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authorQuincey Koziol <koziol@hdfgroup.org>2015-06-18 00:58:49 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2015-06-18 00:58:49 (GMT)
commitf30ab55f41296667eab0b273132ffc20c4323717 (patch)
tree2fd6a85b7c15e3505e308e21b41e67297cc58508 /src/H5Ocache.c
parent6e9e9e0dd200979642de8d2a2bce2f66f9728237 (diff)
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[svn-r27237] Description:
Merge v3 metadata cache changes to trunk. Yay! :-) Tested on: MacOSX/64 10.10.3 (amazon) w/serial & parallel Linux/32 2.6.x (jam) w/serial & parallel (daily tested on branch)
Diffstat (limited to 'src/H5Ocache.c')
-rw-r--r--src/H5Ocache.c1029
1 files changed, 524 insertions, 505 deletions
diff --git a/src/H5Ocache.c b/src/H5Ocache.c
index 816e06a..db1bd1f 100644
--- a/src/H5Ocache.c
+++ b/src/H5Ocache.c
@@ -68,17 +68,25 @@
/********************/
/* Metadata cache callbacks */
-static H5O_t *H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *udata);
-static herr_t H5O_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5O_t *oh, unsigned H5_ATTR_UNUSED * flags_ptr);
-static herr_t H5O_dest(H5F_t *f, H5O_t *oh);
-static herr_t H5O_clear(H5F_t *f, H5O_t *oh, hbool_t destroy);
-static herr_t H5O_size(const H5F_t *f, const H5O_t *oh, size_t *size_ptr);
-
-static H5O_chunk_proxy_t *H5O_cache_chk_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *udata);
-static herr_t H5O_cache_chk_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5O_chunk_proxy_t *chk_proxy, unsigned H5_ATTR_UNUSED * flags_ptr);
-static herr_t H5O_cache_chk_dest(H5F_t *f, H5O_chunk_proxy_t *chk_proxy);
-static herr_t H5O_cache_chk_clear(H5F_t *f, H5O_chunk_proxy_t *chk_proxy, hbool_t destroy);
-static herr_t H5O_cache_chk_size(const H5F_t *f, const H5O_chunk_proxy_t *chk_proxy, size_t *size_ptr);
+static herr_t H5O__cache_get_load_size(const void *udata, size_t *image_len);
+static void *H5O__cache_deserialize(const void *image, size_t len,
+ void *udata, hbool_t *dirty);
+static herr_t H5O__cache_image_len(const void *thing, size_t *image_len,
+ hbool_t *compressed_ptr, size_t *compressed_image_len_ptr);
+static herr_t H5O__cache_serialize(const H5F_t *f, void *image, size_t len,
+ void *thing);
+static herr_t H5O__cache_free_icr(void *thing);
+static herr_t H5O__cache_clear(const H5F_t *f, void *thing, hbool_t about_to_destroy);
+
+static herr_t H5O__cache_chk_get_load_size(const void *udata, size_t *image_len);
+static void *H5O__cache_chk_deserialize(const void *image, size_t len,
+ void *udata, hbool_t *dirty);
+static herr_t H5O__cache_chk_image_len(const void *thing, size_t *image_len,
+ hbool_t *compressed_ptr, size_t *compressed_image_len_ptr);
+static herr_t H5O__cache_chk_serialize(const H5F_t *f, void *image, size_t len,
+ void *thing);
+static herr_t H5O__cache_chk_free_icr(void *thing);
+static herr_t H5O__cache_chk_clear(const H5F_t *f, void *thing, hbool_t about_to_destroy);
/* Chunk proxy routines */
static herr_t H5O__chunk_proxy_dest(H5O_chunk_proxy_t *chunk_proxy);
@@ -99,24 +107,36 @@ static herr_t H5O__add_cont_msg(H5O_cont_msgs_t *cont_msg_info,
/* H5O object header prefix inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_OHDR[1] = {{
- H5AC_OHDR_ID,
- (H5AC_load_func_t)H5O_load,
- (H5AC_flush_func_t)H5O_flush,
- (H5AC_dest_func_t)H5O_dest,
- (H5AC_clear_func_t)H5O_clear,
- (H5AC_notify_func_t)NULL,
- (H5AC_size_func_t)H5O_size,
+ H5AC_OHDR_ID, /* Metadata client ID */
+ "object header", /* Metadata client name (for debugging) */
+ H5FD_MEM_OHDR, /* File space memory type for client */
+ H5AC__CLASS_SPECULATIVE_LOAD_FLAG, /* Client class behavior flags */
+ H5O__cache_get_load_size, /* 'get_load_size' callback */
+ H5O__cache_deserialize, /* 'deserialize' callback */
+ H5O__cache_image_len, /* 'image_len' callback */
+ NULL, /* 'pre_serialize' callback */
+ H5O__cache_serialize, /* 'serialize' callback */
+ NULL, /* 'notify' callback */
+ H5O__cache_free_icr, /* 'free_icr' callback */
+ H5O__cache_clear, /* 'clear' callback */
+ NULL, /* 'fsf_size' callback */
}};
/* H5O object header chunk inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_OHDR_CHK[1] = {{
- H5AC_OHDR_CHK_ID,
- (H5AC_load_func_t)H5O_cache_chk_load,
- (H5AC_flush_func_t)H5O_cache_chk_flush,
- (H5AC_dest_func_t)H5O_cache_chk_dest,
- (H5AC_clear_func_t)H5O_cache_chk_clear,
- (H5AC_notify_func_t)NULL,
- (H5AC_size_func_t)H5O_cache_chk_size,
+ H5AC_OHDR_CHK_ID, /* Metadata client ID */
+ "object header continuation chunk", /* Metadata client name (for debugging) */
+ H5FD_MEM_OHDR, /* File space memory type for client */
+ H5AC__CLASS_NO_FLAGS_SET, /* Client class behavior flags */
+ H5O__cache_chk_get_load_size, /* 'get_load_size' callback */
+ H5O__cache_chk_deserialize, /* 'deserialize' callback */
+ H5O__cache_chk_image_len, /* 'image_len' callback */
+ NULL, /* 'pre_serialize' callback */
+ H5O__cache_chk_serialize, /* 'serialize' callback */
+ NULL, /* 'notify' callback */
+ H5O__cache_chk_free_icr, /* 'free_icr' callback */
+ H5O__cache_chk_clear, /* 'clear' callback */
+ NULL, /* 'fsf_size' callback */
}};
/* Declare external the free list for H5O_unknown_t's */
@@ -141,55 +161,75 @@ H5FL_SEQ_DEFINE(H5O_cont_t);
/*-------------------------------------------------------------------------
- * Function: H5O_load
+ * Function: H5O__cache_get_load_size()
*
- * Purpose: Loads an object header from disk.
+ * Purpose: Tell the metadata cache how much data to read from file in
+ * the first speculative read for the object header. Note that we do
+ * not have to be concerned about reading past the end of file, as the
+ * cache will clamp the read to avoid this if needed.
*
- * Return: Success: Pointer to the new object header.
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * Failure: NULL
+ * Programmer: John Mainzer
+ * 7/28/14
*
- * Programmer: Robb Matzke
- * matzke@llnl.gov
- * Aug 5 1997
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O__cache_get_load_size(const void H5_ATTR_UNUSED *_udata, size_t *image_len)
+{
+ FUNC_ENTER_STATIC_NOERR
+
+ /* Check arguments */
+ HDassert(image_len);
+
+ *image_len = H5O_SPEC_READ_SIZE;
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O__cache_get_load_size() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O__cache_deserialize
+ *
+ * Purpose: Attempt to deserialize the object header contained in the
+ * supplied buffer, load the data into an instance of H5O_t, and
+ * return a pointer to the new instance.
