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openmpi/ompi/mca/io/base/io_base_delete.c

379 строки
12 KiB
C
Исходник Обычный вид История

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2008 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
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*
* Additional copyrights may follow
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*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "mpi.h"
#include "opal/class/opal_list.h"
#include "opal/util/argv.h"
#include "opal/util/output.h"
#include "ompi/mca/mca.h"
#include "opal/mca/base/base.h"
#include "ompi/mca/io/io.h"
#include "ompi/mca/io/base/base.h"
/*
* Local types
*/
struct avail_io_t {
opal_list_item_t super;
mca_io_base_version_t ai_version;
int ai_priority;
mca_io_base_components_t ai_component;
struct mca_io_base_delete_t *ai_private_data;
};
typedef struct avail_io_t avail_io_t;
/*
* Local functions
*/
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static opal_list_t *check_components(opal_list_t *components,
const char *filename, struct ompi_info_t *info,
char **names, int num_names);
static avail_io_t *check_one_component(const mca_base_component_t *component,
const char *filename, struct ompi_info_t *info);
static avail_io_t *query(const mca_base_component_t *component,
const char *filename, struct ompi_info_t *info);
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static avail_io_t *query_2_0_0(const mca_io_base_component_2_0_0_t *io_component,
const char *filename, struct ompi_info_t *info);
static void unquery(avail_io_t *avail, const char *filename, struct ompi_info_t *info);
static int delete_file(avail_io_t *avail, const char *filename, struct ompi_info_t *info);
/*
* Stuff for the OBJ interface
*/
static OBJ_CLASS_INSTANCE(avail_io_t, opal_list_item_t, NULL, NULL);
/*
*/
int mca_io_base_delete(const char *filename, struct ompi_info_t *info)
{
int err;
opal_list_t *selectable;
opal_list_item_t *item;
avail_io_t *avail, selected;
/* Announce */
opal_output_verbose(10, ompi_io_base_framework.framework_output,
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"io:base:delete: deleting file: %s",
filename);
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/* See if a set of component was requested by the MCA parameter.
Don't check for error. */
/* Compute the intersection of all of my available components with
the components from all the other processes in this file */
/* JMS CONTINUE HERE */
/* See if there were any listed in the MCA parameter; parse them
and check them all */
err = OMPI_ERROR;
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opal_output_verbose(10, ompi_io_base_framework.framework_output,
"io:base:delete: Checking all available modules");
selectable = check_components(&ompi_io_base_framework.framework_components,
filename, info, NULL, 0);
/* Upon return from the above, the modules list will contain the
list of modules that returned (priority >= 0). If we have no
io modules available, it's an error */
if (NULL == selectable) {
/* There's no modules available. Doh! */
/* show_help */
return OMPI_ERROR;
}
/* Do some kind of collective operation to find a module that
everyone has available */
#if 1
/* For the moment, just take the top module off the list */
/* MSC actually take the buttom */
item = opal_list_remove_last(selectable);
avail = (avail_io_t *) item;
selected = *avail;
OBJ_RELEASE(avail);
#else
/* JMS CONTINUE HERE */
#endif
/* Everything left in the selectable list is therefore unwanted,
and we call their unquery() method (because they all had
query() invoked, but will never have init() invoked in this
scope). */
for (item = opal_list_remove_first(selectable); item != NULL;
item = opal_list_remove_first(selectable)) {
avail = (avail_io_t *) item;
unquery(avail, filename, info);
OBJ_RELEASE(item);
}
OBJ_RELEASE(selectable);
/* Finally -- delete the file with the selected component */
if (OMPI_SUCCESS != (err = delete_file(&selected, filename, info))) {
return err;
}
/* Announce the winner */
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opal_output_verbose(10, ompi_io_base_framework.framework_output,
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"io:base:delete: Selected io component %s",
selected.ai_component.v2_0_0.io_version.mca_component_name);
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return OMPI_SUCCESS;
}
static int avail_io_compare (opal_list_item_t **itema,
opal_list_item_t **itemb)
{
const avail_io_t *availa = (const avail_io_t *) *itema;
const avail_io_t *availb = (const avail_io_t *) *itemb;
/* highest component last */
if (availa->ai_priority > availb->ai_priority) {
return 1;
} else if (availa->ai_priority < availb->ai_priority) {
return -1;
} else {
return 0;
}
}
/*
* For each module in the list, if it is in the list of names (or the
* list of names is NULL), then check and see if it wants to run, and
* do the resulting priority comparison. Make a list of components to
* be only those who returned that they want to run, and put them in
* priority order.
