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A new class to manage the list of loopers in a team. Provides the

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functionality of the existing static BLooper functions (which now call
through to it) in a nicer package.  New code should use the global instance
of this (BPrivate::gLooperList) instead of the old BLooper functions (which
are officially deprecated).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@244 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
ejakowatz
2002-07-15 16:04:06 +00:00
parent 296e9ce964
commit df226cd7b3
2 changed files with 374 additions and 0 deletions
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headers/private/app/LooperList.h
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//------------------------------------------------------------------------------
// Copyright (c) 2001-2002, OpenBeOS
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software 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:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// 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
// AUTHORS 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.
//
// File Name: LooperList.h
// Author(s): Erik Jaesler ([email protected])
// Description: Maintains a global list of all loopers in a given team.
//------------------------------------------------------------------------------
#ifndef LOOPERLIST_H
#define LOOPERLIST_H
// Standard Includes -----------------------------------------------------------
#include <vector>
// System Includes -------------------------------------------------------------
#include <Locker.h>
#include <OS.h>
#include <SupportDefs.h>
// Project Includes ------------------------------------------------------------
// Local Includes --------------------------------------------------------------
// Local Defines ---------------------------------------------------------------
// Globals ---------------------------------------------------------------------
class BLooper;
namespace BPrivate {
class BLooperList
{
public:
BLooperList();
bool Lock();
void Unlock();
bool IsLocked();
void AddLooper(BLooper* l);
bool IsLooperValid(const BLooper* l);
bool RemoveLooper(BLooper* l);
void GetLooperList(BList* list);
BLooper* LooperForThread(thread_id tid);
BLooper* LooperForName(const char* name);
BLooper* LooperForPort(port_id port);
private:
struct LooperData
{
LooperData();
LooperData(BLooper* loop, uint32 i);
LooperData(const LooperData& rhs);
LooperData& operator=(const LooperData& rhs);
BLooper* looper;
uint32 id;
};
static bool EmptySlotPred(LooperData& Data);
struct FindLooperPred
{
FindLooperPred(const BLooper* loop) : looper(loop) {;}
bool operator()(LooperData& Data);
const BLooper* looper;
};
struct FindThreadPred
{
FindThreadPred(thread_id tid) : thread(tid) {;}
bool operator()(LooperData& Data);
thread_id thread;
};
struct FindNamePred
{
FindNamePred(const char* n) : name(n) {;}
bool operator()(LooperData& Data);
const char* name;
};
struct FindPortPred
{
FindPortPred(port_id pid) : port(pid) {;}
bool operator()(LooperData& Data);
port_id port;
};
void AssertLocked();
BLocker fLock;
uint32 fLooperID;
std::vector<LooperData> fData;
};
extern _IMPEXP_BE BLooperList gLooperList;
}
#endif //LOOPERLIST_H
/*
* $Log $
*
* $Id $
*
*/
src/kits/app/LooperList.cpp
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//------------------------------------------------------------------------------
// Copyright (c) 2001-2002, OpenBeOS
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software 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:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// 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
// AUTHORS 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.
//
// File Name: LooperList.cpp
// Author(s): Erik Jaesler ([email protected])
// Description: Maintains a global list of all loopers in a given team.
