DarkWyrm
2939a1dcc8
More work on Desktop and DesktopClasses minor API tweak to DisplayDriver Added conditional compilation stuff to AppServer.cpp for debugging purposes TokenHandler now uses BLockers instead of semaphores for locking Can now run the server and see something git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2717 a95241bf-73f2-0310-859d-f6bbb57e9c96
123 lines
3.0 KiB
C++
123 lines
3.0 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: TokenHandler.cpp
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// Author: DarkWyrm <[email protected]>
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// Description: Class to provide tokens with excluded values possible.
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//
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//------------------------------------------------------------------------------
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#include "TokenHandler.h"
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//! Does setup
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TokenHandler::TokenHandler(void)
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{
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_index=-1;
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_excludes=new BList(0);
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}
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//! Undoes the setup from the constructor
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TokenHandler::~TokenHandler(void)
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{
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ResetExcludes();
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delete _excludes;
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}
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/*!
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\brief Returns a unique token
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\return A unique token
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If a value is excluded the next higher non-excluded value is returned.
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*/
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int32 TokenHandler::GetToken(void)
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{
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int32 value;
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_lock.Lock();
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_index++;
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while(IsExclude(_index))
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_index++;
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value=_index;
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_lock.Unlock();
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return value;
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}
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/*!
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\brief Excludes a value from being returned as a token.
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This is quite useful for excluding values like B_ERROR and such.
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*/
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void TokenHandler::ExcludeValue(int32 value)
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{
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_lock.Lock();
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if(!IsExclude(value))
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_excludes->AddItem(new int32(value));
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_lock.Unlock();
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}
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//! Resets the token index
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void TokenHandler::Reset(void)
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{
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_lock.Lock();
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_index=-1;
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_lock.Unlock();
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}
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//! Empties object of all assigned excluded values
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void TokenHandler::ResetExcludes(void)
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{
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_lock.Lock();
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int32 *temp;
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for(int32 i=0; i<_excludes->CountItems();i++)
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{
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temp=(int32*)_excludes->ItemAt(i);
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if(temp)
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delete temp;
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}
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_excludes->MakeEmpty();
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_lock.Unlock();
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}
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/*!
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\brief Determines whether a value is excluded
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\param value The value to be checked
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\return True if the value is excluded from being a token, false if not.
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*/
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bool TokenHandler::IsExclude(int32 value)
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{
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bool match=false;
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int32 *temp;
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_lock.Lock();
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for(int32 i=0;i<_excludes->CountItems();i++)
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{
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temp=(int32*)_excludes->ItemAt(i);
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if(temp && *temp==value)
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{
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match=true;
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break;
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}
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}
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_lock.Unlock();
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return match;
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}
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