#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
-#include <lib/base/elock.h>
typedef int RESULT;
/* we don't allow the default operator here, as it would break the refcount. */
void operator=(const iObject &);
protected:
+ void operator delete(void *p) { ::operator delete(p); }
virtual ~iObject() { }
-public:
+#ifdef SWIG
virtual void AddRef()=0;
virtual void Release()=0;
-};
-
-class oRefCount
-{
- int ref;
+#endif
public:
- oRefCount(): ref(0) { }
- operator int&() { return ref; }
- ~oRefCount() {
-#ifdef OBJECT_DEBUG
- if (ref) eDebug("OBJECT_DEBUG FATAL: %p has %d references!", this, ref); else eDebug("OBJECT_DEBUG refcount ok! (%p)", this);
+#ifndef SWIG
+ virtual void AddRef()=0;
+ virtual void Release()=0;
#endif
- }
};
#ifndef SWIG
- #if defined(__mips__)
+ 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
+ }
+ };
+
+ #if defined(OBJECT_DEBUG)
+ extern int object_total_remaining;
#define DECLARE_REF(x) \
- private: oRefCount ref; \
public: void AddRef(); \
- void Release();
+ void Release(); \
+ private:oRefCount ref; \
+ eSingleLock ref_lock;
+ #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) \
+ public: void AddRef(); \
+ void Release(); \
+ private: oRefCount ref;
#define DEFINE_REF(c) \
void c::AddRef() \
{ \
unsigned long temp; \
__asm__ __volatile__( \
- " .set mips3 \n" \
- "1: ll %0, %1 \n" \
- " .set mips0 \n" \
- " addu %0, 1 \n" \
- " .set mips3 \n" \
- " sc %0, %1 \n" \
- " .set mips0 \n" \
- " beqz %0, 1b \n" \
- : "=&r" (temp), "=m" ((int)ref) \
- : "m" ((int)ref) \
- : "memory"); \
+ " .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 \n" \
- " .set mips3 \n" \
- " sc %0, %1 \n" \
- " .set mips0 \n" \
- " beqz %0, 1b \n" \
- : "=&r" (temp), "=m" ((int)ref) \
- : "m" ((int)ref) \
- : "memory"); \
+ " .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__)
+ #elif defined(__ppc__) || defined(__powerpc__)
#define DECLARE_REF(x) \
- private: oRefCount ref; \
public: void AddRef(); \
- void Release();
+ void Release(); \
+ private: oRefCount ref;
#define DEFINE_REF(c) \
void c::AddRef() \
{ \
__asm__ __volatile__( \
"1: lwarx %0, 0, %3 \n" \
" add %0, %2, %0 \n" \
- " dcbt 0, %3 \n" \
+ " dcbt 0, %3 # workaround for PPC405CR Errata\n" \
" stwcx. %0, 0, %3 \n" \
" bne- 1b \n" \
- : "=&r" (temp), "=m" ((int)ref) \
- : "r" (1), "r" (&((int)ref)), "m" ((int)ref) \
+ : "=&r" (temp), "=m" (ref.count) \
+ : "r" (1), "r" (&ref.count), "m" (ref.count) \
: "cc"); \
} \
void c::Release() \
__asm__ __volatile__( \
"1: lwarx %0, 0, %3 \n" \
" subf %0, %2, %0 \n" \
- " dcbt 0, %3 \n" \
+ " dcbt 0, %3 # workaround for PPC405CR Errata\n" \
" stwcx. %0, 0, %3 \n" \
" bne- 1b \n" \
- : "=&r" (temp), "=m" ((int)ref) \
- : "r" (1), "r" (&((int)ref)), "m" ((int)ref) \
+ : "=&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) \
+ public: void AddRef(); \
+ void Release(); \
+ private: oRefCount ref;
+ #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();
- #ifdef OBJECT_DEBUG
- extern int object_total_remaining;
- #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, ref); \
- } \
- if (!ref) \
- delete this; \
- }
- #error fix locking for debug
- #else
- #define DEFINE_REF(c) \
- void c::AddRef() \
+ void Release(); \
+ private:oRefCount ref; \
+ eSingleLock ref_lock;
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ eSingleLocker l(ref_lock); \
+ ++ref; \
+ } \
+ void c::Release() \
+ { \
{ \
eSingleLocker l(ref_lock); \
- ++ref; \
+ --ref; \
} \
- void c::Release() \
- { \
- { \
- eSingleLocker l(ref_lock); \
- --ref; \
- } \
- if (!ref) \
- delete this; \
- }
- #endif
+ if (!ref) \
+ delete this; \
+ }
#endif
-#else
+#else // SWIG
#define DECLARE_REF(x) \
private: \
void AddRef(); \
void Release();
-#endif
-
-#ifdef SWIG
-class Object
-{
-};
-#endif
+#endif // SWIG
-#endif
+#endif // __base_object_h
git.cweiske.de / enigma2.git / blobdiff