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-rw-r--r--src/H5EAcache.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/src/H5EAcache.c b/src/H5EAcache.c
index d484653..35a6916 100644
--- a/src/H5EAcache.c
+++ b/src/H5EAcache.c
@@ -54,11 +54,13 @@
/* Fractal heap format version #'s */
#define H5EA_HDR_VERSION 0 /* Header */
#define H5EA_IBLOCK_VERSION 0 /* Index block */
+#define H5EA_SBLOCK_VERSION 0 /* Super block */
#define H5EA_DBLOCK_VERSION 0 /* Data block */
/* Size of stack buffer for serialization buffers */
#define H5EA_HDR_BUF_SIZE 512
#define H5EA_IBLOCK_BUF_SIZE 512
+#define H5EA_SBLOCK_BUF_SIZE 512
#define H5EA_DBLOCK_BUF_SIZE 512
@@ -87,6 +89,11 @@ static herr_t H5EA__cache_iblock_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy,
static herr_t H5EA__cache_iblock_clear(H5F_t *f, H5EA_iblock_t *iblock, hbool_t destroy);
static herr_t H5EA__cache_iblock_size(const H5F_t *f, const H5EA_iblock_t *iblock, size_t *size_ptr);
static herr_t H5EA__cache_iblock_dest(H5F_t *f, H5EA_iblock_t *iblock);
+static H5EA_sblock_t *H5EA__cache_sblock_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *udata, void *udata2);
+static herr_t H5EA__cache_sblock_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5EA_sblock_t *sblock, unsigned * flags_ptr);
+static herr_t H5EA__cache_sblock_clear(H5F_t *f, H5EA_sblock_t *sblock, hbool_t destroy);
+static herr_t H5EA__cache_sblock_size(const H5F_t *f, const H5EA_sblock_t *sblock, size_t *size_ptr);
+static herr_t H5EA__cache_sblock_dest(H5F_t *f, H5EA_sblock_t *sblock);
static H5EA_dblock_t *H5EA__cache_dblock_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *udata, void *udata2);
static herr_t H5EA__cache_dblock_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5EA_dblock_t *dblock, unsigned * flags_ptr);
static herr_t H5EA__cache_dblock_clear(H5F_t *f, H5EA_dblock_t *dblock, hbool_t destroy);
@@ -118,6 +125,16 @@ const H5AC_class_t H5AC_EARRAY_IBLOCK[1] = {{
(H5AC_size_func_t)H5EA__cache_iblock_size,
}};
+/* H5EA super block inherits cache-like properties from H5AC */
+const H5AC_class_t H5AC_EARRAY_SBLOCK[1] = {{
+ H5AC_EARRAY_SBLOCK_ID,
+ (H5AC_load_func_t)H5EA__cache_sblock_load,
+ (H5AC_flush_func_t)H5EA__cache_sblock_flush,
+ (H5AC_dest_func_t)H5EA__cache_sblock_dest,
+ (H5AC_clear_func_t)H5EA__cache_sblock_clear,
+ (H5AC_size_func_t)H5EA__cache_sblock_size,
+}};
+
/* H5EA data block inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_EARRAY_DBLOCK[1] = {{
H5AC_EARRAY_DBLOCK_ID,
@@ -798,6 +815,315 @@ END_FUNC(STATIC) /* end H5EA__cache_iblock_dest() */
/*-------------------------------------------------------------------------
+ * Function: H5EA__cache_sblock_load
+ *
+ * Purpose: Loads an extensible array super block from the disk.
