b9ca2f8f6f
Bring back various minor tweaks & cleanups from the revise_chunks
branch.
Tested on:
FreeBSD/32 6.3 (duty) in debug mode
FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
w/C++ & FORTRAN, w/threadsafe, in debug mode
Linux/64-amd64 2.6 (amani) w/Intel compilers, w/default API=1.6.x,
w/C++ & FORTRAN, in production mode
Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
w/szip filter, in production mode
Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
in production mode
Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
1127 lines
36 KiB
C
1127 lines
36 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Programmer: Robb Matzke <matzke@llnl.gov>
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* Tuesday, August 10, 1999
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*
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* Purpose: A driver which stores the HDF5 data in main memory using
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* only the HDF5 public API. This driver is useful for fast
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* access to small, temporary hdf5 files.
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*/
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/* Interface initialization */
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#define H5_INTERFACE_INIT_FUNC H5FD_core_init_interface
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#include "H5private.h" /* Generic Functions */
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#include "H5Eprivate.h" /* Error handling */
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#include "H5Fprivate.h" /* File access */
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#include "H5FDprivate.h" /* File drivers */
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#include "H5FDcore.h" /* Core file driver */
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#include "H5Iprivate.h" /* IDs */
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#include "H5MMprivate.h" /* Memory management */
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#include "H5Pprivate.h" /* Property lists */
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/* The driver identification number, initialized at runtime */
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static hid_t H5FD_CORE_g = 0;
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/*
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* The description of a file belonging to this driver. The `eoa' and `eof'
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* determine the amount of hdf5 address space in use and the high-water mark
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* of the file (the current size of the underlying memory).
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*/
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typedef struct H5FD_core_t {
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H5FD_t pub; /*public stuff, must be first */
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char *name; /*for equivalence testing */
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unsigned char *mem; /*the underlying memory */
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haddr_t eoa; /*end of allocated region */
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haddr_t eof; /*current allocated size */
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size_t increment; /*multiples for mem allocation */
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hbool_t backing_store; /*write to file name on flush */
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int fd; /*backing store file descriptor */
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/* Information for determining uniqueness of a file with a backing store */
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#ifndef _WIN32
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/*
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* On most systems the combination of device and i-node number uniquely
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* identify a file.
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*/
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dev_t device; /*file device number */
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#ifdef H5_VMS
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ino_t inode[3]; /*file i-node number */
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#else
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ino_t inode; /*file i-node number */
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#endif /*H5_VMS*/
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#else
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/*
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* On _WIN32 the low-order word of a unique identifier associated with the
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* file and the volume serial number uniquely identify a file. This number
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* (which, both? -rpm) may change when the system is restarted or when the
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* file is opened. After a process opens a file, the identifier is
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* constant until the file is closed. An application can use this
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* identifier and the volume serial number to determine whether two
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* handles refer to the same file.
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*/
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DWORD fileindexlo;
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DWORD fileindexhi;
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#endif
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hbool_t dirty; /*changes not saved? */
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} H5FD_core_t;
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/* Driver-specific file access properties */
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typedef struct H5FD_core_fapl_t {
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size_t increment; /*how much to grow memory */
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hbool_t backing_store; /*write to file name on flush */
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} H5FD_core_fapl_t;
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/* Allocate memory in multiples of this size by default */
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#define H5FD_CORE_INCREMENT 8192
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/*
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* These macros check for overflow of various quantities. These macros
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* assume that file_offset_t is signed and haddr_t and size_t are unsigned.
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*
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* ADDR_OVERFLOW: Checks whether a file address of type `haddr_t'
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* is too large to be represented by the second argument
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* of the file seek function.
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*
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* SIZE_OVERFLOW: Checks whether a buffer size of type `hsize_t' is too
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* large to be represented by the `size_t' type.
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*
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* REGION_OVERFLOW: Checks whether an address and size pair describe data
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* which can be addressed entirely in memory.
