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-rw-r--r--src/H5Tref.c99
-rw-r--r--src/H5VLcallback.c68
-rw-r--r--src/H5VLconnector.h3
-rw-r--r--src/H5VLnative_file.c13
4 files changed, 152 insertions, 31 deletions
diff --git a/src/H5Tref.c b/src/H5Tref.c
index 20c6e41..ad00761 100644
--- a/src/H5Tref.c
+++ b/src/H5Tref.c
@@ -280,10 +280,12 @@ static size_t
H5T__ref_mem_getsize(H5VL_object_t H5_ATTR_UNUSED *src_file, const void *src_buf,
size_t H5_ATTR_UNUSED src_size, H5VL_object_t *dst_file, hbool_t *dst_copy)
{
- H5F_t *src_f;
- H5F_t *dst_f;
H5VL_object_t *vol_obj = NULL;
const H5R_ref_priv_t *src_ref = (const H5R_ref_priv_t *)src_buf;
+ hbool_t files_equal = FALSE;
+ char file_name_buf_static[256];
+ char *file_name_buf_dyn = NULL;
+ ssize_t file_name_len;
unsigned flags = 0;
size_t ret_value = 0;
@@ -296,27 +298,43 @@ H5T__ref_mem_getsize(H5VL_object_t H5_ATTR_UNUSED *src_file, const void *src_buf
if(NULL == (vol_obj = H5VL_vol_object(src_ref->loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid location identifier")
- /* We should assert here that the terminal connector is H5VL_NATIVE once
- * there is a facility to do so -NAF 2019/10/30 */
-
- /* Retrieve files from VOL objects */
- if(NULL == (src_f = (H5F_t *)H5VL_object_data(vol_obj)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid VOL object")
- if(NULL == (dst_f = (H5F_t *)H5VL_object_data(dst_file)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid VOL object")
-
/* Set external flag if referenced file is not destination file */
- flags |= (src_f->shared != dst_f->shared) ? H5R_IS_EXTERNAL : 0;
+ if(H5VL_file_specific(vol_obj, H5VL_FILE_IS_EQUAL, H5P_DATASET_XFER_DEFAULT, NULL, dst_file, &files_equal) < 0)
+ HGOTO_ERROR(H5E_REFERENCE, H5E_CANTCOMPARE, 0, "can't check if files are equal")
+ flags |= files_equal ? H5R_IS_EXTERNAL : 0;
/* Force re-calculating encoding size if any flags are set */
if(flags || !src_ref->encode_size) {
/* Pass the correct encoding version for the selection depending on the
* file libver bounds, this is later retrieved in H5S hyper encode */
- if(src_ref->type == (int8_t)H5R_DATASET_REGION2)
- H5CX_set_libver_bounds(dst_f);
+ if(src_ref->type == (int8_t)H5R_DATASET_REGION2) {
+ /* Temporary hack to check if this is the native connector. We need to
+ * add a way to check if the terminal connector is native. For now this
+ * will break passthroughs, but it's needed for other VOL connectors to
+ * work. -NAF */
+ if(dst_file->connector->cls->value == H5VL_NATIVE_VALUE) {
+ H5F_t *dst_f;
+
+ if(NULL == (dst_f = (H5F_t *)H5VL_object_data(dst_file)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid VOL object")
+ H5CX_set_libver_bounds(dst_f);
+ } /* end if */
+ else
+ H5CX_set_libver_bounds(NULL);
+ } /* end if */
+
+ /* Get file name */
+ if(H5VL_file_get(vol_obj, H5VL_FILE_GET_NAME, H5P_DATASET_XFER_DEFAULT, NULL, sizeof(file_name_buf_static), file_name_buf_static, &file_name_len) < 0)
+ HGOTO_ERROR(H5E_REFERENCE, H5E_CANTGET, 0, "can't get file name")
