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|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: The IOC VFD implements a file driver which relays all the
* VFD calls to an underlying VFD, and send all the write calls to
* another underlying VFD. Maintains two files simultaneously.
*/
/* This source code file is part of the H5FD driver module */
#include "H5FDdrvr_module.h"
#include "H5private.h" /* Generic Functions */
#include "H5FDpublic.h" /* Basic H5FD definitions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FDprivate.h" /* File drivers */
#include "H5FDioc.h" /* IOC file driver */
#include "H5FDioc_priv.h" /* IOC file driver */
#include "H5FDmpio.h" /* MPI I/O VFD */
#include "H5FLprivate.h" /* Free Lists */
#include "H5Fprivate.h" /* File access */
#include "H5Iprivate.h" /* IDs */
#include "H5MMprivate.h" /* Memory management */
#include "H5Pprivate.h" /* Property lists */
/* The driver identification number, initialized at runtime */
static hid_t H5FD_IOC_g = H5I_INVALID_HID;
/* Whether the driver initialized MPI on its own */
static hbool_t H5FD_mpi_self_initialized = FALSE;
/* Pointer to value for MPI_TAG_UB */
int *H5FD_IOC_tag_ub_val_ptr = NULL;
/* The information of this ioc */
typedef struct H5FD_ioc_t {
H5FD_t pub; /* public stuff, must be first */
int fd; /* the filesystem file descriptor */
H5FD_ioc_config_t fa; /* driver-specific file access properties */
H5FD_subfiling_params_t subf_config;
/* MPI Info */
MPI_Comm comm;
MPI_Info info;
int mpi_rank;
int mpi_size;
uint64_t file_id;
int64_t context_id; /* The value used to lookup a subfiling context for the file */
haddr_t eof;
haddr_t eoa;
haddr_t last_eoa;
haddr_t local_eof;
char *file_dir; /* Directory where we find files */
char *file_path; /* The user defined filename */
} H5FD_ioc_t;
/*
* These macros check for overflow of various quantities. These macros
* assume that HDoff_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(HDoff_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) || (HDoff_t)((A) + (Z)) < (HDoff_t)(A))
#ifdef H5FD_IOC_DEBUG
#define H5FD_IOC_LOG_CALL(name) \
do { \
HDprintf("called %s()\n", (name)); \
HDfflush(stdout); \
} while (0)
#else
#define H5FD_IOC_LOG_CALL(name) /* no-op */
#endif
/* Private functions */
/* Prototypes */
static herr_t H5FD__ioc_term(void);
static hsize_t H5FD__ioc_sb_size(H5FD_t *_file);
static herr_t H5FD__ioc_sb_encode(H5FD_t *_file, char *name /*out*/, unsigned char *buf /*out*/);
static herr_t H5FD__ioc_sb_decode(H5FD_t *_file, const char *name, const unsigned char *buf);
static void *H5FD__ioc_fapl_get(H5FD_t *_file);
static void *H5FD__ioc_fapl_copy(const void *_old_fa);
static herr_t H5FD__ioc_fapl_free(void *_fapl);
static H5FD_t *H5FD__ioc_open(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr);
static herr_t H5FD__ioc_close(H5FD_t *_file);
static int H5FD__ioc_cmp(const H5FD_t *_f1, const H5FD_t *_f2);
static herr_t H5FD__ioc_query(const H5FD_t *_file, unsigned long *flags /* out */);
static herr_t H5FD__ioc_get_type_map(const H5FD_t *_file, H5FD_mem_t *type_map);
static haddr_t H5FD__ioc_alloc(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
static herr_t H5FD__ioc_free(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t size);
static haddr_t H5FD__ioc_get_eoa(const H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type);
static herr_t H5FD__ioc_set_eoa(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, haddr_t addr);
static haddr_t H5FD__ioc_get_eof(const H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type);
static herr_t H5FD__ioc_get_handle(H5FD_t *_file, hid_t H5_ATTR_UNUSED fapl, void **file_handle);
static herr_t H5FD__ioc_read(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
void *buf);
static herr_t H5FD__ioc_write(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
const void *buf);
static herr_t H5FD__ioc_read_vector(H5FD_t *file, hid_t dxpl_id, uint32_t count, H5FD_mem_t types[],
haddr_t addrs[], size_t sizes[], void *bufs[] /* out */);
static herr_t H5FD__ioc_write_vector(H5FD_t *file, hid_t dxpl_id, uint32_t count, H5FD_mem_t types[],
haddr_t addrs[], size_t sizes[], const void *bufs[] /* in */);
static herr_t H5FD__ioc_flush(H5FD_t *_file, hid_t dxpl_id, hbool_t closing);
static herr_t H5FD__ioc_truncate(H5FD_t *_file, hid_t dxpl_id, hbool_t closing);
static herr_t H5FD__ioc_lock(H5FD_t *_file, hbool_t rw);
static herr_t H5FD__ioc_unlock(H5FD_t *_file);
static herr_t H5FD__ioc_del(const char *name, hid_t fapl);
/*
static herr_t H5FD__ioc_ctl(H5FD_t *file, uint64_t op_code, uint64_t flags,
const void *input, void **result);
*/
static herr_t H5FD__ioc_get_default_config(H5FD_ioc_config_t *config_out);
static herr_t H5FD__ioc_validate_config(const H5FD_ioc_config_t *fa);
static herr_t H5FD__ioc_close_int(H5FD_ioc_t *file_ptr);
static herr_t H5FD__ioc_write_vector_internal(H5FD_t *_file, uint32_t count, H5FD_mem_t types[],
haddr_t addrs[], size_t sizes[],
const void *bufs[] /* data_in */);
static herr_t H5FD__ioc_read_vector_internal(H5FD_t *_file, uint32_t count, haddr_t addrs[], size_t sizes[],
void *bufs[] /* data_out */);
static const H5FD_class_t H5FD_ioc_g = {
H5FD_CLASS_VERSION, /* VFD interface version */
H5_VFD_IOC, /* value */
H5FD_IOC_NAME, /* name */
MAXADDR, /* maxaddr */
H5F_CLOSE_WEAK, /* fc_degree */
H5FD__ioc_term, /* terminate */
H5FD__ioc_sb_size, /* sb_size */
H5FD__ioc_sb_encode, /* sb_encode */
H5FD__ioc_sb_decode, /* sb_decode */
sizeof(H5FD_ioc_config_t), /* fapl_size */
H5FD__ioc_fapl_get, /* fapl_get */
H5FD__ioc_fapl_copy, /* fapl_copy */
H5FD__ioc_fapl_free, /* fapl_free */
0, /* dxpl_size */
NULL, /* dxpl_copy */
NULL, /* dxpl_free */
H5FD__ioc_open, /* open */
H5FD__ioc_close, /* close */
H5FD__ioc_cmp, /* cmp */
H5FD__ioc_query, /* query */
H5FD__ioc_get_type_map, /* get_type_map */
H5FD__ioc_alloc, /* alloc */
H5FD__ioc_free, /* free */
H5FD__ioc_get_eoa, /* get_eoa */
H5FD__ioc_set_eoa, /* set_eoa */
H5FD__ioc_get_eof, /* get_eof */
H5FD__ioc_get_handle, /* get_handle */
H5FD__ioc_read, /* read */
H5FD__ioc_write, /* write */
H5FD__ioc_read_vector, /* read_vector */
H5FD__ioc_write_vector, /* write_vector */
NULL, /* read_selection */
NULL, /* write_selection */
H5FD__ioc_flush, /* flush */
H5FD__ioc_truncate, /* truncate */
H5FD__ioc_lock, /* lock */
H5FD__ioc_unlock, /* unlock */
H5FD__ioc_del, /* del */
NULL, /* ctl */
H5FD_FLMAP_DICHOTOMY /* fl_map */
};
/* Declare a free list to manage the H5FD_ioc_t struct */
H5FL_DEFINE_STATIC(H5FD_ioc_t);
/* Declare a free list to manage the H5FD_ioc_config_t struct */
H5FL_DEFINE_STATIC(H5FD_ioc_config_t);
/*-------------------------------------------------------------------------
* Function: H5FD_ioc_init
*
* Purpose: Initialize the IOC driver by registering it with the
* library.
