Merge pull request #165 in HDFFV/hdf5 from ~KOZIOL/hdf5:develop_merge_revise_chunks_09 to develop

* commit '3b0c2b24da5689990c4bc0fcd3afecdf063086c8':
  Bring over support for retrying metadata cache entry loads, along with all the supporting metadata cache callback changes, etc.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 35c7b5a..2aac18f 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -286,6 +286,7 @@
 #define H5F_FILE_ID(F)          ((F)->file_id)
 #define H5F_PARENT(F)           ((F)->parent)
 #define H5F_NMOUNTS(F)          ((F)->nmounts)
+#define H5F_GET_READ_ATTEMPTS(F) ((F)->shared->read_attempts)
 #define H5F_DRIVER_ID(F)        ((F)->shared->lf->driver_id)
 #define H5F_GET_FILENO(F,FILENUM) ((FILENUM) = (F)->shared->lf->fileno)
 #define H5F_HAS_FEATURE(F,FL)   ((F)->shared->lf->feature_flags & (FL))
@@ -335,6 +336,7 @@
 #define H5F_FILE_ID(F)          (H5F_get_file_id(F))
 #define H5F_PARENT(F)           (H5F_get_parent(F))
 #define H5F_NMOUNTS(F)          (H5F_get_nmounts(F))
+#define H5F_GET_READ_ATTEMPTS(F) (H5F_get_read_attempts(F))
 #define H5F_DRIVER_ID(F)        (H5F_get_driver_id(F))
 #define H5F_GET_FILENO(F,FILENUM) (H5F_get_fileno((F), &(FILENUM)))
 #define H5F_HAS_FEATURE(F,FL)   (H5F_has_feature(F,FL))
@@ -467,6 +469,7 @@
 #define H5F_ACS_MULTI_TYPE_NAME                 "multi_type"    /* Data type in multi file driver */
 #define H5F_ACS_LATEST_FORMAT_NAME              "latest_format" /* 'Use latest format version' flag */
 #define H5F_ACS_WANT_POSIX_FD_NAME              "want_posix_fd" /* Internal: query the file descriptor from the core VFD, instead of the memory address */
+#define H5F_ACS_METADATA_READ_ATTEMPTS_NAME     "metadata_read_attempts" /* # of metadata read attempts */
 #define H5F_ACS_OBJECT_FLUSH_CB_NAME     	"object_flush_cb" 	 /* Object flush callback */
 #define H5F_ACS_EFC_SIZE_NAME                   "efc_size"      /* Size of external file cache */
 #define H5F_ACS_FILE_IMAGE_INFO_NAME            "file_image_info" /* struct containing initial file image and callback info */
@@ -518,12 +521,19 @@
 /* Default free space section threshold used by free-space managers */
 #define H5F_FREE_SPACE_THRESHOLD_DEF	        1
 
+/* Metadata read attempt values */
+#define H5F_METADATA_READ_ATTEMPTS		1	/* Default # of read attempts for non-SWMR access */
+
 /* Macros to define signatures of all objects in the file */
 
 /* Size of signature information (on disk) */
 /* (all on-disk signatures should be this length) */
 #define H5_SIZEOF_MAGIC                 4
 
+/* Size of checksum information (on disk) */
+/* (all on-disk checksums should be this length) */
+#define H5_SIZEOF_CHKSUM              	4
+
 /* v1 B-tree node signature */
 #define H5B_MAGIC	                "TREE"
 
@@ -652,6 +662,7 @@ H5_DLL unsigned H5F_decr_nopen_objs(H5F_t *f);
 H5_DLL hid_t H5F_get_file_id(const H5F_t *f);
 H5_DLL H5F_t *H5F_get_parent(const H5F_t *f);
 H5_DLL unsigned H5F_get_nmounts(const H5F_t *f);
+H5_DLL unsigned H5F_get_read_attempts(const H5F_t *f);
 H5_DLL hid_t H5F_get_access_plist(H5F_t *f, hbool_t app_ref);
 H5_DLL hid_t H5F_get_id(H5F_t *file, hbool_t app_ref);
 H5_DLL herr_t H5F_get_obj_count(const H5F_t *f, unsigned types, hbool_t app_ref, size_t *obj_id_count_ptr);
@@ -716,6 +727,13 @@ H5_DLL herr_t H5F_block_write(const H5F_t *f, H5FD_mem_t type, haddr_t addr,
 H5_DLL herr_t H5F_flush_tagged_metadata(H5F_t * f, haddr_t tag, hid_t dxpl_id);
 H5_DLL herr_t H5F_evict_tagged_metadata(H5F_t * f, haddr_t tag, hid_t dxpl_id);
 
+/* Functions that verify a piece of metadata with checksum */
+H5_DLL herr_t H5F_get_checksums(const uint8_t *buf, size_t chk_size, uint32_t *s_chksum, uint32_t *c_chksum);
+
+/* Routine to track the # of retries */
+H5_DLL herr_t H5F_track_metadata_read_retries(H5F_t *f, unsigned actype, unsigned retries);
+H5_DLL herr_t H5F_set_retries(H5F_t *f);
+
 /* Routine to invoke callback function upon object flush */
 H5_DLL herr_t H5F_object_flush_cb(H5F_t *f, hid_t obj_id);