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| author | Quincey Koziol <koziol@hdfgroup.org> | 2000-09-26 22:50:18 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2000-09-26 22:50:18 (GMT) |
| commit | 183c8245af3a43d2f07845a0ac717f558afa3d1c (patch) | |
| tree | eaf1cdd565774fb008e9e6f836550caf7eb8d0c8 /src/H5FDdpss.c | |
| parent | 415e326afec0c6975a7b02fc77a72adcb8ba979e (diff) | |
| download | hdf5-183c8245af3a43d2f07845a0ac717f558afa3d1c.zip hdf5-183c8245af3a43d2f07845a0ac717f558afa3d1c.tar.gz hdf5-183c8245af3a43d2f07845a0ac717f558afa3d1c.tar.bz2 | |
[svn-r2600] Purpose:
Implemented new feature
Description:
Added data sieve buffering code to raw I/O data path. This is enabled for
all the VFL drivers except the mpio & core drivers. Also added two new
API functions to control the sieve buffer size: H5Pset_sieve_buf_size() and
H5Pget_sieve_buf_size().
Platforms tested:
Solaris 2.6 (i.e. baldric)
Diffstat (limited to 'src/H5FDdpss.c')
| -rw-r--r-- | src/H5FDdpss.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/src/H5FDdpss.c b/src/H5FDdpss.c index 7a03ffe..26ede02 100644 --- a/src/H5FDdpss.c +++ b/src/H5FDdpss.c @@ -114,6 +114,7 @@ typedef struct H5FD_dpss_t { static H5FD_t *H5FD_dpss_open (const char *name, unsigned flags, hid_t UNUSED fapl_id, haddr_t maxaddr); static herr_t H5FD_dpss_close (H5FD_t *_file); +static herr_t H5FD_dpss_query(const H5FD_t *_f1, unsigned long *flags); static haddr_t H5FD_dpss_get_eoa (H5FD_t *_file); static herr_t H5FD_dpss_set_eoa (H5FD_t *_file, haddr_t addr); static haddr_t H5FD_dpss_get_eof (H5FD_t *_file); @@ -139,7 +140,7 @@ static const H5FD_class_t H5FD_dpss_g = { H5FD_dpss_open, /* open */ H5FD_dpss_close, /* close */ NULL, /* cmp */ - NULL, /*query */ + H5FD_dpss_query, /*query */ NULL, /* alloc */ NULL, /* free */ H5FD_dpss_get_eoa, /* get_eoa */ @@ -394,6 +395,39 @@ H5FD_dpss_close (H5FD_t *_file) /*------------------------------------------------------------------------- + * Function: H5FD_dpss_query + * + * Purpose: Set the flags that this VFL driver is capable of supporting. + * (listed in H5FDpublic.h) + * + * Return: Success: non-negative + * + * Failure: negative + * + * Programmer: Quincey Koziol + * Tuesday, September 26, 2000 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static herr_t +H5FD_dpss_query(const UNUSED H5FD_t *_f, unsigned long *flags /* out */) +{ + herr_t ret_value=SUCCEED; + + FUNC_ENTER(H5FD_dpss_query, FAIL); + + /* Set the VFL feature flags that this driver supports */ + if(flags) { + *flags|=H5FD_FEAT_DATA_SIEVE; /* OK to perform data sieving for faster raw data reads & writes */ + } /* end if */ + + FUNC_LEAVE(ret_value); +} + + +/*------------------------------------------------------------------------- * Function: H5FD_dpss_get_eoa * * Purpose: Gets the end-of-address marker for the file. The EOA marker |