Geforce File Manager

NAME	SIZE	ACTIONS
📄 aes.h	1,080 B	[ EDIT ] \| [ DEL ]
📄 app.h	10,478 B	[ EDIT ] \| [ DEL ]
📄 assertions.h	2,907 B	[ EDIT ] \| [ DEL ]
📄 atomic.h	4,168 B	[ EDIT ] \| [ DEL ]
📄 backtrace.h	3,891 B	[ EDIT ] \| [ DEL ]
📄 base32.h	4,453 B	[ EDIT ] \| [ DEL ]
📄 base64.h	2,866 B	[ EDIT ] \| [ DEL ]
📄 bind9.h	830 B	[ EDIT ] \| [ DEL ]
📄 boolean.h	594 B	[ EDIT ] \| [ DEL ]
📄 buffer.h	26,268 B	[ EDIT ] \| [ DEL ]
📄 bufferlist.h	1,452 B	[ EDIT ] \| [ DEL ]
📄 cmocka.h	1,383 B	[ EDIT ] \| [ DEL ]
📄 commandline.h	1,713 B	[ EDIT ] \| [ DEL ]
📄 condition.h	1,478 B	[ EDIT ] \| [ DEL ]
📄 counter.h	1,926 B	[ EDIT ] \| [ DEL ]
📄 crc64.h	998 B	[ EDIT ] \| [ DEL ]
📄 deprecated.h	623 B	[ EDIT ] \| [ DEL ]
📄 dir.h	1,598 B	[ EDIT ] \| [ DEL ]
📄 endian.h	4,778 B	[ EDIT ] \| [ DEL ]
📄 entropy.h	10,373 B	[ EDIT ] \| [ DEL ]
📄 errno.h	659 B	[ EDIT ] \| [ DEL ]
📄 errno2result.h	902 B	[ EDIT ] \| [ DEL ]
📄 error.h	1,430 B	[ EDIT ] \| [ DEL ]
📄 event.h	3,053 B	[ EDIT ] \| [ DEL ]
📄 eventclass.h	1,381 B	[ EDIT ] \| [ DEL ]
📄 file.h	11,667 B	[ EDIT ] \| [ DEL ]
📄 formatcheck.h	893 B	[ EDIT ] \| [ DEL ]
📄 fsaccess.h	7,442 B	[ EDIT ] \| [ DEL ]
📄 hash.h	7,662 B	[ EDIT ] \| [ DEL ]
📄 heap.h	5,264 B	[ EDIT ] \| [ DEL ]
📄 hex.h	2,806 B	[ EDIT ] \| [ DEL ]
📄 hmacmd5.h	1,787 B	[ EDIT ] \| [ DEL ]
📄 hmacsha.h	4,511 B	[ EDIT ] \| [ DEL ]
📄 ht.h	4,396 B	[ EDIT ] \| [ DEL ]
📄 httpd.h	2,318 B	[ EDIT ] \| [ DEL ]
📄 int.h	1,088 B	[ EDIT ] \| [ DEL ]
📄 interfaceiter.h	3,120 B	[ EDIT ] \| [ DEL ]
📄 iterated_hash.h	1,046 B	[ EDIT ] \| [ DEL ]
📄 json.h	1,459 B	[ EDIT ] \| [ DEL ]
📄 keyboard.h	989 B	[ EDIT ] \| [ DEL ]
📄 lang.h	637 B	[ EDIT ] \| [ DEL ]
📄 lex.h	9,771 B	[ EDIT ] \| [ DEL ]
📄 lfsr.h	2,958 B	[ EDIT ] \| [ DEL ]
📄 lib.h	1,068 B	[ EDIT ] \| [ DEL ]
📄 likely.h	818 B	[ EDIT ] \| [ DEL ]
📄 list.h	5,751 B	[ EDIT ] \| [ DEL ]
📄 log.h	28,734 B	[ EDIT ] \| [ DEL ]
📄 magic.h	994 B	[ EDIT ] \| [ DEL ]
📄 md5.h	2,380 B	[ EDIT ] \| [ DEL ]
📄 mem.h	21,110 B	[ EDIT ] \| [ DEL ]
📄 meminfo.h	710 B	[ EDIT ] \| [ DEL ]
📄 msgcat.h	2,726 B	[ EDIT ] \| [ DEL ]
📄 msgs.h	8,422 B	[ EDIT ] \| [ DEL ]
📄 mutex.h	3,524 B	[ EDIT ] \| [ DEL ]