*
* Return: Success: The driver ID for the ioc driver.
* Failure: Negative
*-------------------------------------------------------------------------
*/
hid_t
H5FD_ioc_init(void)
{
hid_t ret_value = H5I_INVALID_HID;
H5FD_IOC_LOG_CALL(__func__);
/* Register the IOC VFD, if it isn't already registered */
if (H5I_VFL != H5I_get_type(H5FD_IOC_g)) {
char *env_var;
int key_val_retrieved = 0;
int mpi_code;
if ((H5FD_IOC_g = H5FD_register(&H5FD_ioc_g, sizeof(H5FD_class_t), FALSE)) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_ID, H5E_CANTREGISTER, H5I_INVALID_HID, "can't register IOC VFD");
/* Check if IOC VFD has been loaded dynamically */
env_var = HDgetenv(HDF5_DRIVER);
if (env_var && !HDstrcmp(env_var, H5FD_IOC_NAME)) {
int mpi_initialized = 0;
int provided = 0;
/* Initialize MPI if not already initialized */
if (MPI_SUCCESS != (mpi_code = MPI_Initialized(&mpi_initialized)))
H5_SUBFILING_MPI_GOTO_ERROR(H5I_INVALID_HID, "MPI_Initialized failed", mpi_code);
if (mpi_initialized) {
/* If MPI is initialized, validate that it was initialized with MPI_THREAD_MULTIPLE */
if (MPI_SUCCESS != (mpi_code = MPI_Query_thread(&provided)))
H5_SUBFILING_MPI_GOTO_ERROR(H5I_INVALID_HID, "MPI_Query_thread failed", mpi_code);
if (provided != MPI_THREAD_MULTIPLE)
H5_SUBFILING_GOTO_ERROR(
H5E_VFL, H5E_CANTINIT, H5I_INVALID_HID,
"IOC VFD requires the use of MPI_Init_thread with MPI_THREAD_MULTIPLE");
}
else {
int required = MPI_THREAD_MULTIPLE;
/* Otherwise, initialize MPI */
if (MPI_SUCCESS != (mpi_code = MPI_Init_thread(NULL, NULL, required, &provided)))
H5_SUBFILING_MPI_GOTO_ERROR(H5I_INVALID_HID, "MPI_Init_thread failed", mpi_code);
H5FD_mpi_self_initialized = TRUE;
if (provided != required)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTINIT, H5I_INVALID_HID,
"MPI doesn't support MPI_Init_thread with MPI_THREAD_MULTIPLE");
}
}
/* Retrieve upper bound for MPI message tag value */
if (MPI_SUCCESS != (mpi_code = MPI_Comm_get_attr(MPI_COMM_WORLD, MPI_TAG_UB, &H5FD_IOC_tag_ub_val_ptr,
&key_val_retrieved)))
H5_SUBFILING_MPI_GOTO_ERROR(H5I_INVALID_HID, "MPI_Comm_get_attr failed", mpi_code);
if (!key_val_retrieved)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTINIT, H5I_INVALID_HID,
"couldn't retrieve value for MPI_TAG_UB");
}
ret_value = H5FD_IOC_g;
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD_ioc_init() */
/*---------------------------------------------------------------------------
* Function: H5FD__ioc_term
*
* Purpose: Shut down the IOC VFD.
*
* Returns: SUCCEED (Can't fail)
*---------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_term(void)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
if (H5FD_IOC_g >= 0) {
/* Terminate MPI if the driver initialized it */
if (H5FD_mpi_self_initialized) {
int mpi_finalized = 0;
int mpi_code;
if (MPI_SUCCESS != (mpi_code = MPI_Finalized(&mpi_finalized)))
H5_SUBFILING_MPI_GOTO_ERROR(FAIL, "MPI_Finalized failed", mpi_code);
if (!mpi_finalized) {
if (MPI_SUCCESS != (mpi_code = MPI_Finalize()))
H5_SUBFILING_MPI_GOTO_ERROR(FAIL, "MPI_Finalize failed", mpi_code);
}
H5FD_mpi_self_initialized = FALSE;
}
}
done:
/* Reset VFL ID */
H5FD_IOC_g = H5I_INVALID_HID;
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_term() */
/*-------------------------------------------------------------------------
* Function: H5Pset_fapl_ioc
*
* Purpose: Sets the file access property list to use the
* ioc driver.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
herr_t
H5Pset_fapl_ioc(hid_t fapl_id, H5FD_ioc_config_t *vfd_config)
{
H5FD_ioc_config_t *ioc_conf = NULL;
H5P_genplist_t *plist_ptr = NULL;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
if (NULL == (plist_ptr = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list");
if (vfd_config == NULL) {
if (NULL == (ioc_conf = H5FL_CALLOC(H5FD_ioc_config_t)))
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL,
"can't allocate IOC VFD configuration");
/* Get IOC VFD defaults */
if (H5FD__ioc_get_default_config(ioc_conf) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't get default IOC VFD configuration");
vfd_config = ioc_conf;
}
if (H5FD__ioc_validate_config(vfd_config) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid IOC VFD configuration");
ret_value = H5P_set_driver(plist_ptr, H5FD_IOC, vfd_config, NULL);
done:
if (ioc_conf) {
H5FL_FREE(H5FD_ioc_config_t, ioc_conf);
}
H5_SUBFILING_FUNC_LEAVE;
} /* end H5Pset_fapl_ioc() */
/*-------------------------------------------------------------------------
* Function: H5Pget_fapl_ioc
*
* Purpose: Returns information about the ioc file access property
* list through the structure config_out.