+ *
+ * Note that the object header is read with with a speculative read.
+ * If the initial read is too small, make note of this fact and return
+ * without error. H5C_load_entry() will note the size discrepency
+ * and retry the deserialize operation with the correct size read.
+ *
+ * Return: Success: Pointer to in core representation
+ * Failure: NULL
+ *
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
-static H5O_t *
-H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
+static void *
+H5O__cache_deserialize(const void *_image, size_t len, void *_udata,
+ hbool_t *dirty)
{
- H5O_t *oh = NULL; /* Object header read in */
- H5O_cache_ud_t *udata = (H5O_cache_ud_t *)_udata; /* User data for callback */
- H5WB_t *wb = NULL; /* Wrapped buffer for prefix data */
- uint8_t read_buf[H5O_SPEC_READ_SIZE]; /* Buffer for speculative read */
- const uint8_t *p; /* Pointer into buffer to decode */
- uint8_t *buf; /* Buffer to decode */
- size_t spec_read_size; /* Size of buffer to speculatively read in */
- size_t prefix_size; /* Size of object header prefix */
- size_t buf_size; /* Size of prefix+chunk #0 buffer */
- haddr_t eoa; /* Relative end of file address */
- H5O_t *ret_value; /* Return value */
-
- FUNC_ENTER_NOAPI_NOINIT
+ H5O_t *oh = NULL; /* Object header read in */
+ H5O_cache_ud_t *udata = (H5O_cache_ud_t *)_udata; /* User data for callback */
+ const uint8_t *image = (const uint8_t *)_image; /* Pointer into buffer to decode */
+ size_t prefix_size; /* Size of object header prefix */
+ size_t buf_size; /* Size of prefix+chunk #0 buffer */
+ void * ret_value = NULL; /* Return value */
+
+ FUNC_ENTER_STATIC
/* Check arguments */
- HDassert(f);
- HDassert(H5F_addr_defined(addr));
+ HDassert(image);
+ HDassert(len > 0);
HDassert(udata);
HDassert(udata->common.f);
HDassert(udata->common.cont_msg_info);
-
- /* Make certain we don't speculatively read off the end of the file */
- if(HADDR_UNDEF == (eoa = H5F_get_eoa(f, H5FD_MEM_OHDR)))
- HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, NULL, "unable to determine file size")
-
- /* Compute the size of the speculative object header buffer */
- H5_CHECKED_ASSIGN(spec_read_size, size_t, MIN(eoa - addr, H5O_SPEC_READ_SIZE), hsize_t);
-
- /* Attempt to speculatively read both object header prefix and first chunk */
- if(H5F_block_read(f, H5FD_MEM_OHDR, addr, spec_read_size, dxpl_id, read_buf) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_READERROR, NULL, "unable to read object header")
- p = read_buf;
+ HDassert(dirty);
/* Allocate space for the object header data structure */
if(NULL == (oh = H5FL_CALLOC(H5O_t)))
@@ -201,18 +241,18 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
/* Check for presence of magic number */
/* (indicates version 2 or later) */
- if(!HDmemcmp(p, H5O_HDR_MAGIC, (size_t)H5_SIZEOF_MAGIC)) {
+ if(!HDmemcmp(image, H5O_HDR_MAGIC, (size_t)H5_SIZEOF_MAGIC)) {
/* Magic number */
- p += H5_SIZEOF_MAGIC;
+ image += H5_SIZEOF_MAGIC;
/* Version */
- oh->version = *p++;
- if(H5O_VERSION_2 != oh->version)
+ oh->version = *image++;
+ if(H5O_VERSION_2 != oh->version)
HGOTO_ERROR(H5E_OHDR, H5E_VERSION, NULL, "bad object header version number")
/* Flags */
- oh->flags = *p++;
- if(oh->flags & ~H5O_HDR_ALL_FLAGS)
+ oh->flags = *image++;
+ if(oh->flags & ~H5O_HDR_ALL_FLAGS)
HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "unknown object header status flag(s)")
/* Number of links to object (unless overridden by refcount message) */
@@ -222,13 +262,13 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
if(oh->flags & H5O_HDR_STORE_TIMES) {
uint32_t tmp; /* Temporary value */
- UINT32DECODE(p, tmp);
+ UINT32DECODE(image, tmp);
oh->atime = (time_t)tmp;
- UINT32DECODE(p, tmp);
+ UINT32DECODE(image, tmp);
oh->mtime = (time_t)tmp;
- UINT32DECODE(p, tmp);
+ UINT32DECODE(image, tmp);
oh->ctime = (time_t)tmp;
- UINT32DECODE(p, tmp);
+ UINT32DECODE(image, tmp);
oh->btime = (time_t)tmp;
} /* end if */
else
@@ -236,8 +276,9 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
/* Attribute fields */
if(oh->flags & H5O_HDR_ATTR_STORE_PHASE_CHANGE) {
- UINT16DECODE(p, oh->max_compact);
- UINT16DECODE(p, oh->min_dense);
+ UINT16DECODE(image, oh->max_compact);
+ UINT16DECODE(image, oh->min_dense);
+
if(oh->max_compact < oh->min_dense)
HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "bad object header attribute phase change values")
} /* end if */
@@ -249,19 +290,19 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
/* First chunk size */
switch(oh->flags & H5O_HDR_CHUNK0_SIZE) {
case 0: /* 1 byte size */
- oh->chunk0_size = *p++;
+ oh->chunk0_size = *image++;
break;
case 1: /* 2 byte size */
- UINT16DECODE(p, oh->chunk0_size);
+ UINT16DECODE(image, oh->chunk0_size);
break;
case 2: /* 4 byte size */
- UINT32DECODE(p, oh->chunk0_size);
+ UINT32DECODE(image, oh->chunk0_size);
break;
case 3: /* 8 byte size */
- UINT64DECODE(p, oh->chunk0_size);
+ UINT64DECODE(image, oh->chunk0_size);
break;
default:
@@ -272,7 +313,7 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
} /* end if */
else {
/* Version */
- oh->version = *p++;
+ oh->version = *image++;
if(H5O_VERSION_1 != oh->version)
HGOTO_ERROR(H5E_OHDR, H5E_VERSION, NULL, "bad object header version number")
@@ -280,13 +321,13 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
oh->flags = H5O_CRT_OHDR_FLAGS_DEF;
/* Reserved */
- p++;
+ image++;
/* Number of messages */
- UINT16DECODE(p, udata->v1_pfx_nmesgs);
+ UINT16DECODE(image, udata->v1_pfx_nmesgs);
/* Link count */
- UINT32DECODE(p, oh->nlink);
+ UINT32DECODE(image, oh->nlink);
/* Reset unused time fields */
oh->atime = oh->mtime = oh->ctime = oh->btime = 0;
@@ -296,45 +337,36 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
oh->min_dense = 0;
/* First chunk size */
- UINT32DECODE(p, oh->chunk0_size);
- if((udata->v1_pfx_nmesgs > 0 && oh->chunk0_size < H5O_SIZEOF_MSGHDR_OH(oh)) ||
- (udata->v1_pfx_nmesgs == 0 && oh->chunk0_size > 0))
+ UINT32DECODE(image, oh->chunk0_size);
+
+ if((udata->v1_pfx_nmesgs > 0 &&
+ oh->chunk0_size < H5O_SIZEOF_MSGHDR_OH(oh)) ||
+ (udata->v1_pfx_nmesgs == 0 && oh->chunk0_size > 0))
HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "bad object header chunk size")
/* Reserved, in version 1 (for 8-byte alignment padding) */
- p += 4;
+ image += 4;
} /* end else */
/* Determine object header prefix length */
- prefix_size = (size_t)(p - (const uint8_t *)read_buf);
+ prefix_size = (size_t)(image - (const uint8_t *)_image);
HDassert((size_t)prefix_size == (size_t)(H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh)));
/* Compute the size of the buffer used */
buf_size = oh->chunk0_size + (size_t)H5O_SIZEOF_HDR(oh);
- /* Check if the speculative read was large enough to parse the first chunk */
- if(spec_read_size < buf_size) {
- /* Wrap the local buffer for serialized header info */
- if(NULL == (wb = H5WB_wrap(read_buf, sizeof(read_buf))))
- HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "can't wrap buffer")
-
- /* Get a pointer to a buffer that's large enough for serialized header */
- if(NULL == (buf = (uint8_t *)H5WB_actual(wb, buf_size)))
- HGOTO_ERROR(H5E_OHDR, H5E_NOSPACE, NULL, "can't get actual buffer")
-
- /* Copy existing raw data into new buffer */
- HDmemcpy(buf, read_buf, spec_read_size);
-
- /* Read rest of the raw data */
- if(H5F_block_read(f, H5FD_MEM_OHDR, (addr + spec_read_size), (buf_size - spec_read_size), dxpl_id, (buf + spec_read_size)) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_READERROR, NULL, "unable to read object header data")
+ /* Check to see if the buffer provided is large enough to contain both
+ * the prefix and the first chunk. If it isn't, make note of the desired
+ * size, but otherwise do nothing. H5C_load_entry() will notice the
+ * discrepency, load the correct size buffer, and retry the deserialize.
