diff options
Diffstat (limited to 'src/H5FDwindows.c')
| -rw-r--r-- | src/H5FDwindows.c | 1037 |
1 files changed, 20 insertions, 1017 deletions
diff --git a/src/H5FDwindows.c b/src/H5FDwindows.c index fbd13ea..a0d82b0 100644 --- a/src/H5FDwindows.c +++ b/src/H5FDwindows.c @@ -28,238 +28,20 @@ * our stdio driver. */ -/* Interface initialization */ -#define H5_INTERFACE_INIT_FUNC H5FD_windows_init_interface - - -#include "H5private.h" /* Generic Functions */ -#include "H5Eprivate.h" /* Error handling */ -#include "H5Fprivate.h" /* File access */ -#include "H5FDprivate.h" /* File drivers */ -#include "H5FDwindows.h" /* Windows file driver */ -#include "H5FLprivate.h" /* Free Lists */ -#include "H5Iprivate.h" /* IDs */ -#include "H5MMprivate.h" /* Memory management */ -#include "H5Pprivate.h" /* Property lists */ +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Fprivate.h" /* File access */ +#include "H5FDprivate.h" /* File drivers */ +#include "H5FDwindows.h" /* Windows file driver */ +#include "H5FDsec2.h" /* Windows file driver */ +#include "H5FLprivate.h" /* Free Lists */ +#include "H5Iprivate.h" /* IDs */ +#include "H5MMprivate.h" /* Memory management */ +#include "H5Pprivate.h" /* Property lists */ #ifdef H5_HAVE_WINDOWS -/* The driver identification number, initialized at runtime */ -static hid_t H5FD_WINDOWS_g = 0; - -/* File operations */ -#define OP_UNKNOWN 0 -#define OP_READ 1 -#define OP_WRITE 2 - -/* - * The description of a file belonging to this driver. The `eoa' and `eof' - * determine the amount of hdf5 address space in use and the high-water mark - * of the file (the current size of the underlying file). The `pos' - * value is used to eliminate file position updates when they would be a - * no-op. Unfortunately we've found systems that use separate file position - * indicators for reading and writing so the lseek can only be eliminated if - * the current operation is the same as the previous operation. When opening - * a file the `eof' will be set to the current file size, `eoa' will be set - * to zero, `pos' will be set to H5F_ADDR_UNDEF (as it is when an error - * occurs), and `op' will be set to H5F_OP_UNKNOWN. - */ -typedef struct H5FD_windows_t { - H5FD_t pub; /*public stuff, must be first */ - /* - * .NET doesn't support our 64-bit safe stdio functions, - * so we will use io.h functions instead. - */ -#ifndef WINDOWS_USE_STDIO - int fd; /*the file descriptor */ -#else - FILE *fp; /*the file handle */ -#endif /*MSC_VER */ - haddr_t eoa; /*end of allocated region */ - haddr_t eof; /*end of file; current file size*/ - haddr_t pos; /*current file I/O position */ - int op; /*last operation */ - unsigned write_access; /*flag to indicate the file was opened with write access */ - /* - * On H5_HAVE_WIN32_API the low-order word of a unique identifier associated with the - * file and the volume serial number uniquely identify a file. This number - * may change when the system is restarted or when the - * file is opened. After a process opens a file, the identifier is - * constant until the file is closed. An application can use this - * identifier and the volume serial number to determine whether two - * handles refer to the same file. - */ - DWORD fileindexlo; - DWORD fileindexhi; - DWORD volumeserialnumber; - - /* Information from properties set by 'h5repart' tool */ - hbool_t fam_to_sec2; /* Whether to eliminate the family driver info - * and convert this file to a single file */ -} H5FD_windows_t; - - -/* These are used by the macros below */ -#define file_offset_t __int64 -#define fseek_offset_t __int64 - -/* - * These macros check for overflow of various quantities. These macros - * assume that fseek_offset_t is signed and haddr_t and size_t are unsigned. - * - * ADDR_OVERFLOW: Checks whether a file address of type `haddr_t' - * is too large to be represented by the second argument - * of the file seek function. - * - * SIZE_OVERFLOW: Checks whether a buffer size of type `hsize_t' is too - * large to be represented by the `size_t' type. - * - * REGION_OVERFLOW: Checks whether an address and size pair describe data - * which can be addressed entirely by the second - * argument of the file seek function. - */ -#define MAXADDR (((haddr_t)1<<(8*sizeof(file_offset_t)-1))-1) -#define ADDR_OVERFLOW(A) (HADDR_UNDEF==(A) || \ - ((A) & ~(haddr_t)MAXADDR)) -#define SIZE_OVERFLOW(Z) ((Z) & ~(hsize_t)MAXADDR) -#define REGION_OVERFLOW(A,Z) (ADDR_OVERFLOW(A) || SIZE_OVERFLOW(Z) || \ - HADDR_UNDEF==(A)+(Z) || \ - (fseek_offset_t)((A)+(Z))<(fseek_offset_t)(A)) - -/* Prototypes */ -static herr_t H5FD_windows_term(void); -static H5FD_t *H5FD_windows_open(const char *name, unsigned flags, hid_t fapl_id, - haddr_t maxaddr); -static herr_t H5FD_windows_close(H5FD_t *_file); -static int H5FD_windows_cmp(const H5FD_t *_f1, const H5FD_t *_f2); -static herr_t H5FD_windows_query(const H5FD_t *_f1, unsigned long *flags); -static haddr_t H5FD_windows_alloc(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, - hsize_t size); -static haddr_t H5FD_windows_get_eoa(const H5FD_t *_file, H5FD_mem_t type); -static herr_t H5FD_windows_set_eoa(H5FD_t *_file, H5FD_mem_t type, haddr_t addr); -static haddr_t H5FD_windows_get_eof(const H5FD_t *_file); -static herr_t H5FD_windows_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle); -static herr_t H5FD_windows_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr, - size_t size, void *buf); -static herr_t H5FD_windows_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr, - size_t size, const void *buf); -static herr_t H5FD_windows_flush(H5FD_t *_file, hid_t dxpl_id, unsigned closing); -static herr_t H5FD_windows_truncate(H5FD_t *_file, hid_t dxpl_id, hbool_t closing); - -static const H5FD_class_t H5FD_windows_g = { - "windows", /*name */ - MAXADDR, /*maxaddr */ - H5F_CLOSE_WEAK, /* fc_degree */ - H5FD_windows_term, /*terminate */ - NULL, /*sb_size */ - NULL, /*sb_encode */ - NULL, /*sb_decode */ - 0, /*fapl_size */ - NULL, /*fapl_get */ - NULL, /*fapl_copy */ - NULL, /*fapl_free */ - 0, /*dxpl_size */ - NULL, /*dxpl_copy */ - NULL, /*dxpl_free */ - H5FD_windows_open, /*open */ - H5FD_windows_close, /*close */ - H5FD_windows_cmp, /*cmp */ - H5FD_windows_query, /*query */ - NULL, /*get_type_map */ - NULL, /*alloc */ - NULL, /*free */ - H5FD_windows_get_eoa, /*get_eoa */ - H5FD_windows_set_eoa, /*set_eoa */ - H5FD_windows_get_eof, /*get_eof */ - H5FD_windows_get_handle, /*get_handle */ - H5FD_windows_read, /*read */ - H5FD_windows_write, /*write */ - H5FD_windows_flush, /*flush */ - H5FD_windows_truncate, /*truncate */ - NULL, /*lock */ - NULL, /*unlock */ - H5FD_FLMAP_SINGLE /*fl_map */ -}; - -/* Declare a free list to manage the H5FD_windows_t struct */ -H5FL_DEFINE_STATIC(H5FD_windows_t); - -/*-------------------------------------------------------------------------- -NAME - H5FD_windows_init_interface -- Initialize interface-specific information -USAGE - herr_t H5FD_windows_init_interface() - -RETURNS - Non-negative on success/Negative on failure -DESCRIPTION - Initializes any interface-specific data or routines. (Just calls - H5FD_windows_init currently). - ---------------------------------------------------------------------------*/ -static herr_t -H5FD_windows_init_interface(void) -{ - FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_windows_init_interface) - - FUNC_LEAVE_NOAPI(H5FD_windows_init()) -} /* H5FD_windows_init_interface() */ - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_init - * - * Purpose: Initialize this driver by registering the driver with the - * library. - * - * Return: Success: The driver ID for the windows driver. - * Failure: Negative. - * - * Programmer: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24, 2007 - * - *------------------------------------------------------------------------- - */ -hid_t -H5FD_windows_init(void) -{ - hid_t ret_value; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_init, FAIL) - - if(H5I_VFL != H5I_get_type(H5FD_WINDOWS_g)) - H5FD_WINDOWS_g = H5FD_register(&H5FD_windows_g, sizeof(H5FD_class_t), FALSE); - - /* Set return value */ - ret_value = H5FD_WINDOWS_g; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5FD_windows_init() */ - -/*--------------------------------------------------------------------------- - * Function: H5FD_windows_term - * - * Purpose: Shut down the VFD - * - * Returns: Non-negative on success or negative on failure - * - * Programmer: Scott Wegner - * Thursday, May 24 2007 - * - *--------------------------------------------------------------------------- - */ -static herr_t -H5FD_windows_term(void) -{ - FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_windows_term) - - /* Reset VFL ID */ - H5FD_WINDOWS_g=0; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5FD_windows_term() */ - + /*------------------------------------------------------------------------- * Function: H5Pset_fapl_windows * @@ -267,14 +49,18 @@ H5FD_windows_term(void) * driver defined in this source file. There are no driver * specific properties. * + * NOTE: The Windows VFD was merely a merge of the SEC2 and STDIO drivers + * so it has been retired. Selecting the Windows VFD will actually + * set the SEC2 VFD (though for backwards compatibility, we'll keep + * the H5FD_WINDOWS symbol). + * + * * Return: Non-negative on success/Negative on failure * * Programmer: Scott Wegner * Based on code by Robb Matzke * Thursday, May 24 2007 * - * Modifications: - * *------------------------------------------------------------------------- */ herr_t @@ -286,797 +72,14 @@ H5Pset_fapl_windows(hid_t fapl_id) FUNC_ENTER_API(H5Pset_fapl_windows, FAIL) H5TRACE1("e", "i", fapl_id); - if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS))) + if(NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list") - ret_value= H5P_set_driver(plist, H5FD_WINDOWS, NULL); + ret_value = H5P_set_driver(plist, H5FD_WINDOWS, NULL); done: FUNC_LEAVE_API(ret_value) -} - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_open - * - * Purpose: Create and/or opens a Windows file as an HDF5 file. - * - * Return: Success: A pointer to a new file data structure. The - * public fields will be initialized by the - * caller, which is always H5FD_open(). - * - * Failure: NULL - * - * Programmer: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -/* ARGSUSED */ -static H5FD_t * -H5FD_windows_open(const char *name, unsigned flags, hid_t UNUSED fapl_id, - haddr_t maxaddr) -{ - int fd = -1; - FILE *f = NULL; - H5FD_windows_t *file = NULL; - HANDLE filehandle; - struct _BY_HANDLE_FILE_INFORMATION fileinfo; - H5FD_t *ret_value; - struct _stati64 sb; -#ifndef WINDOWS_USE_STDIO - int o_flags; -#else - unsigned write_access = 0; -#endif /* WINDOWS_USE_STDIO */ - - FUNC_ENTER_NOAPI(H5FD_windows_open, NULL) - - /* Sanity check on file offsets */ - assert(sizeof(file_offset_t)>=sizeof(size_t)); - - /* 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, "bogus maxaddr") - -#ifndef WINDOWS_USE_STDIO - /* 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; - /* Windows needs O_BINARY to correctly handle eol characters */ - o_flags |= O_BINARY; - - /* Open the file */ - if ((fd=_open(name, o_flags, 0666))<0) - HSYS_GOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open file") - if (_fstati64(fd, &sb) == -1) - HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, NULL, "unable to fstat file") - -#else /* WINDOWS_USE_STDIO */ - /* Translate our flags into a mode, and open the file */ - if (_access_s(name, F_OK)) { - if ((flags & H5F_ACC_CREAT) && (flags & H5F_ACC_RDWR)) { - f = fopen(name, "wb+"); - write_access=1; /* Note the write access */ - } - else - HSYS_GOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "file doesn't exist and CREAT wasn't specified") - } else if ((flags & H5F_ACC_CREAT) && (flags & H5F_ACC_EXCL)) { - HSYS_GOTO_ERROR(H5E_FILE, H5E_FILEEXISTS, NULL, "file exists but CREAT and EXCL were specified") - } else if (flags & H5F_ACC_RDWR) { - if (flags & H5F_ACC_TRUNC) - f = fopen(name, "wb+"); - else - f = fopen(name, "rb+"); - write_access=1; /* Note the write access */ - } else - f = fopen(name, "rb"); - - if (!f) - HSYS_GOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "fsopen failed") - - if (_stati64(name, &sb) == -1) - HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, NULL, "unable to