*
* Will fail if config_out is received without pre-set valid
* magic and version information.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
herr_t
H5Pget_fapl_ioc(hid_t fapl_id, H5FD_ioc_config_t *config_out)
{
const H5FD_ioc_config_t *config_ptr = NULL;
H5P_genplist_t *plist_ptr = NULL;
hbool_t use_default_config = FALSE;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* Check arguments */
if (config_out == NULL)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "config_out is NULL");
if (NULL == (plist_ptr = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list");
if (H5FD_IOC != H5P_peek_driver(plist_ptr))
use_default_config = TRUE;
else {
config_ptr = H5P_peek_driver_info(plist_ptr);
if (NULL == config_ptr)
use_default_config = TRUE;
}
if (use_default_config) {
if (H5FD__ioc_get_default_config(config_out) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get default IOC VFD configuration");
}
else {
/* Copy the IOC fapl data out */
HDmemcpy(config_out, config_ptr, sizeof(H5FD_ioc_config_t));
}
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5Pget_fapl_ioc() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_get_default_config
*
* Purpose: This is called by H5Pset/get_fapl_ioc when called with no
* established configuration info. This simply fills in
* the basics. This avoids the necessity of having the
* user write code to initialize the config structure.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_get_default_config(H5FD_ioc_config_t *config_out)
{
herr_t ret_value = SUCCEED;
HDassert(config_out);
HDmemset(config_out, 0, sizeof(*config_out));
config_out->magic = H5FD_IOC_FAPL_MAGIC;
config_out->version = H5FD_IOC_CURR_FAPL_VERSION;
config_out->thread_pool_size = H5FD_IOC_DEFAULT_THREAD_POOL_SIZE;
H5_SUBFILING_FUNC_LEAVE;
}
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_validate_config()
*
* Purpose: Test to see if the supplied instance of
* H5FD_ioc_config_t contains internally consistent data.
* Return SUCCEED if so, and FAIL otherwise.
*
* Note the difference between internally consistent and
* correct. As we will have to try to setup the IOC to
* determine whether the supplied data is correct,
* we will settle for internal consistency at this point
*
* Return: SUCCEED if instance of H5FD_ioc_config_t contains
* internally consistent data, FAIL otherwise.
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_validate_config(const H5FD_ioc_config_t *fa)
{
herr_t ret_value = SUCCEED;
HDassert(fa != NULL);
if (fa->version != H5FD_IOC_CURR_FAPL_VERSION)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Unknown H5FD_ioc_config_t version");
if (fa->magic != H5FD_IOC_FAPL_MAGIC)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid H5FD_ioc_config_t magic value");
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_validate_config() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_sb_size
*
* Purpose: Obtains the number of bytes required to store the driver
* file access data in the HDF5 superblock.
*
* Return: Success: Number of bytes required.
*
* Failure: 0 if an error occurs or if the driver has no
* data to store in the superblock.
*
*-------------------------------------------------------------------------
*/
static hsize_t
H5FD__ioc_sb_size(H5FD_t H5_ATTR_UNUSED *_file)
{
hsize_t ret_value = 0;
H5FD_IOC_LOG_CALL(__func__);
/* Configuration structure magic number */
ret_value += sizeof(uint32_t);
/* Configuration structure version number */
ret_value += sizeof(uint32_t);
/* IOC thread pool size */
ret_value += sizeof(int32_t);
/* Subfiling stripe size */
ret_value += sizeof(int64_t);
/* Subfiling stripe count (encoded as int64_t for future) */
ret_value += sizeof(int64_t);
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_sb_size */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_sb_encode
*
* Purpose: Encode driver-specific data into the output arguments.
*
* Return: Non-negative on success/Negative on failure
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_sb_encode(H5FD_t *_file, char *name, unsigned char *buf)
{
subfiling_context_t *sf_context = NULL;
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
uint8_t *p = (uint8_t *)buf;
int64_t tmp64;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
if (NULL == (sf_context = H5_get_subfiling_object(file->context_id)))
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "can't get subfiling context object");
/* Encode driver name */
HDstrncpy(name, "IOC", 9);
name[8] = '\0';
/* Encode configuration structure magic number */
UINT32ENCODE(p, file->fa.magic);
/* Encode configuration structure version number */
UINT32ENCODE(p, file->fa.version);
/* Encode thread pool size field */
INT32ENCODE(p, file->fa.thread_pool_size);
/* Encode subfiling stripe size */
INT64ENCODE(p, sf_context->sf_stripe_size);
/* Encode subfiling stripe count (number of subfiles) */
tmp64 = sf_context->sf_num_subfiles;
INT64ENCODE(p, tmp64);
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_sb_encode */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_sb_decode
*
* Purpose: Decodes the driver information block.
*
* Return: Non-negative on success/Negative on failure
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_sb_decode(H5FD_t *_file, const char *name, const unsigned char *buf)
{
subfiling_context_t *sf_context = NULL;
const uint8_t *p = (const uint8_t *)buf;
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
int64_t tmp64;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
if (NULL == (sf_context = H5_get_subfiling_object(file->context_id)))
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "can't get subfiling context object");
if (HDstrncmp(name, "IOC", 9))
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_BADVALUE, FAIL, "invalid driver name in superblock");
/* Decode configuration structure magic number */
UINT32DECODE(p, file->fa.magic);
/* Decode configuration structure version number */
UINT32DECODE(p, file->fa.version);
/* Decode thread pool size field */
INT32DECODE(p, file->fa.thread_pool_size);
/* Decode subfiling stripe size */
INT64DECODE(p, file->subf_config.stripe_size);
/* Decode subfiling stripe count */
INT64DECODE(p, tmp64);
H5_CHECK_OVERFLOW(tmp64, int64_t, int32_t);
file->subf_config.stripe_count = (int32_t)tmp64;
/* Validate the decoded configuration */
if (H5FD__ioc_validate_config(&file->fa) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_BADVALUE, FAIL, "decoded IOC VFD configuration info is invalid");
if (H5_subfiling_validate_config(&file->subf_config) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_BADVALUE, FAIL,
"decoded subfiling configuration parameters are invalid");
if (file->subf_config.stripe_size != sf_context->sf_stripe_size)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_BADVALUE, FAIL,
"specified subfiling stripe size (%" PRId64
") doesn't match value stored in file (%" PRId64 ")",
sf_context->sf_stripe_size, file->subf_config.stripe_size);
if (file->subf_config.stripe_count != sf_context->sf_num_subfiles)
H5_SUBFILING_GOTO_ERROR(
H5E_VFL, H5E_BADVALUE, FAIL,
"specified subfiling stripe count (%d) doesn't match value stored in file (%" PRId32 ")",
sf_context->sf_num_subfiles, file->subf_config.stripe_count);
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_sb_decode */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_fapl_get
*
* Purpose: Returns a file access property list which indicates how the
* specified file is being accessed. The return list could be
* used to access another file the same way.
