diff options
Diffstat (limited to 'src/H5HGpkg.h')
| -rw-r--r-- | src/H5HGpkg.h | 86 |
1 files changed, 84 insertions, 2 deletions
diff --git a/src/H5HGpkg.h b/src/H5HGpkg.h index e814367..f526d00 100644 --- a/src/H5HGpkg.h +++ b/src/H5HGpkg.h @@ -32,13 +32,17 @@ #include "H5HGprivate.h" /* Other private headers needed by this file */ +#include "H5AC2private.h" /* Metadata cache */ + +#define H5F_PACKAGE +#include "H5Fpkg.h" /*****************************/ /* Package Private Variables */ /*****************************/ /* The cache subclass */ -H5_DLLVAR const H5AC_class_t H5AC_GHEAP[1]; +H5_DLLVAR const H5AC2_class_t H5AC2_GHEAP[1]; /**************************/ /* Package Private Macros */ @@ -65,6 +69,71 @@ H5_DLLVAR const H5AC_class_t H5AC_GHEAP[1]; 4 + /*reserved */ \ H5F_SIZEOF_SIZE(f)) /*object data size */ +/* + * Global heap collection version. + */ +#define H5HG_VERSION 1 + +/* + * All global heap collections are at least this big. This allows us to read + * most collections with a single read() since we don't have to read a few + * bytes of header to figure out the size. If the heap is larger than this + * then a second read gets the rest after we've decoded the header. + */ +#define H5HG_MINSIZE 4096 + +/* + * Limit global heap collections to the some reasonable size. This is + * fairly arbitrary, but needs to be small enough that no more than H5HG_MAXIDX + * objects will be allocated from a single heap. + */ +#define H5HG_MAXSIZE 65536 + +/* + * Maximum length of the CWFS list, the list of remembered collections that + * have free space. + */ +#define H5HG_NCWFS 16 + +/* + * The maximum number of links allowed to a global heap object. + */ +#define H5HG_MAXLINK 65535 + +/* + * The maximum number of indices allowed in a global heap object. + */ +#define H5HG_MAXIDX 65535 + +/* + * The size of the collection header, always a multiple of the alignment so + * that the stuff that follows the header is aligned. + */ +#define H5HG_SIZEOF_HDR(f) \ + H5HG_ALIGN(4 + /*magic number */ \ + 1 + /*version number */ \ + 3 + /*reserved */ \ + H5F_SIZEOF_SIZE(f)) /*collection size */ + +/* + * The initial guess for the number of messages in a collection. We assume + * that all objects in that collection are zero length, giving the maximum + * possible number of objects in the collection. The collection itself has + * some overhead and each message has some overhead. The `+2' accounts for + * rounding and for the free space object. + */ +#define H5HG_NOBJS(f,z) (int)((((z)-H5HG_SIZEOF_HDR(f))/ \ + H5HG_SIZEOF_OBJHDR(f)+2)) + +/* + * Makes a global heap object pointer undefined, or checks whether one is + * defined. + */ +#define H5HG_undef(HGP) ((HGP)->idx=0) +#define H5HG_defined(HGP) ((HGP)->idx!=0) + +#define H5HG_SPEC_READ_SIZE 4096 + /****************************/ /* Package Private Typedefs */ /****************************/ @@ -76,7 +145,7 @@ typedef struct H5HG_obj_t { } H5HG_obj_t; struct H5HG_heap_t { - H5AC_info_t cache_info; /* Information for H5AC cache functions, _must_ be */ + H5AC2_info_t cache_info; /* Information for H5AC2 cache functions, _must_ be */ /* first field in structure */ haddr_t addr; /*collection address */ size_t size; /*total size of collection */ @@ -86,6 +155,7 @@ struct H5HG_heap_t { /* If this value is >65535 then all indices */ /* have been used at some time and the */ /* correct new index should be searched for */ + H5F_file_t *shared; /* shared file */ H5HG_obj_t *obj; /*array of object descriptions */ }; @@ -93,5 +163,17 @@ struct H5HG_heap_t { /* Package Private Prototypes */ /******************************/ +H5_DLL herr_t H5HG_dest(H5HG_heap_t *heap); + +/* Declare a free list to manage the H5HG_t struct */ +H5FL_EXTERN(H5HG_heap_t); + +/* Declare a free list to manage sequences of H5HG_obj_t's */ +H5FL_SEQ_EXTERN(H5HG_obj_t); + +/* Declare a PQ free list to manage heap chunks */ +H5FL_BLK_EXTERN(heap_chunk); + + #endif |