#11072 Refactor: remove homemade atomic counter.

std::atomic was introduced in C++11, and provides same functionality in
platform-independent way.

Fixes #11072.
This commit is contained in:
Kristian Bendiksen 2024-04-17 14:34:28 +02:00
parent c759a11888
commit 3255b649ca
7 changed files with 2 additions and 464 deletions

View File

@ -725,34 +725,6 @@ endif()
# Vizualization Framework
# ##############################################################################
# Allow use of non-threadsafe reference counter in cvf::Object on systems with
# no atomics support
if(CMAKE_COMPILER_IS_GNUCC)
if(NOT DEFINED HAVE_GCC_SYNC_FUNCTIONS)
check_c_source_compiles(
"int main(int argc, char **argv) {
int a;
__sync_add_and_fetch(&a, 1);
__sync_fetch_and_add(&a, 1);
__sync_sub_and_fetch(&a, 1);
__sync_fetch_and_sub(&a, 1); }"
HAVE_GCC_SYNC_FUNCTIONS
)
endif()
if(HAVE_GCC_SYNC_FUNCTIONS)
message(STATUS "GCC synchronization functions detected")
else()
message(
STATUS
"GCC synchronization functions NOT detected, fallback to non threadsafe reference counting"
)
add_definitions(-DCVF_USE_NON_THREADSAFE_REFERENCE_COUNT)
endif()
endif()
# !!! For now, we force Qt to version 5
message(STATUS "Forcing setting of CEE_USE_QT5 to ON")
set(CEE_USE_QT5

View File

@ -19,7 +19,6 @@ cvfArray.inl
cvfArrayWrapperConst.h
cvfArrayWrapperToEdit.h
cvfAssert.h
cvfAtomicCounter.h
cvfBase.h
cvfBase64.h
cvfCharArray.h
@ -75,7 +74,6 @@ cvfVersion.h
set(CEE_SOURCE_FILES
cvfAssert.cpp
cvfAtomicCounter.cpp
cvfBase64.cpp
cvfCharArray.cpp
cvfCodeLocation.cpp

View File

@ -1,187 +0,0 @@
//##################################################################################################
//
// Custom Visualization Core library
// Copyright (C) 2014 Ceetron Solutions AS
//
// This library may be used under the terms of either the GNU General Public License or
// the GNU Lesser General Public License as follows:
//
// GNU General Public License Usage
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
// for more details.
//
// GNU Lesser General Public License Usage
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
// for more details.
//
//##################################################################################################
#include "cvfAtomicCounter.h"
// Some older GCC version do not support atomics, we have seen this for RHEL5
#if defined(CVF_ATOMIC_COUNTER_CLASS_EXISTS)
namespace cvf {
#ifdef WIN32
#pragma warning (push)
#pragma warning (disable: 4668)
#include <windows.h>
#pragma warning (pop)
AtomicCounter::AtomicCounter(int initialValue)
: m_counter(initialValue)
{
}
AtomicCounter::~AtomicCounter()
{
}
AtomicCounter::operator int () const
{
return m_counter;
}
int AtomicCounter::operator ++ () // prefix
{
return InterlockedIncrement(&m_counter);
}
int AtomicCounter::operator ++ (int) // postfix
{
int result = InterlockedIncrement(&m_counter);
return --result;
}
int AtomicCounter::operator -- () // prefix
{
return InterlockedDecrement(&m_counter);
}
int AtomicCounter::operator -- (int) // postfix
{
int result = InterlockedDecrement(&m_counter);
return ++result;
}
#elif defined(CVF_IOS) || defined(CVF_OSX)
AtomicCounter::AtomicCounter(int initialValue)
: m_counter(initialValue)
{
}
AtomicCounter::~AtomicCounter()
{
}
AtomicCounter::operator int () const
{
return m_counter;
}
int AtomicCounter::operator ++ () // prefix
{
return OSAtomicIncrement32(&m_counter);
}
int AtomicCounter::operator ++ (int) // postfix
{
int result = OSAtomicIncrement32(&m_counter);
return --result;
}
int AtomicCounter::operator -- () // prefix
{
return OSAtomicDecrement32(&m_counter);
}
int AtomicCounter::operator -- (int) // postfix
{
int result = OSAtomicDecrement32(&m_counter);
return ++result;
}
#elif defined(CVF_GCC_DEFINED)
AtomicCounter::AtomicCounter(int initialValue)
: m_counter(initialValue)
{
}
AtomicCounter::~AtomicCounter()
{
}
AtomicCounter::operator int () const
{
return m_counter;
}
int AtomicCounter::operator ++ () // prefix
{
return __sync_add_and_fetch(&m_counter, 1);
}
int AtomicCounter::operator ++ (int) // postfix
{
return __sync_fetch_and_add(&m_counter, 1);
}
int AtomicCounter::operator -- () // prefix
{
return __sync_sub_and_fetch(&m_counter, 1);
}
int AtomicCounter::operator -- (int) // postfix
{
return __sync_fetch_and_sub(&m_counter, 1);
}
#endif
} // namespace cvf
#endif // CVF_ATOMICS_COMPILED