+ */
+ if(len >= buf_size) {
+ /* Parse the first chunk */
+ if(H5O__chunk_deserialize(oh, udata->common.addr, oh->chunk0_size, (const uint8_t *)_image, &(udata->common), dirty) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "can't deserialize first object header chunk")
} /* end if */
else
- buf = read_buf;
-
- /* Parse the first chunk */
- if(H5O__chunk_deserialize(oh, udata->common.addr, oh->chunk0_size, buf, &(udata->common), &oh->cache_info.is_dirty) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "can't deserialize first object header chunk")
+ HDassert(!udata->made_attempt);
/* Note that we've loaded the object header from the file */
udata->made_attempt = TRUE;
@@ -343,202 +375,234 @@ H5O_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
ret_value = oh;
done:
- /* Release resources */
- if(wb && H5WB_unwrap(wb) < 0)
- HDONE_ERROR(H5E_OHDR, H5E_CLOSEERROR, NULL, "can't close wrapped buffer")
-
/* Release the [possibly partially initialized] object header on errors */
if(!ret_value && oh)
if(H5O_free(oh) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, NULL, "unable to destroy object header data")
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_load() */
+} /* end H5O__cache_deserialize() */
/*-------------------------------------------------------------------------
- * Function: H5O_flush
+ * Function: H5O__cache_image_len
*
- * Purpose: Flushes (and destroys) an object header.
+ * Purpose: Compute the size in bytes of the specified instance of
+ * H5O_t on disk, and return it in *image_len. On failure,
+ * the value of *image_len is undefined.
*
- * Return: Non-negative on success/Negative on failure
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * Programmer: Robb Matzke
- * matzke@llnl.gov
- * Aug 5 1997
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t H5_ATTR_UNUSED addr, H5O_t *oh, unsigned H5_ATTR_UNUSED * flags_ptr)
+H5O__cache_image_len(const void *_thing, size_t *image_len,
+ hbool_t H5_ATTR_UNUSED *compressed_ptr, size_t H5_ATTR_UNUSED *compressed_image_len_ptr)
{
- herr_t ret_value = SUCCEED; /* Return value */
+ const H5O_t *oh = (const H5O_t *)_thing; /* Object header to query */
- FUNC_ENTER_NOAPI_NOINIT
+ FUNC_ENTER_STATIC_NOERR
/* Check arguments */
- HDassert(f);
- HDassert(H5F_addr_defined(addr));
HDassert(oh);
+ HDassert(oh->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(oh->cache_info.type == H5AC_OHDR);
+ HDassert(image_len);
+
+ /* Report the object header's prefix+first chunk length */
+ if(oh->chunk0_size)
+ *image_len = (size_t)H5O_SIZEOF_HDR(oh) + oh->chunk0_size;
+ else
+ *image_len = oh->chunk[0].size;
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O__cache_image_len() */
- /* flush */
- if(oh->cache_info.is_dirty) {
- uint8_t *p; /* Pointer to object header prefix buffer */
+/********************************/
+/* no H5O_cache_pre_serialize() */
+/********************************/
+
+/*-------------------------------------------------------------------------
+ * Function: H5O__cache_serialize
+ *
+ * Purpose: Serialize the contents of the supplied object header, and
+ * load this data into the supplied buffer.
+ *
+ * Return: Success: SUCCEED
+ * Failure: FAIL
+ *
+ * Programmer: John Mainzer
+ * 7/28/14
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O__cache_serialize(const H5F_t *f, void *image, size_t len, void *_thing)
+{
+ H5O_t *oh = (H5O_t *)_thing; /* Object header to encode */
+ uint8_t *chunk_image; /* Pointer to object header prefix buffer */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_STATIC
+
+ /* Check arguments */
+ HDassert(f);
+ HDassert(image);
+ HDassert(oh);
+ HDassert(oh->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(oh->cache_info.type == H5AC_OHDR);
+ HDassert(oh->chunk[0].size == len);
#ifdef H5O_DEBUG
-H5O_assert(oh);
+ H5O_assert(oh);
#endif /* H5O_DEBUG */
- /* Point to raw data 'image' for first chunk, which has room for the prefix */
- p = oh->chunk[0].image;
-
- /* Later versions of object header prefix have different format and
- * also require that chunk 0 always be updated, since the checksum
- * on the entire block of memory needs to be updated if anything is
- * modified */
- if(oh->version > H5O_VERSION_1) {
- uint64_t chunk0_size; /* Size of chunk 0's data */
+ /* Point to raw data 'image' for first chunk, which
+ * has room for the prefix
+ */
+ chunk_image = oh->chunk[0].image;
- HDassert(oh->chunk[0].size >= (size_t)H5O_SIZEOF_HDR(oh));
- chunk0_size = oh->chunk[0].size - (size_t)H5O_SIZEOF_HDR(oh);
+ /* Later versions of object header prefix have different format and
+ * also require that chunk 0 always be updated, since the checksum
+ * on the entire block of memory needs to be updated if anything is
+ * modified
+ */
+ if(oh->version > H5O_VERSION_1) {
+ uint64_t chunk0_size; /* Size of chunk 0's data */
- /* Verify magic number */
- HDassert(!HDmemcmp(p, H5O_HDR_MAGIC, H5_SIZEOF_MAGIC));
- p += H5_SIZEOF_MAGIC;
+ HDassert(oh->chunk[0].size >= (size_t)H5O_SIZEOF_HDR(oh));
+ chunk0_size = oh->chunk[0].size - (size_t)H5O_SIZEOF_HDR(oh);
- /* Version */
- *p++ = oh->version;
+ /* Verify magic number */
+ HDassert(!HDmemcmp(chunk_image, H5O_HDR_MAGIC, H5_SIZEOF_MAGIC));
+ chunk_image += H5_SIZEOF_MAGIC;
- /* Flags */
- *p++ = oh->flags;
+ /* Version */
+ *chunk_image++ = oh->version;
- /* Time fields */
- if(oh->flags & H5O_HDR_STORE_TIMES) {
- UINT32ENCODE(p, oh->atime);
- UINT32ENCODE(p, oh->mtime);
- UINT32ENCODE(p, oh->ctime);
- UINT32ENCODE(p, oh->btime);
- } /* end if */
+ /* Flags */
+ *chunk_image++ = oh->flags;
- /* Attribute fields */
- if(oh->flags & H5O_HDR_ATTR_STORE_PHASE_CHANGE) {
- UINT16ENCODE(p, oh->max_compact);
- UINT16ENCODE(p, oh->min_dense);
- } /* end if */
+ /* Time fields */
+ if(oh->flags & H5O_HDR_STORE_TIMES) {
+ UINT32ENCODE(chunk_image, oh->atime);
+ UINT32ENCODE(chunk_image, oh->mtime);
+ UINT32ENCODE(chunk_image, oh->ctime);
+ UINT32ENCODE(chunk_image, oh->btime);
+ } /* end if */
- /* First chunk size */
- switch(oh->flags & H5O_HDR_CHUNK0_SIZE) {
- case 0: /* 1 byte size */
- HDassert(chunk0_size < 256);
- *p++ = (uint8_t)chunk0_size;
- break;
-
- case 1: /* 2 byte size */