📄 mutexblock.h	1,375 B	[ EDIT ] \| [ DEL ]
📄 net.h	10,534 B	[ EDIT ] \| [ DEL ]
📄 netaddr.h	4,590 B	[ EDIT ] \| [ DEL ]
📄 netdb.h	863 B	[ EDIT ] \| [ DEL ]
📄 netscope.h	967 B	[ EDIT ] \| [ DEL ]
📄 offset.h	700 B	[ EDIT ] \| [ DEL ]
📄 once.h	983 B	[ EDIT ] \| [ DEL ]
📄 ondestroy.h	2,799 B	[ EDIT ] \| [ DEL ]
📄 os.h	671 B	[ EDIT ] \| [ DEL ]
📄 parseint.h	1,542 B	[ EDIT ] \| [ DEL ]
📄 platform.h	9,717 B	[ EDIT ] \| [ DEL ]
📄 pool.h	3,502 B	[ EDIT ] \| [ DEL ]
📄 portset.h	3,295 B	[ EDIT ] \| [ DEL ]
📄 print.h	2,475 B	[ EDIT ] \| [ DEL ]
📄 queue.h	5,204 B	[ EDIT ] \| [ DEL ]
📄 quota.h	2,440 B	[ EDIT ] \| [ DEL ]
📄 radix.h	6,491 B	[ EDIT ] \| [ DEL ]
📄 random.h	3,582 B	[ EDIT ] \| [ DEL ]
📄 ratelimiter.h	3,497 B	[ EDIT ] \| [ DEL ]
📄 refcount.h	8,193 B	[ EDIT ] \| [ DEL ]
📄 regex.h	767 B	[ EDIT ] \| [ DEL ]
📄 region.h	2,034 B	[ EDIT ] \| [ DEL ]
📄 resource.h	2,862 B	[ EDIT ] \| [ DEL ]
📄 result.h	4,982 B	[ EDIT ] \| [ DEL ]
📄 resultclass.h	1,599 B	[ EDIT ] \| [ DEL ]
📄 rwlock.h	3,807 B	[ EDIT ] \| [ DEL ]
📄 safe.h	1,352 B	[ EDIT ] \| [ DEL ]
📄 serial.h	1,368 B	[ EDIT ] \| [ DEL ]
📄 sha1.h	1,556 B	[ EDIT ] \| [ DEL ]
📄 sha2.h	5,733 B	[ EDIT ] \| [ DEL ]
📄 siphash.h	734 B	[ EDIT ] \| [ DEL ]
📄 sockaddr.h	6,039 B	[ EDIT ] \| [ DEL ]
📄 socket.h	36,655 B	[ EDIT ] \| [ DEL ]
📄 stat.h	806 B	[ EDIT ] \| [ DEL ]
📄 stats.h	3,709 B	[ EDIT ] \| [ DEL ]
📄 stdatomic.h	5,250 B	[ EDIT ] \| [ DEL ]
📄 stdio.h	1,787 B	[ EDIT ] \| [ DEL ]
📄 stdlib.h	704 B	[ EDIT ] \| [ DEL ]
📄 stdtime.h	1,065 B	[ EDIT ] \| [ DEL ]
📄 strerror.h	777 B	[ EDIT ] \| [ DEL ]
📄 string.h	6,019 B	[ EDIT ] \| [ DEL ]
📄 symtab.h	4,326 B	[ EDIT ] \| [ DEL ]
📄 syslog.h	844 B	[ EDIT ] \| [ DEL ]
📄 task.h	21,544 B	[ EDIT ] \| [ DEL ]
📄 taskpool.h	3,709 B	[ EDIT ] \| [ DEL ]
📄 thread.h	1,506 B	[ EDIT ] \| [ DEL ]
📄 time.h	8,876 B	[ EDIT ] \| [ DEL ]
📄 timer.h	10,795 B	[ EDIT ] \| [ DEL ]
📄 tm.h	895 B	[ EDIT ] \| [ DEL ]
📄 types.h	5,780 B	[ EDIT ] \| [ DEL ]
📄 utf8.h	928 B	[ EDIT ] \| [ DEL ]
📄 util.h	10,537 B	[ EDIT ] \| [ DEL ]
📄 version.h	689 B	[ EDIT ] \| [ DEL ]
📄 xml.h	1,094 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: refcount.h

