ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / include / bind9 / isc

/*
 * 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 http://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef ISC_MUTEX_H
#define ISC_MUTEX_H 1

/*! \file */

#include <pthread.h>
#include <stdio.h>

#include <isc/lang.h>
#include <isc/result.h>		/* for ISC_R_ codes */

ISC_LANG_BEGINDECLS

/*!
 * Supply mutex attributes that enable deadlock detection
 * (helpful when debugging).  This is system dependent and
 * currently only supported on NetBSD.
 */
#if ISC_MUTEX_DEBUG && defined(__NetBSD__) && defined(PTHREAD_MUTEX_ERRORCHECK)
extern pthread_mutexattr_t isc__mutex_attrs;
#define ISC__MUTEX_ATTRS &isc__mutex_attrs
#else
#define ISC__MUTEX_ATTRS NULL
#endif

/* XXX We could do fancier error handling... */

/*!
 * Define ISC_MUTEX_PROFILE to turn on profiling of mutexes by line.  When
 * enabled, isc_mutex_stats() can be used to print a table showing the
 * number of times each type of mutex was locked and the amount of time
 * waiting to obtain the lock.
 */
#ifndef ISC_MUTEX_PROFILE
#define ISC_MUTEX_PROFILE 0
#endif

#if ISC_MUTEX_PROFILE
typedef struct isc_mutexstats isc_mutexstats_t;

typedef struct {
	pthread_mutex_t		mutex;	/*%< The actual mutex. */
	isc_mutexstats_t *	stats;	/*%< Mutex statistics. */
} isc_mutex_t;
#else
typedef pthread_mutex_t	isc_mutex_t;
#endif

#if ISC_MUTEX_PROFILE
#define isc_mutex_init(mp) \
	isc_mutex_init_profile((mp), __FILE__, __LINE__)
#else
#if ISC_MUTEX_DEBUG && defined(PTHREAD_MUTEX_ERRORCHECK)
#define isc_mutex_init(mp) \
	isc_mutex_init_errcheck((mp))
#else
#define isc_mutex_init(mp) \
	isc__mutex_init((mp), __FILE__, __LINE__)
isc_result_t isc__mutex_init(isc_mutex_t *mp, const char *file, unsigned int line);
#endif
#endif

#if ISC_MUTEX_PROFILE
#define isc_mutex_lock(mp) \
	isc_mutex_lock_profile((mp), __FILE__, __LINE__)
#else
#define isc_mutex_lock(mp) \
	((pthread_mutex_lock((mp)) == 0) ? \
	 ISC_R_SUCCESS : ISC_R_UNEXPECTED)
#endif

#if ISC_MUTEX_PROFILE
#define isc_mutex_unlock(mp) \
	isc_mutex_unlock_profile((mp), __FILE__, __LINE__)
#else
#define isc_mutex_unlock(mp) \
	((pthread_mutex_unlock((mp)) == 0) ? \
	 ISC_R_SUCCESS : ISC_R_UNEXPECTED)
#endif

#if ISC_MUTEX_PROFILE
#define isc_mutex_trylock(mp) \
	((pthread_mutex_trylock((&(mp)->mutex)) == 0) ? \
	 ISC_R_SUCCESS : ISC_R_LOCKBUSY)
#else
#define isc_mutex_trylock(mp) \
	((pthread_mutex_trylock((mp)) == 0) ? \
	 ISC_R_SUCCESS : ISC_R_LOCKBUSY)
#endif

#if ISC_MUTEX_PROFILE
#define isc_mutex_destroy(mp) \
	((pthread_mutex_destroy((&(mp)->mutex)) == 0) ? \
	 ISC_R_SUCCESS : ISC_R_UNEXPECTED)
#else
#define isc_mutex_destroy(mp) \
	((pthread_mutex_destroy((mp)) == 0) ? \
	 ISC_R_SUCCESS : ISC_R_UNEXPECTED)
#endif

#if ISC_MUTEX_PROFILE
#define isc_mutex_stats(fp) isc_mutex_statsprofile(fp);
#else
#define isc_mutex_stats(fp)
#endif