- HDassert(chunk0_size < 65536);
- UINT16ENCODE(p, chunk0_size);
- break;
-
- case 2: /* 4 byte size */
- /* use <= 2**32 -1 to stay within 4 bytes integer range */
- HDassert(chunk0_size <= 4294967295UL);
- UINT32ENCODE(p, chunk0_size);
- break;
-
- case 3: /* 8 byte size */
- UINT64ENCODE(p, chunk0_size);
- break;
-
- default:
- HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, FAIL, "bad size for chunk 0")
- } /* end switch */
+ /* Attribute fields */
+ if(oh->flags & H5O_HDR_ATTR_STORE_PHASE_CHANGE) {
+ UINT16ENCODE(chunk_image, oh->max_compact);
+ UINT16ENCODE(chunk_image, oh->min_dense);
} /* end if */
- else {
- /* Version */
- *p++ = oh->version;
- /* Reserved */
- *p++ = 0;
+ /* First chunk size */
+ switch(oh->flags & H5O_HDR_CHUNK0_SIZE) {
+ case 0: /* 1 byte size */
+ HDassert(chunk0_size < 256);
+ *chunk_image++ = (uint8_t)chunk0_size;
+ break;
+
+ case 1: /* 2 byte size */
+ HDassert(chunk0_size < 65536);
+ UINT16ENCODE(chunk_image, chunk0_size);
+ break;
+
+ case 2: /* 4 byte size */
+ /* use <= 2**32 -1 to stay within 4 bytes integer range */
+ HDassert(chunk0_size <= 4294967295UL);
+ UINT32ENCODE(chunk_image, chunk0_size);
+ break;
- /* Number of messages */
+ case 3: /* 8 byte size */
+ UINT64ENCODE(chunk_image, chunk0_size);
+ break;
+
+ default:
+ HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, FAIL, "bad size for chunk 0")
+ } /* end switch */
+ } /* end if */
+ else {
+ /* Version */
+ *chunk_image++ = oh->version;
+
+ /* Reserved */
+ *chunk_image++ = 0;
+
+ /* Number of messages */
#ifdef H5O_ENABLE_BAD_MESG_COUNT
- if(oh->store_bad_mesg_count)
- UINT16ENCODE(p, (oh->nmesgs - 1))
- else
+ if(oh->store_bad_mesg_count)
+ UINT16ENCODE(chunk_image, (oh->nmesgs - 1))
+ else
#endif /* H5O_ENABLE_BAD_MESG_COUNT */
- UINT16ENCODE(p, oh->nmesgs);
-
- /* Link count */
- UINT32ENCODE(p, oh->nlink);
+ UINT16ENCODE(chunk_image, oh->nmesgs);
- /* First chunk size */
- UINT32ENCODE(p, (oh->chunk[0].size - (size_t)H5O_SIZEOF_HDR(oh)));
+ /* Link count */
+ UINT32ENCODE(chunk_image, oh->nlink);
- /* Zero to alignment */
- HDmemset(p, 0, (size_t)(H5O_SIZEOF_HDR(oh) - 12));
- p += (size_t)(H5O_SIZEOF_HDR(oh) - 12);
- } /* end else */
- HDassert((size_t)(p - oh->chunk[0].image) == (size_t)(H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh)));
+ /* First chunk size */
+ UINT32ENCODE(chunk_image, (oh->chunk[0].size - (size_t)H5O_SIZEOF_HDR(oh)));
- /* Serialize messages for this chunk */
- if(H5O__chunk_serialize(f, oh, (unsigned)0) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize first object header chunk")
+ /* Zero to alignment */
+ HDmemset(chunk_image, 0, (size_t)(H5O_SIZEOF_HDR(oh) - 12));
+ chunk_image += (size_t)(H5O_SIZEOF_HDR(oh) - 12);
+ } /* end else */
- /* Write the chunk out */
- HDassert(H5F_addr_defined(oh->chunk[0].addr));
- if(H5F_block_write(f, H5FD_MEM_OHDR, oh->chunk[0].addr, oh->chunk[0].size, dxpl_id, oh->chunk[0].image) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_WRITEERROR, FAIL, "unable to write object header chunk to disk")
+ HDassert((size_t)(chunk_image - oh->chunk[0].image) == (size_t)(H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh)));
- /* Mark object header as clean now */
- oh->cache_info.is_dirty = FALSE;
- } /* end if */
+ /* Serialize messages for this chunk */
+ if(H5O__chunk_serialize(f, oh, (unsigned)0) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize first object header chunk")
- /* Destroy the object header, if requested */
- if(destroy)
- if(H5O_dest(f, oh) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to destroy object header data")
+ /* copy the chunk into the image -- this is potentially expensive.
+ * Can we rework things so that the object header and the cache
+ * share a buffer?
+ */
+ HDmemcpy(image, oh->chunk[0].image, len);
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_flush() */
+} /* end H5O__cache_serialize() */
+
+/**********************************/
+/* no H5O_cache_notify() function */
+/**********************************/
/*-------------------------------------------------------------------------
- * Function: H5O_dest
+ * Function: H5O__cache_free_icr
*
- * Purpose: Destroys an object header.
+ * Purpose: Free the in core representation of the supplied object header.
*
- * Return: Non-negative on success/Negative on failure
+ * Note: The metadata cache sets the object's cache_info.magic to
+ * H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
+ * callback (checked in assert).
*
- * Programmer: Quincey Koziol
- * koziol@ncsa.uiuc.edu
- * Jan 15 2003
+ * Return: Success: SUCCEED
+ * Failure: FAIL
+ *
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_dest(H5F_t *f, H5O_t *oh)
-{
- herr_t ret_value = SUCCEED; /* Return value */
+H5O__cache_free_icr(void *_thing)
+{
+ H5O_t *oh = (H5O_t *)_thing; /* Object header to destroy */
+ herr_t ret_value = SUCCEED; /* Return value */
- FUNC_ENTER_NOAPI_NOINIT
+ FUNC_ENTER_STATIC
/* Check arguments */
HDassert(oh);
- HDassert(oh->rc == 0);
-
- /* Verify that node is clean */
- HDassert(!oh->cache_info.is_dirty);
-
- /* If we're going to free the space on disk, the address must be valid */
- HDassert(!oh->cache_info.free_file_space_on_destroy || H5F_addr_defined(oh->cache_info.addr));
-
- /* Check for releasing file space for object header */
- if(oh->chunk && oh->cache_info.free_file_space_on_destroy) {
- /* Free main (first) object header "chunk" */
- /* (XXX: Nasty usage of internal DXPL value! -QAK) */
- if(H5MF_xfree(f, H5FD_MEM_OHDR, H5AC_dxpl_id, oh->chunk[0].addr, (hsize_t)oh->chunk[0].size) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to free object header")
- } /* end if */
+ HDassert(oh->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
+ HDassert(oh->cache_info.type == H5AC_OHDR);
/* Destroy object header */
if(H5O_free(oh) < 0)
@@ -546,170 +610,143 @@ H5O_dest(H5F_t *f, H5O_t *oh)
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_dest() */
+} /* end H5O__cache_free_icr() */
/*-------------------------------------------------------------------------
- * Function: H5O_clear
+ * Function: H5O__cache_clear
*
- * Purpose: Mark a object header in memory as non-dirty.
