292 строки
10 KiB
C
292 строки
10 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) 2004-2009 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) 2006-2007 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2011 NVIDIA Corporation. All rights reserved.
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* Copyright (c) 2012 Los Alamos National Security, LLC. All rights
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* reserved.
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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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#include "ompi_config.h"
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#include "ompi/class/ompi_free_list.h"
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#include "opal/align.h"
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#include "opal/util/output.h"
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#include "ompi/mca/mpool/mpool.h"
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static void ompi_free_list_construct(ompi_free_list_t* fl);
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static void ompi_free_list_destruct(ompi_free_list_t* fl);
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OBJ_CLASS_INSTANCE(ompi_free_list_t, opal_atomic_lifo_t,
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ompi_free_list_construct, ompi_free_list_destruct);
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typedef struct ompi_free_list_item_t ompi_free_list_memory_t;
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OBJ_CLASS_INSTANCE(ompi_free_list_item_t,
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opal_list_item_t,
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NULL, NULL);
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static void ompi_free_list_construct(ompi_free_list_t* fl)
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{
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OBJ_CONSTRUCT(&fl->fl_lock, opal_mutex_t);
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OBJ_CONSTRUCT(&fl->fl_condition, opal_condition_t);
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fl->fl_max_to_alloc = 0;
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fl->fl_num_allocated = 0;
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fl->fl_num_per_alloc = 0;
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fl->fl_num_waiting = 0;
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fl->fl_frag_size = sizeof(ompi_free_list_item_t);
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fl->fl_frag_alignment = 0;
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fl->fl_payload_buffer_size=0;
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fl->fl_payload_buffer_alignment=0;
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fl->fl_frag_class = OBJ_CLASS(ompi_free_list_item_t);
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fl->fl_mpool = 0;
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fl->ctx = NULL;
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OBJ_CONSTRUCT(&(fl->fl_allocations), opal_list_t);
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}
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static void ompi_free_list_destruct(ompi_free_list_t* fl)
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{
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opal_list_item_t *item;
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ompi_free_list_memory_t *fl_mem;
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#if 0 && OPAL_ENABLE_DEBUG
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if(opal_list_get_size(&fl->super) != fl->fl_num_allocated) {
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opal_output(0, "ompi_free_list: %d allocated %d returned: %s:%d\n",
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fl->fl_num_allocated, opal_list_get_size(&fl->super),
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fl->super.super.cls_init_file_name, fl->super.super.cls_init_lineno);
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}
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#endif
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while(NULL != (item = opal_list_remove_first(&(fl->fl_allocations)))) {
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fl_mem = (ompi_free_list_memory_t*)item;
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if( NULL != fl->fl_mpool ) {
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fl->fl_mpool->mpool_free(fl->fl_mpool, fl_mem->ptr,
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fl_mem->registration);
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} else if (fl_mem->ptr) {
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free (fl_mem->ptr);
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}
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/* destruct the item (we constructed it), then free the memory chunk */
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OBJ_DESTRUCT(item);
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free(item);
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}
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OBJ_DESTRUCT(&fl->fl_allocations);
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OBJ_DESTRUCT(&fl->fl_condition);
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OBJ_DESTRUCT(&fl->fl_lock);
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}
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int ompi_free_list_init_ex(
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ompi_free_list_t *flist,
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size_t elem_size,
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size_t alignment,
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opal_class_t* elem_class,
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int num_elements_to_alloc,
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int max_elements_to_alloc,
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int num_elements_per_alloc,
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mca_mpool_base_module_t* mpool,
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ompi_free_list_item_init_fn_t item_init,
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void* ctx)
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{
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/* alignment must be more than zero and power of two */
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if(alignment <= 1 || (alignment & (alignment - 1)))
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return OMPI_ERROR;
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if(elem_size > flist->fl_frag_size)
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flist->fl_frag_size = elem_size;
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flist->fl_frag_alignment = alignment;
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if(elem_class)
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flist->fl_frag_class = elem_class;
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flist->fl_payload_buffer_size=flist->fl_frag_size-
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flist->fl_frag_class->cls_sizeof;
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flist->fl_payload_buffer_alignment=alignment;
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flist->fl_max_to_alloc = max_elements_to_alloc;
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flist->fl_num_allocated = 0;
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flist->fl_num_per_alloc = num_elements_per_alloc;
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flist->fl_mpool = mpool;
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flist->item_init = item_init;
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flist->ctx = ctx;
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if(num_elements_to_alloc)
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return ompi_free_list_grow(flist, num_elements_to_alloc);
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return OMPI_SUCCESS;
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}
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/* this will replace ompi_free_list_init_ex */
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int ompi_free_list_init_ex_new(
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ompi_free_list_t *flist,
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size_t frag_size,
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size_t frag_alignment,
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opal_class_t* frag_class,
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size_t payload_buffer_size,
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size_t payload_buffer_alignment,
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int num_elements_to_alloc,
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int max_elements_to_alloc,
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int num_elements_per_alloc,
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mca_mpool_base_module_t* mpool,
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ompi_free_list_item_init_fn_t item_init,
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void* ctx)
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{
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/* alignment must be more than zero and power of two */
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if (frag_alignment <= 1 || (frag_alignment & (frag_alignment - 1)))
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return OMPI_ERROR;
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if (0 < payload_buffer_size) {
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if (payload_buffer_alignment <= 1 || (payload_buffer_alignment & (payload_buffer_alignment - 1)))
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return OMPI_ERROR;
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}
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if (frag_size > flist->fl_frag_size)
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flist->fl_frag_size = frag_size;
