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/*
* Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* 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) 2007-2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2011 Los Alamos National Security, LLC.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H*/
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#include <errno.h>
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_param.h"
#include "orte/util/proc_info.h"
#include "ompi/mca/allocator/base/base.h"
#include "mpool_sm.h"
#include "ompi/mca/common/sm/common_sm.h"
#include "ompi/proc/proc.h"
#if OPAL_ENABLE_FT_CR == 1
#include "opal/runtime/opal_cr.h"
#endif
/*
* Local functions
*/
static int mca_mpool_sm_open(void);
static int mca_mpool_sm_close( void );
static mca_mpool_base_module_t* mca_mpool_sm_init(
struct mca_mpool_base_resources_t* resources);
mca_mpool_sm_component_t mca_mpool_sm_component = {
{
/* First, the mca_base_component_t struct containing meta
information about the component itself */
{
MCA_MPOOL_BASE_VERSION_2_0_0,
"sm", /* MCA component name */
OMPI_MAJOR_VERSION, /* MCA component major version */
OMPI_MINOR_VERSION, /* MCA component minor version */
OMPI_RELEASE_VERSION, /* MCA component release version */
mca_mpool_sm_open, /* component open */
mca_mpool_sm_close
},
{
/* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
mca_mpool_sm_init
}
};
static char *min_size_param = NULL;
static long default_min;
/**
* component open/close/init function
*/
static int mca_mpool_sm_open(void)
{
int value = 0;
char *size_str = NULL;
default_min = 67108864;
/* register SM component parameters */
mca_base_param_reg_string(&mca_mpool_sm_component.super.mpool_version,
"allocator",
"Name of allocator component to use with sm mpool",
false, false,
"bucket",
&mca_mpool_sm_component.sm_allocator_name);
/* register values as string instead of int. A string-converted
* signed long int allows the min_size or the sm_size
* to be set up to 2GB-1 for 32 bit and much greater for 64 bit. */
asprintf(&size_str, "%ld", default_min);
mca_base_param_reg_string(&mca_mpool_sm_component.super.mpool_version,
"min_size",
"Minimum size of the sm mpool shared memory file",
false, false, size_str, &min_size_param);
free(size_str);
mca_base_param_reg_int(&mca_mpool_sm_component.super.mpool_version,
"verbose",
"Enable verbose output for mpool sm component",
false, false, 0, &value);
if (value != 0) {
mca_mpool_sm_component.verbose = opal_output_open(NULL);
} else {
mca_mpool_sm_component.verbose = -1;
}
return OMPI_SUCCESS;
}
static int mca_mpool_sm_close( void )
{
if (NULL != mca_mpool_sm_component.sm_allocator_name) {
free(mca_mpool_sm_component.sm_allocator_name);
}
if (NULL != min_size_param) {
free(min_size_param);
}
return OMPI_SUCCESS;
}
static mca_mpool_base_module_t* mca_mpool_sm_init(
struct mca_mpool_base_resources_t* resources)
{
char *file_name;
int len;
mca_mpool_sm_module_t* mpool_module;
mca_allocator_base_component_t* allocator_component;
long min_size;
ompi_proc_t **procs;
size_t num_all_procs, i, num_local_procs = 0;
/* README: this needs to change if procs in different jobs (even
spawned ones) are to talk using shared memory */
procs = ompi_proc_world(&num_all_procs);
for (i = 0 ; i < num_all_procs ; ++i) {
if (OPAL_PROC_ON_LOCAL_NODE(procs[i]->proc_flags)) {
num_local_procs++;
}
}
/* parse the min size and validate it */
/* if other parameters are added, absolutely necessary to reset errno each time */
errno = 0;
min_size = strtol(min_size_param, (char **)NULL, 10);
if (errno == ERANGE) {
opal_output(0, "mca_mpool_sm_init: min_size overflows! set to default (%ld)", default_min);
min_size = default_min;
} else if (errno == EINVAL) {
opal_output(0, "mca_mpool_sm_init: invalid min_size entered. set it to (%ld)", default_min);
min_size = default_min;
}
/* Make a new mpool module */
mpool_module =
(mca_mpool_sm_module_t*)malloc(sizeof(mca_mpool_sm_module_t));
mca_mpool_sm_module_init(mpool_module);
/* set sm_size */
mpool_module->sm_size = resources->size;
/* clip at the min size */
if (mpool_module->sm_size < min_size) {
mpool_module->sm_size = min_size;
}
/* add something for the control structure */
mpool_module->sm_size += sizeof(mca_common_sm_module_t);
allocator_component = mca_allocator_component_lookup(
mca_mpool_sm_component.sm_allocator_name);
/* if specified allocator cannot be loaded - look for an alternative */
if(NULL == allocator_component) {
if(opal_list_get_size(&mca_allocator_base_components) == 0) {
mca_base_component_list_item_t* item = (mca_base_component_list_item_t*)
opal_list_get_first(&mca_allocator_base_components);
allocator_component = (mca_allocator_base_component_t*)item->cli_component;
opal_output(0, "mca_mpool_sm_init: unable to locate allocator: %s - using %s\n",
mca_mpool_sm_component.sm_allocator_name, allocator_component->allocator_version.mca_component_name);
} else {
opal_output(0, "mca_mpool_sm_init: unable to locate allocator: %s\n",
mca_mpool_sm_component.sm_allocator_name);
free(procs);
return NULL;
}
}
mpool_module->mem_node = resources->mem_node;
/* create initial shared memory mapping */
len = asprintf( &file_name, "%s"OPAL_PATH_SEP"shared_mem_pool.%s",
orte_process_info.job_session_dir,
orte_process_info.nodename );
if ( 0 > len ) {
free(mpool_module);
free(procs);
return NULL;
}
opal_output(mca_mpool_sm_component.verbose,
"mca_mpool_sm_init: shared memory size used: (%ld)",
mpool_module->sm_size);
if (NULL == (mpool_module->sm_common_module =
mca_common_sm_init(procs, num_all_procs,
mpool_module->sm_size,
file_name,
sizeof(mca_common_sm_module_t), 8))) {
opal_output(mca_mpool_sm_component.verbose,
"mca_mpool_sm_init: unable to create shared memory mapping (%s)", file_name);
free(file_name);
free(mpool_module);
free(procs);
return NULL;
}
free(procs);
free(file_name);
/* setup allocator */
mpool_module->sm_allocator =
allocator_component->allocator_init(true,
mca_common_sm_seg_alloc,
NULL, &(mpool_module->super));
if(NULL == mpool_module->sm_allocator) {
opal_output(0, "mca_mpool_sm_init: unable to initialize allocator");
free(mpool_module);
return NULL;
}
return &mpool_module->super;
}
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