+ if(file_name_len >= (ssize_t)sizeof(file_name_buf_static)) {
+ if(NULL == (file_name_buf_dyn = (char *)H5MM_malloc((size_t)file_name_len + 1)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, 0, "can't allocate space for file name")
+ if(H5VL_file_get(vol_obj, H5VL_FILE_GET_NAME, H5P_DATASET_XFER_DEFAULT, NULL, (size_t)file_name_len + 1, file_name_buf_dyn, &file_name_len) < 0)
+ HGOTO_ERROR(H5E_REFERENCE, H5E_CANTGET, 0, "can't get file name")
+ } /* end if */
/* Determine encoding size */
- if(H5R__encode(H5F_ACTUAL_NAME(src_f), src_ref, NULL, &ret_value, flags) < 0)
+ if(H5R__encode(file_name_buf_dyn ? file_name_buf_dyn : file_name_buf_static, src_ref, NULL, &ret_value, flags) < 0)
HGOTO_ERROR(H5E_REFERENCE, H5E_CANTENCODE, 0, "unable to determine encoding size")
} else {
/* Can do a direct copy and skip blob decoding */
@@ -328,6 +346,8 @@ H5T__ref_mem_getsize(H5VL_object_t H5_ATTR_UNUSED *src_file, const void *src_buf
}
done:
+ H5MM_xfree(file_name_buf_dyn);
+
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5T__ref_mem_getsize() */
@@ -346,10 +366,12 @@ H5T__ref_mem_read(H5VL_object_t H5_ATTR_UNUSED *src_file, const void *src_buf,
size_t H5_ATTR_UNUSED src_size, H5VL_object_t *dst_file, void *dst_buf,
size_t dst_size)
{
- H5F_t *src_f;
- H5F_t *dst_f;
H5VL_object_t *vol_obj = NULL;
const H5R_ref_priv_t *src_ref = (const H5R_ref_priv_t *)src_buf;
+ hbool_t files_equal = FALSE;
+ char file_name_buf_static[256];
+ char *file_name_buf_dyn = NULL;
+ ssize_t file_name_len;
unsigned flags = 0;
herr_t ret_value = SUCCEED;
@@ -365,25 +387,41 @@ H5T__ref_mem_read(H5VL_object_t H5_ATTR_UNUSED *src_file, const void *src_buf,
if(NULL == (vol_obj = H5VL_vol_object(src_ref->loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid location identifier")
- /* We should assert here that the terminal connector is H5VL_NATIVE once
- * there is a facility to do so -NAF 2019/10/30 */
-
- /* Retrieve files from VOL objects */
- if(NULL == (src_f = (H5F_t *)H5VL_object_data(vol_obj)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid VOL object")
- if(NULL == (dst_f = (H5F_t *)H5VL_object_data(dst_file)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid VOL object")
-
/* Set external flag if referenced file is not destination file */
- flags |= (src_f->shared != dst_f->shared) ? H5R_IS_EXTERNAL : 0;
+ if(H5VL_file_specific(vol_obj, H5VL_FILE_IS_EQUAL, H5P_DATASET_XFER_DEFAULT, NULL, dst_file, &files_equal) < 0)
+ HGOTO_ERROR(H5E_REFERENCE, H5E_CANTCOMPARE, FAIL, "can't check if files are equal")
+ flags |= files_equal ? H5R_IS_EXTERNAL : 0;
/* Pass the correct encoding version for the selection depending on the
* file libver bounds, this is later retrieved in H5S hyper encode */
- if(src_ref->type == (int8_t)H5R_DATASET_REGION2)
- H5CX_set_libver_bounds(dst_f);
+ if(src_ref->type == (int8_t)H5R_DATASET_REGION2) {
+ /* Temporary hack to check if this is the native connector. We need to
+ * add a way to check if the terminal connector is native. For now this
