Preliminary checkins for implementation done so far:

1) Public routines: H5Pget/set_vfd_swmr_config
2) Public routine: H5Fvfd_swmr_end_tick
3) Initialization when opening a file with VFD SWMR writer
4) Tests in test/vfd_swmr.c for VFD SWMR
5) Fix a bug in src/H5Fint.c: when error is encountered after the root group is created
Note the following:
--This is WORK IN PROGRESS and will subject to change as implementation goes.
--There is test failure form enc_dec_plist.c: I will fix this when changes to the property list are settled.
--The branch is updated with the latest from develop as of 8/14/2018

1 files changed, 9 insertions, 0 deletions

diff --git a/src/H5Fpkg.h b/src/H5Fpkg.h
index 2ab41de..19c49fb 100644
--- a/src/H5Fpkg.h
+++ b/src/H5Fpkg.h
@@ -353,6 +353,15 @@ struct H5F_file_t {
 
     /* Object flush info */
     H5F_object_flush_t 	object_flush;	    /* Information for object flush callback */
+
+    /* VFD SWMR configuration info */
+    H5F_vfd_swmr_config_t vfd_swmr_config;  /* Copy of the VFD SWMR configuration from the
+                                               FAPL used to open the file */
+    hbool_t vfd_swmr;                       /* The file is opened with VFD SWMR configured or not*/
+    hbool_t vfd_swmr_writer;                /* This is the VFD SWMR writer or not */
+    uint64_t tick_num;                      /* Number of the current tick */
+    struct timespec end_of_tick;            /* End time of the current tick */
+    int vfd_swmr_md_fd;                     /* POSIX: file descriptor of the metadata file */
 };
 
 /*