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*/
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#define MAXADDR ((haddr_t)((~(size_t)0)-1))
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#define ADDR_OVERFLOW(A) (HADDR_UNDEF==(A) || (A) > (haddr_t)MAXADDR)
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#define SIZE_OVERFLOW(Z) ((Z) > (hsize_t)MAXADDR)
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#define REGION_OVERFLOW(A,Z) (ADDR_OVERFLOW(A) || SIZE_OVERFLOW(Z) || \
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HADDR_UNDEF==(A)+(Z) || \
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(size_t)((A)+(Z))<(size_t)(A))
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/* Prototypes */
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static void *H5FD_core_fapl_get(H5FD_t *_file);
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static H5FD_t *H5FD_core_open(const char *name, unsigned flags, hid_t fapl_id,
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haddr_t maxaddr);
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static herr_t H5FD_core_close(H5FD_t *_file);
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static int H5FD_core_cmp(const H5FD_t *_f1, const H5FD_t *_f2);
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static herr_t H5FD_core_query(const H5FD_t *_f1, unsigned long *flags);
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static haddr_t H5FD_core_get_eoa(const H5FD_t *_file, H5FD_mem_t type);
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static herr_t H5FD_core_set_eoa(H5FD_t *_file, H5FD_mem_t type, haddr_t addr);
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static haddr_t H5FD_core_get_eof(const H5FD_t *_file);
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static herr_t H5FD_core_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
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static herr_t H5FD_core_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
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size_t size, void *buf);
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static herr_t H5FD_core_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
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size_t size, const void *buf);
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static herr_t H5FD_core_flush(H5FD_t *_file, hid_t dxpl_id, unsigned closing);
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static herr_t H5FD_core_truncate(H5FD_t *_file, hid_t dxpl_id, hbool_t closing);
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static const H5FD_class_t H5FD_core_g = {
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"core", /*name */
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MAXADDR, /*maxaddr */
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H5F_CLOSE_WEAK, /*fc_degree */
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NULL, /*sb_size */
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NULL, /*sb_encode */
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NULL, /*sb_decode */
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sizeof(H5FD_core_fapl_t), /*fapl_size */
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H5FD_core_fapl_get, /*fapl_get */
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NULL, /*fapl_copy */
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NULL, /*fapl_free */
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0, /*dxpl_size */
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NULL, /*dxpl_copy */
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NULL, /*dxpl_free */
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H5FD_core_open, /*open */
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H5FD_core_close, /*close */
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H5FD_core_cmp, /*cmp */
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H5FD_core_query, /*query */
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NULL, /*get_type_map */
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NULL, /*alloc */
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NULL, /*free */
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H5FD_core_get_eoa, /*get_eoa */
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H5FD_core_set_eoa, /*set_eoa */
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H5FD_core_get_eof, /*get_eof */
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H5FD_core_get_handle, /*get_handle */
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H5FD_core_read, /*read */
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H5FD_core_write, /*write */
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H5FD_core_flush, /*flush */
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H5FD_core_truncate, /*truncate */
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NULL, /*lock */
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NULL, /*unlock */
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H5FD_FLMAP_SINGLE /*fl_map */
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};
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/*--------------------------------------------------------------------------
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NAME
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H5FD_core_init_interface -- Initialize interface-specific information
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USAGE
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herr_t H5FD_core_init_interface()
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RETURNS
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Non-negative on success/Negative on failure
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DESCRIPTION
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Initializes any interface-specific data or routines. (Just calls
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H5FD_core_init currently).
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--------------------------------------------------------------------------*/
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static herr_t
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H5FD_core_init_interface(void)
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{
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FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_core_init_interface)
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FUNC_LEAVE_NOAPI(H5FD_core_init())
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} /* H5FD_core_init_interface() */
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/*-------------------------------------------------------------------------
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* Function: H5FD_core_init
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*
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* Purpose: Initialize this driver by registering the driver with the
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* library.
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*
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* Return: Success: The driver ID for the core driver.
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*
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* Failure: Negative.
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*
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* Programmer: Robb Matzke
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* Thursday, July 29, 1999
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*
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* Modifications:
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*
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*-------------------------------------------------------------------------
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*/
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hid_t
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H5FD_core_init(void)
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{
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hid_t ret_value=H5FD_CORE_g; /* Return value */
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FUNC_ENTER_NOAPI(H5FD_core_init, FAIL)
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if (H5I_VFL!=H5Iget_type(H5FD_CORE_g))
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H5FD_CORE_g = H5FD_register(&H5FD_core_g,sizeof(H5FD_class_t),FALSE);
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/* Set return value */
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ret_value=H5FD_CORE_g;
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done:
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FUNC_LEAVE_NOAPI(ret_value)
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}
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/*---------------------------------------------------------------------------
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* Function: H5FD_core_term
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*
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* Purpose: Shut down the VFD
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*
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* Return: <none>
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*
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* Programmer: Quincey Koziol
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* Friday, Jan 30, 2004
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*
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* Modification:
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*
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*---------------------------------------------------------------------------
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*/
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void
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H5FD_core_term(void)
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{
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FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_core_term)
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/* Reset VFL ID */
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H5FD_CORE_g=0;
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FUNC_LEAVE_NOAPI_VOID
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} /* end H5FD_core_term() */
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/*-------------------------------------------------------------------------
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* Function: H5Pset_fapl_core
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*
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* Purpose: Modify the file access property list to use the H5FD_CORE
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* driver defined in this source file. The INCREMENT specifies
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* how much to grow the memory each time we need more.
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*
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* Return: Non-negative on success/Negative on failure
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*
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* Programmer: Robb Matzke
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* Thursday, February 19, 1998
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*
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* Modifications:
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* Robb Matzke, 1999-10-19
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* Added the BACKING_STORE argument. If set then the entire file
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* contents are flushed to a file with the same name as this
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* core file.