View File

@ -1,91 +0,0 @@
//##################################################################################################
//
// Custom Visualization Core library
// Copyright (C) 2014 Ceetron Solutions AS
//
// This library may be used under the terms of either the GNU General Public License or
// the GNU Lesser General Public License as follows:
//
// GNU General Public License Usage
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
// for more details.
//
// GNU Lesser General Public License Usage
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
// for more details.
//
//##################################################################################################
#pragma once
#include "cvfBase.h"
#ifdef WIN32
#define CVF_ATOMIC_COUNTER_CLASS_EXISTS
#elif defined(CVF_IOS) || defined(CVF_OSX)
#include <libkern/OSAtomic.h>
#define CVF_ATOMIC_COUNTER_CLASS_EXISTS
#elif defined __GNUC__
#define CVF_GCC_DEFINED
#define CVF_ATOMIC_COUNTER_CLASS_EXISTS
#endif
#if defined(CVF_ATOMIC_COUNTER_CLASS_EXISTS)
namespace cvf {
// Inspired by Poco
class AtomicCounter
{
public:
explicit AtomicCounter(int initialValue);
~AtomicCounter();
operator int () const;
int operator ++ (); // prefix
int operator ++ (int); // postfix
int operator -- (); // prefix
int operator -- (int); // postfix
private:
CVF_DISABLE_COPY_AND_ASSIGN(AtomicCounter);
#ifdef WIN32
typedef volatile long ImplType;
#elif defined(CVF_IOS) || defined(CVF_OSX)
typedef int32_t ImplType;
#else
typedef int ImplType;
#endif
ImplType m_counter;
};
} // namespace cvf
#endif

View File

@ -41,12 +41,8 @@
#include "cvfSystem.h"
#include <set>
#include <atomic>
#include "cvfAtomicCounter.h"
#if !defined(CVF_ATOMIC_COUNTER_CLASS_EXISTS) && !defined(CVF_USE_NON_THREADSAFE_REFERENCE_COUNT)
#error No support for atomics. Define CVF_USE_NON_THREADSAFE_REFERENCE_COUNT to be able to compile
#endif
namespace cvf {
@ -71,15 +67,7 @@ public:
static void dumpActiveObjectInstances();
private:
#if defined(CVF_USE_NON_THREADSAFE_REFERENCE_COUNT)
mutable int m_refCount;
#elif defined(CVF_ATOMIC_COUNTER_CLASS_EXISTS)
mutable AtomicCounter m_refCount;
#else
#error No support for atomics. Define CVF_USE_NON_THREADSAFE_REFERENCE_COUNT to be able to compile
#endif
mutable std::atomic<int> m_refCount;
CVF_DISABLE_COPY_AND_ASSIGN(Object);
};

View File

@ -12,7 +12,6 @@ set(CEE_LIBS LibCore)
set(CEE_SOURCE_FILES
cvfArray-Test.cpp
cvfArrayWrapper-Test.cpp
cvfAtomicCounter-Test.cpp
cvfBase-Test.cpp
cvfBase64-Test.cpp
cvfCharArray-Test.cpp

View File

@ -1,141 +0,0 @@
//##################################################################################################
//
// Custom Visualization Core library
// Copyright (C) 2014 Ceetron Solutions AS
//
// This library may be used under the terms of either the GNU General Public License or
// the GNU Lesser General Public License as follows:
//
// GNU General Public License Usage
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
// for more details.
//
// GNU Lesser General Public License Usage
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
// for more details.
//
//##################################################################################################
#include "cvfAtomicCounter.h"
#ifdef CVF_ATOMIC_COUNTER_CLASS_EXISTS
#include "cvfDebugTimer.h"
#include "cvfObject.h"
#include "cvfCollection.h"
#include "gtest/gtest.h"
using namespace cvf;
class MyObj : public Object
{
public:
MyObj() { num_ = 0; }
MyObj(int num) { num_ = num; }
int num() const { return num_; }
void num(int num) { num_ = num; }
bool operator<(const MyObj& rhs)
{
return num_ < rhs.num_;
}
private:
int num_;
};
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST(DISABLED_ObjectConstructionBenchmark, TestBasicObjectConstruction)
{
int objectCount = 1000000;
int iterationCount = 5;
String sNumber(objectCount);
String refCountTxt = String("TestBasicObjectConstruction : ") + sNumber;
DebugTimer tim(refCountTxt.toAscii().ptr());
for (int iteration = 0; iteration < iterationCount; iteration++)
{
for (int i = 0; i < objectCount; i++)
{
MyObj* r2 = new MyObj();
r2->addRef();
r2->release();
}
tim.reportLapTimeMS();
}
}
class ObjectReferencingSharedObject : public Object
{
public:
ObjectReferencingSharedObject() { }
cvf::ref<MyObj> m_sharedObject;
};
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST(DISABLED_ObjectConstructionBenchmark, TestReferenceOtherObject)
{
int objectCount = 1000000;
int iterationCount = 5;
String sNumber(objectCount);
String refCountTxt = String("TestReferenceOtherObjectClass : ") + sNumber;
DebugTimer tim(refCountTxt.toAscii().ptr());
for (int iteration = 0; iteration < iterationCount; iteration++)
{
cvf::ref<MyObj> sharedObj = new MyObj();
std::vector< cvf::ref<ObjectReferencingSharedObject> > col;
col.resize(objectCount);
for (int i = 0; i < objectCount; i++)
{
cvf::ref<ObjectReferencingSharedObject> newObj = new ObjectReferencingSharedObject();
newObj->m_sharedObject = sharedObj.p();
col[i] = newObj;
}
String sNumber(sharedObj->refCount());
String refCountTxt = String("Shared object reference count : ") + sNumber;
tim.reportLapTimeMS(refCountTxt.toAscii().ptr());
}
}
#endif //#ifdef CVF_ATOMIC_COUNTER_CLASS_EXISTS