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[svn-r2500] Added fields to file data structures to allow metadata aggregation and

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accumulation to be enabled and tracked.  Also updated some prototypes.
This commit is contained in:
Quincey Koziol 2000-08-31 14:35:44 -05:00
parent 8420b10455
commit 2910c496e1
1 changed files with 34 additions and 2 deletions
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36
src/H5FDpublic.h
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@ -74,6 +74,22 @@ typedef enum H5FD_mem_t {
}
/* Define VFL driver features that can be enabled on a per-driver basis */
/* These are returned queried with the 'query' function pointer in H5FD_class_t */
/*
* Defining the H5FD_FEAT_AGGREGATE_METADATA for a VFL driver means that
* the library will attempt to allocate a larger block for metadata and
* then sub-allocate each metadata request from that larger block.
*/
#define H5FD_FEAT_AGGREGATE_METADATA 0x00000001
/*
* Defining the H5FD_FEAT_ACCUMULATE_METADATA for a VFL driver means that
* the library will attempt to cache metadata as it is written to the file
* and build up a larger block of metadata to eventually pass to the VFL
* 'write' routine.
*/
#define H5FD_FEAT_ACCUMULATE_METADATA 0x00000002
/* Forward declaration */
typedef struct H5FD_t H5FD_t;
@ -97,6 +113,7 @@ typedef struct H5FD_class_t {
haddr_t maxaddr);
herr_t (*close)(H5FD_t *file);
int (*cmp)(const H5FD_t *f1, const H5FD_t *f2);
herr_t (*query)(const H5FD_t *f1, unsigned long *flags);
haddr_t (*alloc)(H5FD_t *file, H5FD_mem_t type, hsize_t size);
herr_t (*free)(H5FD_t *file, H5FD_mem_t type, haddr_t addr, hsize_t size);
haddr_t (*get_eoa)(H5FD_t *file);
@ -104,7 +121,7 @@ typedef struct H5FD_class_t {
haddr_t (*get_eof)(H5FD_t *file);
herr_t (*read)(H5FD_t *file, hid_t dxpl, haddr_t addr, hsize_t size,
void *buffer);
herr_t (*write)(H5FD_t *file, hid_t dxpl, haddr_t addr, hsize_t size,
herr_t (*write)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl, haddr_t addr, hsize_t size,
const void *buffer);
herr_t (*flush)(H5FD_t *file);
H5FD_mem_t fl_map[H5FD_MEM_NTYPES];
@ -124,6 +141,21 @@ typedef struct H5FD_free_t {
struct H5FD_t {
hid_t driver_id; /*driver ID for this file */
const H5FD_class_t *cls; /*constant class info */
unsigned long feature_flags; /* VFL Driver feature Flags */
/* Metadata aggregation fields */
hsize_t def_meta_block_size; /* Metadata allocation block size (if aggregating metadata) */
hsize_t cur_meta_block_size; /* Current size of metadata allocation region left */
haddr_t eoma; /* End of metadata allocated region */
/* Metadata accumulator fields */
unsigned char *meta_accum; /* Buffer to hold the accumulated metadata */
haddr_t accum_loc; /* File location (offset) of the accumulated metadata */
hsize_t accum_size; /* Size of the accumulated metadata buffer used (in bytes) */
hsize_t accum_buf_size; /* Size of the accumulated metadata buffer allocated (in bytes) */
unsigned accum_dirty; /* Flag to indicate that the accumulated metadata is dirty */
haddr_t maxaddr; /*for this file, overrides class*/
H5FD_free_t *fl[H5FD_MEM_NTYPES];/*freelist per allocation type*/
hsize_t maxsize; /*largest object on FL, or zero */
@ -149,7 +181,7 @@ __DLL__ herr_t H5FDset_eoa(H5FD_t *file, haddr_t eof);
__DLL__ haddr_t H5FDget_eof(H5FD_t *file);
__DLL__ herr_t H5FDread(H5FD_t *file, hid_t dxpl_id, haddr_t addr, hsize_t size,
void *buf/*out*/);
__DLL__ herr_t H5FDwrite(H5FD_t *file, hid_t dxpl_id, haddr_t addr, hsize_t size,
__DLL__ herr_t H5FDwrite(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t size,
const void *buf);
__DLL__ herr_t H5FDflush(H5FD_t *file);