84b2099fe8
Also, update some properties (source files should not be executeable...), and remove a couple unneeded inclusions of orte_proc_table.h This commit was SVN r17655.
162 строки
4.6 KiB
C
162 строки
4.6 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; -*- */
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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) 2004-2007 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) 2007 Cisco Systems, Inc. All rights 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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*/
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/** @file
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*
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* A bitmap implementation. The bits start off with 0, so this bitmap
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* has bits numbered as bit 0, bit 1, bit 2 and so on. This bitmap
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* has auto-expansion capabilities, that is once the size is set
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* during init, it can be automatically expanded by setting the bit
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* beyond the current size. But note, this is allowed just when the
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* bit is set -- so the valid functions are set_bit and
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* find_and_set_bit. Other functions like clear, if passed a bit
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* outside the initialized range will result in an error.
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*
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* Since these bitmaps are only used to track fortran handles (which
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* MPI defines to be int's), it is assumed that we can never have more
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* than OMPI_FORTRAN_HANDLE_MAX (which is min(INT_MAX, fortran
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* INTEGER max)).
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*
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*/
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#ifndef OMPI_BITMAP_H
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#define OMPI_BITMAP_H
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#include "ompi_config.h"
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#include <string.h>
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#include "ompi/types.h"
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#include "opal/class/opal_object.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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struct ompi_bitmap_t {
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opal_object_t super; /**< Subclass of opal_object_t */
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unsigned char *bitmap; /**< The actual bitmap array of characters */
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int array_size; /**< The actual array size that maintains the bitmap */
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};
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typedef struct ompi_bitmap_t ompi_bitmap_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(ompi_bitmap_t);
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/**
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* Initializes the bitmap and sets its size. This must be called
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* before the bitmap can be actually used
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*
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* @param bitmap The input bitmap (IN)
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* @param size The initial size of the bitmap in terms of bits (IN)
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* @return OMPI error code or success
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*
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*/
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OMPI_DECLSPEC int ompi_bitmap_init (ompi_bitmap_t *bm, int size);
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/**
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* Set a bit of the bitmap. If the bit asked for is beyond the current
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* size of the bitmap, then the bitmap is extended to accomodate the
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* bit
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*
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* @param bitmap The input bitmap (IN)
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* @param bit The bit which is to be set (IN)
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* @return OMPI error code or success
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*
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*/
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OMPI_DECLSPEC int ompi_bitmap_set_bit(ompi_bitmap_t *bm, int bit);
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/**
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* Clear/unset a bit of the bitmap. If the bit is beyond the current
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* size of the bitmap, an error is returned
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*
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* @param bitmap The input bitmap (IN)
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* @param bit The bit which is to be cleared (IN)
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* @return OMPI error code if the bit is out of range, else success
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*
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*/
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OMPI_DECLSPEC int ompi_bitmap_clear_bit(ompi_bitmap_t *bm, int bit);
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/**
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* Find out if a bit is set in the bitmap
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*
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* @param bitmap The input bitmap (IN)
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* @param bit The bit which is to be checked (IN)
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* @return OMPI error code if the bit is out of range
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* 1 if the bit is set
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* 0 if the bit is not set
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*
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*/
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OMPI_DECLSPEC int ompi_bitmap_is_set_bit(ompi_bitmap_t *bm, int bit);
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/**
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* Find the first clear bit in the bitmap and set it
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*
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* @param bitmap The input bitmap (IN)
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* @param position Position of the first clear bit (OUT)
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* @return err OMPI_SUCCESS on success
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*/
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OMPI_DECLSPEC int ompi_bitmap_find_and_set_first_unset_bit(ompi_bitmap_t *bm,
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int *position);
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/**
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* Clear all bits in the bitmap
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*
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* @param bitmap The input bitmap (IN)
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* @return OMPI error code if bm is NULL
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*
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*/
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OMPI_DECLSPEC int ompi_bitmap_clear_all_bits(ompi_bitmap_t *bm);
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/**
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* Set all bits in the bitmap
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* @param bitmap The input bitmap (IN)
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* @return OMPI error code if bm is NULL
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*
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*/
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OMPI_DECLSPEC int ompi_bitmap_set_all_bits(ompi_bitmap_t *bm);
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/**
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* Gives the current size (number of bits) in the bitmap. This is the
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* legal (accessible) number of bits
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*
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* @param bitmap The input bitmap (IN)
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* @return OMPI error code if bm is NULL
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*
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*/
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static inline int ompi_bitmap_size(ompi_bitmap_t *bm)
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{
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return (NULL == bm) ? 0 : (bm->array_size * ((int) (sizeof(char) * 8)));
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}
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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