+ * Purpose: Clear all dirty bits associated with this cache entry.
*
- * Return: Non-negative on success/Negative on failure
+ * This is ncessary as the object header cache client maintains
+ * its own dirty bits on individual messages. These dirty bits
+ * used to be cleared by the old V2 metadata cache flush callback,
+ * but now the metadata cache must clear them explicitly, as
+ * the serialize callback does not imply that the data has been
+ * written to disk.
*
- * Programmer: Quincey Koziol
- * koziol@ncsa.uiuc.edu
- * Mar 20 2003
- *
- * Changes: In the parallel case, there is the possibility that the
- * the object header may be flushed by different processes
- * over the life of the computation. Thus we must ensure
- * that the chunk images are up to date before we mark the
- * messages clean -- as otherwise we may overwrite valid
- * data with a blank section of a chunk image.
+ * This callback is also necessary for the parallel case.
*
- * To deal with this, I have added code to call
- * H5O_chunk_serialize() for all chunks before we
- * mark all messages as clean if we are not destroying the
- * object. Do this in the parallel case only, as the problem
- * can only occur in this context.
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * JRM -- 10/12/10
+ * Programmer: John Mainzer
+ * 9/22/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_clear(H5F_t *f, H5O_t *oh, hbool_t destroy)
-{
- unsigned u; /* Local index variable */
- herr_t ret_value = SUCCEED;
+H5O__cache_clear(const H5F_t *f, void *_thing, hbool_t about_to_destroy)
+{
+ H5O_t *oh = (H5O_t *)_thing; /* Object header to reset */
+ unsigned u; /* Local index variable */
+ herr_t ret_value = SUCCEED; /* Return value */
- FUNC_ENTER_NOAPI_NOINIT
+ FUNC_ENTER_STATIC
/* Check arguments */
HDassert(oh);
+ HDassert(oh->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(oh->cache_info.type == H5AC_OHDR);
#ifdef H5_HAVE_PARALLEL
- if ( ( oh->cache_info.is_dirty ) && ( ! destroy ) ) {
-
- size_t i;
-
- /* scan through all chunks associated with the object header,
- * and cause them to update their images for all entries currently
- * marked dirty. Must do this in the parallel case, as it is possible
- * that this processor may clear this object header several times
- * before flushing it -- thus causing undefined sections of the image
- * to be written to disk overwriting valid data.
+ if((oh->nchunks > 0) && (!about_to_destroy)) {
+ /* Scan through chunk 0 (the chunk stored contiguously with this
+ * object header) and cause it to update its image of all entries
+ * currently marked dirty. Must do this in the parallel case, as
+ * it is possible that this processor may clear this object header
+ * several times before flushing it -- thus causing undefined
+ * sections of the image to be written to disk overwriting valid data.
*/
-
- for ( i = 0; i < oh->nchunks; i++ ) {
-
- if(H5O__chunk_serialize(f, oh, i) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize object header chunk")
- }
- }
+ if(H5O__chunk_serialize(f, oh, 0) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize object header chunk")
+ } /* end if */
#endif /* H5_HAVE_PARALLEL */
/* Mark messages stored with the object header (i.e. messages in chunk 0) as clean */
for(u = 0; u < oh->nmesgs; u++)
- oh->mesg[u].dirty = FALSE;
+ if(oh->mesg[u].chunkno == 0)
+ oh->mesg[u].dirty = FALSE;
#ifndef NDEBUG
/* Reset the number of messages dirtied by decoding */
oh->ndecode_dirtied = 0;
#endif /* NDEBUG */
- /* Mark whole header as clean */
- oh->cache_info.is_dirty = FALSE;
-
- if(destroy)
- if(H5O_dest(f, oh) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to destroy object header data")
-
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_clear() */
+} /* end H5O__cache_clear() */
/*-------------------------------------------------------------------------
- * Function: H5O_size
+ * Function: H5O__cache_chk_get_load_size()
*
- * Purpose: Compute the size in bytes of the specified instance of
- * H5O_t on disk, and return it in *len_ptr. On failure,
- * the value of *len_ptr is undefined.
+ * Purpose: Tell the metadata cache how large the on disk image of the
+ * chunk proxy is, so it can load the image into a buffer for the
+ * deserialize call. In this case, we simply look up the size in
+ * the user data, and return it in *image_len,
*
- * Return: Non-negative on success/Negative on failure
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * Programmer: John Mainzer
- * 5/13/04
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_size(const H5F_t H5_ATTR_UNUSED *f, const H5O_t *oh, size_t *size_ptr)
+H5O__cache_chk_get_load_size(const void *_udata, size_t *image_len)
{
- FUNC_ENTER_NOAPI_NOINIT_NOERR
+ const H5O_chk_cache_ud_t *udata = (const H5O_chk_cache_ud_t *)_udata; /* User data for callback */
- /* check args */
- HDassert(oh);
- HDassert(size_ptr);
+ FUNC_ENTER_STATIC_NOERR
- /* Report the object header's prefix+first chunk length */
- if(oh->chunk0_size)
- *size_ptr = (size_t)H5O_SIZEOF_HDR(oh) + oh->chunk0_size;
- else
- *size_ptr = oh->chunk[0].size;
+ /* Check arguments */
+ HDassert(udata);
+ HDassert(udata->oh);
+ HDassert(image_len);
+
+ *image_len = udata->size;
FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5O_size() */
+} /* end H5O__cache_chk_get_load_size() */
/*-------------------------------------------------------------------------
- * Function: H5O_cache_chk_load
+ * Function: H5O__cache_chk_deserialize
*
- * Purpose: Loads an object header continuation chunk from disk.
+ * Purpose: Attempt to deserialize the object header continuation chunk
+ * contained in the supplied buffer, load the data into an instance
+ * of H5O_chunk_proxy_t, and return a pointer to the new instance.
*
- * Return: Success: Pointer to the new object header chunk proxy.
