59aa93e1b6
This commit adds a access_flags argument to the mpool registration function. This flag indicates what kind of access is being requested: local write, remote read, remote write, and remote atomic. The values of the registration access flags in the btl are tied to the new flags in the mpool. All mpools have been updated to include the new argument but only the grdma and udreg mpools have been updated to make use of the access flags. In both mpools existing registrations are checked for sufficient access before being returned. If a registration does not contain sufficient access it is marked as invalid and a new registration is generated. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
175 строки
5.1 KiB
C
175 строки
5.1 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2013 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2006 Voltaire. All rights reserved.
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* Copyright (c) 2011-2015 Los Alamos National Security, LLC. All rights
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* reserved.
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*
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* @file
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*/
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#ifndef MCA_MPOOL_UDREG_H
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#define MCA_MPOOL_UDREG_H
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#include "opal_config.h"
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#include "opal/class/opal_list.h"
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#include "opal/class/opal_free_list.h"
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#include "opal/mca/event/event.h"
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#include "opal/mca/mpool/mpool.h"
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#include "opal/util/proc.h"
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#if HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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BEGIN_C_DECLS
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struct mca_mpool_udreg_component_t {
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mca_mpool_base_component_t super;
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bool print_stats;
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int leave_pinned;
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opal_list_t huge_pages;
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bool use_huge_pages;
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};
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typedef struct mca_mpool_udreg_component_t mca_mpool_udreg_component_t;
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OPAL_DECLSPEC extern mca_mpool_udreg_component_t mca_mpool_udreg_component;
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struct mca_mpool_udreg_module_t;
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struct mca_mpool_base_resources_t {
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/* the start of this mpool should match grdma */
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char *pool_name;
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void *reg_data;
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size_t sizeof_reg;
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int (*register_mem)(void *reg_data, void *base, size_t size,
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mca_mpool_base_registration_t *reg);
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int (*deregister_mem)(void *reg_data, mca_mpool_base_registration_t *reg);
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/* udreg specific resources */
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bool use_kernel_cache;
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bool use_evict_w_unreg;
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int max_entries;
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size_t page_size;
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};
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typedef struct mca_mpool_base_resources_t mca_mpool_base_resources_t;
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struct mca_mpool_udreg_hugepage_t {
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opal_list_item_t super;
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unsigned long page_size;
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char *path;
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opal_list_t allocations;
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int cnt;
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};
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typedef struct mca_mpool_udreg_hugepage_t mca_mpool_udreg_hugepage_t;
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OBJ_CLASS_DECLARATION(mca_mpool_udreg_hugepage_t);
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struct mca_mpool_udreg_hugepage_alloc_t {
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opal_list_item_t super;
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int fd;
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char *path;
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void *ptr;
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size_t size;
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mca_mpool_udreg_hugepage_t *huge_table;
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};
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typedef struct mca_mpool_udreg_hugepage_alloc_t mca_mpool_udreg_hugepage_alloc_t;
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OBJ_CLASS_DECLARATION(mca_mpool_udreg_hugepage_pool_item_t);
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struct mca_mpool_udreg_module_t {
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mca_mpool_base_module_t super;
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struct mca_mpool_base_resources_t resources;
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opal_free_list_t reg_list;
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mca_mpool_udreg_hugepage_t *huge_page;
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opal_mutex_t lock;
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void *udreg_handle;
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/** used to communicate the access flags to the underlying registration
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* function */
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int requested_access_flags;
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};
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typedef struct mca_mpool_udreg_module_t mca_mpool_udreg_module_t;
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/*
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* Initializes the mpool module.
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*/
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int mca_mpool_udreg_module_init(mca_mpool_udreg_module_t *mpool);
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/*
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* Returns base address of shared memory mapping.
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*/
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void *mca_mpool_udreg_base(mca_mpool_base_module_t *mpool);
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/**
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* Allocate block of registered memory.
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*/
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void* mca_mpool_udreg_alloc(mca_mpool_base_module_t *mpool, size_t size,
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size_t align, uint32_t flags,
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mca_mpool_base_registration_t** registration);
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/**
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* realloc block of registered memory
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*/
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void* mca_mpool_udreg_realloc( mca_mpool_base_module_t *mpool, void* addr,
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size_t size, mca_mpool_base_registration_t** registration);
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/**
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* register block of memory
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*/
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int mca_mpool_udreg_register(mca_mpool_base_module_t* mpool, void *addr,
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size_t size, uint32_t flags, int32_t access_flags, mca_mpool_base_registration_t **reg);
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/**
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* deregister memory
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*/
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int mca_mpool_udreg_deregister(mca_mpool_base_module_t *mpool,
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mca_mpool_base_registration_t *reg);
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/**
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* free memory allocated by alloc function
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*/
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void mca_mpool_udreg_free(mca_mpool_base_module_t *mpool, void * addr,
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mca_mpool_base_registration_t *reg);
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/**
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* find registration for a given block of memory
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*/
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int mca_mpool_udreg_find(struct mca_mpool_base_module_t* mpool, void* addr,
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size_t size, mca_mpool_base_registration_t **reg);
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/**
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* finalize mpool
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*/
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void mca_mpool_udreg_finalize(struct mca_mpool_base_module_t *mpool);
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/**
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* Fault Tolerance Event Notification Function
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* @param state Checkpoint Stae
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* @return OPAL_SUCCESS or failure status
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*/
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int mca_mpool_udreg_ft_event(int state);
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/**
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* evict one unused registration from the mpool's lru.
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* @return true on success, false on failure
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*/
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bool mca_mpool_udreg_evict (struct mca_mpool_base_module_t *mpool);
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END_C_DECLS
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#endif
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