File Manager

X7ROOT File Manager

Current Path: /usr/include/bind9/isc

📁 ..
📄 aes.h(1.05 KB)
📄 app.h(10.23 KB)
📄 assertions.h(2.84 KB)
📄 atomic.h(4.07 KB)
📄 backtrace.h(3.8 KB)
📄 base32.h(4.35 KB)
📄 base64.h(2.8 KB)
📄 bind9.h(830 B)
📄 boolean.h(594 B)
📄 buffer.h(25.65 KB)
📄 bufferlist.h(1.42 KB)
📄 cmocka.h(1.35 KB)
📄 commandline.h(1.67 KB)
📄 condition.h(1.44 KB)
📄 counter.h(1.88 KB)
📄 crc64.h(998 B)
📄 deprecated.h(623 B)
📄 dir.h(1.56 KB)
📄 endian.h(4.67 KB)
📄 entropy.h(10.13 KB)
📄 errno.h(659 B)
📄 errno2result.h(902 B)
📄 error.h(1.4 KB)
📄 event.h(2.98 KB)
📄 eventclass.h(1.35 KB)
📄 file.h(11.39 KB)
📄 formatcheck.h(893 B)
📄 fsaccess.h(7.27 KB)
📄 hash.h(7.48 KB)
📄 heap.h(5.14 KB)
📄 hex.h(2.74 KB)
📄 hmacmd5.h(1.75 KB)
📄 hmacsha.h(4.41 KB)
📄 ht.h(4.29 KB)
📄 httpd.h(2.26 KB)
📄 int.h(1.06 KB)
📄 interfaceiter.h(3.05 KB)
📄 iterated_hash.h(1.02 KB)
📄 json.h(1.42 KB)
📄 keyboard.h(989 B)
📄 lang.h(637 B)
📄 lex.h(9.54 KB)
📄 lfsr.h(2.89 KB)
📄 lib.h(1.04 KB)
📄 likely.h(818 B)
📄 list.h(5.62 KB)
📄 log.h(28.06 KB)
📄 magic.h(994 B)
📄 md5.h(2.32 KB)
📄 mem.h(20.62 KB)
📄 meminfo.h(710 B)
📄 msgcat.h(2.66 KB)
📄 msgs.h(8.22 KB)
📄 mutex.h(3.44 KB)
📄 mutexblock.h(1.34 KB)
📄 net.h(10.29 KB)
📄 netaddr.h(4.48 KB)
📄 netdb.h(863 B)
📄 netscope.h(967 B)
📄 offset.h(700 B)
📄 once.h(983 B)
📄 ondestroy.h(2.73 KB)
📄 os.h(671 B)
📄 parseint.h(1.51 KB)
📄 platform.h(9.49 KB)
📄 pool.h(3.42 KB)
📄 portset.h(3.22 KB)
📄 print.h(2.42 KB)
📄 queue.h(5.08 KB)
📄 quota.h(2.38 KB)
📄 radix.h(6.34 KB)
📄 random.h(3.5 KB)
📄 ratelimiter.h(3.42 KB)
📄 refcount.h(8 KB)
📄 regex.h(767 B)
📄 region.h(1.99 KB)
📄 resource.h(2.79 KB)
📄 result.h(4.87 KB)
📄 resultclass.h(1.56 KB)
📄 rwlock.h(3.72 KB)
📄 safe.h(1.32 KB)
📄 serial.h(1.34 KB)
📄 sha1.h(1.52 KB)
📄 sha2.h(5.6 KB)
📄 siphash.h(734 B)
📄 sockaddr.h(5.9 KB)
📄 socket.h(35.8 KB)
📄 stat.h(806 B)
📄 stats.h(3.62 KB)
📄 stdatomic.h(5.13 KB)
📄 stdio.h(1.75 KB)
📄 stdlib.h(704 B)
📄 stdtime.h(1.04 KB)
📄 strerror.h(777 B)
📄 string.h(5.88 KB)
📄 symtab.h(4.22 KB)
📄 syslog.h(844 B)
📄 task.h(21.04 KB)
📄 taskpool.h(3.62 KB)
📄 thread.h(1.47 KB)
📄 time.h(8.67 KB)
📄 timer.h(10.54 KB)
📄 tm.h(895 B)
📄 types.h(5.64 KB)
📄 utf8.h(928 B)
📄 util.h(10.29 KB)
📄 version.h(689 B)
📄 xml.h(1.07 KB)