- * Failure: NULL
+ * Return: Success: Pointer to in core representation
+ * Failure: NULL
*
- * Programmer: Quincey Koziol
- * koziol@hdfgroup.org
- * Jul 12 2008
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
-static H5O_chunk_proxy_t *
-H5O_cache_chk_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
+static void *
+H5O__cache_chk_deserialize(const void *image, size_t len, void *_udata,
+ hbool_t *dirty)
{
- H5O_chunk_proxy_t *chk_proxy = NULL; /* Chunk proxy object */
- H5O_chk_cache_ud_t *udata = (H5O_chk_cache_ud_t *)_udata; /* User data for callback */
- H5WB_t *wb = NULL; /* Wrapped buffer for prefix data */
- uint8_t chunk_buf[H5O_SPEC_READ_SIZE]; /* Buffer for speculative read */
- uint8_t *buf; /* Buffer to decode */
- H5O_chunk_proxy_t *ret_value; /* Return value */
+ H5O_chunk_proxy_t *chk_proxy = NULL; /* Chunk proxy object */
+ H5O_chk_cache_ud_t *udata = (H5O_chk_cache_ud_t *)_udata; /* User data for callback */
+ void * ret_value; /* Return value */
- FUNC_ENTER_NOAPI_NOINIT
+ FUNC_ENTER_STATIC
/* Check arguments */
- HDassert(f);
- HDassert(H5F_addr_defined(addr));
+ HDassert(image);
+ HDassert(len > 0);
HDassert(udata);
HDassert(udata->oh);
+ HDassert(dirty);
/* Allocate space for the object header data structure */
- if(NULL == (chk_proxy = H5FL_CALLOC(H5O_chunk_proxy_t)))
- HGOTO_ERROR(H5E_OHDR, H5E_CANTALLOC, NULL, "memory allocation failed")
-
- /* Wrap the local buffer for serialized header info */
- if(NULL == (wb = H5WB_wrap(chunk_buf, sizeof(chunk_buf))))
- HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "can't wrap buffer")
-
- /* Get a pointer to a buffer that's large enough for serialized header */
- if(NULL == (buf = (uint8_t *)H5WB_actual(wb, udata->size)))
- HGOTO_ERROR(H5E_OHDR, H5E_NOSPACE, NULL, "can't get actual buffer")
-
- /* Read rest of the raw data */
- if(H5F_block_read(f, H5FD_MEM_OHDR, addr, udata->size, dxpl_id, buf) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_READERROR, NULL, "unable to read object header continuation chunk")
+ if(NULL == (chk_proxy = H5FL_CALLOC(H5O_chunk_proxy_t)))
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTALLOC, NULL, "memory allocation failed")
/* Check if we are still decoding the object header */
/* (as opposed to bringing a piece of it back from the file) */
@@ -719,7 +756,7 @@ H5O_cache_chk_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
HDassert(udata->common.cont_msg_info);
/* Parse the chunk */
- if(H5O__chunk_deserialize(udata->oh, udata->common.addr, udata->size, buf, &(udata->common), &chk_proxy->cache_info.is_dirty) < 0)
+ if(H5O__chunk_deserialize(udata->oh, udata->common.addr, udata->size, (const uint8_t *)image, &(udata->common), dirty) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "can't deserialize object header chunk")
/* Set the fields for the chunk proxy */
@@ -737,7 +774,7 @@ H5O_cache_chk_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
/* Sanity check that the chunk representation we have in memory is
* the same as the one being brought in from disk.
*/
- HDassert(0 == HDmemcmp(buf, chk_proxy->oh->chunk[chk_proxy->chunkno].image, chk_proxy->oh->chunk[chk_proxy->chunkno].size));
+ HDassert(0 == HDmemcmp(image, chk_proxy->oh->chunk[chk_proxy->chunkno].image, chk_proxy->oh->chunk[chk_proxy->chunkno].size));
} /* end else */
/* Increment reference count of object header */
@@ -748,213 +785,195 @@ H5O_cache_chk_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_udata)
ret_value = chk_proxy;
done:
- /* Release resources */
- if(wb && H5WB_unwrap(wb) < 0)
- HDONE_ERROR(H5E_OHDR, H5E_CLOSEERROR, NULL, "can't close wrapped buffer")
-
- /* Release the [possibly partially initialized] object header on errors */
- if(!ret_value && chk_proxy)
- if(H5O__chunk_proxy_dest(chk_proxy) < 0)
- HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, NULL, "unable to destroy object header chunk proxy")
-
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_cache_chk_load() */
+} /* end H5O__cache_chk_deserialize() */
/*-------------------------------------------------------------------------
- * Function: H5O_cache_chk_flush
+ * Function: H5O__cache_chk_image_len
*
- * Purpose: Flushes (and destroys) an object header continuation chunk.
+ * Purpose: Return the on disk image size of a object header chunk to the
+ * metadata cache via the image_len.
*
- * Return: Non-negative on success/Negative on failure
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * Programmer: Quincey Koziol
- * koziol@hdfgroup.org
- * Jul 12 2008
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_cache_chk_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr,
- H5O_chunk_proxy_t *chk_proxy, unsigned H5_ATTR_UNUSED * flags_ptr)
+H5O__cache_chk_image_len(const void *_thing, size_t *image_len,
+ hbool_t H5_ATTR_UNUSED *compressed_ptr, size_t H5_ATTR_UNUSED *compressed_image_len_ptr)
{
- herr_t ret_value = SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI_NOINIT
+ const H5O_chunk_proxy_t * chk_proxy = (const H5O_chunk_proxy_t *)_thing; /* Chunk proxy to query */
- /* flush */
- if(chk_proxy->cache_info.is_dirty) {
- /* Serialize messages for this chunk */
- if(H5O__chunk_serialize(f, chk_proxy->oh, chk_proxy->chunkno) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize object header continuation chunk")
+ FUNC_ENTER_STATIC_NOERR
- /* Write the chunk out */
- HDassert(H5F_addr_defined(chk_proxy->oh->chunk[chk_proxy->chunkno].addr));
- HDassert(H5F_addr_eq(addr, chk_proxy->oh->chunk[chk_proxy->chunkno].addr));
- if(H5F_block_write(f, H5FD_MEM_OHDR, addr, chk_proxy->oh->chunk[chk_proxy->chunkno].size, dxpl_id, chk_proxy->oh->chunk[chk_proxy->chunkno].image) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_WRITEERROR, FAIL, "unable to write object header continuation chunk to disk")
+ /* Check arguments */
+ HDassert(chk_proxy);
+ HDassert(chk_proxy->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(chk_proxy->cache_info.type == H5AC_OHDR_CHK);
+ HDassert(chk_proxy->oh);
+ HDassert(image_len);
- /* Mark object header as clean now */
- chk_proxy->cache_info.is_dirty = FALSE;
- } /* end if */
+ *image_len = chk_proxy->oh->chunk[chk_proxy->chunkno].size;
- /* Destroy the object header, if requested */
- if(destroy)
- if(H5O_cache_chk_dest(f, chk_proxy) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to destroy object header continuation chunk data")
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O__cache_chk_image_len() */
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_cache_chk_flush() */
+/************************************/
+/* no H5O_cache_chk_pre_serialize() */
+/************************************/
/*-------------------------------------------------------------------------
- * Function: H5O_cache_chk_dest
+ * Function: H5O__cache_chk_serialize
*
- * Purpose: Destroys an object header continuation chunk.
+ * Purpose: Given a pointer to an instance of an object header chunk and an
+ * appropriately sized buffer, serialize the contents of the
+ * instance for writing to disk, and copy the serialized data
+ * into the buffer.
*
- * Return: Non-negative on success/Negative on failure
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * Programmer: Quincey Koziol
- * koziol@hdfgroup.org
- * July 12, 2008
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_cache_chk_dest(H5F_t *f, H5O_chunk_proxy_t *chk_proxy)
+H5O__cache_chk_serialize(const H5F_t *f, void *image, size_t len, void *_thing)
{
- herr_t ret_value = SUCCEED; /* Return value */
+ H5O_chunk_proxy_t * chk_proxy = (H5O_chunk_proxy_t *)_thing; /* Object header chunk to serialize */
+ herr_t ret_value = SUCCEED; /* Return value */
- FUNC_ENTER_NOAPI_NOINIT
+ FUNC_ENTER_STATIC
/* Check arguments */
+ HDassert(f);
+ HDassert(image);
HDassert(chk_proxy);
- HDassert(chk_proxy->chunkno > 0);
-
- /* Verify that node is clean */
- HDassert(chk_proxy->cache_info.is_dirty == FALSE);
+ HDassert(chk_proxy->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(chk_proxy->cache_info.type == H5AC_OHDR_CHK);
+ HDassert(chk_proxy->oh);
+ HDassert(chk_proxy->oh->chunk[chk_proxy->chunkno].size == len);
- /* If we're going to free the space on disk, the address must be valid */
- HDassert(!chk_proxy->cache_info.free_file_space_on_destroy || H5F_addr_defined(chk_proxy->cache_info.addr));
-
- /* Check for releasing file space for object header */
- if(chk_proxy->cache_info.free_file_space_on_destroy) {
- /* Release the space on disk */
- /* (XXX: Nasty usage of internal DXPL value! -QAK) */
- if(H5MF_xfree(f, H5FD_MEM_OHDR, H5AC_dxpl_id, chk_proxy->oh->chunk[chk_proxy->chunkno].addr, (hsize_t)chk_proxy->oh->chunk[chk_proxy->chunkno].size) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to free object header continuation chunk")
- } /* end if */
+ /* Serialize messages for this chunk */
+ if(H5O__chunk_serialize(f, chk_proxy->oh, chk_proxy->chunkno) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize object header continuation chunk")
- /* Destroy object header chunk proxy */
- if(H5O__chunk_proxy_dest(chk_proxy) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to destroy object header chunk proxy")
+ /* copy the chunk into the image -- this is potentially expensive.