*
* Return: Success: Ptr to new file access property list with all
* members copied from the file struct.
* Failure: NULL
*-------------------------------------------------------------------------
*/
static void *
H5FD__ioc_fapl_get(H5FD_t *_file)
{
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
void *ret_value = NULL;
H5FD_IOC_LOG_CALL(__func__);
ret_value = H5FD__ioc_fapl_copy(&(file->fa));
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_fapl_get() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_fapl_copy
*
* Purpose: Copies the file access properties.
*
* Return: Success: Pointer to a new property list info structure.
* Failure: NULL
*-------------------------------------------------------------------------
*/
static void *
H5FD__ioc_fapl_copy(const void *_old_fa)
{
const H5FD_ioc_config_t *old_fa_ptr = (const H5FD_ioc_config_t *)_old_fa;
H5FD_ioc_config_t *new_fa_ptr = NULL;
void *ret_value = NULL;
H5FD_IOC_LOG_CALL(__func__);
HDassert(old_fa_ptr);
new_fa_ptr = H5FL_CALLOC(H5FD_ioc_config_t);
if (NULL == new_fa_ptr)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTALLOC, NULL, "unable to allocate log file FAPL");
HDmemcpy(new_fa_ptr, old_fa_ptr, sizeof(H5FD_ioc_config_t));
ret_value = (void *)new_fa_ptr;
done:
if (NULL == ret_value)
if (new_fa_ptr)
new_fa_ptr = H5FL_FREE(H5FD_ioc_config_t, new_fa_ptr);
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_fapl_copy() */
/*--------------------------------------------------------------------------
* Function: H5FD__ioc_fapl_free
*
* Purpose: Releases the file access lists
*
* Return: SUCCEED/FAIL
*--------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_fapl_free(void *_fapl)
{
H5FD_ioc_config_t *fapl = (H5FD_ioc_config_t *)_fapl;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* Check arguments */
HDassert(fapl);
/* Free the property list */
fapl = H5FL_FREE(H5FD_ioc_config_t, fapl);
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_fapl_free() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_open
*
* Purpose: Create and/or opens a 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
*-------------------------------------------------------------------------
*/
static H5FD_t *
H5FD__ioc_open(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr)
{
H5FD_ioc_t *file_ptr = NULL; /* Ioc VFD info */
const H5FD_ioc_config_t *config_ptr = NULL; /* Driver-specific property list */
subfiling_context_t *sf_context = NULL;
H5FD_ioc_config_t default_config;
H5P_genplist_t *plist_ptr = NULL;
int ioc_flags;
int mpi_inited = 0;
int mpi_code; /* MPI return code */
H5FD_t *ret_value = NULL;
H5FD_IOC_LOG_CALL(__func__);
/* Check arguments */
if (!name || !*name)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "invalid file name");
if (0 == maxaddr || HADDR_UNDEF == maxaddr)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADRANGE, NULL, "bogus maxaddr");
if (ADDR_OVERFLOW(maxaddr))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, NULL, "bogus maxaddr");
if (NULL == (file_ptr = (H5FD_ioc_t *)H5FL_CALLOC(H5FD_ioc_t)))
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTALLOC, NULL, "unable to allocate file struct");
file_ptr->comm = MPI_COMM_NULL;
file_ptr->info = MPI_INFO_NULL;
file_ptr->file_id = UINT64_MAX;
file_ptr->context_id = -1;
/* Initialize file pointer's subfiling parameters */
file_ptr->subf_config.ioc_selection = SELECT_IOC_ONE_PER_NODE;
file_ptr->subf_config.stripe_size = H5FD_SUBFILING_DEFAULT_STRIPE_SIZE;
file_ptr->subf_config.stripe_count = H5FD_SUBFILING_DEFAULT_STRIPE_COUNT;
/* Get the driver-specific file access properties */
if (NULL == (plist_ptr = (H5P_genplist_t *)H5I_object(fapl_id)))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a file access property list");
if (H5FD_mpi_self_initialized) {
file_ptr->comm = MPI_COMM_WORLD;
file_ptr->info = MPI_INFO_NULL;
mpi_inited = 1;
}
else {
/* Get the MPI communicator and info object from the property list */
if (H5P_get(plist_ptr, H5F_ACS_MPI_PARAMS_COMM_NAME, &file_ptr->comm) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTGET, NULL, "can't get MPI communicator");
if (H5P_get(plist_ptr, H5F_ACS_MPI_PARAMS_INFO_NAME, &file_ptr->info) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTGET, NULL, "can't get MPI info object");
if (file_ptr->comm == MPI_COMM_NULL)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_BADVALUE, NULL, "invalid or unset MPI communicator in FAPL");
/* Get the status of MPI initialization */
if (MPI_SUCCESS != (mpi_code = MPI_Initialized(&mpi_inited)))
H5_SUBFILING_MPI_GOTO_ERROR(NULL, "MPI_Initialized failed", mpi_code);
if (!mpi_inited)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_UNINITIALIZED, NULL, "MPI has not been initialized");
}
/* Get the MPI rank of this process and the total number of processes */
if (MPI_SUCCESS != (mpi_code = MPI_Comm_rank(file_ptr->comm, &file_ptr->mpi_rank)))
H5_SUBFILING_MPI_GOTO_ERROR(NULL, "MPI_Comm_rank failed", mpi_code);
if (MPI_SUCCESS != (mpi_code = MPI_Comm_size(file_ptr->comm, &file_ptr->mpi_size)))
H5_SUBFILING_MPI_GOTO_ERROR(NULL, "MPI_Comm_size failed", mpi_code);
config_ptr = H5P_peek_driver_info(plist_ptr);
if (!config_ptr || (H5P_FILE_ACCESS_DEFAULT == fapl_id)) {
if (H5FD__ioc_get_default_config(&default_config) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get default IOC VFD configuration");
config_ptr = &default_config;
}
/* Fill in the file config values */
HDmemcpy(&file_ptr->fa, config_ptr, sizeof(H5FD_ioc_config_t));
/* Fully resolve the given filepath and get its dirname */
if (H5_resolve_pathname(name, file_ptr->comm, &file_ptr->file_path) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTGET, NULL, "can't resolve filepath");
if (H5_dirname(file_ptr->file_path, &file_ptr->file_dir) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTGET, NULL, "can't get filepath dirname");
/* Translate the HDF5 file open flags into standard POSIX open flags */
ioc_flags = (H5F_ACC_RDWR & flags) ? O_RDWR : O_RDONLY;
if (H5F_ACC_TRUNC & flags)
ioc_flags |= O_TRUNC;
if (H5F_ACC_CREAT & flags)
ioc_flags |= O_CREAT;
if (H5F_ACC_EXCL & flags)
ioc_flags |= O_EXCL;
if (NULL == (plist_ptr = (H5P_genplist_t *)H5I_object(fapl_id)))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a file access property list");
/* Retrieve the subfiling configuration for the current file */
if (H5_subfiling_get_config_prop(plist_ptr, &file_ptr->subf_config) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get subfiling configuration from FAPL");
if (H5_subfiling_validate_config(&file_ptr->subf_config) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_BADVALUE, NULL, "invalid subfiling configuration");
/* Retrieve the HDF5 stub file ID for the current file */
if (H5_subfiling_get_file_id_prop(plist_ptr, &file_ptr->file_id) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get stub file ID from FAPL");
/*
* Open the subfiles for this HDF5 file. A subfiling
* context ID will be returned, which is used for
* further interactions with this file's subfiles.