*/
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static opal_list_t *check_components(opal_list_t *components,
const char *filename, struct ompi_info_t *info,
char **names, int num_names)
{
int i;
const mca_base_component_t *component;
mca_base_component_list_item_t *cli;
bool want_to_check;
opal_list_t *selectable;
avail_io_t *avail;
/* Make a list of the components that query successfully */
selectable = OBJ_NEW(opal_list_t);
/* Scan through the list of components. This nested loop is
O(N^2), but we should never have too many components and/or
names, so this *hopefully* shouldn't matter... */
OPAL_LIST_FOREACH(cli, components, mca_base_component_list_item_t) {
component = cli->cli_component;
/* If we have a list of names, scan through it */
if (0 == num_names) {
want_to_check = true;
} else {
want_to_check = false;
for (i = 0; i < num_names; ++i) {
if (0 == strcmp(names[i], component->mca_component_name)) {
want_to_check = true;
}
}
}
/* If we determined that we want to check this component, then
do so */
if (want_to_check) {
avail = check_one_component(component, filename, info);
if (NULL != avail) {
/* Put this item on the list in priority order
(highest priority first). Should it go first? */
/* MSC actually put it Lowest priority first */
/* NTH sort this out later */
opal_list_append(selectable, (opal_list_item_t*)avail);
}
}
}
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/* If we didn't find any available components, return an error */
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if (0 == opal_list_get_size(selectable)) {
OBJ_RELEASE(selectable);
return NULL;
}
opal_list_sort(selectable, avail_io_compare);
/* All done */
return selectable;
}
/*
* Check a single component
*/
static avail_io_t *check_one_component(const mca_base_component_t *component,
const char *filename, struct ompi_info_t *info)
{
avail_io_t *avail;
avail = query(component, filename, info);
if (NULL != avail) {
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avail->ai_priority = (avail->ai_priority < 100) ?
avail->ai_priority : 100;
avail->ai_priority = (avail->ai_priority < 0) ?
0 : avail->ai_priority;
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opal_output_verbose(10, ompi_io_base_framework.framework_output,
"io:base:delete: component available: %s, priority: %d",
component->mca_component_name,
avail->ai_priority);
} else {
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opal_output_verbose(10, ompi_io_base_framework.framework_output,
"io:base:delete: component not available: %s",
component->mca_component_name);
}
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return avail;
}
/**************************************************************************
* Query functions
**************************************************************************/
/*
* Take any version of a io module, query it, and return the right
* module struct
*/
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static avail_io_t *query(const mca_base_component_t *component,
const char *filename, struct ompi_info_t *info)
{
const mca_io_base_component_2_0_0_t *ioc_200;
/* io v2.0.0 */
if (MCA_BASE_VERSION_MAJOR == component->mca_major_version &&
MCA_BASE_VERSION_MINOR == component->mca_minor_version &&
MCA_BASE_VERSION_RELEASE == component->mca_release_version) {
ioc_200 = (mca_io_base_component_2_0_0_t *) component;
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return query_2_0_0(ioc_200, filename, info);
}
/* Unknown io API version -- return error */
return NULL;
}
static avail_io_t *query_2_0_0(const mca_io_base_component_2_0_0_t *component,
const char *filename, struct ompi_info_t *info)
{
bool usable;
int priority, ret;
avail_io_t *avail;
struct mca_io_base_delete_t *private_data;
/* Query v2.0.0 */
avail = NULL;
private_data = NULL;
usable = false;
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ret = component->io_delete_query(filename, info, &private_data, &usable,
&priority);
if (OMPI_SUCCESS == ret && usable) {
avail = OBJ_NEW(avail_io_t);
avail->ai_version = MCA_IO_BASE_V_2_0_0;
avail->ai_priority = priority;
avail->ai_component.v2_0_0 = *component;
avail->ai_private_data = private_data;
}
return avail;
}
/**************************************************************************
* Unquery functions
**************************************************************************/
static void unquery(avail_io_t *avail, const char *filename, struct ompi_info_t *info)
{
const mca_io_base_component_2_0_0_t *ioc_200;
switch(avail->ai_version) {
case MCA_IO_BASE_V_2_0_0:
ioc_200 = &(avail->ai_component.v2_0_0);
if (NULL != ioc_200->io_delete_unquery) {
ioc_200->io_delete_unquery(filename, info, avail->ai_private_data);
}
break;
default:
break;
}
}
/**************************************************************************
* File delete functions
**************************************************************************/
/*
* Invoke the component's delete function
*/
static int delete_file(avail_io_t *avail, const char *filename, struct ompi_info_t *info)
{
const mca_io_base_component_2_0_0_t *ioc_200;
switch(avail->ai_version) {
case MCA_IO_BASE_V_2_0_0:
ioc_200 = &(avail->ai_component.v2_0_0);
return ioc_200->io_delete_select(filename, info,
avail->ai_private_data);
break;
default:
return OMPI_ERROR;
break;
}
/* No way to reach here */
}