Gecko [ www.agenciac4designer.com ]

Name	Size	Permission
aes.h	1015 B	-rw-r--r--
align.h	569 B	-rw-r--r--
app.h	6.97 KB	-rw-r--r--
assertions.h	2.17 KB	-rw-r--r--
astack.h	1.11 KB	-rw-r--r--
atomic.h	3.01 KB	-rw-r--r--
backtrace.h	3.8 KB	-rw-r--r--
barrier.h	1.03 KB	-rw-r--r--
base32.h	4.35 KB	-rw-r--r--
base64.h	2.8 KB	-rw-r--r--
bind9.h	829 B	-rw-r--r--
buffer.h	29.91 KB	-rw-r--r--
bufferlist.h	1.42 KB	-rw-r--r--
cmocka.h	1.35 KB	-rw-r--r--
commandline.h	1.67 KB	-rw-r--r--
condition.h	1.87 KB	-rw-r--r--
counter.h	1.88 KB	-rw-r--r--
crc64.h	998 B	-rw-r--r--
deprecated.h	662 B	-rw-r--r--
dir.h	1.51 KB	-rw-r--r--
endian.h	4.75 KB	-rw-r--r--
errno.h	659 B	-rw-r--r--
errno2result.h	901 B	-rw-r--r--
error.h	1.4 KB	-rw-r--r--
event.h	3.36 KB	-rw-r--r--
eventclass.h	1.41 KB	-rw-r--r--
file.h	11.4 KB	-rw-r--r--
formatcheck.h	940 B	-rw-r--r--
fsaccess.h	7.28 KB	-rw-r--r--
fuzz.h	593 B	-rw-r--r--
hash.h	1.61 KB	-rw-r--r--
heap.h	5.14 KB	-rw-r--r--
hex.h	2.74 KB	-rw-r--r--
hmac.h	3.88 KB	-rw-r--r--
hp.h	4.48 KB	-rw-r--r--
ht.h	4.38 KB	-rw-r--r--
httpd.h	2.24 KB	-rw-r--r--
interfaceiter.h	3.07 KB	-rw-r--r--
iterated_hash.h	933 B	-rw-r--r--
lang.h	686 B	-rw-r--r--
lex.h	9.77 KB	-rw-r--r--
lfsr.h	2.89 KB	-rw-r--r--
lib.h	1.13 KB	-rw-r--r--
likely.h	868 B	-rw-r--r--
list.h	7.9 KB	-rw-r--r--
log.h	25.88 KB	-rw-r--r--
magic.h	999 B	-rw-r--r--
managers.h	776 B	-rw-r--r--
md.h	5.63 KB	-rw-r--r--
mem.h	17.66 KB	-rw-r--r--
meminfo.h	710 B	-rw-r--r--
mutex.h	4.08 KB	-rw-r--r--
mutexatomic.h	9.56 KB	-rw-r--r--
mutexblock.h	1.13 KB	-rw-r--r--
net.h	8.36 KB	-rw-r--r--
netaddr.h	4.67 KB	-rw-r--r--
netdb.h	860 B	-rw-r--r--
netmgr.h	15.36 KB	-rw-r--r--
netscope.h	966 B	-rw-r--r--
nonce.h	743 B	-rw-r--r--
offset.h	687 B	-rw-r--r--
once.h	767 B	-rw-r--r--
os.h	765 B	-rw-r--r--
parseint.h	1.5 KB	-rw-r--r--
platform.h	1.82 KB	-rw-r--r--
pool.h	3.41 KB	-rw-r--r--
portset.h	3.22 KB	-rw-r--r--
print.h	680 B	-rw-r--r--
queue.h	1.31 KB	-rw-r--r--
quota.h	3.48 KB	-rw-r--r--
radix.h	6.85 KB	-rw-r--r--
random.h	1.45 KB	-rw-r--r--
ratelimiter.h	3.41 KB	-rw-r--r--
refcount.h	4.98 KB	-rw-r--r--
regex.h	767 B	-rw-r--r--
region.h	2.18 KB	-rw-r--r--
resource.h	2.79 KB	-rw-r--r--
result.h	5.45 KB	-rw-r--r--
resultclass.h	1.56 KB	-rw-r--r--
rwlock.h	2.48 KB	-rw-r--r--
safe.h	1.12 KB	-rw-r--r--
serial.h	1.33 KB	-rw-r--r--
siphash.h	916 B	-rw-r--r--
sockaddr.h	6.13 KB	-rw-r--r--
socket.h	23.55 KB	-rw-r--r--
stat.h	803 B	-rw-r--r--
stats.h	6.53 KB	-rw-r--r--
stdatomic.h	8.9 KB	-rw-r--r--
stdio.h	1.69 KB	-rw-r--r--
stdtime.h	1.36 KB	-rw-r--r--
strerr.h	575 B	-rw-r--r--
string.h	851 B	-rw-r--r--
symtab.h	4.22 KB	-rw-r--r--
syslog.h	843 B	-rw-r--r--
task.h	16.72 KB	-rw-r--r--
taskpool.h	3.2 KB	-rw-r--r--
thread.h	1.86 KB	-rw-r--r--
time.h	10.85 KB	-rw-r--r--
timer.h	7.77 KB	-rw-r--r--
tm.h	894 B	-rw-r--r--
types.h	5.72 KB	-rw-r--r--
url.h	2.62 KB	-rw-r--r--
utf8.h	928 B	-rw-r--r--
util.h	13.96 KB	-rw-r--r--
version.h	499 B	-rw-r--r--

Code Editor : 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 */

${this.title}

Code Editor : symtab.h