#if ISC_MUTEX_PROFILE

isc_result_t
isc_mutex_init_profile(isc_mutex_t *mp, const char * _file, int _line);
isc_result_t
isc_mutex_lock_profile(isc_mutex_t *mp, const char * _file, int _line);
isc_result_t
isc_mutex_unlock_profile(isc_mutex_t *mp, const char * _file, int _line);

void
isc_mutex_statsprofile(FILE *fp);

isc_result_t
isc_mutex_init_errcheck(isc_mutex_t *mp);

#endif /* ISC_MUTEX_PROFILE */

ISC_LANG_ENDDECLS
#endif /* ISC_MUTEX_H */

[-] netscope.h [edit]
[-] taskpool.h [edit]
[-] netdb.h [edit]
[-] md5.h [edit]
[-] file.h [edit]
[-] version.h [edit]
[-] int.h [edit]
[-] sha2.h [edit]
[-] region.h [edit]
[-] aes.h [edit]
[-] string.h [edit]
[-] socket.h [edit]
[-] keyboard.h [edit]
[-] base32.h [edit]
[-] bufferlist.h [edit]
[-] iterated_hash.h [edit]
[-] magic.h [edit]
[-] tm.h [edit]
[-] serial.h [edit]
[-] errno2result.h [edit]
[-] resource.h [edit]
[-] stats.h [edit]
[+] ..
[-] heap.h [edit]
[-] base64.h [edit]
[-] ratelimiter.h [edit]
[-] stdtime.h [edit]
[-] mutexblock.h [edit]
[-] sockaddr.h [edit]
[-] mem.h [edit]
[-] platform.h [edit]
[-] errno.h [edit]
[-] regex.h [edit]
[-] hex.h [edit]
[-] result.h [edit]
[-] radix.h [edit]
[-] crc64.h [edit]
[-] atomic.h [edit]
[-] fsaccess.h [edit]
[-] thread.h [edit]
[-] stat.h [edit]
[-] xml.h [edit]
[-] boolean.h [edit]
[-] ht.h [edit]
[-] lang.h [edit]
[-] offset.h [edit]
[-] log.h [edit]
[-] refcount.h [edit]
[-] time.h [edit]
[-] bind9.h [edit]
[-] quota.h [edit]
[-] httpd.h [edit]
[-] strerror.h [edit]
[-] hash.h [edit]
[-] types.h [edit]
[-] eventclass.h [edit]
[-] hmacsha.h [edit]
[-] pool.h [edit]
[-] task.h [edit]
[-] counter.h [edit]
[-] msgs.h [edit]
[-] stdlib.h [edit]
[-] syslog.h [edit]
[-] likely.h [edit]
[-] sha1.h [edit]
[-] timer.h [edit]
[-] lfsr.h [edit]
[-] safe.h [edit]
[-] stdio.h [edit]
[-] os.h [edit]
[-] condition.h [edit]
[-] rwlock.h [edit]
[-] meminfo.h [edit]
[-] symtab.h [edit]
[-] mutex.h [edit]
[-] print.h [edit]
[-] backtrace.h [edit]
[-] json.h [edit]
[-] ondestroy.h [edit]
[-] formatcheck.h [edit]
[-] event.h [edit]
[-] once.h [edit]
[-] net.h [edit]
[-] error.h [edit]
[-] entropy.h [edit]
[-] parseint.h [edit]
[-] app.h [edit]
[-] lib.h [edit]
[-] assertions.h [edit]
[-] commandline.h [edit]
[-] msgcat.h [edit]
[-] lex.h [edit]
[-] hmacmd5.h [edit]
[-] interfaceiter.h [edit]
[-] netaddr.h [edit]
[-] random.h [edit]
[-] dir.h [edit]
[-] list.h [edit]
[-] util.h [edit]
[-] queue.h [edit]
[-] portset.h [edit]
[-] deprecated.h [edit]
[-] buffer.h [edit]
[-] resultclass.h [edit]