Quelle List.cpp Sprache: C

/*---------------------------------------------------------------
* Copyright (c) 1999,2000,2001,2002,2003
* The Board of Trustees of the University of Illinois
* All Rights Reserved.
*---------------------------------------------------------------
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software (Iperf) and associated
* documentation files (the "Software"), to deal in the Software
* without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and
* the following disclaimers.
*
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimers in the documentation and/or other materials
* provided with the distribution.
*
*
* Neither the names of the University of Illinois, NCSA,
* nor the names of its contributors may be used to endorse
* or promote products derived from this Software without
* specific prior written permission.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* ________________________________________________________________
* National Laboratory for Applied Network Research
* National Center for Supercomputing Applications
* University of Illinois at Urbana-Champaign
* http://www.ncsa.uiuc.edu
* ________________________________________________________________
*
* List.cpp
* by Kevin Gibbs <kgibbs@ncsa.uiuc.edu>
* -------------------------------------------------------------------
*/

#include "List.h"
#include "Mutex.h"
#include "SocketAddr.h"

/*
* Global List and Mutex variables
*/
Iperf_ListEntry *clients = NULL;
Mutex clients_mutex;

/*
* Add Entry add to the List
*/
void Iperf_pushback ( Iperf_ListEntry *add, Iperf_ListEntry **root ) {
    add->next = *root;
    *root = add;
}

/*
* Delete Entry del from the List
*/
void Iperf_delete ( iperf_sockaddr *del, Iperf_ListEntry **root ) {
    Iperf_ListEntry *temp = Iperf_present( del, *root );
    if ( temp != NULL ) {
        if ( temp == *root ) {
            *root = (*root)->next;
        } else {
            Iperf_ListEntry *itr = *root;
            while ( itr->next != NULL ) {
                if ( itr->next == temp ) {
                    itr->next = itr->next->next;
                    break;
                }
                itr = itr->next;
            }
        }
        delete temp;
    }
}

/*
* Destroy the List (cleanup function)
*/
void Iperf_destroy ( Iperf_ListEntry **root ) {
    Iperf_ListEntry *itr1 = *root, *itr2;
    while ( itr1 != NULL ) {
        itr2 = itr1->next;
        delete itr1;
        itr1 = itr2;
    }
    *root = NULL;
}

/*
* Check if the exact Entry find is present
*/
Iperf_ListEntry* Iperf_present ( iperf_sockaddr *find, Iperf_ListEntry *root ) {
    Iperf_ListEntry *itr = root;
    while ( itr != NULL ) {
        if ( SockAddr_are_Equal( (sockaddr*)itr, (sockaddr*)find ) ) {
            return itr;
        }
        itr = itr->next;
    }
    return NULL;
}

/*
* Check if a Entry find is in the List or if any
* Entry exists that has the same host as the
* Entry find
*/
Iperf_ListEntry* Iperf_hostpresent ( iperf_sockaddr *find, Iperf_ListEntry *root ) {
    Iperf_ListEntry *itr = root;
    while ( itr != NULL ) {
        if ( SockAddr_Hostare_Equal( (sockaddr*)itr, (sockaddr*)find ) ) {
            return itr;
        }
        itr = itr->next;
    }
    return NULL;
}

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