*/
if (H5_open_subfiles(file_ptr->file_path, file_ptr->file_id, &file_ptr->subf_config, ioc_flags,
file_ptr->comm, &file_ptr->context_id) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to open subfiles for file '%s'",
name);
/* Initialize I/O concentrator threads if this MPI rank is an I/O concentrator */
sf_context = H5_get_subfiling_object(file_ptr->context_id);
if (sf_context && sf_context->topology->rank_is_ioc) {
if (initialize_ioc_threads(sf_context) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL,
"unable to initialize I/O concentrator threads");
}
ret_value = (H5FD_t *)file_ptr;
done:
/*
* Check if any ranks failed before exit. The objective
* here is twofold:
*
* - prevent possible hangs caused by ranks sending
* messages to I/O concentrators that failed and
* didn't spin up
* - use the barrier semantics of MPI_Allreduce to
* ensure that the I/O concentrators are fully up
* and running before proceeding.
*/
if (mpi_inited) {
MPI_Comm reduce_comm = MPI_COMM_WORLD;
int mpi_size = -1;
int err_result = (ret_value == NULL);
if (file_ptr && (file_ptr->comm != MPI_COMM_NULL))
reduce_comm = file_ptr->comm;
if (MPI_SUCCESS != (mpi_code = MPI_Comm_size(reduce_comm, &mpi_size)))
H5_SUBFILING_MPI_DONE_ERROR(NULL, "MPI_Comm_size failed", mpi_code);
if (mpi_size > 1) {
if (MPI_SUCCESS !=
(mpi_code = MPI_Allreduce(MPI_IN_PLACE, &err_result, 1, MPI_INT, MPI_MAX, reduce_comm)))
H5_SUBFILING_MPI_DONE_ERROR(NULL, "MPI_Allreduce failed", mpi_code);
}
if (err_result)
H5_SUBFILING_DONE_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL,
"one or more MPI ranks were unable to open file '%s'", name);
}
if (NULL == ret_value) {
if (file_ptr) {
if (H5FD__ioc_close_int(file_ptr) < 0)
H5_SUBFILING_DONE_ERROR(H5E_FILE, H5E_CLOSEERROR, NULL, "can't close IOC file");
}
} /* end if error */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_open() */
static herr_t
H5FD__ioc_close_int(H5FD_ioc_t *file_ptr)
{
int mpi_finalized;
int mpi_code;
herr_t ret_value = SUCCEED;
HDassert(file_ptr);
if (MPI_SUCCESS != (mpi_code = MPI_Finalized(&mpi_finalized)))
H5_SUBFILING_MPI_GOTO_ERROR(FAIL, "MPI_Finalized failed", mpi_code);
if (file_ptr->context_id >= 0) {
subfiling_context_t *sf_context = H5_get_subfiling_object(file_ptr->context_id);
/* Don't allow IOC threads to be finalized until everyone gets here */
if (!mpi_finalized && (file_ptr->mpi_size > 1))
if (MPI_SUCCESS != (mpi_code = MPI_Barrier(file_ptr->comm)))
H5_SUBFILING_MPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_code);
if (sf_context && sf_context->topology->rank_is_ioc) {
if (finalize_ioc_threads(sf_context) < 0)
/* Note that closing of subfiles is collective */
H5_SUBFILING_DONE_ERROR(H5E_VFL, H5E_CANTCLOSEFILE, FAIL, "unable to finalize IOC threads");
}
if (H5_close_subfiles(file_ptr->context_id, file_ptr->comm) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTCLOSEFILE, FAIL, "unable to close subfiling file(s)");
file_ptr->context_id = -1;
}
if (!mpi_finalized) {
if (H5_mpi_comm_free(&file_ptr->comm) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTFREE, FAIL, "unable to free MPI Communicator");
if (H5_mpi_info_free(&file_ptr->info) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_VFL, H5E_CANTFREE, FAIL, "unable to free MPI Info object");
}
done:
HDfree(file_ptr->file_path);
file_ptr->file_path = NULL;
H5MM_free(file_ptr->file_dir);
file_ptr->file_dir = NULL;
/* Release the file info */
file_ptr = H5FL_FREE(H5FD_ioc_t, file_ptr);
H5_SUBFILING_FUNC_LEAVE;
}
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_close
*
* Purpose: Closes files
*
* Return: Success: SUCCEED
* Failure: FAIL, file not closed.
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_close(H5FD_t *_file)
{
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
if (H5FD__ioc_close_int(file) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close IOC file");
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_close() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_cmp
*
* Purpose: Compare the keys of two files.
*
* Return: Success: A value like strcmp()
* Failure: Must never fail
*-------------------------------------------------------------------------
*/
static int
H5FD__ioc_cmp(const H5FD_t *_f1, const H5FD_t *_f2)
{
const H5FD_ioc_t *f1 = (const H5FD_ioc_t *)_f1;
const H5FD_ioc_t *f2 = (const H5FD_ioc_t *)_f2;
herr_t ret_value = 0; /* Return value */
H5FD_IOC_LOG_CALL(__func__);
HDassert(f1);
HDassert(f2);
ret_value = (f1->file_id > f2->file_id) - (f1->file_id < f2->file_id);
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_cmp */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_query
*
* Purpose: Set the flags that this VFL driver is capable of supporting.
* (listed in H5FDpublic.h)
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_query(const H5FD_t H5_ATTR_UNUSED *_file, unsigned long *flags /* out */)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* 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_AGGREGATE_SMALLDATA; /* OK to aggregate "small" raw data allocations */
*flags |= H5FD_FEAT_HAS_MPI; /* This driver uses MPI */
}
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_query() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_get_type_map
*
* Purpose: Retrieve the memory type mapping for this file
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_get_type_map(const H5FD_t H5_ATTR_UNUSED *_file, H5FD_mem_t H5_ATTR_UNUSED *type_map)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_get_type_map() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_alloc
*
* Purpose: Allocate file memory.