+ *
+ * Return: Success: Pointer to a new extensible array super block
+ * Failure: NULL
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Sep 30 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(STATIC, ERR,
+H5EA_sblock_t *, NULL, NULL,
+H5EA__cache_sblock_load(H5F_t *f, hid_t dxpl_id, haddr_t addr,
+ const void *_sblk_idx, void *_hdr))
+
+ /* Local variables */
+ H5EA_hdr_t *hdr = (H5EA_hdr_t *)_hdr; /* Shared extensible array information */
+ const unsigned *sblk_idx = (const unsigned *)_sblk_idx; /* Index of this super block */
+ H5EA_sblock_t *sblock = NULL; /* Super block info */
+ size_t size; /* Super block size */
+ H5WB_t *wb = NULL; /* Wrapped buffer for super block data */
+ uint8_t sblock_buf[H5EA_IBLOCK_BUF_SIZE]; /* Buffer for super block */
+ uint8_t *buf; /* Pointer to super block buffer */
+ const uint8_t *p; /* Pointer into raw data buffer */
+ uint32_t stored_chksum; /* Stored metadata checksum value */
+ uint32_t computed_chksum; /* Computed metadata checksum value */
+
+ /* Sanity check */
+ HDassert(f);
+ HDassert(H5F_addr_defined(addr));
+ HDassert(sblk_idx && *sblk_idx > 0);
+ HDassert(hdr);
+
+ /* Allocate the extensible array super block */
+ if(NULL == (sblock = H5EA__sblock_alloc(hdr, *sblk_idx)))
+ H5E_THROW(H5E_CANTALLOC, "memory allocation failed for extensible array super block")
+
+ /* Set the extensible array super block's address */
+ sblock->addr = addr;
+
+ /* Wrap the local buffer for serialized info */
+ if(NULL == (wb = H5WB_wrap(sblock_buf, sizeof(sblock_buf))))
+ H5E_THROW(H5E_CANTINIT, "can't wrap buffer")
+
+ /* Compute the size of the extensible array super block on disk */
+ size = H5EA_SBLOCK_SIZE(sblock);
+
+ /* Get a pointer to a buffer that's large enough for serialized info */
+ if(NULL == (buf = (uint8_t *)H5WB_actual(wb, size)))
+ H5E_THROW(H5E_CANTGET, "can't get actual buffer")
+
+ /* Read super block from disk */
+ if(H5F_block_read(f, H5FD_MEM_EARRAY_SBLOCK, addr, size, dxpl_id, buf) < 0)
+ H5E_THROW(H5E_READERROR, "can't read extensible array super block")
+
+ /* Get temporary pointer to serialized header */
+ p = buf;
+
+ /* Magic number */
+ if(HDmemcmp(p, H5EA_SBLOCK_MAGIC, (size_t)H5_SIZEOF_MAGIC))
+ H5E_THROW(H5E_BADVALUE, "wrong extensible array super block signature")
+ p += H5_SIZEOF_MAGIC;
+
+ /* Version */
+ if(*p++ != H5EA_SBLOCK_VERSION)
+ H5E_THROW(H5E_VERSION, "wrong extensible array super block version")
+
+ /* Extensible array type */
+ if(*p++ != (uint8_t)hdr->cparam.cls->id)
+ H5E_THROW(H5E_BADTYPE, "incorrect extensible array class")
+
+ /* Internal information */
+
+ /* Decode data block addresses */
+ if(sblock->ndblks > 0) {
+ size_t u; /* Local index variable */
+
+ /* Decode addresses of data blocks in super block */
+ for(u = 0; u < sblock->ndblks; u++)
+ H5F_addr_decode(f, &p, &sblock->dblk_addrs[u]);
+ } /* end if */
+
+ /* Sanity check */
+ /* (allow for checksum not decoded yet) */
+ HDassert((size_t)(p - buf) == (size - H5EA_SIZEOF_CHKSUM));
+
+ /* Save the super block's size */
+ sblock->size = size;
+
+ /* Compute checksum on super block */
+ computed_chksum = H5_checksum_metadata(buf, (size_t)(p - buf), 0);
+
+ /* Metadata checksum */
+ UINT32DECODE(p, stored_chksum);
+
+ /* Sanity check */
+ HDassert((size_t)(p - buf) == sblock->size);
+
+ /* Verify checksum */
+ if(stored_chksum != computed_chksum)
+ H5E_THROW(H5E_BADVALUE, "incorrect metadata checksum for extensible array super block")
+
+ /* Set return value */
+ ret_value = sblock;
+
+CATCH
+
+ /* Release resources */
+ if(wb && H5WB_unwrap(wb) < 0)
+ H5E_THROW(H5E_CLOSEERROR, "can't close wrapped buffer")
+ if(!ret_value)
+ if(sblock && H5EA__cache_sblock_dest(f, sblock) < 0)
+ H5E_THROW(H5E_CANTFREE, "unable to destroy extensible array super block")
+
+END_FUNC(STATIC) /* end H5EA__cache_sblock_load() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5EA__cache_sblock_flush
+ *
+ * Purpose: Flushes a dirty extensible array super block to disk.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Sep 30 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(STATIC, ERR,
+herr_t, SUCCEED, FAIL,
+H5EA__cache_sblock_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr,
+ H5EA_sblock_t *sblock, unsigned UNUSED * flags_ptr))
+
+ /* Local variables */
+ H5WB_t *wb = NULL; /* Wrapped buffer for serializing data */