+ * will break passthroughs, but it's needed for other VOL connectors to
+ * work. -NAF */
+ if(dst_file->connector->cls->value == H5VL_NATIVE_VALUE) {
+ H5F_t *dst_f;
+
+ if(NULL == (dst_f = (H5F_t *)H5VL_object_data(dst_file)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "invalid VOL object")
+ H5CX_set_libver_bounds(dst_f);
+ } /* end if */
+ else
+ H5CX_set_libver_bounds(NULL);
+ } /* end if */
+
+ /* Get file name */
+ if(H5VL_file_get(vol_obj, H5VL_FILE_GET_NAME, H5P_DATASET_XFER_DEFAULT, NULL, sizeof(file_name_buf_static), file_name_buf_static, &file_name_len) < 0)
+ HGOTO_ERROR(H5E_REFERENCE, H5E_CANTGET, 0, "can't get file name")
+ if(file_name_len >= (ssize_t)sizeof(file_name_buf_static)) {
+ if(NULL == (file_name_buf_dyn = (char *)H5MM_malloc((size_t)file_name_len + 1)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, 0, "can't allocate space for file name")
+ if(H5VL_file_get(vol_obj, H5VL_FILE_GET_NAME, H5P_DATASET_XFER_DEFAULT, NULL, (size_t)file_name_len + 1, file_name_buf_dyn, &file_name_len) < 0)
+ HGOTO_ERROR(H5E_REFERENCE, H5E_CANTGET, 0, "can't get file name")
+ } /* end if */
/* Encode reference */
- if(H5R__encode(H5F_ACTUAL_NAME(src_f), src_ref, (unsigned char *)dst_buf, &dst_size, flags) < 0)
+ if(H5R__encode(file_name_buf_dyn ? file_name_buf_dyn : file_name_buf_static, src_ref, (unsigned char *)dst_buf, &dst_size, flags) < 0)
HGOTO_ERROR(H5E_REFERENCE, H5E_CANTENCODE, FAIL, "Cannot encode reference")
done:
@@ -827,3 +865,4 @@ H5T_ref_reclaim(void *elem, const H5T_t *dt)
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5T_ref_reclaim() */
+
diff --git a/src/H5VLcallback.c b/src/H5VLcallback.c
index 8d7368b..b20494a 100644
--- a/src/H5VLcallback.c
+++ b/src/H5VLcallback.c
@@ -101,6 +101,8 @@ static void * H5VL__file_open(const H5VL_class_t *cls, const char *name,
unsigned flags, hid_t fapl_id, hid_t dxpl_id, void **req);
static herr_t H5VL__file_get(void *obj, const H5VL_class_t *cls, H5VL_file_get_t get_type,
hid_t dxpl_id, void **req, va_list arguments);
+static herr_t H5VL__file_specific_wrap_va_list(void *obj, const H5VL_class_t *cls,
+ H5VL_file_specific_t specific_type, hid_t dxpl_id, void **req, ...);
static herr_t H5VL__file_specific(void *obj, const H5VL_class_t *cls, H5VL_file_specific_t specific_type,
hid_t dxpl_id, void **req, va_list arguments);
static herr_t H5VL__file_optional(void *obj, const H5VL_class_t *cls, hid_t dxpl_id,
@@ -2989,6 +2991,43 @@ done:
/*-------------------------------------------------------------------------
+ * Function: H5VL__file_specific_wrap_va_list
+ *
+ * Purpose: Perform File specific operations through the VOL. Just
+ * starts a va_list and passes it to the connector's
+ * callback. Needed when the VOL layer needs to replace one
+ * of the variable arguments.
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5VL__file_specific_wrap_va_list(void *obj, const H5VL_class_t *cls,
+ H5VL_file_specific_t specific_type, hid_t dxpl_id, void **req, ...)
