FM / isc

/usr/include/bind9/isc

Name	Size	Mode	Actions
aes.h	1015	0644	edit dl rm
align.h	569	0644	edit dl rm
app.h	7139	0644	edit dl rm
assertions.h	2227	0644	edit dl rm
astack.h	1137	0644	edit dl rm
atomic.h	3082	0644	edit dl rm
backtrace.h	3894	0644	edit dl rm
barrier.h	1052	0644	edit dl rm
base32.h	4453	0644	edit dl rm
base64.h	2865	0644	edit dl rm
bind9.h	829	0644	edit dl rm
buffer.h	30625	0644	edit dl rm
bufferlist.h	1453	0644	edit dl rm
cmocka.h	1383	0644	edit dl rm
commandline.h	1711	0644	edit dl rm
condition.h	1914	0644	edit dl rm
counter.h	1922	0644	edit dl rm
crc64.h	998	0644	edit dl rm
deprecated.h	662	0644	edit dl rm
dir.h	1545	0644	edit dl rm
endian.h	4868	0644	edit dl rm
errno.h	659	0644	edit dl rm
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file.h	11669	0644	edit dl rm
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fsaccess.h	7453	0644	edit dl rm
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ht.h	4485	0644	edit dl rm
httpd.h	2291	0644	edit dl rm
interfaceiter.h	3141	0644	edit dl rm
iterated_hash.h	933	0644	edit dl rm
lang.h	686	0644	edit dl rm
lex.h	10004	0644	edit dl rm
lfsr.h	2955	0644	edit dl rm
lib.h	1155	0644	edit dl rm
likely.h	868	0644	edit dl rm
list.h	8085	0644	edit dl rm
log.h	26497	0644	edit dl rm
magic.h	999	0644	edit dl rm
managers.h	776	0644	edit dl rm
md.h	5760	0644	edit dl rm
mem.h	18086	0644	edit dl rm
meminfo.h	710	0644	edit dl rm
mutex.h	4178	0644	edit dl rm
mutexatomic.h	9790	0644	edit dl rm
mutexblock.h	1162	0644	edit dl rm
net.h	8564	0644	edit dl rm
netaddr.h	4786	0644	edit dl rm
netdb.h	860	0644	edit dl rm
netmgr.h	15732	0644	edit dl rm
netscope.h	966	0644	edit dl rm
nonce.h	743	0644	edit dl rm
offset.h	687	0644	edit dl rm
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parseint.h	1541	0644	edit dl rm
platform.h	1859	0644	edit dl rm
pool.h	3491	0644	edit dl rm
portset.h	3294	0644	edit dl rm
print.h	680	0644	edit dl rm
queue.h	1337	0644	edit dl rm
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random.h	1482	0644	edit dl rm
ratelimiter.h	3492	0644	edit dl rm
refcount.h	5103	0644	edit dl rm
regex.h	767	0644	edit dl rm
region.h	2234	0644	edit dl rm
resource.h	2860	0644	edit dl rm
result.h	5580	0644	edit dl rm
resultclass.h	1597	0644	edit dl rm
rwlock.h	2535	0644	edit dl rm
safe.h	1145	0644	edit dl rm
serial.h	1367	0644	edit dl rm
siphash.h	916	0644	edit dl rm
sockaddr.h	6275	0644	edit dl rm
socket.h	24120	0644	edit dl rm
stat.h	803	0644	edit dl rm
stats.h	6689	0644	edit dl rm
stdatomic.h	9116	0644	edit dl rm
stdio.h	1728	0644	edit dl rm
stdtime.h	1392	0644	edit dl rm
strerr.h	575	0644	edit dl rm
string.h	851	0644	edit dl rm
symtab.h	4325	0644	edit dl rm
syslog.h	843	0644	edit dl rm
task.h	17126	0644	edit dl rm
taskpool.h	3281	0644	edit dl rm
thread.h	1908	0644	edit dl rm
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tm.h	894	0644	edit dl rm
types.h	5854	0644	edit dl rm
url.h	2681	0644	edit dl rm
utf8.h	928	0644	edit dl rm
util.h	14291	0644	edit dl rm
version.h	499	0644	edit dl rm

Edit: /usr/include/bind9/isc/symtab.h (4325B)

/*
 * 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 */

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