Use std::atomic_int for hsSafeRefCnt, and move it to hsRefCnt.h/cpp

Sources/Plasma/CoreLib/CMakeLists.txt

@@ -43,7 +43,6 @@ set(CoreLib_SOURCES
     hsMemory.cpp
     hsQuat.cpp
     hsRefCnt.cpp
-    hsSafeRefCnt.cpp
     hsSTLStream.cpp
     hsStream.cpp
     hsStringTokenizer.cpp
@@ -88,7 +87,6 @@ set(CoreLib_HEADERS
     hsPoint2.h
     hsQuat.h
     hsRefCnt.h
-    hsSafeRefCnt.h
     hsSTLStream.h
     hsStream.h
     hsStringTokenizer.h

Sources/Plasma/CoreLib/hsRefCnt.cpp

@@ -48,17 +48,35 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 hsRefCnt::~hsRefCnt()
 {
-    hsDebugCode(hsThrowIfFalse(fRefCnt == 1);)
+#ifdef HS_DEBUGGING
+    hsThrowIfFalse(fRefCnt == 1);
+#endif
 }
 
-void hsRefCnt::Ref()
+void hsRefCnt::UnRef()
+{
+#ifdef HS_DEBUGGING
+    hsThrowIfFalse(fRefCnt >= 1);
+#endif
+
+    if (fRefCnt == 1)   // don't decrement if we call delete
+        delete this;
+    else
+        --fRefCnt;
+}
+
+hsSafeRefCnt::~hsSafeRefCnt()
 {
-    fRefCnt++;
+#ifdef HS_DEBUGGING
+    hsThrowIfFalse(fRefCnt == 1);
+#endif
 }
 
-void hsRefCnt::UnRef()
+void hsSafeRefCnt::UnRef()
 {
-    hsDebugCode(hsThrowIfFalse(fRefCnt >= 1);)
+#ifdef HS_DEBUGGING
+    hsThrowIfFalse(fRefCnt >= 1);
+#endif
 
     if (fRefCnt == 1)   // don't decrement if we call delete
         delete this;

Sources/Plasma/CoreLib/hsRefCnt.h

@@ -42,6 +42,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #ifndef hsRefCnt_Defiend
 #define hsRefCnt_Defiend
 
+#include <atomic>
+
 class hsRefCnt {
 private:
     int         fRefCnt;
@@ -49,9 +51,9 @@ public:
                 hsRefCnt() : fRefCnt(1) {}
     virtual     ~hsRefCnt();
 
-    virtual int     RefCnt() const { return fRefCnt; }
-    virtual void    UnRef();
-    virtual void    Ref();
+    inline int  RefCnt() const { return fRefCnt; }
+    void        UnRef();
+    inline void Ref() { ++fRefCnt; }
 };
 
 #define hsRefCnt_SafeRef(obj)       do { if (obj) (obj)->Ref(); } while (0)
@@ -64,4 +66,21 @@ public:
             dst = src;                  \
         } while (0)
 
+
+// Thread-safe version.  TODO:  Evaluate whether this is fast enough to
+// merge with hsRefCnt above.
+class hsSafeRefCnt
+{
+private:
+    std::atomic<int> fRefCnt;
+
+public:
+                hsSafeRefCnt() : fRefCnt(1) { }
+    virtual     ~hsSafeRefCnt();
+
+    inline int  RefCnt() const { return fRefCnt; }
+    void        UnRef();
+    inline void Ref() { ++fRefCnt; }
+};
+
 #endif

Sources/Plasma/CoreLib/hsSafeRefCnt.cpp

@@ -1,44 +0,0 @@
-/*==LICENSE==*
-
-CyanWorlds.com Engine - MMOG client, server and tools
-Copyright (C) 2011  Cyan Worlds, Inc.
-
-This program 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 program 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-Additional permissions under GNU GPL version 3 section 7
-
-If you modify this Program, or any covered work, by linking or
-combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
-NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
-JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
-(or a modified version of those libraries),
-containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
-PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
-JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
-licensors of this Program grant you additional
-permission to convey the resulting work. Corresponding Source for a
-non-source form of such a combination shall include the source code for
-the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
-work.
-
-You can contact Cyan Worlds, Inc. by email legal@cyan.com
- or by snail mail at:
-      Cyan Worlds, Inc.
-      14617 N Newport Hwy
-      Mead, WA   99021
-
-*==LICENSE==*/
-#include "hsSafeRefCnt.h"
-
-hsMutex hsSafeRefCnt::fMutex;

Sources/Plasma/CoreLib/hsSafeRefCnt.h

@@ -1,65 +0,0 @@
-/*==LICENSE==*
-
-CyanWorlds.com Engine - MMOG client, server and tools
-Copyright (C) 2011  Cyan Worlds, Inc.
-
-This program 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 program 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-Additional permissions under GNU GPL version 3 section 7
-
-If you modify this Program, or any covered work, by linking or
-combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
-NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
-JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
-(or a modified version of those libraries),
-containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
-PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
-JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
-licensors of this Program grant you additional
-permission to convey the resulting work. Corresponding Source for a
-non-source form of such a combination shall include the source code for
-the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
-work.
-
-You can contact Cyan Worlds, Inc. by email legal@cyan.com
- or by snail mail at:
-      Cyan Worlds, Inc.
-      14617 N Newport Hwy
-      Mead, WA   99021
-
-*==LICENSE==*/
-#ifndef HS_SAFE_REF_CNT_H
-#define HS_SAFE_REF_CNT_H
-
-#include "hsRefCnt.h"
-#include "hsThread.h"
-
-//
-// Thread Safe RefCounter
-//
-
-class hsSafeRefCnt : public hsRefCnt
-{
-private:
-    static hsMutex fMutex;
-protected:
-    virtual void IRef() { } 
-    virtual void IUnRef() { }; 
-public:
-    virtual int RefCnt() const { hsTempMutexLock temp(fMutex); return hsRefCnt::RefCnt(); }
-    void UnRef() { hsTempMutexLock temp(fMutex); IUnRef(); hsRefCnt::UnRef(); }
-    void Ref() { hsTempMutexLock temp(fMutex); IRef(); hsRefCnt::Ref(); }
-};
-
-#endif //HS_SAFE_REF_CNT_H

Sources/Plasma/PubUtilLib/plNetMessage/plNetCommonMessage.h

@@ -43,7 +43,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #define plNetCommonMessage_inc
 
 #include "HeadSpin.h"
-#include "hsSafeRefCnt.h"
+#include "hsRefCnt.h"
 
 //
 // refcntable data