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*
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* Raymond Lu, 2001-10-25
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* Changed the file access list to the new generic list.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5Pset_fapl_core(hid_t fapl_id, size_t increment, hbool_t backing_store)
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{
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H5FD_core_fapl_t fa;
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H5P_genplist_t *plist; /* Property list pointer */
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herr_t ret_value;
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FUNC_ENTER_API(H5Pset_fapl_core, FAIL)
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H5TRACE3("e", "izb", fapl_id, increment, backing_store);
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/* Check argument */
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if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
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HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list")
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fa.increment = increment;
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fa.backing_store = backing_store;
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ret_value= H5P_set_driver(plist, H5FD_CORE, &fa);
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done:
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FUNC_LEAVE_API(ret_value)
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}
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/*-------------------------------------------------------------------------
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* Function: H5Pget_fapl_core
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*
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* Purpose: Queries properties set by the H5Pset_fapl_core() function.
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*
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* Return: Success: Non-negative
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*
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* Failure: Negative
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*
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* Programmer: Robb Matzke
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* Tuesday, August 10, 1999
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*
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* Modifications:
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* Robb Matzke, 1999-10-19
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* Added the BACKING_STORE argument.
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*
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* Raymond Lu
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* 2001-10-25
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* Changed file access list to the new generic property list.
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5Pget_fapl_core(hid_t fapl_id, size_t *increment/*out*/,
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hbool_t *backing_store/*out*/)
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{
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H5FD_core_fapl_t *fa;
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H5P_genplist_t *plist; /* Property list pointer */
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herr_t ret_value=SUCCEED; /* Return value */
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FUNC_ENTER_API(H5Pget_fapl_core, FAIL)
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H5TRACE3("e", "ixx", fapl_id, increment, backing_store);
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if(NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
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HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list")
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if(H5FD_CORE != H5P_get_driver(plist))
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HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "incorrect VFL driver")
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if(NULL == (fa = (H5FD_core_fapl_t *)H5P_get_driver_info(plist)))
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HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "bad VFL driver info")
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if (increment)
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*increment = fa->increment;
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if (backing_store)
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*backing_store = fa->backing_store;
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done:
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FUNC_LEAVE_API(ret_value)
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}
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/*-------------------------------------------------------------------------
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* Function: H5FD_core_fapl_get
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*
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* Purpose: Returns a copy of the file access properties.
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*
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* Return: Success: Ptr to new file access properties.
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*
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* Failure: NULL
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*
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* Programmer: Robb Matzke
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* Friday, August 13, 1999
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*
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* Modifications:
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*
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*-------------------------------------------------------------------------
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*/
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static void *
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H5FD_core_fapl_get(H5FD_t *_file)
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{
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H5FD_core_t *file = (H5FD_core_t*)_file;
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H5FD_core_fapl_t *fa;
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void *ret_value; /* Return value */
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FUNC_ENTER_NOAPI(H5FD_core_fapl_get, NULL)
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if(NULL == (fa = (H5FD_core_fapl_t *)H5MM_calloc(sizeof(H5FD_core_fapl_t))))
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HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
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fa->increment = file->increment;
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fa->backing_store = (hbool_t)(file->fd >= 0);
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/* Set return value */
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ret_value=fa;
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done:
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FUNC_LEAVE_NOAPI(ret_value)
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}
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_open
|
||
*
|
||
* Purpose: Create memory as an HDF5 file.
|
||
*
|
||
* Return: Success: A pointer to a new file data structure. The
|
||
* public fields will be initialized by the
|
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* caller, which is always H5FD_open().
|
||
*
|
||
* Failure: NULL
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
* Modifications:
|
||
* Robb Matzke, 1999-10-19
|
||
* The backing store file is created and opened if specified.
|
||
*
|
||
* Raymond Lu, 2006-11-30
|
||
* Enabled the driver to read an existing file depending on
|
||
* the setting of the backing_store and file open flags.
