diff options
Diffstat (limited to 'src/H5HLcache.c')
| -rw-r--r-- | src/H5HLcache.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/H5HLcache.c b/src/H5HLcache.c index 39d9789..643d3d6 100644 --- a/src/H5HLcache.c +++ b/src/H5HLcache.c @@ -49,6 +49,12 @@ /* Value indicating end of free list on disk */ #define H5HL_FREE_NULL 1 +/* Set the local heap size to speculatively read in */ +/* (needs to be more than the local heap prefix size to work at all and + * should be larger than the default local heap size to save the + * extra I/O operations) */ +#define H5HL_SPEC_READ_SIZE 512 + /******************/ /* Local Typedefs */ @@ -65,6 +71,7 @@ /********************/ /* Metadata cache callbacks */ +static herr_t H5HL_prfx_get_load_size(const void *_udata, size_t *image_len); static void *H5HL_prfx_deserialize(const void *image, size_t len, void *udata, hbool_t *dirty); static herr_t H5HL_prfx_image_len(const void *thing, size_t *image_len_ptr); @@ -73,6 +80,7 @@ static herr_t H5HL_prfx_serialize(const H5F_t *f, hid_t dxpl_id, haddr_t addr, s size_t *new_len, void **new_image); static herr_t H5HL_prfx_free_icr(void *thing); +static herr_t H5HL_dblk_get_load_size(const void *_udata, size_t *image_len); static void *H5HL_dblk_deserialize(const void *image, size_t len, void *udata, hbool_t *dirty); static herr_t H5HL_dblk_serialize(const H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t len, @@ -92,6 +100,7 @@ const H5AC_class_t H5AC_LHEAP_PRFX[1] = {{ H5AC_LHEAP_PRFX_ID, "local heap prefix", H5FD_MEM_LHEAP, + H5HL_prfx_get_load_size, H5HL_prfx_deserialize, H5HL_prfx_image_len, H5HL_prfx_serialize, @@ -105,6 +114,7 @@ const H5AC_class_t H5AC_LHEAP_DBLK[1] = {{ H5AC_LHEAP_DBLK_ID, "local heap data block", H5FD_MEM_LHEAP, + H5HL_dblk_get_load_size, H5HL_dblk_deserialize, NULL, H5HL_dblk_serialize, @@ -230,6 +240,37 @@ H5HL_fl_serialize(const H5HL_t *heap) /*------------------------------------------------------------------------- + * Function: H5HL_prfx_get_load_size + * + * Purpose: Compute the size of the data structure on disk. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * May 18, 2010 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5HL_prfx_get_load_size(const void *_udata, size_t *image_len) +{ + const H5HL_cache_prfx_ud_t *udata = (const H5HL_cache_prfx_ud_t *)_udata; /* User data for callback */ + + FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_prfx_get_load_size) + + /* Check arguments */ + HDassert(udata); + HDassert(image_len); + + /* Set the image length size */ + *image_len = H5HL_SPEC_READ_SIZE; + + FUNC_LEAVE_NOAPI(SUCCEED) +} /* end H5HL_prfx_get_load_size() */ + + +/*------------------------------------------------------------------------- * Function: H5HL_prfx_deserialize * * Purpose: Deserialize the data structure from disk. @@ -491,6 +532,37 @@ done: /*------------------------------------------------------------------------- + * Function: H5HL_dblk_get_load_size + * + * Purpose: Compute the size of the data structure on disk. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * May 18, 2010 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5HL_dblk_get_load_size(const void *_udata, size_t *image_len) +{ + const H5HL_cache_dblk_ud_t *udata = (const H5HL_cache_dblk_ud_t *)_udata; /* User data for callback */ + + FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_dblk_get_load_size) + + /* Check arguments */ + HDassert(udata); + HDassert(image_len); + + /* Set the image length size */ + *image_len = udata->heap->dblk_size; + + FUNC_LEAVE_NOAPI(SUCCEED) +} /* end H5HL_dblk_get_load_size() */ + + +/*------------------------------------------------------------------------- * Function: H5HL_dblk_deserialize * * Purpose: Deserialize the data structure from disk. |