Editing: symtab.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_SYMTAB_H
#define ISC_SYMTAB_H 1

/*****
 ***** Module Info
 *****/

/*! \file isc/symtab.h
 * \brief Provides a simple memory-based symbol table.
 *
 * Keys are C strings, and key comparisons are case-insensitive.  A type may
 * be specified when looking up, defining, or undefining.  A type value of
 * 0 means "match any type"; any other value will only match the given
 * type.
 *
 * It's possible that a client will attempt to define a <key, type, value>
 * tuple when a tuple with the given key and type already exists in the table.
 * What to do in this case is specified by the client.  Possible policies are:
 *
 *\li	#isc_symexists_reject	Disallow the define, returning #ISC_R_EXISTS
 *\li	#isc_symexists_replace	Replace the old value with the new.  The
 *				undefine action (if provided) will be called
 *				with the old <key, type, value> tuple.
 *\li	#isc_symexists_add	Add the new tuple, leaving the old tuple in
 *				the table.  Subsequent lookups will retrieve
 *				the most-recently-defined tuple.
 *
 * A lookup of a key using type 0 will return the most-recently defined
 * symbol with that key.  An undefine of a key using type 0 will undefine the
 * most-recently defined symbol with that key.  Trying to define a key with
 * type 0 is illegal.
 *
 * The symbol table library does not make a copy the key field, so the
 * caller must ensure that any key it passes to isc_symtab_define() will not
 * change until it calls isc_symtab_undefine() or isc_symtab_destroy().
 *
 * A user-specified action will be called (if provided) when a symbol is
 * undefined.  It can be used to free memory associated with keys and/or
 * values.
 *
 * A symbol table is implemented as a hash table of lists; the size of the
 * hash table is set by the 'size' parameter to isc_symtbl_create().  When
 * the number of entries in the symbol table reaches three quarters of this
 * value, the hash table is reallocated with size doubled, in order to
 * optimize lookup performance.  This has a negative effect on insertion
 * performance, which can be mitigated by sizing the table appropriately
 * when creating it.
 *
 * \li MP:
 *	The callers of this module must ensure any required synchronization.
 *
 * \li Reliability:
 *	No anticipated impact.
 *
 * \li Resources:
 *	TBS
 *
 * \li Security:
 *	No anticipated impact.
 *
 * \li Standards:
 *	None.
 */

/***
 *** Imports.
 ***/

#include <stdbool.h>

#include <isc/lang.h>
#include <isc/types.h>

/*
 *** Symbol Tables.
 ***/
/*% Symbol table value. */
typedef union isc_symvalue {
	void *				as_pointer;
	const void *			as_cpointer;
	int				as_integer;
	unsigned int			as_uinteger;
} isc_symvalue_t;

typedef void (*isc_symtabaction_t)(char *key, unsigned int type,
				   isc_symvalue_t value, void *userarg);
/*% Symbol table exists. */
typedef enum {
	isc_symexists_reject = 0,	/*%< Disallow the define */
	isc_symexists_replace = 1,	/*%< Replace the old value with the new */
	isc_symexists_add = 2		/*%< Add the new tuple */
} isc_symexists_t;

ISC_LANG_BEGINDECLS

/*% Create a symbol table. */
isc_result_t
isc_symtab_create(isc_mem_t *mctx, unsigned int size,
		  isc_symtabaction_t undefine_action, void *undefine_arg,
		  bool case_sensitive, isc_symtab_t **symtabp);

/*% Destroy a symbol table. */
void
isc_symtab_destroy(isc_symtab_t **symtabp);

/*% Lookup a symbol table. */
isc_result_t
isc_symtab_lookup(isc_symtab_t *symtab, const char *key, unsigned int type,
		  isc_symvalue_t *value);

/*% Define a symbol table. */
isc_result_t
isc_symtab_define(isc_symtab_t *symtab, const char *key, unsigned int type,
		  isc_symvalue_t value, isc_symexists_t exists_policy);

/*% Undefine a symbol table. */
isc_result_t
isc_symtab_undefine(isc_symtab_t *symtab, const char *key, unsigned int type);

/*% Return the number of items in a symbol table. */
unsigned int
isc_symtab_count(isc_symtab_t *symtab);
ISC_LANG_ENDDECLS

#endif /* ISC_SYMTAB_H */

X7ROOT File Manager

Editing: symtab.h

Upload File

Create Folder