449 lines
13 KiB
C
Executable File
449 lines
13 KiB
C
Executable File
/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=8:tabstop=8:
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*/
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/******************************************************************************\
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* *
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* Copyright (c) 2003, The Regents of the University of California. *
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* Copyright (c) 2018, DataDirect Networks. *
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* See the file COPYRIGHT for a complete copyright notice and license. *
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* *
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********************************************************************************
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*
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* Implement abstract I/O interface for DDN Infinite Memory Engine (IME).
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*
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\******************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <errno.h> /* sys_errlist */
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#include <fcntl.h> /* IO operations */
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#include "ior.h"
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#include "iordef.h"
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#include "aiori.h"
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#include "utilities.h"
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#include "ime_native.h"
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#define IME_UNUSED(x) (void)(x) /* Silence compiler warnings */
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#ifndef O_BINARY /* Required on Windows */
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# define O_BINARY 0
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#endif
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/**************************** P R O T O T Y P E S *****************************/
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aiori_fd_t *IME_Create(char *, int, aiori_mod_opt_t *);
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aiori_fd_t *IME_Open(char *, int, aiori_mod_opt_t *);
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void IME_Close(aiori_fd_t *, aiori_mod_opt_t *);
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void IME_Delete(char *, aiori_mod_opt_t *);
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char *IME_GetVersion();
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void IME_Fsync(aiori_fd_t *, aiori_mod_opt_t *);
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int IME_Access(const char *, int, aiori_mod_opt_t *);
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IOR_offset_t IME_GetFileSize(aiori_mod_opt_t *, char *);
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IOR_offset_t IME_Xfer(int, aiori_fd_t *, IOR_size_t *, IOR_offset_t,
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IOR_offset_t, aiori_mod_opt_t *);
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int IME_Statfs(const char *, ior_aiori_statfs_t *,
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aiori_mod_opt_t *);
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int IME_Rmdir(const char *, aiori_mod_opt_t *);
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int IME_Mkdir(const char *, mode_t, aiori_mod_opt_t *);
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int IME_Stat(const char *, struct stat *, aiori_mod_opt_t *);
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void IME_Xferhints(aiori_xfer_hint_t *params);
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#if (IME_NATIVE_API_VERSION >= 132)
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int IME_Mknod(char *);
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void IME_Sync(aiori_mod_opt_t *param);
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#endif
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void IME_Initialize();
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void IME_Finalize();
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/****************************** O P T I O N S *********************************/
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typedef struct{
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int direct_io;
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} ime_options_t;
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option_help *IME_Options(aiori_mod_opt_t **init_backend_options,
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aiori_mod_opt_t *init_values)
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{
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ime_options_t *o = malloc(sizeof(ime_options_t));
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if (init_values != NULL)
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memcpy(o, init_values, sizeof(ime_options_t));
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else
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o->direct_io = 0;
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*init_backend_options = (aiori_mod_opt_t*)o;
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option_help h[] = {
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{0, "ime.odirect", "Direct I/O Mode", OPTION_FLAG, 'd', & o->direct_io},
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LAST_OPTION
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};
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option_help *help = malloc(sizeof(h));
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memcpy(help, h, sizeof(h));
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return help;
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}
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/************************** D E C L A R A T I O N S ***************************/
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extern int rank;
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extern int rankOffset;
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extern int verbose;
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extern MPI_Comm testComm;
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ior_aiori_t ime_aiori = {
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.name = "IME",
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.name_legacy = "IM",
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.create = IME_Create,
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.open = IME_Open,
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.xfer = IME_Xfer,
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.xfer_hints = IME_Xferhints,
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.close = IME_Close,
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.delete = IME_Delete,
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.get_version = IME_GetVersion,
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.fsync = IME_Fsync,
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.get_file_size = IME_GetFileSize,
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.access = IME_Access,
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.statfs = IME_Statfs,
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.rmdir = IME_Rmdir,
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.mkdir = IME_Mkdir,
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.stat = IME_Stat,
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.initialize = IME_Initialize,
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.finalize = IME_Finalize,
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.get_options = IME_Options,
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#if (IME_NATIVE_API_VERSION >= 132)
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.sync = IME_Sync,
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.mknod = IME_Mknod,
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#endif
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.enable_mdtest = true,
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};
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static aiori_xfer_hint_t *hints = NULL;
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static bool ime_initialized = false;
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/***************************** F U N C T I O N S ******************************/
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void IME_Xferhints(aiori_xfer_hint_t *params)
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{
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hints = params;
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}
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/*
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* Initialize IME (before MPI is started).
