1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*-
* vim: ts=8 sts=4 sw=4 noexpandtab
*
* Copyright (C) 1997 University of Chicago.
* See COPYRIGHT notice in top-level directory.
*/
#ifndef _AD_ZOIDFS_COMMON_H
#define _AD_ZOIDFS_COMMON_H
#include "ad_zoidfs.h"
/* The ESTALE problem:
* The IO forwarding protocol can respond to any call with ESTALE, which means
* the handle upon which that call operates has expired from the metadata
* cache. We thus wrap any zoidfs routine (expr) in this macro.
*
* ROMIO stores the filename in the ADIOI_File structrue (fd), so we can always
* re-lookup in response to ESTALE */
#define NO_STALE(ret, fd, handle_p, expr) \
do { \
(ret) = (expr); \
while ((ret) == ZFSERR_STALE) { \
/* lookup again */ \
(ret) = zoidfs_lookup(NULL, NULL, (fd)->filename, \
(zoidfs_handle_t*)((fd)->fs_ptr), ZOIDFS_NO_OP_HINT); \
if ((ret) == ZFS_OK) { \
*((ADIOI_ZOIDFS_object*)handle_p) \
= *((ADIOI_ZOIDFS_object*)((fd)->fs_ptr)); \
/* re-execute the expr with new handle */ \
(ret) = (expr); \
} \
} \
} while (0)
void ADIOI_ZOIDFS_Init(int rank, int *error_code );
void ADIOI_ZOIDFS_makeattribs(zoidfs_sattr_t * attribs);
void ADIOI_ZOIDFS_End(int *error_code);
int ADIOI_ZOIDFS_End_call(MPI_Comm comm, int keyval,
void *attribute_val, void *extra_state);
int ADIOI_ZOIDFS_error_convert(int error);
#endif
|