stat file") -#endif /* WINDOWS_USE_STDIO */ - - /* Create the new file struct */ - if (NULL==(file=H5FL_CALLOC(H5FD_windows_t))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "unable to allocate file struct") - - H5_ASSIGN_OVERFLOW(file->eof,sb.st_size,h5_stat_size_t,haddr_t); - file->pos = HADDR_UNDEF; - file->op = OP_UNKNOWN; - -#ifndef WINDOWS_USE_STDIO - file->fd = fd; -#else - file->fp = f; - if((fd = _fileno(f)) == -1) - HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to get file descriptor for file") - file->write_access=write_access; /* Note the write_access for later */ -#endif /* WINDOWS_USE_STDIO */ - - if( (filehandle = (HANDLE)_get_osfhandle(fd)) == INVALID_HANDLE_VALUE) - HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to get file handle for file") - if(!GetFileInformationByHandle(filehandle, &fileinfo)) - HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to get file information") - file->fileindexhi = fileinfo.nFileIndexHigh; - file->fileindexlo = fileinfo.nFileIndexLow; - file->volumeserialnumber = fileinfo.dwVolumeSerialNumber; - - /* Check for non-default FAPL */ - if(H5P_FILE_ACCESS_DEFAULT != fapl_id) { - H5P_genplist_t *plist; /* Property list pointer */ - - /* Get the FAPL */ - if(NULL == (plist = (H5P_genplist_t *)H5I_object(fapl_id))) - HGOTO_ERROR(H5E_VFL, H5E_BADTYPE, NULL, "not a file access property list") - - /* This step is for h5repart tool only. If user wants to change file driver from - * family to sec2 while using h5repart, this private property should be set so that - * in the later step, the library can ignore the family driver information saved - * in the superblock. - */ - if(H5P_exist_plist(plist, H5F_ACS_FAMILY_TO_SEC2_NAME) > 0) - if(H5P_get(plist, H5F_ACS_FAMILY_TO_SEC2_NAME, &file->fam_to_sec2) < 0) - HGOTO_ERROR(H5E_VFL, H5E_CANTGET, NULL, "can't get property of changing family to sec2") - } /* end if */ - - /* Set return value */ - ret_value=(H5FD_t*)file; - -done: - if(ret_value==NULL) { -#ifndef WINDOWS_USE_STDIO - if(fd>=0) - _close(fd); -#else - if(f) - fclose(file->fp); -#endif /* WINDOWS_USE_STDIO */ - } /* end if */ - - FUNC_LEAVE_NOAPI(ret_value) -} - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_close - * - * Purpose: Closes a Windows file. - * - * Return: Success: 0 - * - * Failure: -1, file not closed. - * - * Programmer: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -static herr_t -H5FD_windows_close(H5FD_t *_file) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; - herr_t ret_value=SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_close, FAIL) - -#ifndef WINDOWS_USE_STDIO - if (_close(file->fd)<0) -#else - if (fclose(file->fp)<0) -#endif /* WINDOWS_USE_STDIO */ - HSYS_GOTO_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file") - - H5FL_FREE(H5FD_windows_t,file); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_cmp - * - * Purpose: Compares two files belonging to this driver using an - * arbitrary (but consistent) ordering. - * - * Return: Success: A value like strcmp() - * - * Failure: never fails (arguments were checked by the - * caller). - * - * Programmer: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -static int -H5FD_windows_cmp(const H5FD_t *_f1, const H5FD_t *_f2) -{ - const H5FD_windows_t *f1 = (const H5FD_windows_t*)_f1; - const H5FD_windows_t *f2 = (const H5FD_windows_t*)_f2; - int ret_value=0; - - FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_windows_cmp) - - if (f1->volumeserialnumber < f2->volumeserialnumber) HGOTO_DONE(-1) - if (f1->volumeserialnumber > f2->volumeserialnumber) HGOTO_DONE(1) - - 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) - - -done: - FUNC_LEAVE_NOAPI(ret_value) -} - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_query - * - * Purpose: Set the flags that this VFL driver is capable of supporting. - * (listed in H5FDpublic.h) - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: Scott Wegner - Based on code by Quincey Koziol - * Thursday, May 24 2007 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5FD_windows_query(const H5FD_t *_file, unsigned long *flags /* out */) -{ - const H5FD_windows_t *file = (const H5FD_windows_t*)_file; /* windows VFD info */ - - FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_windows_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 */ - - /* Check for flags that are set by h5repart */ - if(file->fam_to_sec2) - *flags |= H5FD_FEAT_IGNORE_DRVRINFO; /* Ignore the driver info when file is opened (which eliminates it) */ - } /* end if */ - -done: - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5FD_windows_query() */ - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_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: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -static haddr_t -H5FD_windows_get_eoa(const H5FD_t *_file, H5FD_mem_t UNUSED type) -{ - const H5FD_windows_t *file = (const H5FD_windows_t*)_file; - haddr_t ret_value; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_get_eoa, HADDR_UNDEF) - - /* Set return value */ - ret_value=file->eoa; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} - - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_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: Scott Wegner - * Based on code by Robb Matzke - * Thursday, July 29, 1999 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -static herr_t -H5FD_windows_set_eoa(H5FD_t *_file, H5FD_mem_t UNUSED type, haddr_t addr) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; - herr_t ret_value=SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_set_eoa, FAIL) - - file->eoa = addr; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_get_eof - * - * Purpose: Returns the end-of-file marker, which is the greater of - * either the Windows end-of-file or the HDF5 end-of-address - * markers. - * - * Return: Success: End of file address, the first address past - * the end of the "file", either the Unix file - * or the HDF5 file. - * - * Failure: HADDR_UNDEF - * - * Programmer: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -static haddr_t -H5FD_windows_get_eof(const H5FD_t *_file) -{ - const H5FD_windows_t *file = (const H5FD_windows_t*)_file; - haddr_t ret_value; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_get_eof, HADDR_UNDEF) - - /* Set return value */ - ret_value=MAX(file->eof, file->eoa); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} - - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_get_handle - * - * Purpose: Returns the file handle of windows file driver. - * - * Returns: Non-negative if succeed or negative if fails. - * - * Programmer: Scott Wegner - Based on code by Raymond Lu - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -/* ARGSUSED */ -static herr_t -H5FD_windows_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle) -{ - H5FD_windows_t *file = (H5FD_windows_t *)_file; - herr_t ret_value = SUCCEED; - - FUNC_ENTER_NOAPI(H5FD_windows_get_handle, FAIL) - - if(!file_handle) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid") -#ifndef WINDOWS_USE_STDIO - *file_handle = &(file->fd); -#else - *file_handle = &(file->fp); -#endif /* WINDOWS_USE_STDIO */ - if(*file_handle==NULL) - HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "get handle failed") - - -done: - FUNC_LEAVE_NOAPI(ret_value) -} - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_alloc - * - * Purpose: Allocates file memory. - * - * Return: Success: Address of new memory - * - * Failure: HADDR_UNDEF - * - * Programmer: Scott Wegner - Based on code by Raymond Lu - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -static haddr_t -H5FD_windows_alloc(H5FD_t *_file, H5FD_mem_t UNUSED type, hid_t UNUSED dxpl_id, hsize_t size) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; - haddr_t addr; - haddr_t ret_value; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_alloc, HADDR_UNDEF) - - /* Compute the address for the block to allocate */ - addr = file->eoa; - - /* Check if we need to align this block */ - if(size >= file->pub.threshold) { - /* Check for an already aligned block */ - if((addr % file->pub.alignment) != 0) - addr = ((addr / file->pub.alignment) + 1) * file->pub.alignment; - } - - - file->eoa = addr + size; - - /* Set