66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
#ifndef TOOLBOX_SHARED_H
|
|
#define TOOLBOX_SHARED_H
|
|
|
|
#include "tools/tools.h"
|
|
|
|
struct cSharedData {
|
|
private:
|
|
uint m_Length;
|
|
uint m_NumRefs;
|
|
|
|
public:
|
|
static cSharedData *Construct (size_t Length);
|
|
|
|
operator char * () { return this ? (char*)(this+1) : 0; }
|
|
|
|
uint operator++ () { return ++m_NumRefs; }
|
|
uint operator-- () { return --m_NumRefs; }
|
|
|
|
size_t Size() const { return m_Length; }
|
|
|
|
uint Refs () const { return m_NumRefs; }
|
|
};
|
|
|
|
class cTBShared {
|
|
private:
|
|
cSharedData *m_Buffer;
|
|
|
|
protected:
|
|
void Release();
|
|
void Exclusive();
|
|
void Allocate(size_t len, bool keep = false);
|
|
|
|
char *Buffer() const { return m_Buffer ? (char*)*m_Buffer : (char*)0; }
|
|
|
|
public:
|
|
cTBShared (void);
|
|
cTBShared (const cTBShared &src);
|
|
virtual ~cTBShared ();
|
|
|
|
virtual void Clear ();
|
|
virtual void Set (const cTBShared &src);
|
|
|
|
virtual char *Buffer (uint size);
|
|
virtual void Release (uint newsize);
|
|
|
|
cTBShared &operator= (const cTBShared &src) { Set(src); return *this; }
|
|
|
|
operator const void * () const { return m_Buffer ? (const void*)*m_Buffer : (const void*)0; }
|
|
operator void * () const { return m_Buffer ? (void*)*m_Buffer : (void*)0; }
|
|
|
|
operator const char * () const { return m_Buffer ? (const char*)*m_Buffer : (const char*)0; }
|
|
|
|
size_t Size() const { return m_Buffer ? m_Buffer->Size() : 0; }
|
|
size_t Length() const { return m_Buffer ? m_Buffer->Size() : 0; }
|
|
|
|
// friend cSource &operator>> (cSource &dest, cTBShared &str);
|
|
};
|
|
|
|
inline char *cTBShared::Buffer(uint size) {
|
|
if ((!m_Buffer) || (m_Buffer->Refs() > 1) || (size > m_Buffer->Size()))
|
|
Allocate(size, true);
|
|
return Buffer();
|
|
}
|
|
|
|
#endif // TOOLBOX_SHARED_H
|