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef ISC_REFCOUNT_H
#define ISC_REFCOUNT_H 1

#include <inttypes.h>

#include <isc/assertions.h>
#include <isc/atomic.h>
#include <isc/error.h>
#include <isc/lang.h>
#include <isc/mutex.h>
#include <isc/platform.h>
#include <isc/types.h>

#if defined(ISC_PLATFORM_HAVESTDATOMIC)
#if defined (__cplusplus)
#include <isc/stdatomic.h>
#else
#include <stdatomic.h>
#endif
#endif

/*! \file isc/refcount.h
 * \brief Implements a locked reference counter.
 *
 * These functions may actually be
 * implemented using macros, and implementations of these macros are below.
 * The isc_refcount_t type should not be accessed directly, as its contents
 * depend on the implementation.
 */

ISC_LANG_BEGINDECLS

/*
 * Function prototypes
 */

/*
 * isc_result_t
 * isc_refcount_init(isc_refcount_t *ref, unsigned int n);
 *
 * Initialize the reference counter.  There will be 'n' initial references.
 *
 * Requires:
 *	ref != NULL
 */

/*
 * void
 * isc_refcount_destroy(isc_refcount_t *ref);
 *
 * Destroys a reference counter.
 *
 * Requires:
 *	ref != NULL
 *	The number of references is 0.
 */

/*
 * void
 * isc_refcount_increment(isc_refcount_t *ref, unsigned int *targetp);
 * isc_refcount_increment0(isc_refcount_t *ref, unsigned int *targetp);
 *
 * Increments the reference count, returning the new value in targetp if it's
 * not NULL.  The reference counter typically begins with the initial counter
 * of 1, and will be destroyed once the counter reaches 0.  Thus,
 * isc_refcount_increment() additionally requires the previous counter be
 * larger than 0 so that an error which violates the usage can be easily
 * caught.  isc_refcount_increment0() does not have this restriction.
 *
 * Requires:
 *	ref != NULL.
 */

/*
 * void
 * isc_refcount_decrement(isc_refcount_t *ref, unsigned int *targetp);
 *
 * Decrements the reference count,  returning the new value in targetp if it's
 * not NULL.
 *
 * Requires:
 *	ref != NULL.
 */

/*
 * Sample implementations
 */
#ifdef ISC_PLATFORM_USETHREADS

#if defined(ISC_PLATFORM_HAVESTDATOMIC)
# define ISC_REFCOUNT_HAVEATOMIC 1
# define ISC_REFCOUNT_HAVESTDATOMIC 1
#else /* defined(ISC_PLATFORM_HAVESTDATOMIC) */
# if defined(ISC_PLATFORM_HAVEXADD)
#  define ISC_REFCOUNT_HAVEATOMIC 1
# endif /* defined(ISC_PLATFORM_HAVEXADD */
#endif /* !defined(ISC_REFCOUNT_HAVEATOMIC) */

#if defined(ISC_REFCOUNT_HAVEATOMIC)

typedef struct isc_refcount {
#if defined(ISC_REFCOUNT_HAVESTDATOMIC)
	atomic_int_fast32_t refs;
#else
	int32_t refs;
#endif
} isc_refcount_t;

#if defined(ISC_REFCOUNT_HAVESTDATOMIC)

#define isc_refcount_current(rp)					\
	((unsigned int)(atomic_load_explicit(&(rp)->refs,		\
					     memory_order_acquire)))
#define isc_refcount_destroy(rp) ISC_REQUIRE(isc_refcount_current(rp) == 0)

#define isc_refcount_increment0(rp, tp)				\
	do {							\
		unsigned int *_tmp = (unsigned int *)(tp);	\
		int32_t prev;				\
		prev = atomic_fetch_add_explicit		\
			(&(rp)->refs, 1, memory_order_relaxed); \
		if (_tmp != NULL)				\
			*_tmp = prev + 1;			\
	} while (0)

#define isc_refcount_increment(rp, tp)				\
	do {							\
		unsigned int *_tmp = (unsigned int *)(tp);	\
		int32_t prev;				\
		prev = atomic_fetch_add_explicit		\
			(&(rp)->refs, 1, memory_order_relaxed); \
		ISC_REQUIRE(prev > 0);				\
		if (_tmp != NULL)				\
			*_tmp = prev + 1;			\
	} while (0)

#define isc_refcount_decrement(rp, tp)				\
	do {							\
		unsigned int *_tmp = (unsigned int *)(tp);	\
		int32_t prev;				\
		prev = atomic_fetch_sub_explicit		\
			(&(rp)->refs, 1, memory_order_acq_rel); \
		ISC_REQUIRE(prev > 0);				\
		if (_tmp != NULL)				\
			*_tmp = prev - 1;			\
	} while (0)

#else /* defined(ISC_REFCOUNT_HAVESTDATOMIC) */

#define isc_refcount_current(rp)				\
	((unsigned int)(isc_atomic_xadd(&(rp)->refs, 0)))
#define isc_refcount_destroy(rp) ISC_REQUIRE(isc_refcount_current(rp) == 0)

#define isc_refcount_increment0(rp, tp)				\
	do {							\
		unsigned int *_tmp = (unsigned int *)(tp);	\
		int32_t prev;				\
		prev = isc_atomic_xadd(&(rp)->refs, 1);		\
		if (_tmp != NULL)				\
			*_tmp = prev + 1;			\
	} while (0)