+ uint8_t ser_buf[H5EA_SBLOCK_BUF_SIZE]; /* Serialization buffer */
+
+ /* Sanity check */
+ HDassert(f);
+ HDassert(H5F_addr_defined(addr));
+ HDassert(sblock);
+ HDassert(sblock->hdr);
+
+ if(sblock->cache_info.is_dirty) {
+ uint8_t *buf; /* Temporary raw data buffer */
+ uint8_t *p; /* Pointer into raw data buffer */
+ size_t size; /* Index block size on disk */
+ uint32_t metadata_chksum; /* Computed metadata checksum value */
+
+ /* Wrap the local buffer for serialized info */
+ if(NULL == (wb = H5WB_wrap(ser_buf, sizeof(ser_buf))))
+ H5E_THROW(H5E_CANTINIT, "can't wrap buffer")
+
+ /* Compute the size of the super block on disk */
+ size = sblock->size;
+
+ /* Get a pointer to a buffer that's large enough for serialized info */
+ if(NULL == (buf = (uint8_t *)H5WB_actual(wb, size)))
+ H5E_THROW(H5E_CANTGET, "can't get actual buffer")
+
+ /* Get temporary pointer to serialized info */
+ p = buf;
+
+ /* Magic number */
+ HDmemcpy(p, H5EA_SBLOCK_MAGIC, (size_t)H5_SIZEOF_MAGIC);
+ p += H5_SIZEOF_MAGIC;
+
+ /* Version # */
+ *p++ = H5EA_SBLOCK_VERSION;
+
+ /* Extensible array type */
+ *p++ = sblock->hdr->cparam.cls->id;
+
+ /* Internal information */
+
+ /* Encode data block addresses */
+ if(sblock->ndblks > 0) {
+ size_t u; /* Local index variable */
+
+ /* Encode addresses of data blocks in super block */
+ for(u = 0; u < sblock->ndblks; u++)
+ H5F_addr_encode(f, &p, sblock->dblk_addrs[u]);
+ } /* end if */
+
+ /* Compute metadata checksum */
+ metadata_chksum = H5_checksum_metadata(buf, (size_t)(p - buf), 0);
+
+ /* Metadata checksum */
+ UINT32ENCODE(p, metadata_chksum);
+
+ /* Write the super block */
+ HDassert((size_t)(p - buf) == size);
+ if(H5F_block_write(f, H5FD_MEM_EARRAY_SBLOCK, addr, size, dxpl_id, buf) < 0)
+ H5E_THROW(H5E_WRITEERROR, "unable to save extensible array super block to disk")
+
+ sblock->cache_info.is_dirty = FALSE;
+ } /* end if */
+
+ if(destroy)
+ if(H5EA__cache_sblock_dest(f, sblock) < 0)
+ H5E_THROW(H5E_CANTFREE, "unable to destroy extensible array super block")
+
+CATCH
+
+ /* Release resources */
+ if(wb && H5WB_unwrap(wb) < 0)
+ H5E_THROW(H5E_CLOSEERROR, "can't close wrapped buffer")
+
+END_FUNC(STATIC) /* end H5EA__cache_sblock_flush() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5EA__cache_sblock_clear
+ *
+ * Purpose: Mark a extensible array super block in memory as non-dirty.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Sept 30 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(STATIC, ERR,
+herr_t, SUCCEED, FAIL,
+H5EA__cache_sblock_clear(H5F_t *f, H5EA_sblock_t *sblock, hbool_t destroy))
+
+ /* Sanity check */
+ HDassert(sblock);
+
+ /* Reset the dirty flag */
+ sblock->cache_info.is_dirty = FALSE;
+
+ if(destroy)
+ if(H5EA__cache_sblock_dest(f, sblock) < 0)
+ H5E_THROW(H5E_CANTFREE, "unable to destroy extensible array super block")
+
+CATCH
+
+END_FUNC(STATIC) /* end H5EA__cache_sblock_clear() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5EA__cache_sblock_size
+ *
+ * Purpose: Compute the size in bytes of a extensible array super block
+ * on disk, and return it in *size_ptr. On failure,
+ * the value of *size_ptr is undefined.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Sept 30 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+/* ARGSUSED */
+BEGIN_FUNC(STATIC, NOERR,
+herr_t, SUCCEED, -,
+H5EA__cache_sblock_size(const H5F_t UNUSED *f, const H5EA_sblock_t *sblock,
+ size_t *size_ptr))
+
+ /* Sanity check */
+ HDassert(sblock);
+ HDassert(size_ptr);
+
+ /* Set size value */
+ *size_ptr = sblock->size;
+
+END_FUNC(STATIC) /* end H5EA__cache_sblock_size() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5EA__cache_sblock_dest
+ *
+ * Purpose: Destroys an extensible array super block in memory.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Sep 30 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+BEGIN_FUNC(STATIC, ERR,
+herr_t, SUCCEED, FAIL,
+H5EA__cache_sblock_dest(H5F_t *f, H5EA_sblock_t *sblock))
+
+ /* Sanity check */
+ HDassert(sblock);
+
+ /* Release the super block */
+ if(H5EA__sblock_dest(f, sblock) < 0)
+ H5E_THROW(H5E_CANTFREE, "can't free extensible array super block")
+
+CATCH
+
+END_FUNC(STATIC) /* end H5EA__cache_sblock_dest() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5EA__cache_dblock_load
*
* Purpose: Loads an extensible array data block from the disk.