//------------------------------------------------------------------------------
// Standard Includes -----------------------------------------------------------
#include <algorithm>
// System Includes -------------------------------------------------------------
#include <Autolock.h>
#include <Looper.h>
// Project Includes ------------------------------------------------------------
// Local Includes --------------------------------------------------------------
#include "LooperList.h"
// Local Defines ---------------------------------------------------------------
// Globals ---------------------------------------------------------------------
using std::vector;
namespace BPrivate {
BLooperList gLooperList;
typedef vector<BLooperList::LooperData>::iterator LDIter;
//------------------------------------------------------------------------------
BLooperList::BLooperList()
: fLooperID(0)
{
}
//------------------------------------------------------------------------------
bool BLooperList::Lock()
{
return fLock.Lock();
}
//------------------------------------------------------------------------------
void BLooperList::Unlock()
{
fLock.Unlock();
}
//------------------------------------------------------------------------------
bool BLooperList::IsLocked()
{
return fLock.IsLocked();
}
//------------------------------------------------------------------------------
void BLooperList::AddLooper(BLooper* looper)
{
BAutolock Listlock(fLock);
AssertLocked();
if (!IsLooperValid(looper))
{
LDIter i = find_if(fData.begin(), fData.end(), EmptySlotPred);
if (i == fData.end())
{
fData.push_back(LooperData(looper, ++fLooperID));
looper->fLooperID = fLooperID;
looper->Lock();
}
else
{
i->looper = looper;
i->id = ++fLooperID;
looper->fLooperID = fLooperID;
looper->Lock();
}
}
}
//------------------------------------------------------------------------------
bool BLooperList::IsLooperValid(const BLooper* looper)
{
BAutolock Listlock(fLock);
AssertLocked();
return find_if(fData.begin(), fData.end(), FindLooperPred(looper)) !=
fData.end();
}
//------------------------------------------------------------------------------
bool BLooperList::RemoveLooper(BLooper* looper)
{
BAutolock Listlock(fLock);
AssertLocked();
LDIter i = find_if(fData.begin(), fData.end(), FindLooperPred(looper));
if (i != fData.end())
{
i->looper = NULL;
return true;
}
return false;
}
//------------------------------------------------------------------------------
void BLooperList::GetLooperList(BList* list)
{
BAutolock Listlock(fLock);
AssertLocked();
for (uint32 i = 0; i < fData.size(); ++i)
{
list->AddItem(fData[i].looper);
}
}
//------------------------------------------------------------------------------
BLooper* BLooperList::LooperForThread(thread_id tid)
{
BAutolock Listlock(fLock);
AssertLocked();
BLooper* looper = NULL;
LDIter i = find_if(fData.begin(), fData.end(), FindThreadPred(tid));
if (i != fData.end())
{
looper = i->looper;
}
return looper;
}
//------------------------------------------------------------------------------
BLooper* BLooperList::LooperForName(const char* name)
{
BAutolock Listlock(fLock);
AssertLocked();
BLooper* looper = NULL;
LDIter i = find_if(fData.begin(), fData.end(), FindNamePred(name));
if (i != fData.end())
{
looper = i->looper;
}
return looper;
}
//------------------------------------------------------------------------------
BLooper* BLooperList::LooperForPort(port_id port)
{
BAutolock Listlock(fLock);
AssertLocked();
BLooper* looper = NULL;
LDIter i = find_if(fData.begin(), fData.end(), FindPortPred(port));
if (i != fData.end())
{
looper = i->looper;
}
return looper;
}
//------------------------------------------------------------------------------
bool BLooperList::EmptySlotPred(LooperData& Data)
{
return Data.looper == NULL;
}
//------------------------------------------------------------------------------
void BLooperList::AssertLocked()
{
if (!IsLocked())
{
debugger("looperlist is not locked; proceed at great risk!");
}
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// #pragma mark -
// #pragma mark BLooperList::LooperData
// #pragma mark -
//------------------------------------------------------------------------------
BLooperList::LooperData::LooperData()
: looper(NULL), id(0)
{
}
//------------------------------------------------------------------------------
BLooperList::LooperData::LooperData(BLooper* loop, uint32 i)
: looper(loop), id(i)
{
;
}
//------------------------------------------------------------------------------
BLooperList::LooperData::LooperData(const LooperData& rhs)
{
*this = rhs;
}
//------------------------------------------------------------------------------
BLooperList::LooperData&
BLooperList::LooperData::operator=(const LooperData& rhs)
{
if (this != &rhs)
{
looper = rhs.looper;
id = rhs.id;
}
return *this;
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
bool BLooperList::FindLooperPred::operator()(BLooperList::LooperData& Data)
{
return looper == Data.looper;
}
//------------------------------------------------------------------------------
bool BLooperList::FindThreadPred::operator()(LooperData& Data)
{
return thread == Data.looper->Thread();
}
//------------------------------------------------------------------------------
bool BLooperList::FindNamePred::operator()(LooperData& Data)
{
return strcmp(name, Data.looper->Name()) == 0;
}
//------------------------------------------------------------------------------
bool BLooperList::FindPortPred::operator()(LooperData& Data)
{
return port == _get_looper_port_(Data.looper);
}
//------------------------------------------------------------------------------
} // namespace BPrivate
/*
* $Log $
*
* $Id $
*
*/