|
||
*
|
||
* Allen Byrne, 2008-1-23
|
||
* changed if of fapl_id to assert
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static H5FD_t *
|
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H5FD_core_open(const char *name, unsigned flags, hid_t fapl_id,
|
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haddr_t maxaddr)
|
||
{
|
||
int o_flags;
|
||
H5FD_core_t *file=NULL;
|
||
H5FD_core_fapl_t *fa=NULL;
|
||
H5P_genplist_t *plist; /* Property list pointer */
|
||
#ifdef _WIN32
|
||
HFILE filehandle;
|
||
struct _BY_HANDLE_FILE_INFORMATION fileinfo;
|
||
#endif
|
||
h5_stat_t sb;
|
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int fd=-1;
|
||
H5FD_t *ret_value;
|
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|
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FUNC_ENTER_NOAPI(H5FD_core_open, NULL)
|
||
|
||
/* Check arguments */
|
||
if(!name || !*name)
|
||
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "invalid file name")
|
||
if(0 == maxaddr || HADDR_UNDEF == maxaddr)
|
||
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, NULL, "bogus maxaddr")
|
||
if(ADDR_OVERFLOW(maxaddr))
|
||
HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, NULL, "maxaddr overflow")
|
||
HDassert(H5P_DEFAULT != fapl_id);
|
||
if(NULL == (plist = (H5P_genplist_t *)H5I_object(fapl_id)))
|
||
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a file access property list")
|
||
fa = (H5FD_core_fapl_t *)H5P_get_driver_info(plist);
|
||
|
||
/* Build the open flags */
|
||
o_flags = (H5F_ACC_RDWR & flags) ? O_RDWR : O_RDONLY;
|
||
if(H5F_ACC_TRUNC & flags) o_flags |= O_TRUNC;
|
||
if(H5F_ACC_CREAT & flags) o_flags |= O_CREAT;
|
||
if(H5F_ACC_EXCL & flags) o_flags |= O_EXCL;
|
||
|
||
/* Open backing store, and get stat() from file. The only case that backing
|
||
* store is off is when the backing_store flag is off and H5F_ACC_CREAT is
|
||
* on. */
|
||
if(fa->backing_store || !(H5F_ACC_CREAT & flags)) {
|
||
if(fa && (fd = HDopen(name, o_flags, 0666)) < 0)
|
||
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file")
|
||
if(HDfstat(fd, &sb) < 0)
|
||
HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, NULL, "unable to fstat file")
|
||
} /* end if */
|
||
|
||
/* Create the new file struct */
|
||
if(NULL == (file = (H5FD_core_t *)H5MM_calloc(sizeof(H5FD_core_t))))
|
||
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "unable to allocate file struct")
|
||
file->fd = fd;
|
||
if(name && *name)
|
||
file->name = H5MM_xstrdup(name);
|
||
|
||
/*
|
||
* The increment comes from either the file access property list or the
|
||
* default value. But if the file access property list was zero then use
|
||
* the default value instead.
|
||
*/
|
||
file->increment = (fa && fa->increment>0) ? fa->increment : H5FD_CORE_INCREMENT;
|
||
|
||
/* If save data in backing store. */
|
||
file->backing_store = fa->backing_store;
|
||
|
||
if(fd >= 0) {
|
||
/* Retrieve information for determining uniqueness of file */
|
||
#ifdef _WIN32
|
||
filehandle = _get_osfhandle(fd);
|
||
(void)GetFileInformationByHandle((HANDLE)filehandle, &fileinfo);
|
||
file->fileindexhi = fileinfo.nFileIndexHigh;
|
||
file->fileindexlo = fileinfo.nFileIndexLow;
|
||
#else /* _WIN32 */
|
||
file->device = sb.st_dev;
|
||
#ifdef H5_VMS
|
||
file->inode[0] = sb.st_ino[0];
|
||
file->inode[1] = sb.st_ino[1];
|
||
file->inode[2] = sb.st_ino[2];
|
||
#else
|
||
file->inode = sb.st_ino;
|
||
#endif /* H5_VMS */
|
||
|
||
#endif /* _WIN32 */
|
||
} /* end if */
|
||
|
||
/* If an existing file is opened, load the whole file into memory. */
|
||
if(!(H5F_ACC_CREAT & flags)) {
|
||
size_t size;
|
||
|
||
/* Retrieve file size */
|
||
size = (size_t)sb.st_size;
|
||
|
||
/* Check if we should allocate the memory buffer and read in existing data */
|
||
if(size) {
|
||
/* Allocate memory for the file's data */
|
||
if(NULL == (file->mem = (unsigned char*)H5MM_malloc(size)))
|
||
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "unable to allocate memory block")
|
||
|
||
/* Set up data structures */
|
||
file->eof = size;
|
||
|
||
/* Read in existing data */
|
||
if(HDread(file->fd, file->mem, size) < 0)
|
||
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to read file")
|
||
} /* end if */
|
||
} /* end if */
|
||
|
||
/* Set return value */
|
||
ret_value = (H5FD_t *)file;
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_open() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_close
|
||
*
|
||
* Purpose: Closes the file.
|
||
*
|
||
* Return: Success: 0
|
||
*
|
||
* Failure: -1
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static herr_t
|
||
H5FD_core_close(H5FD_t *_file)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t*)_file;
|
||
herr_t ret_value = SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_close, FAIL)
|
||
|
||
/* Flush any changed buffers */
|
||
if(H5FD_core_flush(_file, (hid_t)-1, TRUE) < 0)
|
||
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush file")
|
||
|
||
/* Release resources */
|
||
if(file->fd >= 0)
|
||
HDclose(file->fd);
|
||
if(file->name)
|
||
H5MM_xfree(file->name);
|
||
if(file->mem)
|
||
H5MM_xfree(file->mem);
|
||
HDmemset(file, 0, sizeof(H5FD_core_t));
|
||
H5MM_xfree(file);
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_close() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_cmp
|
||
*
|
||
* Purpose: Compares two files belonging to this driver by name. If one
|
||
* file doesn't have a name then it is less than the other file.
|
||
* If neither file has a name then the comparison is by file
|
||
* address.
|
||
*
|
||
* Return: Success: A value like strcmp()
|
||
*
|
||
* Failure: never fails (arguments were checked by the
|
||
* caller).
