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| author | Robb Matzke <matzke@llnl.gov> | 2002-12-04 00:43:28 (GMT) |
|---|---|---|
| committer | Robb Matzke <matzke@llnl.gov> | 2002-12-04 00:43:28 (GMT) |
| commit | 72075e7f11da33016acf66b9b7206fbc168dbad8 (patch) | |
| tree | 48379c3ea0d31d026c2e69e70213f517866f19ca /src/H5Ipublic.h | |
| parent | bfe92300fb50413b363835fdc4a4e6a8bd5ff8ee (diff) | |
| download | hdf5-72075e7f11da33016acf66b9b7206fbc168dbad8.zip hdf5-72075e7f11da33016acf66b9b7206fbc168dbad8.tar.gz hdf5-72075e7f11da33016acf66b9b7206fbc168dbad8.tar.bz2 | |
[svn-r6149] ./hdf5-devel/src/H5Ipublic.h
Purpose:
Feature; Optimization
Description:
Clients pass `-1' or make their own #define for HDF5 functions
that take an optional object ID.
Blue's GPFS is slow for typical SAF restart dumps.
Solution:
Added a #define for H5I_INVALID_HID
Added GPFS-specific code to H5FDmpiposix.c that tells mmfsd to
forego byte range token prefetching. This code can be compiled
into the library by defining USE_GPFS_HINTS. The plan is to either
generalize this so it's detected during configure and turned
on/off at runtime, or to move it up into DSL/SAF with the new HDF5
functions to that return the low-level file handle.
Platforms tested:
SuSE Linux (arborea), gcc and mpich-1.2.4
SunOS (baldric), gcc
2002-09-05 12:24:28 Robb Matzke <matzke@arborea.spizella.com>
*: Added #define for H5I_INVALID_HID. An invalid object handle is
actually any integer that isn't currently in use as a
handle, and non-positive integers are never used as a
handle. The #define is -1, and is mostly so that HDF5
users can pass a symbolic name instead of a negative
number to functions that take optional object ID
arguments.
Diffstat (limited to 'src/H5Ipublic.h')
| -rw-r--r-- | src/H5Ipublic.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/H5Ipublic.h b/src/H5Ipublic.h index 07ccbaa..b03f2ce 100644 --- a/src/H5Ipublic.h +++ b/src/H5Ipublic.h @@ -47,6 +47,9 @@ typedef enum { /* Type of atoms to return to users */ typedef int hid_t; +/* An invalid object ID. This is also negative for error return. */ +#define H5I_INVALID_HID (-1) + #ifdef __cplusplus extern "C" { #endif |