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if (frag_class)
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flist->fl_frag_class = frag_class;
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flist->fl_payload_buffer_size=payload_buffer_size;
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flist->fl_max_to_alloc = max_elements_to_alloc;
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flist->fl_num_allocated = 0;
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flist->fl_num_per_alloc = num_elements_per_alloc;
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flist->fl_mpool = mpool;
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flist->fl_frag_alignment = frag_alignment;
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flist->fl_payload_buffer_alignment = payload_buffer_alignment;
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flist->item_init = item_init;
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flist->ctx = ctx;
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if (num_elements_to_alloc)
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return ompi_free_list_grow(flist, num_elements_to_alloc);
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return OMPI_SUCCESS;
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}
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int ompi_free_list_grow(ompi_free_list_t* flist, size_t num_elements)
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{
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unsigned char *ptr, *mpool_alloc_ptr = NULL, *payload_ptr;
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ompi_free_list_memory_t *alloc_ptr;
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size_t i, alloc_size, head_size, elem_size = 0;
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mca_mpool_base_registration_t *reg = NULL;
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if(flist->fl_max_to_alloc > 0)
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if(flist->fl_num_allocated + num_elements > flist->fl_max_to_alloc)
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num_elements = flist->fl_max_to_alloc - flist->fl_num_allocated;
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if(num_elements == 0)
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return OMPI_ERR_TEMP_OUT_OF_RESOURCE;
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head_size = (NULL == flist->fl_mpool) ? flist->fl_frag_size:
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flist->fl_frag_class->cls_sizeof;
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head_size = OPAL_ALIGN(head_size, flist->fl_frag_alignment, size_t);
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/* calculate head allocation size */
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alloc_size = num_elements * head_size + sizeof(ompi_free_list_memory_t) +
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flist->fl_frag_alignment;
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alloc_ptr = (ompi_free_list_memory_t*)malloc(alloc_size);
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if(NULL == alloc_ptr)
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return OMPI_ERR_TEMP_OUT_OF_RESOURCE;
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if (0 != flist->fl_payload_buffer_size) {
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elem_size = OPAL_ALIGN(flist->fl_payload_buffer_size,
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flist->fl_payload_buffer_alignment, size_t);
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/* elem_size should not be 0 here */
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assert (elem_size > 0);
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/* allocate the rest from the mpool (or use memalign/malloc) */
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if(flist->fl_mpool != NULL) {
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payload_ptr = mpool_alloc_ptr =
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(unsigned char *) flist->fl_mpool->mpool_alloc(flist->fl_mpool,
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num_elements * elem_size,
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flist->fl_payload_buffer_alignment,
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MCA_MPOOL_FLAGS_CACHE_BYPASS |
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MCA_MPOOL_FLAGS_CUDA_REGISTER_MEM, ®);
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} else {
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#ifdef HAVE_POSIX_MEMALIGN
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posix_memalign ((void **) &mpool_alloc_ptr, flist->fl_payload_buffer_alignment,
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num_elements * elem_size);
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payload_ptr = mpool_alloc_ptr;
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#else
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mpool_alloc_ptr = (unsigned char *) malloc (num_elements * elem_size +
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flist->fl_payload_buffer_alignment);
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payload_ptr = (unsigned char *) OPAL_ALIGN((uintptr_t)mpool_alloc_ptr,
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flist->fl_payload_buffer_alignment,
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uintptr_t);
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#endif
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}
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if(NULL == mpool_alloc_ptr) {
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free(alloc_ptr);
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return OMPI_ERR_TEMP_OUT_OF_RESOURCE;
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}
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}
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/* make the alloc_ptr a list item, save the chunk in the allocations list,
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* and have ptr point to memory right after the list item structure */
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OBJ_CONSTRUCT(alloc_ptr, ompi_free_list_item_t);
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opal_list_append(&(flist->fl_allocations), (opal_list_item_t*)alloc_ptr);
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alloc_ptr->registration = reg;
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alloc_ptr->ptr = mpool_alloc_ptr;
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ptr = (unsigned char*)alloc_ptr + sizeof(ompi_free_list_memory_t);
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ptr = OPAL_ALIGN_PTR(ptr, flist->fl_frag_alignment, unsigned char*);
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for(i=0; i<num_elements; i++) {
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ompi_free_list_item_t* item = (ompi_free_list_item_t*)ptr;
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item->registration = reg;
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item->ptr = payload_ptr;
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OBJ_CONSTRUCT_INTERNAL(item, flist->fl_frag_class);
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/* run the initialize function if present */
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if(flist->item_init) {
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flist->item_init(item, flist->ctx);
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}
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opal_atomic_lifo_push(&(flist->super), &(item->super));
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ptr += head_size;
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payload_ptr += elem_size;
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}
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flist->fl_num_allocated += num_elements;
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return OMPI_SUCCESS;
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}
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/**
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* This function resize the free_list to contain at least the specified
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* number of elements. We do not create all of them in the same memory
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* segment. Instead we will several time the fl_num_per_alloc elements
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* until we reach the required number of the maximum allowed by the
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* initialization.
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*/
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int
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ompi_free_list_resize(ompi_free_list_t* flist, size_t size)
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{
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ssize_t inc_num;
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int ret = OMPI_SUCCESS;
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if (flist->fl_num_allocated > size) {
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return OMPI_SUCCESS;
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}
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OPAL_THREAD_LOCK(&((flist)->fl_lock));
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inc_num = (ssize_t)size - (ssize_t)flist->fl_num_allocated;
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while( inc_num > 0 ) {
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ret = ompi_free_list_grow(flist, flist->fl_num_per_alloc);
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if( OMPI_SUCCESS != ret ) break;
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inc_num = (ssize_t)size - (ssize_t)flist->fl_num_allocated;
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}
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OPAL_THREAD_UNLOCK(&((flist)->fl_lock));
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return ret;
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}
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