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
* Modifications:
|
||
* Neil Fortner
|
||
* Tuesday, March 9, 2010
|
||
* Modified function to compare low level file information if
|
||
* a backing store is opened for both files, similar to the
|
||
* sec2 file driver.
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
H5FD_core_cmp(const H5FD_t *_f1, const H5FD_t *_f2)
|
||
{
|
||
const H5FD_core_t *f1 = (const H5FD_core_t*)_f1;
|
||
const H5FD_core_t *f2 = (const H5FD_core_t*)_f2;
|
||
int ret_value = 0;
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_cmp, FAIL)
|
||
|
||
if(f1->fd >= 0 && f2->fd >= 0) {
|
||
/* Compare low level file information for backing store */
|
||
#ifdef _WIN32
|
||
if (f1->fileindexhi < f2->fileindexhi) HGOTO_DONE(-1)
|
||
if (f1->fileindexhi > f2->fileindexhi) HGOTO_DONE(1)
|
||
|
||
if (f1->fileindexlo < f2->fileindexlo) HGOTO_DONE(-1)
|
||
if (f1->fileindexlo > f2->fileindexlo) HGOTO_DONE(1)
|
||
|
||
#else
|
||
#ifdef H5_DEV_T_IS_SCALAR
|
||
if (f1->device < f2->device) HGOTO_DONE(-1)
|
||
if (f1->device > f2->device) HGOTO_DONE(1)
|
||
#else /* H5_DEV_T_IS_SCALAR */
|
||
/* If dev_t isn't a scalar value on this system, just use memcmp to
|
||
* determine if the values are the same or not. The actual return value
|
||
* shouldn't really matter...
|
||
*/
|
||
if(HDmemcmp(&(f1->device),&(f2->device),sizeof(dev_t))<0) HGOTO_DONE(-1)
|
||
if(HDmemcmp(&(f1->device),&(f2->device),sizeof(dev_t))>0) HGOTO_DONE(1)
|
||
#endif /* H5_DEV_T_IS_SCALAR */
|
||
|
||
#ifndef H5_VMS
|
||
if (f1->inode < f2->inode) HGOTO_DONE(-1)
|
||
if (f1->inode > f2->inode) HGOTO_DONE(1)
|
||
#else
|
||
if(HDmemcmp(&(f1->inode),&(f2->inode),3*sizeof(ino_t))<0) HGOTO_DONE(-1)
|
||
if(HDmemcmp(&(f1->inode),&(f2->inode),3*sizeof(ino_t))>0) HGOTO_DONE(1)
|
||
#endif /* H5_VMS */
|
||
|
||
#endif /*_WIN32*/
|
||
} /* end if */
|
||
else {
|
||
if (NULL==f1->name && NULL==f2->name) {
|
||
if (f1<f2)
|
||
HGOTO_DONE(-1)
|
||
if (f1>f2)
|
||
HGOTO_DONE(1)
|
||
HGOTO_DONE(0)
|
||
} /* end if */
|
||
|
||
if (NULL==f1->name)
|
||
HGOTO_DONE(-1)
|
||
if (NULL==f2->name)
|
||
HGOTO_DONE(1)
|
||
|
||
ret_value = HDstrcmp(f1->name, f2->name);
|
||
} /* end else */
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_cmp() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_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, October 7, 2008
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static herr_t
|
||
H5FD_core_query(const H5FD_t * _file, unsigned long *flags /* out */)
|
||
{
|
||
const H5FD_core_t *file = (const H5FD_core_t*)_file;
|
||
|
||
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_core_query)
|
||
|
||
/* Set the VFL feature flags that this driver supports */
|
||
if(flags) {
|
||
*flags = 0;
|
||
*flags |= H5FD_FEAT_AGGREGATE_METADATA; /* OK to aggregate metadata allocations */
|
||
*flags |= H5FD_FEAT_ACCUMULATE_METADATA; /* OK to accumulate metadata for faster writes */
|
||
*flags |= H5FD_FEAT_DATA_SIEVE; /* OK to perform data sieving for faster raw data reads & writes */
|
||
*flags |= H5FD_FEAT_AGGREGATE_SMALLDATA; /* OK to aggregate "small" raw data allocations */
|
||
|
||
/* If the backing store is open, a POSIX file handle is available */
|
||
if(file->fd >= 0 && file->backing_store)
|
||
*flags |= H5FD_FEAT_POSIX_COMPAT_HANDLE; /* VFD handle is POSIX I/O call compatible */
|
||
} /* end if */
|
||
|
||
FUNC_LEAVE_NOAPI(SUCCEED)
|
||
} /* end H5FD_core_query() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_get_eoa
|
||
*
|
||
* Purpose: Gets the end-of-address marker for the file. The EOA marker
|
||
* is the first address past the last byte allocated in the
|
||
* format address space.