*
* Return: Address of allocated space (HADDR_UNDEF if error).
*-------------------------------------------------------------------------
*/
static haddr_t
H5FD__ioc_alloc(H5FD_t H5_ATTR_UNUSED *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUSED dxpl_id,
hsize_t H5_ATTR_UNUSED size)
{
haddr_t ret_value = HADDR_UNDEF; /* Return value */
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_alloc() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_free
*
* Purpose: Free the resources for the ioc VFD.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_free(H5FD_t H5_ATTR_UNUSED *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUSED dxpl_id,
haddr_t H5_ATTR_UNUSED addr, hsize_t H5_ATTR_UNUSED size)
{
herr_t ret_value = SUCCEED; /* Return value */
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_free() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_get_eoa
*
* Purpose: Returns 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
*-------------------------------------------------------------------------
*/
static haddr_t
H5FD__ioc_get_eoa(const H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type)
{
const H5FD_ioc_t *file = (const H5FD_ioc_t *)_file;
haddr_t ret_value = HADDR_UNDEF;
H5FD_IOC_LOG_CALL(__func__);
/* Sanity check */
HDassert(file);
ret_value = file->eoa;
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_get_eoa */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_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: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_set_eoa(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, haddr_t addr)
{
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
H5FD_IOC_LOG_CALL(__func__);
/* Sanity check */
HDassert(file);
file->eoa = addr;
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_set_eoa() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_get_eof
*
* Purpose: Returns 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
*-------------------------------------------------------------------------
*/
static haddr_t
H5FD__ioc_get_eof(const H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type)
{
const H5FD_ioc_t *file = (const H5FD_ioc_t *)_file;
haddr_t ret_value = HADDR_UNDEF; /* Return value */
subfiling_context_t *sf_context = NULL;
H5FD_IOC_LOG_CALL(__func__);
/* Sanity check */
HDassert(file);
sf_context = H5_get_subfiling_object(file->context_id);
if (sf_context) {
ret_value = sf_context->sf_eof;
goto done;
}
else
ret_value = file->eof;
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_get_eof */
/*--------------------------------------------------------------------------
* Function: H5FD__ioc_get_handle
*
* Purpose: Returns a pointer to the file handle of low-level virtual
* file driver.
*
* Return: SUCCEED/FAIL
*--------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_get_handle(H5FD_t H5_ATTR_UNUSED *_file, hid_t H5_ATTR_UNUSED fapl,
void H5_ATTR_UNUSED **file_handle)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_get_handle */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_read
*
* Purpose: Reads SIZE bytes of data from the R/W channel, beginning at
* address ADDR into buffer BUF according to data transfer
* properties in DXPL_ID.
*
* Return: Success: SUCCEED
* The read result is written into the BUF buffer
* which should be allocated by the caller.
* Failure: FAIL
* The contents of BUF are undefined.
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUSED dxpl_id, haddr_t addr,
size_t size, void *buf)
{
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
HDassert(file && file->pub.cls);
HDassert(buf);
/* Check for overflow conditions */
if (!H5_addr_defined(addr))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "addr undefined, addr = %" PRIuHADDR, addr);
if (REGION_OVERFLOW(addr, size))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow, addr = %" PRIuHADDR, addr);
ret_value = H5FD__ioc_read_vector_internal(_file, 1, &addr, &size, &buf);
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_read() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_write
*
* Purpose: Writes SIZE bytes of data to IOC file, beginning at address
* ADDR from buffer BUF according to data transfer properties
* in DXPL_ID.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_write(H5FD_t *_file, H5FD_mem_t type, hid_t H5_ATTR_UNUSED dxpl_id, haddr_t addr, size_t size,
const void *buf)
{
herr_t ret_value = SUCCEED;
addr += _file->base_addr;
ret_value = H5FD__ioc_write_vector_internal(_file, 1, &type, &addr, &size, &buf);
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_write() */
static herr_t
H5FD__ioc_read_vector(H5FD_t *_file, hid_t dxpl_id, uint32_t count, H5FD_mem_t types[], haddr_t addrs[],
size_t sizes[], void *bufs[] /* out */)
{
H5FD_ioc_t *file_ptr = (H5FD_ioc_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
/* Check arguments */
if (!file_ptr)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file pointer cannot be NULL");
if ((!types) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"types parameter can't be NULL if count is positive");
if ((!addrs) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"addrs parameter can't be NULL if count is positive");
if ((!sizes) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"sizes parameter can't be NULL if count is positive");
if ((!bufs) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"bufs parameter can't be NULL if count is positive");
/* Get the default dataset transfer property list if the user didn't provide
* one */
if (H5P_DEFAULT == dxpl_id) {
dxpl_id = H5P_DATASET_XFER_DEFAULT;
}
else {
if (TRUE != H5P_isa_class(dxpl_id, H5P_DATASET_XFER))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data transfer property list");
}
ret_value = H5FD__ioc_read_vector_internal(_file, count, addrs, sizes, bufs);
done:
H5_SUBFILING_FUNC_LEAVE;
}
static herr_t
H5FD__ioc_write_vector(H5FD_t *_file, hid_t dxpl_id, uint32_t count, H5FD_mem_t types[], haddr_t addrs[],
size_t sizes[], const void *bufs[] /* in */)
{
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
/* Check arguments */
if (!file)
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file pointer cannot be NULL");
if ((!types) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"types parameter can't be NULL if count is positive");
if ((!addrs) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"addrs parameter can't be NULL if count is positive");
if ((!sizes) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"sizes parameter can't be NULL if count is positive");
if ((!bufs) && (count > 0))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL,
"bufs parameter can't be NULL if count is positive");
/* Get the default dataset transfer property list if the user didn't provide
* one */
if (H5P_DEFAULT == dxpl_id) {
dxpl_id = H5P_DATASET_XFER_DEFAULT;
}
else {
if (TRUE != H5P_isa_class(dxpl_id, H5P_DATASET_XFER))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data transfer property list");
}
ret_value = H5FD__ioc_write_vector_internal(_file, count, types, addrs, sizes, bufs);
done:
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FDioc__write_vector() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_flush
*
* Purpose: Flushes all data to disk for underlying VFD.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_flush(H5FD_t H5_ATTR_UNUSED *_file, hid_t H5_ATTR_UNUSED dxpl_id, hbool_t H5_ATTR_UNUSED closing)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_flush() */
/*-------------------------------------------------------------------------
* Function: H5FD__ioc_truncate
*
* Purpose: Notify driver to truncate the file back to the allocated size.