return value */ - ret_value = addr; - -done: - FUNC_LEAVE_NOAPI(ret_value) - -} - - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_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: Scott Wegner - Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -/* ARGSUSED */ -static herr_t -H5FD_windows_read(H5FD_t *_file, H5FD_mem_t UNUSED type, hid_t UNUSED dxpl_id, haddr_t addr, - size_t size, void *buf/*out*/) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; - int nbytes; - herr_t ret_value=SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_read, FAIL) - - assert(file && file->pub.cls); - assert(buf); - - /* Check for overflow conditions */ - if (HADDR_UNDEF==addr) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "addr undefined") - if (REGION_OVERFLOW(addr, size)) - HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow") - if((addr + size) > file->eoa) - HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow") - - /* Seek to the correct location */ - if ((addr!=file->pos || OP_READ!=file->op)) -#ifndef WINDOWS_USE_STDIO - if (_lseeki64(file->fd, addr, SEEK_SET) == -1) { -#else - if (_fseeki64(file->fp, addr, SEEK_SET) == -1) { -#endif /* WINDOWS_USE_STDIO */ - file->op = OP_UNKNOWN; - file->pos = HADDR_UNDEF; - HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position") - } - - /* - * Read data, being careful of interrupted system calls, partial results, - * and the end of the file. - */ - while (size>0) { -#ifndef WINDOWS_USE_STDIO - do { - nbytes = _read(file->fd, buf, (unsigned)(size <= WINDOWS_MAX_BUF ? size: WINDOWS_MAX_BUF)); - } while (-1==nbytes && EINTR==errno); - if (-1==nbytes) /* error */ - HSYS_GOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "file read failed") - if (0==nbytes) { - /* end of file but not end of format address space */ - HDmemset(buf, 0, size); - break; - } -#else - do { - nbytes = fread(buf,(size_t)1,(size <= WINDOWS_MAX_BUF ? size: WINDOWS_MAX_BUF),file->fp); - } while (!nbytes && EINTR==errno); - if(!nbytes) { - if (ferror(file->fp)) /* error */ - HSYS_GOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "file read failed") - if (feof(file->fp)) { - /* end of file but not end of format address space */ - HDmemset(buf, 0, size); - break; - } - } -#endif /* WINDOWS_USE_STDIO */ - assert(nbytes>=0); - assert((size_t)nbytes<=size); - H5_CHECK_OVERFLOW(nbytes,ssize_t,size_t); - size -= (size_t)nbytes; - H5_CHECK_OVERFLOW(nbytes,ssize_t,haddr_t); - addr += (haddr_t)nbytes; - buf = (char*)buf + nbytes; - } - - /* Update current position */ - file->pos = addr; - file->op = OP_READ; - -done: - if(ret_value<0) { - /* Reset last file I/O information */ - file->pos = HADDR_UNDEF; - file->op = OP_UNKNOWN; - } /* end if */ - - FUNC_LEAVE_NOAPI(ret_value) -} - - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_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: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - * Modifications: - * - *------------------------------------------------------------------------- - */ -/* ARGSUSED */ -static herr_t -H5FD_windows_write(H5FD_t *_file, H5FD_mem_t UNUSED type, hid_t UNUSED dxpl_id, haddr_t addr, - size_t size, const void *buf) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; - ssize_t nbytes; - herr_t ret_value=SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_write, FAIL) - - assert(file && file->pub.cls); - assert(buf); - - /* Check for overflow conditions */ - if (HADDR_UNDEF==addr) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "addr undefined") - if (REGION_OVERFLOW(addr, size)) - HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow") - if (addr+size>file->eoa) - HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow") - - /* Seek to the correct location */ - if ((addr!=file->pos || OP_WRITE!