|
||
*
|
||
* Return: Success: The end-of-address marker.
|
||
*
|
||
* Failure: HADDR_UNDEF
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Monday, August 2, 1999
|
||
*
|
||
* Modifications:
|
||
* Raymond Lu
|
||
* 21 Dec. 2006
|
||
* Added the parameter TYPE. It's only used for MULTI driver.
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static haddr_t
|
||
H5FD_core_get_eoa(const H5FD_t *_file, H5FD_mem_t UNUSED type)
|
||
{
|
||
const H5FD_core_t *file = (const H5FD_core_t*)_file;
|
||
haddr_t ret_value; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_get_eoa, HADDR_UNDEF)
|
||
|
||
/* Set return value */
|
||
ret_value=file->eoa;
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_set_eoa
|
||
*
|
||
* Purpose: Set the end-of-address marker for the file. This function is
|
||
* called shortly after an existing HDF5 file is opened in order
|
||
* to tell the driver where the end of the HDF5 data is located.
|
||
*
|
||
* Return: Success: 0
|
||
*
|
||
* Failure: -1
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
* Modifications:
|
||
* Raymond Lu
|
||
* 21 Dec. 2006
|
||
* Added the parameter TYPE. It's only used for MULTI driver.
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static herr_t
|
||
H5FD_core_set_eoa(H5FD_t *_file, H5FD_mem_t UNUSED type, haddr_t addr)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t*)_file;
|
||
herr_t ret_value = SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_set_eoa, FAIL)
|
||
|
||
if(ADDR_OVERFLOW(addr))
|
||
HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "address overflow")
|
||
|
||
file->eoa = addr;
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_set_eoa() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_get_eof
|
||
*
|
||
* Purpose: Returns the end-of-file marker, which is the greater of
|
||
* either the size of the underlying memory or the HDF5
|
||
* end-of-address markers.
|
||
*
|
||
* Return: Success: End of file address, the first address past
|
||
* the end of the "file", either the memory
|
||
* or the HDF5 file.
|
||
*
|
||
* Failure: HADDR_UNDEF
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
* Modifications:
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static haddr_t
|
||
H5FD_core_get_eof(const H5FD_t *_file)
|
||
{
|
||
haddr_t ret_value; /* Return value */
|
||
|
||
const H5FD_core_t *file = (const H5FD_core_t*)_file;
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_get_eof, HADDR_UNDEF)
|
||
|
||
/* Set return value */
|
||
ret_value=MAX(file->eof, file->eoa);
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_get_handle
|
||
*
|
||
* Purpose: Returns the file handle of CORE file driver.
|
||
*
|
||
* Returns: Non-negative if succeed or negative if fails.
|
||
*
|
||
* Programmer: Raymond Lu
|
||
* Sept. 16, 2002
|
||
*
|
||
* Modifications:
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
static herr_t
|
||
H5FD_core_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t *)_file; /* core VFD info */
|
||
herr_t ret_value = SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_get_handle, FAIL)
|
||
|
||
/* Check args */
|
||
if(!file_handle)
|
||
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid")
|
||
|
||
/* Check for non-default FAPL */
|
||
if(H5P_FILE_ACCESS_DEFAULT != fapl && H5P_DEFAULT != fapl) {
|
||
H5P_genplist_t *plist; /* Property list pointer */
|
||
|
||
/* Get the FAPL */
|
||
if(NULL == (plist = (H5P_genplist_t *)H5I_object(fapl)))
|
||
HGOTO_ERROR(H5E_VFL, H5E_BADTYPE, FAIL, "not a file access property list")
|
||
|
||
/* Check if private property for retrieving the backing store POSIX
|
||
* file descriptor is set. (This should not be set except within the
|
||
* library) QAK - 2009/12/04
|
||
*/
|
||
if(H5P_exist_plist(plist, H5F_ACS_WANT_POSIX_FD_NAME) > 0) {
|
||
hbool_t want_posix_fd; /* Setting for retrieving file descriptor from core VFD */
|
||
|
||
/* Get property */
|
||
if(H5P_get(plist, H5F_ACS_WANT_POSIX_FD_NAME, &want_posix_fd) < 0)
|
||
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "can't get property of retrieving file descriptor")
|
||
|
||
/* If property is set, pass back the file descriptor instead of the memory address */
|
||
if(want_posix_fd)
|
||
*file_handle = &(file->fd);
|
||
else
|
||
*file_handle = &(file->mem);
|
||
} /* end if */
|
||
else
|
||
*file_handle = &(file->mem);
|
||
} /* end if */
|
||
else
|
||
*file_handle = &(file->mem);
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_get_handle() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_read
|
||
*
|
||
* Purpose: Reads SIZE bytes of data from FILE beginning at address ADDR
|
||
* into buffer BUF according to data transfer properties in
|
||
* DXPL_ID.
|
||
*
|
||
* Return: Success: Zero. Result is stored in caller-supplied
|
||
* buffer BUF.
|
||
*
|
||
* Failure: -1, Contents of buffer BUF are undefined.