+ * Can we rework things so that the chunk and the cache share a buffer?
+ */
+ HDmemcpy(image, chk_proxy->oh->chunk[chk_proxy->chunkno].image, len);
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_cache_chk_dest() */
+} /* end H5O__cache_chk_serialize() */
+
+/**************************************/
+/* no H5O_cache_chk_notify() function */
+/**************************************/
/*-------------------------------------------------------------------------
- * Function: H5O_cache_chk_clear
- *
- * Purpose: Mark a object header continuation chunk in memory as non-dirty.
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * koziol@hdfgroup.org
- * July 12, 2008
+ * Function: H5O__cache_chk_free_icr
*
- * Changes: In the parallel case, there is the possibility that the
- * the object header chunk may be flushed by different
- * processes over the life of the computation. Thus we must
- * ensure that the chunk image is up to date before we mark its
- * messages clean -- as otherwise we may overwrite valid
- * data with a blank section of a chunk image.
+ * Purpose: Free the in core memory associated with the supplied object
+ * header continuation chunk.
*
- * To deal with this, I have added code to call
- * H5O_chunk_serialize() for this chunk before we
- * mark all messages as clean if we are not destroying the
- * chunk.
+ * Note: The metadata cache sets the object's cache_info.magic to
+ * H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
+ * callback (checked in assert).
*
- * Do this in the parallel case only, as the problem
- * can only occur in this context.
+ * Return: Success: SUCCEED
+ * Failure: FAIL
*
- * Note that at present at least, it seems that this fix
- * is not necessary, as we don't seem to be able to
- * generate a dirty chunk without creating a dirty object
- * header. However, the object header code will be changing
- * a lot in the near future, so I'll leave this fix in
- * for now, unless Quincey requests otherwise.
- *
- * JRM -- 10/12/10
+ * Programmer: John Mainzer
+ * 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_cache_chk_clear(H5F_t *f, H5O_chunk_proxy_t *chk_proxy, hbool_t destroy)
+H5O__cache_chk_free_icr(void *_thing)
{
- unsigned u; /* Local index variable */
- herr_t ret_value = SUCCEED;
+ H5O_chunk_proxy_t * chk_proxy = (H5O_chunk_proxy_t *)_thing; /* Object header chunk proxy to release */
+ herr_t ret_value = SUCCEED; /* Return value */
- FUNC_ENTER_NOAPI_NOINIT
+ FUNC_ENTER_STATIC
/* Check arguments */
HDassert(chk_proxy);
+ HDassert(chk_proxy->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
+ HDassert(chk_proxy->cache_info.type == H5AC_OHDR_CHK);
-#ifdef H5_HAVE_PARALLEL
- if((chk_proxy->oh->cache_info.is_dirty) && (!destroy))
- if(H5O__chunk_serialize(f, chk_proxy->oh, chk_proxy->chunkno) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize object header chunk")
-#endif /* H5_HAVE_PARALLEL */
-
- /* Mark messages in chunk as clean */
- for(u = 0; u < chk_proxy->oh->nmesgs; u++)
- if(chk_proxy->oh->mesg[u].chunkno == chk_proxy->chunkno)
- chk_proxy->oh->mesg[u].dirty = FALSE;
-
- /* Mark as clean */
- chk_proxy->cache_info.is_dirty = FALSE;
-
- if(destroy)
- if(H5O_cache_chk_dest(f, chk_proxy) < 0)
- HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to destroy object header continuation chunk data")
+ /* Destroy object header chunk proxy */
+ if(H5O__chunk_proxy_dest(chk_proxy) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to destroy object header chunk proxy")
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5O_cache_chk_clear() */
+} /* end H5O__cache_chk_free_icr() */
/*-------------------------------------------------------------------------
- * Function: H5O_cache_chk_size
+ * Function: H5O__cache_chk_clear
*
- * Purpose: Compute the size in bytes of the specified instance of
- * an object header continuation chunk on disk, and return it in
- * *len_ptr. On failure, the value of *len_ptr is undefined.
+ * Purpose: Clear all dirty bits associated with this cache entry.
*
- * Return: Non-negative on success/Negative on failure
+ * This is ncessary as the object header cache client maintains
+ * its own dirty bits on individual messages. These dirty bits
+ * used to be cleared by the old V2 metadata cache flush callback,
+ * but now the metadata cache must clear them explicitly, as
+ * the serialize callback does not imply that the data has been
+ * written to disk.
*
- * Programmer: Quincey Koziol
- * koziol@hdfgroup.org
- * July 12, 2008
+ * This callback is also necessary for the parallel case.
