diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5FDpublic.h | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/src/H5FDpublic.h b/src/H5FDpublic.h index eb65f8e..c97f76b 100644 --- a/src/H5FDpublic.h +++ b/src/H5FDpublic.h @@ -73,6 +73,22 @@ typedef enum H5FD_mem_t { H5FD_MEM_DEFAULT /*ohdr*/ \ } + +/* 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 */ @@ -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); |