src/H5BTdbg.c
@@ -27,7 +27,7 @@
/* Private headers */
#include "H5private.h" /* Generic Functions */
-#include "H5BTpkg.h" /* B-trees */
+#include "H5BTpkg.h" /* Block tracker */
#include "H5Eprivate.h" /* Error handling */
@@ -100,5 +100,5 @@ done:
HDONE_ERROR(H5E_BTREE, H5E_PROTECT, FAIL, "unable to release block tracker info")
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5BT_debug() */
+} /* end H5BT_hdr_debug() */
diff --git a/src/H5BTpkg.h b/src/H5BTpkg.h
index 5ceb904..e9140ec 100644
--- a/src/H5BTpkg.h
+++ b/src/H5BTpkg.h
@@ -28,7 +28,7 @@
#define _H5BTpkg_H
/* Get package's private header */
-#include "H5BTprivate.h"
+#include "H5BTprivate.h" /* Block tracker */
/* Other private headers needed by this file */
#include "H5ACprivate.h" /* Metadata cache */
diff --git a/src/H5BTprivate.h b/src/H5BTprivate.h
index b98aac1..f6470e5 100644
--- a/src/H5BTprivate.h
+++ b/src/H5BTprivate.h
@@ -52,8 +52,9 @@ H5_DLL herr_t H5BT_remove(H5F_t *f, hid_t dxpl_id, haddr_t addr, haddr_t offset,
hsize_t length);
H5_DLL herr_t H5BT_get_total_size(H5F_t *f, hid_t dxpl_id, haddr_t addr,
hsize_t *tot_size);
+H5_DLL herr_t H5BT_locate(H5F_t *f, hid_t dxpl_id, haddr_t addr, hsize_t size,
+ haddr_t *locate_addr, hsize_t *locate_size);
H5_DLL herr_t H5BT_delete(H5F_t *f, hid_t dxpl_id, haddr_t addr);
#endif /* _H5BTprivate_H */
-
generated by cgit v0.12 at 2024-11-26 10:33:22 (GMT)