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
* Modifications:
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
/* ARGSUSED */
|
||
static herr_t
|
||
H5FD_core_read(H5FD_t *_file, H5FD_mem_t UNUSED type, hid_t UNUSED dxpl_id, haddr_t addr,
|
||
size_t size, void *buf/*out*/)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t*)_file;
|
||
herr_t ret_value=SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_read, FAIL)
|
||
|
||
assert(file && file->pub.cls);
|
||
assert(buf);
|
||
|
||
/* Check for overflow conditions */
|
||
if (HADDR_UNDEF == addr)
|
||
HGOTO_ERROR(H5E_IO, H5E_OVERFLOW, FAIL, "file address overflowed")
|
||
if (REGION_OVERFLOW(addr, size))
|
||
HGOTO_ERROR(H5E_IO, H5E_OVERFLOW, FAIL, "file address overflowed")
|
||
if((addr + size) > file->eoa)
|
||
HGOTO_ERROR(H5E_IO, H5E_OVERFLOW, FAIL, "file address overflowed")
|
||
|
||
/* Read the part which is before the EOF marker */
|
||
if (addr < file->eof) {
|
||
size_t nbytes;
|
||
#ifndef NDEBUG
|
||
hsize_t temp_nbytes;
|
||
|
||
temp_nbytes = file->eof-addr;
|
||
H5_CHECK_OVERFLOW(temp_nbytes,hsize_t,size_t);
|
||
nbytes = MIN(size,(size_t)temp_nbytes);
|
||
#else /* NDEBUG */
|
||
nbytes = MIN(size,(size_t)(file->eof-addr));
|
||
#endif /* NDEBUG */
|
||
|
||
HDmemcpy(buf, file->mem + addr, nbytes);
|
||
size -= nbytes;
|
||
addr += nbytes;
|
||
buf = (char *)buf + nbytes;
|
||
}
|
||
|
||
/* Read zeros for the part which is after the EOF markers */
|
||
if (size > 0)
|
||
HDmemset(buf, 0, size);
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_write
|
||
*
|
||
* Purpose: Writes SIZE bytes of data to FILE beginning at address ADDR
|
||
* from buffer BUF according to data transfer properties in
|
||
* DXPL_ID.
|
||
*
|
||
* Return: Success: Zero
|
||
*
|
||
* Failure: -1
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Thursday, July 29, 1999
|
||
*
|
||
* Modifications:
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
/* ARGSUSED */
|
||
static herr_t
|
||
H5FD_core_write(H5FD_t *_file, H5FD_mem_t UNUSED type, hid_t UNUSED dxpl_id, haddr_t addr,
|
||
size_t size, const void *buf)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t*)_file;
|
||
herr_t ret_value = SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_write, FAIL)
|
||
|
||
HDassert(file && file->pub.cls);
|
||
HDassert(buf);
|
||
|
||
/* Check for overflow conditions */
|
||
if(REGION_OVERFLOW(addr, size))
|
||
HGOTO_ERROR(H5E_IO, H5E_OVERFLOW, FAIL, "file address overflowed")
|
||
if(addr + size > file->eoa)
|
||
HGOTO_ERROR(H5E_IO, H5E_OVERFLOW, FAIL, "file address overflowed")
|
||
|
||
/*
|
||
* Allocate more memory if necessary, careful of overflow. Also, if the
|
||
* allocation fails then the file should remain in a usable state. Be
|
||
* careful of non-Posix realloc() that doesn't understand what to do when
|
||
* the first argument is null.
|
||
*/
|
||
if(addr + size > file->eof) {
|
||
unsigned char *x;
|
||
size_t new_eof;
|
||
|
||
/* Determine new size of memory buffer */
|
||
H5_ASSIGN_OVERFLOW(new_eof, file->increment * ((addr + size) / file->increment), hsize_t, size_t);
|
||
if((addr + size) % file->increment)
|
||
new_eof += file->increment;
|
||
|
||
/* (Re)allocate memory for the file buffer */
|
||
if(NULL == (x = (unsigned char *)H5MM_realloc(file->mem, new_eof)))
|
||
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate memory block")
|
||
#ifdef H5_CLEAR_MEMORY
|
||
HDmemset(x + file->eof, 0, (size_t)(new_eof - file->eof));
|
||
#endif /* H5_CLEAR_MEMORY */
|
||
file->mem = x;
|
||
|
||
file->eof = new_eof;
|
||
} /* end if */
|
||
|
||
/* Write from BUF to memory */
|
||
HDmemcpy(file->mem + addr, buf, size);
|
||
file->dirty = TRUE;
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_write() */
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_flush
|
||
*
|
||
* Purpose: Flushes the file to backing store if there is any and if the
|
||
* dirty flag is set.