=file->op)) - { -#ifndef WINDOWS_USE_STDIO - if (_lseeki64(file->fd, addr, SEEK_SET) == -1) { -#else - if (_fseeki64(file->fp, addr, SEEK_SET) == -1) { -#endif /* WINDOWS_USE_STDIO */ - file->op = OP_UNKNOWN; - file->pos = HADDR_UNDEF; - HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position") - } - } - - /* - * Write the data, being careful of interrupted system calls and partial - * results - */ - while (size>0) { - do { -#ifndef WINDOWS_USE_STDIO - nbytes = _write(file->fd, buf, (unsigned)(size <= WINDOWS_MAX_BUF ? size: WINDOWS_MAX_BUF)); - } while (-1==nbytes && EINTR==errno); - if (-1==nbytes) /* error */ -#else - - - /* Write 1GB or less at a time */ - nbytes = fwrite(buf, 1, (size <= WINDOWS_MAX_BUF ? size: WINDOWS_MAX_BUF),file->fp); - } while (!nbytes && EINTR==errno); - if (!nbytes) /* error */ -#endif /* WINDOWS_USE_STDIO */ - HSYS_GOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "file write failed") - assert(nbytes>0); - assert((size_t)nbytes<=size); - H5_CHECK_OVERFLOW(nbytes,ssize_t,size_t); - size -= (size_t)nbytes; - H5_CHECK_OVERFLOW(nbytes,ssize_t,haddr_t); - addr += (haddr_t)nbytes; - buf = (const char*)buf + nbytes; - } - - /* Update current position and eof */ - file->pos = addr; - file->op = OP_WRITE; - if (file->pos>file->eof) - file->eof = file->pos; - -done: - if(ret_value<0) { - /* Reset last file I/O information */ - file->pos = HADDR_UNDEF; - file->op = OP_UNKNOWN; - } /* end if */ - - FUNC_LEAVE_NOAPI(ret_value) -} - - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_flush - * - * 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: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - *------------------------------------------------------------------------- - */ -/* ARGSUSED */ -static herr_t -H5FD_windows_flush(H5FD_t *_file, hid_t UNUSED dxpl_id, unsigned closing) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_flush, FAIL) - - HDassert(file); - - /* Only try to flush if we have write access */ - if(file->write_access) { - /* Flush */ - if(!closing) { -#ifdef WINDOWS_USE_STDIO - if(fflush(file->fp) == EOF) - HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "fflush failed") -#endif /* WINDOWS_USE_STDIO */ - - /* Reset last file I/O information */ - file->pos = HADDR_UNDEF; - file->op = OP_UNKNOWN; - } /* end if */ - } /* end if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5FD_windows_flush() */ - - -/*------------------------------------------------------------------------- - * Function: H5FD_windows_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: Scott Wegner - * Based on code by Robb Matzke - * Thursday, May 24 2007 - * - *------------------------------------------------------------------------- - */ -/* ARGSUSED */ -static herr_t -H5FD_windows_truncate(H5FD_t *_file, hid_t UNUSED dxpl_id, hbool_t UNUSED closing) -{ - H5FD_windows_t *file = (H5FD_windows_t*)_file; -#ifndef WINDOWS_USE_STDIO - LARGE_INTEGER li; - HANDLE filehandle; -#else - int fd; -#endif /* WINDOWS_USE_STDIO */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(H5FD_windows_truncate, FAIL) - - HDassert(file); - - if(file->eoa != file->eof) { -#ifndef WINDOWS_USE_STDIO - /* Extend the file to make sure it's large enough */ - if((filehandle = (HANDLE)_get_osfhandle(file->fd)) == INVALID_HANDLE_VALUE) - HGOTO_ERROR(H5E_FILE, H5E_FILEOPEN, FAIL, "unable to get file handle for file") - - li.QuadPart = (__int64)file->eoa; - (void)SetFilePointer((HANDLE)filehandle, li.LowPart, &li.HighPart, FILE_BEGIN); - if(SetEndOfFile(filehandle) == 0) - HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to extend file properly") -#else /* WINDOWS_USE_STDIO */ - /* Only try to flush if we have write access */ - if(!file->write_access) - HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "cannot flush without write access") - - if((fd = _fileno(file->fp)) == -1) - HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, FAIL, "unable to get file descriptor for file") - if(_chsize_s(fd, file->eoa)) - HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to extend file properly") -#endif /* WINDOWS_USE_STDIO */ - - /* Update the eof value */ - file->eof = file->eoa; - - /* Reset last file I/O information */ - file->pos = HADDR_UNDEF; - file->op = OP_UNKNOWN; - } /* end if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5FD_windows_truncate() */ +} /* end H5Pset_fapl_windows() */ #endif /* H5_HAVE_WINDOWS */ |