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-rw-r--r--src/H5FDpublic.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/H5FDpublic.h b/src/H5FDpublic.h
index 4931e0f..436be10 100644
--- a/src/H5FDpublic.h
+++ b/src/H5FDpublic.h
@@ -234,6 +234,11 @@ typedef enum H5F_mem_t H5FD_mem_t;
* image to store in memory.
*/
#define H5FD_FEAT_CAN_USE_FILE_IMAGE_CALLBACKS 0x00000800
+ /*
+ * Defining H5FD_FEAT_SUPPORTS_SWMR_IO for a VFL driver means that the
+ * driver supports the single-writer/multiple-readers I/O pattern.
+ */
+#define H5FD_FEAT_SUPPORTS_SWMR_IO 0x00001000
/* Forward declaration */
typedef struct H5FD_t H5FD_t;
@@ -294,6 +299,7 @@ struct H5FD_t {
hid_t driver_id; /*driver ID for this file */
const H5FD_class_t *cls; /*constant class info */
unsigned long fileno; /* File 'serial' number */
+ unsigned access_flags; /* File access flags (from create or open) */
unsigned long feature_flags; /* VFL Driver feature Flags */
haddr_t maxaddr; /* For this file, overrides class */
haddr_t base_addr; /* Base address for HDF5 data w/in file */