|
||
*
|
||
* Return: Success: 0
|
||
*
|
||
* Failure: -1
|
||
*
|
||
* Programmer: Robb Matzke
|
||
* Friday, October 15, 1999
|
||
*
|
||
* Modifications:
|
||
* Raymond Lu, 2006-11-30
|
||
* Added a condition check for backing store flag, for an
|
||
* existing file can be opened for read and write now.
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
/* ARGSUSED */
|
||
static herr_t
|
||
H5FD_core_flush(H5FD_t *_file, hid_t UNUSED dxpl_id, unsigned UNUSED closing)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t*)_file;
|
||
herr_t ret_value=SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_flush, FAIL)
|
||
|
||
/* Write to backing store */
|
||
if (file->dirty && file->fd>=0 && file->backing_store) {
|
||
haddr_t size = file->eof;
|
||
unsigned char *ptr = file->mem;
|
||
|
||
if (0!=HDlseek(file->fd, (off_t)0, SEEK_SET))
|
||
HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "error seeking in backing store")
|
||
|
||
while (size) {
|
||
ssize_t n;
|
||
|
||
H5_CHECK_OVERFLOW(size,hsize_t,size_t);
|
||
n = HDwrite(file->fd, ptr, (size_t)size);
|
||
if (n<0 && EINTR==errno)
|
||
continue;
|
||
if (n<0)
|
||
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "error writing backing store")
|
||
ptr += (size_t)n;
|
||
size -= (size_t)n;
|
||
}
|
||
file->dirty = FALSE;
|
||
}
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
* Function: H5FD_core_truncate
|
||
*
|
||
* Purpose: Makes sure that the true file size is the same (or larger)
|
||
* than the end-of-address.
|
||
*
|
||
* Return: Success: Non-negative
|
||
* Failure: Negative
|
||
*
|
||
* Programmer: Quincey Koziol
|
||
* Tuesday, October 7, 2008
|
||
*
|
||
*-------------------------------------------------------------------------
|
||
*/
|
||
/* ARGSUSED */
|
||
static herr_t
|
||
H5FD_core_truncate(H5FD_t *_file, hid_t UNUSED dxpl_id, hbool_t UNUSED closing)
|
||
{
|
||
H5FD_core_t *file = (H5FD_core_t*)_file;
|
||
size_t new_eof; /* New size of memory buffer */
|
||
herr_t ret_value = SUCCEED; /* Return value */
|
||
|
||
FUNC_ENTER_NOAPI(H5FD_core_truncate, FAIL)
|
||
|
||
HDassert(file);
|
||
|
||
/* Determine new size of memory buffer */
|
||
H5_ASSIGN_OVERFLOW(new_eof, file->increment * (file->eoa / file->increment), hsize_t, size_t);
|
||
if(file->eoa % file->increment)
|
||
new_eof += file->increment;
|
||
|
||
/* Extend the file to make sure it's large enough */
|
||
if(!H5F_addr_eq(file->eof, (haddr_t)new_eof)) {
|
||
unsigned char *x; /* Pointer to new buffer for file data */
|
||
|
||
/* (Re)allocate memory for the file buffer */
|
||
if(NULL == (x = (unsigned char *)H5MM_realloc(file->mem, new_eof)))
|
||
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate memory block")
|
||
#ifdef H5_CLEAR_MEMORY
|
||
if(file->eof < new_eof)
|
||
HDmemset(x + file->eof, 0, (size_t)(new_eof - file->eof));
|
||
#endif /* H5_CLEAR_MEMORY */
|
||
file->mem = x;
|
||
|
||
/* Update backing store, if using it */
|
||
if(file->fd >= 0 && file->backing_store) {
|
||
#ifdef H5_VMS
|
||
/* Reset seek offset to the beginning of the file, so that the file isn't
|
||
* re-extended later. This may happen on Open VMS. */
|
||
if(-1 == HDlseek(file->fd, 0, SEEK_SET))
|
||
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position")
|
||
#endif
|
||
|
||
if(-1 == HDftruncate(file->fd, (off_t)new_eof))
|
||
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to extend file properly")
|
||
} /* end if */
|
||
|
||
/* Update the eof value */
|
||
file->eof = new_eof;
|
||
} /* end if */
|
||
|
||
done:
|
||
FUNC_LEAVE_NOAPI(ret_value)
|
||
} /* end H5FD_core_truncate() */
|
||
|