#define __base_object_h
#include <assert.h>
+#include <lib/base/smartptr.h>
+#include <lib/base/elock.h>
-// #define OBJECT_DEBUG
+//#define OBJECT_DEBUG
-#include <lib/base/smartptr.h>
-#ifdef OBJECT_DEBUG
#include <lib/base/eerror.h>
-#endif
typedef int RESULT;
class iObject
{
+private:
+ /* we don't allow the default operator here, as it would break the refcount. */
+ void operator=(const iObject &);
+protected:
+ virtual ~iObject() { }
public:
virtual void AddRef()=0;
virtual void Release()=0;
};
-class oRefCount
-{
- int ref;
-public:
- oRefCount(): ref(0) { }
- operator int&() { return ref; }
-};
+#ifndef SWIG
+ struct oRefCount
+ {
+ volatile int count;
+ oRefCount(): count(0) { }
+ operator volatile int&() { return count; }
+ ~oRefCount()
+ {
+ #ifdef OBJECT_DEBUG
+ if (count)
+ eDebug("OBJECT_DEBUG FATAL: %p has %d references!", this, count);
+ else
+ eDebug("OBJECT_DEBUG refcount ok! (%p)", this);
+ #endif
+ }
+ };
-#define DECLARE_REF private: oRefCount ref; public: void AddRef(); void Release();
-#ifdef OBJECT_DEBUG
-extern int object_total_remaining;
-#define DEFINE_REF(c) void c::AddRef() { ++object_total_remaining; ++ref; eDebug("OBJECT_DEBUG " #c "+%p now %d", this, (int)ref); } void c::Release() { --object_total_remaining; eDebug("OBJECT_DEBUG " #c "-%p now %d", this, ref-1); if (!--ref) delete this; }
-#else
-#define DEFINE_REF(c) void c::AddRef() { ++ref; } void c::Release() { if (!--ref) delete this; }
-#endif
+ #if defined(OBJECT_DEBUG)
+ extern int object_total_remaining;
+ #define DECLARE_REF(x) \
+ private:oRefCount ref; \
+ eSingleLock ref_lock; \
+ public: void AddRef(); \
+ void Release();
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ eSingleLocker l(ref_lock); \
+ ++object_total_remaining; \
+ ++ref; \
+ eDebug("OBJECT_DEBUG " #c "+%p now %d", this, (int)ref); \
+ } \
+ void c::Release() \
+ { \
+ { \
+ eSingleLocker l(ref_lock); \
+ --object_total_remaining; \
+ --ref; \
+ eDebug("OBJECT_DEBUG " #c "-%p now %d", this, (int)ref); \
+ } \
+ if (!ref) \
+ delete this; \
+ }
+ #elif defined(__mips__)
+ #define DECLARE_REF(x) \
+ private: oRefCount ref; \
+ public: void AddRef(); \
+ void Release();
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ unsigned long temp; \
+ __asm__ __volatile__( \
+ " .set mips3 \n" \
+ "1: ll %0, %1 # load counter \n" \
+ " .set mips0 \n" \
+ " addu %0, 1 # increment \n" \
+ " .set mips3 \n" \
+ " sc %0, %1 # try to store, checking for atomicity \n" \
+ " .set mips0 \n" \
+ " beqz %0, 1b # if not atomic (0), try again \n" \
+ : "=&r" (temp), "=m" (ref.count) \
+ : "m" (ref.count) \
+ : ); \
+ } \
+ void c::Release() \
+ { \
+ unsigned long temp; \
+ __asm__ __volatile__( \
+ " .set mips3 \n" \
+ "1: ll %0, %1 \n" \
+ " .set mips0 \n" \
+ " subu %0, 1 # decrement \n" \
+ " .set mips3 \n" \
+ " sc %0, %1 \n" \
+ " .set mips0 \n" \
+ " beqz %0, 1b \n" \
+ : "=&r" (temp), "=m" (ref.count) \
+ : "m" (ref.count) \
+ : ); \
+ if (!ref) \
+ delete this; \
+ }
+ #elif defined(__ppc__) || defined(__powerpc__)
+ #define DECLARE_REF(x) \
+ private: oRefCount ref; \
+ public: void AddRef(); \
+ void Release();
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ int temp; \
+ __asm__ __volatile__( \
+ "1: lwarx %0, 0, %3 \n" \
+ " add %0, %2, %0 \n" \
+ " dcbt 0, %3 # workaround for PPC405CR Errata\n" \
+ " stwcx. %0, 0, %3 \n" \
+ " bne- 1b \n" \
+ : "=&r" (temp), "=m" (ref.count) \
+ : "r" (1), "r" (&ref.count), "m" (ref.count) \
+ : "cc"); \
+ } \
+ void c::Release() \
+ { \
+ int temp; \
+ __asm__ __volatile__( \
+ "1: lwarx %0, 0, %3 \n" \
+ " subf %0, %2, %0 \n" \
+ " dcbt 0, %3 # workaround for PPC405CR Errata\n" \
+ " stwcx. %0, 0, %3 \n" \
+ " bne- 1b \n" \
+ : "=&r" (temp), "=m" (ref.count) \
+ : "r" (1), "r" (&ref.count), "m" (ref.count) \
+ : "cc"); \
+ if (!ref) \
+ delete this; \
+ }
+ #elif defined(__i386__) || defined(__x86_64__)
+ #define DECLARE_REF(x) \
+ private: oRefCount ref; \
+ public: void AddRef(); \
+ void Release();
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ __asm__ __volatile__( \
+ " lock ; incl %0 \n" \
+ : "=m" (ref.count) \
+ : "m" (ref.count)); \
+ } \
+ void c::Release() \
+ { \
+ __asm__ __volatile__( \
+ " lock ; decl %0 \n" \
+ : "=m" (ref.count) \
+ : "m" (ref.count)); \
+ if (!ref) \
+ delete this; \
+ }
+ #else
+ #warning use non optimized implementation of refcounting.
+ #define DECLARE_REF(x) \
+ private:oRefCount ref; \
+ eSingleLock ref_lock; \
+ public: void AddRef(); \
+ void Release();
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ eSingleLocker l(ref_lock); \
+ ++ref; \
+ } \
+ void c::Release() \
+ { \
+ { \
+ eSingleLocker l(ref_lock); \
+ --ref; \
+ } \
+ if (!ref) \
+ delete this; \
+ }
+ #endif
+#else // SWIG
+ #define DECLARE_REF(x) \
+ private: \
+ void AddRef(); \
+ void Release();
+ class Object
+ {
+ };
+#endif // SWIG
-#endif
+#endif // __base_object_h
git.cweiske.de / enigma2.git / blobdiff