*
* Return: SUCCEED/FAIL
*-------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_truncate(H5FD_t *_file, hid_t H5_ATTR_UNUSED dxpl_id, hbool_t H5_ATTR_UNUSED closing)
{
H5FD_ioc_t *file = (H5FD_ioc_t *)_file;
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
HDassert(file);
/* TODO: placeholder for now since Subfiling does the truncation */
if (!H5_addr_eq(file->eoa, file->last_eoa)) {
file->last_eoa = file->eoa;
}
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_truncate */
/*--------------------------------------------------------------------------
* Function: H5FD__ioc_lock
*
* Purpose: Sets a file lock.
*
* Return: SUCCEED/FAIL
*--------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_lock(H5FD_t H5_ATTR_UNUSED *_file, hbool_t H5_ATTR_UNUSED rw)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_lock */
/*--------------------------------------------------------------------------
* Function: H5FD__ioc_unlock
*
* Purpose: Removes a file lock.
*
* Return: SUCCEED/FAIL
*--------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_unlock(H5FD_t H5_ATTR_UNUSED *_file)
{
herr_t ret_value = SUCCEED;
H5FD_IOC_LOG_CALL(__func__);
/* TODO: placeholder for now */
H5_SUBFILING_FUNC_LEAVE;
} /* end H5FD__ioc_unlock */
static herr_t
H5FD__ioc_del(const char *name, hid_t fapl)
{
H5P_genplist_t *plist;
h5_stat_t st;
MPI_Comm comm = MPI_COMM_NULL;
MPI_Info info = MPI_INFO_NULL;
FILE *config_file = NULL;
char *tmp_filename = NULL;
char *base_filename = NULL;
char *file_dirname = NULL;
int mpi_rank = INT_MAX;
int mpi_code;
herr_t ret_value = SUCCEED;
/* TODO: Eventually this routine should share common code
* with H5_subfiling_common's routines so it doesn't get
* out of sync
*/
if (NULL == (plist = H5P_object_verify(fapl, H5P_FILE_ACCESS)))
H5_SUBFILING_GOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list");
HDassert(H5FD_IOC == H5P_peek_driver(plist));
if (H5FD_mpi_self_initialized) {
comm = MPI_COMM_WORLD;
}
else {
/* Get the MPI communicator and info from the fapl */
if (H5P_get(plist, H5F_ACS_MPI_PARAMS_INFO_NAME, &info) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get MPI info object");
if (H5P_get(plist, H5F_ACS_MPI_PARAMS_COMM_NAME, &comm) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get MPI communicator");
}
/* Get the MPI rank of this process */
if (MPI_SUCCESS != (mpi_code = MPI_Comm_rank(comm, &mpi_rank)))
H5_SUBFILING_MPI_GOTO_ERROR(FAIL, "MPI_Comm_rank failed", mpi_code);
if (mpi_rank == 0) {
int64_t read_n_subfiles = 0;
int32_t n_subfiles = 0;
char *prefix_env = NULL;
int num_digits = 0;
if (HDstat(name, &st) < 0)
H5_SUBFILING_SYS_GOTO_ERROR(H5E_FILE, H5E_SYSERRSTR, FAIL, "HDstat failed");
if (H5_basename(name, &base_filename) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't get file basename");
if (H5_dirname(name, &file_dirname) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't get file dirname");
/* Try to open the subfiling configuration file and get the number of IOCs */
if (NULL == (tmp_filename = HDmalloc(PATH_MAX)))
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL,
"can't allocate config file name buffer");
/* Check if a prefix has been set for the configuration file name */
prefix_env = HDgetenv(H5FD_SUBFILING_CONFIG_FILE_PREFIX);
/* TODO: No support for subfile directory prefix currently */
/* TODO: Possibly try loading config file prefix from file before deleting */
HDsnprintf(tmp_filename, PATH_MAX, "%s/" H5FD_SUBFILING_CONFIG_FILENAME_TEMPLATE,
prefix_env ? prefix_env : file_dirname, base_filename, (uint64_t)st.st_ino);
if (NULL == (config_file = HDfopen(tmp_filename, "r"))) {
if (ENOENT == errno) {
#ifdef H5FD_IOC_DEBUG
HDprintf("** WARNING: couldn't delete Subfiling configuration file '%s'\n", tmp_filename);
#endif
H5_SUBFILING_GOTO_DONE(SUCCEED);
}
else
H5_SUBFILING_SYS_GOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, FAIL,
"can't open subfiling config file");
}
if (H5_get_subfiling_config_from_file(config_file, NULL, &read_n_subfiles) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_FILE, H5E_READERROR, FAIL, "can't read subfiling config file");
H5_CHECK_OVERFLOW(read_n_subfiles, int64_t, int32_t);
n_subfiles = (int32_t)read_n_subfiles;
/* Delete the Subfiling configuration file */
if (EOF == HDfclose(config_file)) {
config_file = NULL;
H5_SUBFILING_SYS_GOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL,
"can't close subfiling config file");
}
config_file = NULL;
if (HDremove(tmp_filename) < 0)
H5_SUBFILING_SYS_GOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL,
"can't delete subfiling config file");
/* Try to delete each of the subfiles */
num_digits = (int)(HDlog10(n_subfiles) + 1);
for (int i = 0; i < n_subfiles; i++) {
/* TODO: No support for subfile directory prefix currently */
HDsnprintf(tmp_filename, PATH_MAX, "%s/" H5FD_SUBFILING_FILENAME_TEMPLATE, file_dirname,
base_filename, (uint64_t)st.st_ino, num_digits, i + 1, n_subfiles);
if (HDremove(tmp_filename) < 0) {
#ifdef H5FD_IOC_DEBUG
HDprintf("** WARNING: couldn't delete subfile '%s'\n", tmp_filename);
#endif
if (ENOENT != errno)
H5_SUBFILING_SYS_GOTO_ERROR(H5E_FILE, H5E_CANTDELETEFILE, FAIL, "can't delete subfile");
}
}
/* Delete the HDF5 stub file */
if (HDremove(name) < 0)
H5_SUBFILING_SYS_GOTO_ERROR(H5E_FILE, H5E_CANTDELETEFILE, FAIL, "can't delete HDF5 file");
}
done:
if (config_file)
if (EOF == HDfclose(config_file))
H5_SUBFILING_DONE_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close subfiling config file");
/* Set up a barrier (don't want processes to run ahead of the delete) */
if (comm != MPI_COMM_NULL) {
int comm_size = -1;
if (MPI_SUCCESS != (mpi_code = MPI_Comm_size(comm, &comm_size)))
H5_SUBFILING_MPI_DONE_ERROR(FAIL, "MPI_Comm_size failed", mpi_code);
if (comm_size > 1)
if (MPI_SUCCESS != (mpi_code = MPI_Barrier(comm)))
H5_SUBFILING_MPI_DONE_ERROR(FAIL, "MPI_Barrier failed", mpi_code);
}
/* Free duplicated MPI Communicator and Info objects */
if (H5_mpi_comm_free(&comm) < 0)
H5_SUBFILING_DONE_ERROR(H5E_VFL, H5E_CANTFREE, FAIL, "unable to free MPI communicator");
if (H5_mpi_info_free(&info) < 0)
H5_SUBFILING_DONE_ERROR(H5E_VFL, H5E_CANTFREE, FAIL, "unable to free MPI info object");
HDfree(tmp_filename);
H5MM_free(file_dirname);
H5MM_free(base_filename);
H5_SUBFILING_FUNC_LEAVE;
}
/*--------------------------------------------------------------------------
* Function: H5FD__ioc_write_vector_internal
*
* Purpose: This function takes 'count' vector entries
* and initiates an asynch write operation for each.