+{
+ va_list arguments; /* Argument list passed from the API call */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_STATIC
+
+ /* Start access to the varargs, so they are available in all situations below */
+ HDva_start(arguments, req);
+
+ /* Call the corresponding VOL callback */
+ if((cls->file_cls.specific)(obj, specific_type, dxpl_id, req, arguments) < 0)
+ HGOTO_ERROR(H5E_VOL, H5E_CANTOPERATE, FAIL, "file specific failed")
+
+done:
+ /* End access to the va_list */
+ HDva_end(arguments);
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5VL__file_specific_wrap_va_list() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5VL__file_specific
*
* Purpose: Perform File specific operations through the VOL
@@ -3010,6 +3049,35 @@ H5VL__file_specific(void *obj, const H5VL_class_t *cls, H5VL_file_specific_t spe
if(NULL == cls->file_cls.specific)
HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "VOL connector has no 'file specific' method")
+ /* Special handling for file is equal */
+ if(specific_type == H5VL_FILE_IS_EQUAL) {
+ va_list tmp_args; /* Argument list passed from the API call */
+ H5VL_object_t *vol_obj2; /* Second VOL object */
+ hbool_t *is_equal; /* Output variable */
+ int cmp_value; /* Comparison result */
+
+ /* Get parameters */
+ HDva_copy(tmp_args, arguments);
+ vol_obj2 = HDva_arg(tmp_args, H5VL_object_t *);
+ is_equal = HDva_arg(tmp_args, hbool_t *);
+ HDva_end(tmp_args);
+
+ HDassert(vol_obj2);
+
+ /* Compare connector classes */
+ if(H5VL_cmp_connector_cls(&cmp_value, cls, vol_obj2->connector->cls) < 0)
+ HGOTO_ERROR(H5E_VOL, H5E_CANTCOMPARE, FAIL, "can't compare connector classes")
+
+ /* If the classes are different the files are different */
+ if(cmp_value)
+ *is_equal = FALSE;
+ else
+ /* Make callback (need to extract data from vol_obj2 and redo the
+ * va_list) */
+ if(H5VL__file_specific_wrap_va_list(obj, cls, specific_type, dxpl_id, req, vol_obj2->data, is_equal) < 0)
+ HGOTO_ERROR(H5E_VOL, H5E_CANTOPERATE, FAIL, "file specific failed")
+ } /* end if */
+
/* Call the corresponding VOL callback */
if((cls->file_cls.specific)(obj, specific_type, dxpl_id, req, arguments) < 0)
HGOTO_ERROR(H5E_VOL, H5E_CANTOPERATE, FAIL, "file specific failed")
diff --git a/src/H5VLconnector.h b/src/H5VLconnector.h
index 0012eeb..f0925bf 100644
--- a/src/H5VLconnector.h
+++ b/src/H5VLconnector.h
@@ -122,7 +122,8 @@ typedef enum H5VL_file_specific_t {
H5VL_FILE_MOUNT, /* Mount a file */
H5VL_FILE_UNMOUNT, /* Unmount a file */
H5VL_FILE_IS_ACCESSIBLE, /* Check if a file is accessible */
- H5VL_FILE_DELETE /* Delete a file */
+ H5VL_FILE_DELETE, /* Delete a file */
+ H5VL_FILE_IS_EQUAL /* Check if two files are the same */
} H5VL_file_specific_t;
/* types for group GET callback */
diff --git a/src/H5VLnative_file.c b/src/H5VLnative_file.c
index 3bda0b8..588d59f 100644
--- a/src/H5VLnative_file.c
+++ b/src/H5VLnative_file.c
@@ -418,6 +418,19 @@ H5VL__native_file_specific(void *obj, H5VL_file_specific_t specific_type,
break;
}
+ /* Check if two files are the same */
+ case H5VL_FILE_IS_EQUAL:
+ {
+ H5F_t *file2 = (H5F_t *)HDva_arg(arguments, void *);
+ hbool_t *is_equal = HDva_arg(arguments, hbool_t *);
+
+ if(!obj || !file2)
+ *is_equal = FALSE;
+ else
+ *is_equal = (((H5F_t *)obj)->shared == file2->shared);
+ break;
+ }
+
default:
HGOTO_ERROR(H5E_VOL, H5E_UNSUPPORTED, FAIL, "invalid specific operation")
} /* end switch */
generated by cgit v0.12 at 2024-10-30 03:37:35 (GMT)