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*/
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void IME_Initialize()
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{
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if (ime_initialized)
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return;
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ime_native_init();
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ime_initialized = true;
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}
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/*
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* Finlize IME (after MPI is shutdown).
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*/
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void IME_Finalize()
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{
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if (!ime_initialized)
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return;
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(void)ime_native_finalize();
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ime_initialized = false;
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}
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/*
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* Try to access a file through the IME interface.
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*/
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int IME_Access(const char *path, int mode, aiori_mod_opt_t *module_options)
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{
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IME_UNUSED(module_options);
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return ime_native_access(path, mode);
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}
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/*
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* Create and open a file through the IME interface.
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*/
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aiori_fd_t *IME_Create(char *testFileName, int flags, aiori_mod_opt_t *param)
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{
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return IME_Open(testFileName, flags, param);
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}
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/*
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* Open a file through the IME interface.
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*/
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aiori_fd_t *IME_Open(char *testFileName, int flags, aiori_mod_opt_t *param)
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{
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int fd_oflag = O_BINARY;
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int *fd;
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if (hints->dryRun)
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return NULL;
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fd = (int *)malloc(sizeof(int));
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if (fd == NULL)
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ERR("Unable to malloc file descriptor");
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ime_options_t *o = (ime_options_t*) param;
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if (o->direct_io == TRUE)
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set_o_direct_flag(&fd_oflag);
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if (flags & IOR_RDONLY)
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fd_oflag |= O_RDONLY;
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if (flags & IOR_WRONLY)
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fd_oflag |= O_WRONLY;
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if (flags & IOR_RDWR)
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fd_oflag |= O_RDWR;
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if (flags & IOR_APPEND)
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fd_oflag |= O_APPEND;
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if (flags & IOR_CREAT)
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fd_oflag |= O_CREAT;
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if (flags & IOR_EXCL)
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fd_oflag |= O_EXCL;
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if (flags & IOR_TRUNC)
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fd_oflag |= O_TRUNC;
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*fd = ime_native_open(testFileName, fd_oflag, 0664);
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if (*fd < 0) {
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free(fd);
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ERR("cannot open file");
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}
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return (aiori_fd_t*) fd;
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}
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/*
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* Write or read access to file using the IM interface.
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*/
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IOR_offset_t IME_Xfer(int access, aiori_fd_t *file, IOR_size_t *buffer,
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IOR_offset_t length, IOR_offset_t offset, aiori_mod_opt_t *param)
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{
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int xferRetries = 0;
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long long remaining = (long long)length;
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char *ptr = (char *)buffer;
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int fd = *(int *)file;
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long long rc;
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if (hints->dryRun)
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return length;
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while (remaining > 0) {
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/* write/read file */
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if (access == WRITE) { /* WRITE */
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if (verbose >= VERBOSE_4) {
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fprintf(stdout, "task %d writing to offset %lld\n",
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rank, offset + length - remaining);
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}
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rc = ime_native_pwrite(fd, ptr, remaining, offset);
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if (hints->fsyncPerWrite)
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IME_Fsync(file, param);
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} else { /* READ or CHECK */
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if (verbose >= VERBOSE_4) {
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fprintf(stdout, "task %d reading from offset %lld\n",
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rank, offset + length - remaining);
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}
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rc = ime_native_pread(fd, ptr, remaining, offset);
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if (rc == 0)
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ERR("hit EOF prematurely");
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else if (rc < 0)
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ERR("read failed");
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}
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if (rc < remaining) {
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fprintf(stdout, "WARNING: Task %d, partial %s, %lld of "
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"%lld bytes at offset %lld\n",
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rank, access == WRITE ? "write" : "read", rc,
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remaining, offset + length - remaining );
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if (hints->singleXferAttempt) {
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MPI_CHECK(MPI_Abort(MPI_COMM_WORLD, -1),
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"barrier error");
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}
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if (xferRetries > MAX_RETRY) {
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ERR( "too many retries -- aborting" );
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}
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} else if (rc > remaining) /* this should never happen */
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ERR("too many bytes transferred!?!");
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assert(rc >= 0);
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assert(rc <= remaining);
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remaining -= rc;
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ptr += rc;
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xferRetries++;
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}
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return(length);
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}
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/*
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* Perform fsync().