* By asynchronous, we mean that MPI_Isends are utilized
* to communicate the write operations to the 'count'
* IO Concentrators. The calling function will have
* decomposed the actual user IO request into the
* component segments, each IO having a maximum size
* of "stripe_depth", which is recorded in the
* subfiling_context_t 'sf_context' structure.
*
* Return: SUCCEED if no errors, FAIL otherwise.
*--------------------------------------------------------------------------
*/
static herr_t
H5FD__ioc_write_vector_internal(H5FD_t *_file, uint32_t count, H5FD_mem_t H5_ATTR_UNUSED types[],
haddr_t addrs[], size_t sizes[], const void *bufs[] /* in */)
{
subfiling_context_t *sf_context = NULL;
MPI_Request *mpi_reqs = NULL;
H5FD_ioc_t *file_ptr = (H5FD_ioc_t *)_file;
io_req_t **sf_io_reqs = NULL;
int64_t sf_context_id = -1;
herr_t ret_value = SUCCEED;
HDassert(_file);
HDassert(addrs);
HDassert(sizes);
HDassert(bufs);
if (count == 0)
H5_SUBFILING_GOTO_DONE(SUCCEED);
sf_context_id = file_ptr->context_id;
if (NULL == (sf_context = H5_get_subfiling_object(sf_context_id)))
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_CANTGET, FAIL, "can't get subfiling context from ID");
HDassert(sf_context->topology);
/*
* Allocate an array of I/O requests and an array twice that size for
* MPI_Request objects. Each write I/O request has an MPI_Request
* object for the I/O data transfer and an MPI_Request object that,
* when waited on until completion, signifies that the actual I/O
* call (currently, HDpwrite) has completed. This is needed for ensuring
* that blocking write calls do not return early before the data is
* actually written.
*/
if (NULL == (sf_io_reqs = HDcalloc((size_t)count, sizeof(*sf_io_reqs))))
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate I/O request array");
if (NULL == (mpi_reqs = HDmalloc(2 * (size_t)count * sizeof(*mpi_reqs))))
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate MPI request array");
/* Each pass thru the following should queue an MPI write
* to a new IOC. Both the IOC selection and offset within the
* particular subfile are based on the combination of striping
* factors and the virtual file offset (addrs[i]).
*/
for (size_t i = 0; i < (size_t)count; i++) {
herr_t write_status;
if (sizes[i] == 0)
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "invalid size argument of 0");
H5_CHECK_OVERFLOW(addrs[i], haddr_t, int64_t);
H5_CHECK_OVERFLOW(sizes[i], size_t, int64_t);
write_status = ioc__write_independent_async(sf_context_id, (int64_t)addrs[i], (int64_t)sizes[i],
bufs[i], &sf_io_reqs[i]);
if (write_status < 0)
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "couldn't queue write operation");
mpi_reqs[(2 * i)] = sf_io_reqs[i]->io_transfer_req;
mpi_reqs[(2 * i) + 1] = sf_io_reqs[i]->io_comp_req;
}
/* Here, we should have queued 'count' async requests.
* We can can now try to complete those before returning
* to the caller for the next set of IO operations.
*/
if (ioc__async_completion(mpi_reqs, 2 * (size_t)count) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "can't complete I/O requests");
done:
HDfree(mpi_reqs);
if (sf_io_reqs) {
for (size_t i = 0; i < count; i++)
HDfree(sf_io_reqs[i]);
HDfree(sf_io_reqs);
}
H5_SUBFILING_FUNC_LEAVE;
}
static herr_t
H5FD__ioc_read_vector_internal(H5FD_t *_file, uint32_t count, haddr_t addrs[], size_t sizes[],
void *bufs[] /* out */)
{
subfiling_context_t *sf_context = NULL;
MPI_Request *mpi_reqs = NULL;
H5FD_ioc_t *file_ptr = (H5FD_ioc_t *)_file;
io_req_t **sf_io_reqs = NULL;
int64_t sf_context_id = -1;
herr_t ret_value = SUCCEED;
HDassert(_file);
HDassert(addrs);
HDassert(sizes);
HDassert(bufs);
if (count == 0)
H5_SUBFILING_GOTO_DONE(SUCCEED);
sf_context_id = file_ptr->context_id;
if (NULL == (sf_context = H5_get_subfiling_object(sf_context_id)))
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_CANTGET, FAIL, "can't get subfiling context from ID");
HDassert(sf_context->topology);
/*
* Allocate an array of I/O requests and an array for MPI_Request
* objects. Each read I/O request has an MPI_Request object for the
* I/O data transfer that, when waited on until completion, signifies
* that the actual I/O call (currently, HDpread) has completed and
* the data read from the file has been transferred to the caller.
*/
if (NULL == (sf_io_reqs = HDcalloc((size_t)count, sizeof(*sf_io_reqs))))
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate I/O request array");
if (NULL == (mpi_reqs = HDmalloc((size_t)count * sizeof(*mpi_reqs))))
H5_SUBFILING_GOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate MPI request array");
for (size_t i = 0; i < (size_t)count; i++) {
int read_status;
H5_CHECK_OVERFLOW(addrs[i], haddr_t, int64_t);
H5_CHECK_OVERFLOW(sizes[i], size_t, int64_t);
read_status = ioc__read_independent_async(sf_context_id, (int64_t)addrs[i], (int64_t)sizes[i],
bufs[i], &sf_io_reqs[i]);
if (read_status < 0)
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "couldn't queue read operation");
mpi_reqs[i] = sf_io_reqs[i]->io_transfer_req;
}
/* Here, we should have queued 'count' async requests
* (one to each required IOC).
*
* We can can now try to complete those before returning
* to the caller for the next set of IO operations.
*/
if (ioc__async_completion(mpi_reqs, (size_t)count) < 0)
H5_SUBFILING_GOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "can't complete I/O requests");
done:
HDfree(mpi_reqs);
if (sf_io_reqs) {
for (size_t i = 0; i < count; i++)
HDfree(sf_io_reqs[i]);
HDfree(sf_io_reqs);
}
H5_SUBFILING_FUNC_LEAVE;
}
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