shptr.h File Reference

Shared pointer macros. More...

#include <yaz/xmalloc.h>
#include <yaz/mutex.h>

Go to the source code of this file.

Macros
#define	YAZ_SHPTR_TYPE(type)
#define	YAZ_SHPTR_INIT(p, n)
#define	YAZ_SHPTR_INC(p)
#define	YAZ_SHPTR_DEC(p, destroy)

Detailed Description

Shared pointer macros.

Definition in file shptr.h.

Macro Definition Documentation

YAZ_SHPTR_DEC

#define YAZ_SHPTR_DEC	(		p,
			destroy
	)

Value:

    {             \
    yaz_mutex_enter(p->mutex);                   \
    if (--p->ref == 0) {                         \
        yaz_mutex_leave(p->mutex);               \
        destroy(p->ptr);                         \
        yaz_mutex_destroy(&p->mutex);            \
        xfree(p);                                \
        p = 0;                                   \
    } else { \
    yaz_mutex_leave(p->mutex); \
    } \
    }

Definition at line 64 of file shptr.h.

YAZ_SHPTR_INC

#define YAZ_SHPTR_INC

(

p

)

Value:

        {                      \
        yaz_mutex_enter(p->mutex);              \
        p->ref++;                               \
        yaz_mutex_leave(p->mutex);              \
    }

Definition at line 58 of file shptr.h.

YAZ_SHPTR_INIT

#define YAZ_SHPTR_INIT	(		p,
			n
	)

Value:

        {                   \
        p = xmalloc(sizeof(*p));                \
        p->ptr = n;                             \
        p->ref = 1;                             \
        p->mutex = 0;  \
        yaz_mutex_create(&p->mutex);            \
    }

Definition at line 50 of file shptr.h.

YAZ_SHPTR_TYPE

#define YAZ_SHPTR_TYPE

(

type

)

Value:

    struct type##_shptr \
    {                          \
    type ptr;                  \
    int ref;                   \
    YAZ_MUTEX mutex;           \
    };  \
    typedef struct type##_shptr *type##_shptr_t;

Definition at line 41 of file shptr.h.