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*/
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void IME_Fsync(aiori_fd_t *fd, aiori_mod_opt_t *param)
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{
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if (ime_native_fsync(*(int *)fd) != 0)
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WARN("cannot perform fsync on file");
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}
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/*
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* Close a file through the IME interface.
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*/
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void IME_Close(aiori_fd_t *file, aiori_mod_opt_t *param)
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{
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if (hints->dryRun)
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return;
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if (ime_native_close(*(int*)file) != 0)
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ERRF("Cannot close file descriptor: %d", *(int*)file);
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free(file);
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}
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/*
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* Delete a file through the IME interface.
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*/
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void IME_Delete(char *testFileName, aiori_mod_opt_t *param)
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{
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if (hints->dryRun)
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return;
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if (ime_native_unlink(testFileName) != 0)
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EWARNF("[RANK %03d]: cannot delete file \"%s\"\n",
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rank, testFileName);
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}
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/*
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* Determine API version.
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*/
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char *IME_GetVersion()
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{
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static char ver[1024] = {};
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#if (IME_NATIVE_API_VERSION >= 120)
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strcpy(ver, ime_native_version());
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#else
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strcpy(ver, "not supported");
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#endif
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return ver;
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}
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int IME_Statfs(const char *path, ior_aiori_statfs_t *stat_buf,
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aiori_mod_opt_t *module_options)
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{
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IME_UNUSED(module_options);
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#if (IME_NATIVE_API_VERSION >= 130)
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struct statvfs statfs_buf;
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int ret = ime_native_statvfs(path, &statfs_buf);
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if (ret)
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return ret;
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stat_buf->f_bsize = statfs_buf.f_bsize;
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stat_buf->f_blocks = statfs_buf.f_blocks;
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stat_buf->f_bfree = statfs_buf.f_bfree;
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stat_buf->f_files = statfs_buf.f_files;
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stat_buf->f_ffree = statfs_buf.f_ffree;
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return 0;
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#else
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IME_UNUSED(path);
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IME_UNUSED(stat_buf);
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WARN("statfs is currently not supported in IME backend!");
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return -1;
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#endif
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}
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int IME_Mkdir(const char *path, mode_t mode, aiori_mod_opt_t * module_options)
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{
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IME_UNUSED(module_options);
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#if (IME_NATIVE_API_VERSION >= 130)
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return ime_native_mkdir(path, mode);
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#else
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IME_UNUSED(path);
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IME_UNUSED(mode);
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WARN("mkdir not supported in IME backend!");
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return -1;
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#endif
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}
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int IME_Rmdir(const char *path, aiori_mod_opt_t *module_options)
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{
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IME_UNUSED(module_options);
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#if (IME_NATIVE_API_VERSION >= 130)
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return ime_native_rmdir(path);
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#else
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IME_UNUSED(path);
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WARN("rmdir not supported in IME backend!");
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return -1;
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#endif
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}
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/*
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* Perform stat() through the IME interface.
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*/
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int IME_Stat(const char *path, struct stat *buf,
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aiori_mod_opt_t *module_options)
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{
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IME_UNUSED(module_options);
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return ime_native_stat(path, buf);
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}
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/*
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* Use IME stat() to return aggregate file size.
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*/
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IOR_offset_t IME_GetFileSize(aiori_mod_opt_t *test, char *testFileName)
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{
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struct stat stat_buf;
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if (hints->dryRun)
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return 0;
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if (ime_native_stat(testFileName, &stat_buf) != 0)
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ERRF("cannot get status of written file %s",
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testFileName);
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return stat_buf.st_size;
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}
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#if (IME_NATIVE_API_VERSION >= 132)
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/*
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* Create a file through mknod interface.
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*/
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int IME_Mknod(char *testFileName)
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{
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int ret = ime_native_mknod(testFileName, S_IFREG | S_IRUSR, 0);
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if (ret < 0)
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ERR("mknod failed");
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return ret;
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}
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/*
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* Use IME sync to flush page cache of all opened files.
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*/
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void IME_Sync(aiori_mod_opt_t *param)
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{
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int ret = ime_native_sync(0);
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if (ret != 0)
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FAIL("Error executing the sync command.");
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}
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#endif
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