#define isc_refcount_increment(rp, tp)				\
	do {							\
		unsigned int *_tmp = (unsigned int *)(tp);	\
		int32_t prev;				\
		prev = isc_atomic_xadd(&(rp)->refs, 1);		\
		ISC_REQUIRE(prev > 0);				\
		if (_tmp != NULL)				\
			*_tmp = prev + 1;			\
	} while (0)

#define isc_refcount_decrement(rp, tp)				\
	do {							\
		unsigned int *_tmp = (unsigned int *)(tp);	\
		int32_t prev;				\
		prev = isc_atomic_xadd(&(rp)->refs, -1);	\
		ISC_REQUIRE(prev > 0);				\
		if (_tmp != NULL)				\
			*_tmp = prev - 1;			\
	} while (0)

#endif /* defined(ISC_REFCOUNT_HAVESTDATOMIC) */

#else /* defined(ISC_REFCOUNT_HAVEATOMIC) */

typedef struct isc_refcount {
	int refs;
	isc_mutex_t lock;
} isc_refcount_t;

/*% Destroys a reference counter. */
#define isc_refcount_destroy(rp)					\
	do {								\
		isc_result_t _result;					\
		ISC_REQUIRE((rp)->refs == 0);				\
		_result = isc_mutex_destroy(&(rp)->lock);		\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
	} while (0)

unsigned int isc_refcount_current(isc_refcount_t *rp);

/*%
 * Increments the reference count, returning the new value in
 * 'tp' if it's not NULL.
 */
#define isc_refcount_increment0(rp, tp)					\
	do {								\
		isc_result_t _result;					\
		unsigned int *_tmp = (unsigned int *)(tp);		\
		_result = isc_mutex_lock(&(rp)->lock);			\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
		++((rp)->refs);						\
		if (_tmp != NULL)					\
			*_tmp = ((rp)->refs);				\
		_result = isc_mutex_unlock(&(rp)->lock);		\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
	} while (0)

#define isc_refcount_increment(rp, tp)					\
	do {								\
		isc_result_t _result;					\
		unsigned int *_tmp = (unsigned int *)(tp);		\
		_result = isc_mutex_lock(&(rp)->lock);			\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
		ISC_REQUIRE((rp)->refs > 0);				\
		++((rp)->refs);						\
		if (_tmp != NULL)					\
			*_tmp = ((rp)->refs);				\
		_result = isc_mutex_unlock(&(rp)->lock);		\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
	} while (0)

/*%
 * Decrements the reference count, returning the new value in 'tp'
 * if it's not NULL.
 */
#define isc_refcount_decrement(rp, tp)					\
	do {								\
		isc_result_t _result;					\
		unsigned int *_tmp = (unsigned int *)(tp);		\
		_result = isc_mutex_lock(&(rp)->lock);			\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
		ISC_REQUIRE((rp)->refs > 0);				\
		--((rp)->refs);						\
		if (_tmp != NULL)					\
			*_tmp = ((rp)->refs);				\
		_result = isc_mutex_unlock(&(rp)->lock);		\
		ISC_ERROR_RUNTIMECHECK(_result == ISC_R_SUCCESS);	\
	} while (0)

#endif /* defined(ISC_REFCOUNT_ATOMIC) */

#else  /* ISC_PLATFORM_USETHREADS */

typedef struct isc_refcount {
	int refs;
} isc_refcount_t;

#define isc_refcount_destroy(rp) ISC_REQUIRE((rp)->refs == 0)
#define isc_refcount_current(rp) ((unsigned int)((rp)->refs))

#define isc_refcount_increment0(rp, tp)					\
	do {								\
		unsigned int *_tmp = (unsigned int *)(tp);		\
		int _n = ++(rp)->refs;					\
		if (_tmp != NULL)					\
			*_tmp = _n;					\
	} while (0)

#define isc_refcount_increment(rp, tp)					\
	do {								\
		unsigned int *_tmp = (unsigned int *)(tp);		\
		int _n;							\
		ISC_REQUIRE((rp)->refs > 0);				\
		_n = ++(rp)->refs;					\
		if (_tmp != NULL)					\
			*_tmp = _n;					\
	} while (0)

#define isc_refcount_decrement(rp, tp)					\
	do {								\
		unsigned int *_tmp = (unsigned int *)(tp);		\
		int _n;							\
		ISC_REQUIRE((rp)->refs > 0);				\
		_n = --(rp)->refs;					\
		if (_tmp != NULL)					\
			*_tmp = _n;					\
	} while (0)

#endif /* ISC_PLATFORM_USETHREADS */

isc_result_t
isc_refcount_init(isc_refcount_t *ref, unsigned int n);

ISC_LANG_ENDDECLS

#endif /* ISC_REFCOUNT_H */