+ *
+ * Return: Success: SUCCEED
+ * Failure: FAIL
+ *
+ * Programmer: John Mainzer
+ * 9/22/14
*
*-------------------------------------------------------------------------
*/
static herr_t
-H5O_cache_chk_size(const H5F_t H5_ATTR_UNUSED *f, const H5O_chunk_proxy_t *chk_proxy, size_t *size_ptr)
-{
- FUNC_ENTER_NOAPI_NOINIT_NOERR
+H5O__cache_chk_clear(const H5F_t *f, void *_thing, hbool_t about_to_destroy)
+{
+ H5O_chunk_proxy_t *chk_proxy = (H5O_chunk_proxy_t *)_thing; /* Object header chunk to reset */
+ H5O_t *oh; /* Object header for chunk */
+ unsigned u; /* Local index variable */
+ herr_t ret_value = SUCCEED; /* Return value */
- /* check args */
+ FUNC_ENTER_STATIC
+
+ /* Check arguments */
HDassert(chk_proxy);
- HDassert(size_ptr);
+ HDassert(chk_proxy->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(chk_proxy->cache_info.type == H5AC_OHDR_CHK);
+ oh = chk_proxy->oh;
+ HDassert(oh);
+ HDassert(oh->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
+ HDassert(oh->cache_info.type == H5AC_OHDR);
- /* Report the object header continuation chunk's length */
- *size_ptr = chk_proxy->oh->chunk[chk_proxy->chunkno].size;
+#ifdef H5_HAVE_PARALLEL
+ if((chk_proxy->oh->cache_info.is_dirty) && (!about_to_destroy))
+ if(H5O__chunk_serialize(f, chk_proxy->oh, chk_proxy->chunkno) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTSERIALIZE, FAIL, "unable to serialize object header chunk")
+#endif /* H5_HAVE_PARALLEL */
- FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5O_cache_chk_size() */
+ /* Mark messages in chunk as clean */
+ for(u = 0; u < chk_proxy->oh->nmesgs; u++)
+ if(chk_proxy->oh->mesg[u].chunkno == chk_proxy->chunkno)
+ chk_proxy->oh->mesg[u].dirty = FALSE;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O__cache_chk_clear() */
/*-------------------------------------------------------------------------
@@ -1024,7 +1043,7 @@ static herr_t
H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image,
H5O_common_cache_ud_t *udata, hbool_t *dirty)
{
- const uint8_t *p; /* Pointer into buffer to decode */
+ const uint8_t *chunk_image; /* Pointer into buffer to decode */
uint8_t *eom_ptr; /* Pointer to end of messages for a chunk */
size_t curmesg; /* Current message being decoded in object header */
unsigned merged_null_msgs = 0; /* Number of null messages merged together */
@@ -1073,18 +1092,18 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
HDmemcpy(oh->chunk[chunkno].image, image, oh->chunk[chunkno].size);
/* Point into chunk image to decode */
- p = oh->chunk[chunkno].image;
+ chunk_image = oh->chunk[chunkno].image;
/* Handle chunk 0 as special case */
if(chunkno == 0)
/* Skip over [already decoded] prefix */
- p += (size_t)(H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh));
+ chunk_image += (size_t)(H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh));
/* Check for magic # on chunks > 0 in later versions of the format */
else if(chunkno > 0 && oh->version > H5O_VERSION_1) {
/* Magic number */
- if(HDmemcmp(p, H5O_CHK_MAGIC, (size_t)H5_SIZEOF_MAGIC))
+ if(HDmemcmp(chunk_image, H5O_CHK_MAGIC, (size_t)H5_SIZEOF_MAGIC))
HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "wrong object header chunk signature")
- p += H5_SIZEOF_MAGIC;
+ chunk_image += H5_SIZEOF_MAGIC;
} /* end if */
/* Save # of messages already inspected */
@@ -1095,7 +1114,7 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
#ifndef NDEBUG
nullcnt = 0;
#endif /* NDEBUG */
- while(p < eom_ptr) {
+ while(chunk_image < eom_ptr) {
size_t mesgno; /* Current message to operate on */
size_t mesg_size; /* Size of message read in */
unsigned id; /* ID (type) of current message */
@@ -1106,20 +1125,20 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
/* Version # */
if(oh->version == H5O_VERSION_1)
- UINT16DECODE(p, id)
+ UINT16DECODE(chunk_image, id)
else
- id = *p++;
+ id = *chunk_image++;
/* Check for unknown message ID getting encoded in file */
if(id == H5O_UNKNOWN_ID)
HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "'unknown' message ID encoded in file?!?")
/* Message size */
- UINT16DECODE(p, mesg_size);
+ UINT16DECODE(chunk_image, mesg_size);
HDassert(mesg_size == H5O_ALIGN_OH(oh, mesg_size));
/* Message flags */
- flags = *p++;
+ flags = *chunk_image++;
if(flags & ~H5O_MSG_FLAG_BITS)
HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "unknown flag for message")
if((flags & H5O_MSG_FLAG_SHARED) && (flags & H5O_MSG_FLAG_DONTSHARE))
@@ -1131,17 +1150,17 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
/* Reserved bytes/creation index */
if(oh->version == H5O_VERSION_1)
- p += 3; /*reserved*/
+ chunk_image += 3; /*reserved*/
else {
/* Only decode creation index if they are being tracked */
if(oh->flags & H5O_HDR_ATTR_CRT_ORDER_TRACKED)
- UINT16DECODE(p, crt_idx);
+ UINT16DECODE(chunk_image, crt_idx);
} /* end else */
/* Try to detect invalidly formatted object header message that
* extends past end of chunk.
*/
- if(p + mesg_size > eom_ptr)
+ if(chunk_image + mesg_size > eom_ptr)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "corrupt object header")
#ifndef NDEBUG
@@ -1177,7 +1196,7 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
oh->mesg[mesgno].flags = flags;
oh->mesg[mesgno].crt_idx = crt_idx;
oh->mesg[mesgno].native = NULL;
- oh->mesg[mesgno].raw = (uint8_t *)p; /* Casting away const OK - QAK */
+ oh->mesg[mesgno].raw = (uint8_t *)chunk_image; /* Casting away const OK - QAK */
oh->mesg[mesgno].raw_size = mesg_size;
oh->mesg[mesgno].chunkno = chunkno;
@@ -1233,10 +1252,10 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
} /* end else */
/* Advance decode pointer past message */
- p += mesg_size;
+ chunk_image += mesg_size;
/* Check for 'gap' at end of chunk */
- if((eom_ptr - p) > 0 && (eom_ptr - p) < H5O_SIZEOF_MSGHDR_OH(oh)) {
+ if((eom_ptr - chunk_image) > 0 && (eom_ptr - chunk_image) < H5O_SIZEOF_MSGHDR_OH(oh)) {
/* Gaps can only occur in later versions of the format */
HDassert(oh->version > H5O_VERSION_1);
@@ -1244,10 +1263,10 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
HDassert(nullcnt == 0);
/* Set gap information for chunk */
- oh->chunk[chunkno].gap = (size_t)(eom_ptr - p);
+ oh->chunk[chunkno].gap = (size_t)(eom_ptr - chunk_image);
/* Increment location in chunk */
- p += oh->chunk[chunkno].gap;
+ chunk_image += oh->chunk[chunkno].gap;
} /* end if */
} /* end while */
@@ -1257,7 +1276,7 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
uint32_t computed_chksum; /* Checksum computed in memory */
/* Metadata checksum */
- UINT32DECODE(p, stored_chksum);
+ UINT32DECODE(chunk_image, stored_chksum);
/* Compute checksum on chunk */
computed_chksum = H5_checksum_metadata(oh->chunk[chunkno].image, (oh->chunk[chunkno].size - H5O_SIZEOF_CHKSUM), 0);
@@ -1268,7 +1287,7 @@ H5O__chunk_deserialize(H5O_t *oh, haddr_t addr, size_t len, const uint8_t *image
} /* end if */
/* Sanity check */
- HDassert(p == oh->chunk[chunkno].image + oh->chunk[chunkno].size);
+ HDassert(chunk_image == oh->chunk[chunkno].image + oh->chunk[chunkno].size);
/* Do some inspection/interpretation of new messages from this chunk */
/* (detect continuation messages, ref. count messages, etc.) */
@@ -1390,7 +1409,7 @@ H5O__chunk_serialize(const H5F_t *f, H5O_t *oh, unsigned chunkno)
/* Extra work, for later versions of the format */
if(oh->version > H5O_VERSION_1) {
uint32_t metadata_chksum; /* Computed metadata checksum value */
- uint8_t *p; /* Pointer into object header chunk */
+ uint8_t *chunk_image; /* Pointer into object header chunk */
/* Check for gap in chunk & zero it out */
if(oh->chunk[chunkno].gap)
@@ -1401,8 +1420,8 @@ H5O__chunk_serialize(const H5F_t *f, H5O_t *oh, unsigned chunkno)
metadata_chksum = H5_checksum_metadata(oh->chunk[chunkno].image, (oh->chunk[chunkno].size - H5O_SIZEOF_CHKSUM), 0);
/* Metadata checksum */
- p = oh->chunk[chunkno].image + (oh->chunk[chunkno].size - H5O_SIZEOF_CHKSUM);
- UINT32ENCODE(p, metadata_chksum);
+ chunk_image = oh->chunk[chunkno].image + (oh->chunk[chunkno].size - H5O_SIZEOF_CHKSUM);
+ UINT32ENCODE(chunk_image, metadata_chksum);
} /* end if */
done:
@@ -1443,5 +1462,5 @@ H5O__chunk_proxy_dest(H5O_chunk_proxy_t *chk_proxy)
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* H5O_chunk_proxy_dest() */
+} /* H5O__chunk_proxy_dest() */