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Name	Size	Permission
aes.h	1.05 KB	-rw-r--r--
app.h	10.23 KB	-rw-r--r--
assertions.h	2.78 KB	-rw-r--r--
atomic.h	4.15 KB	-rw-r--r--
backtrace.h	3.8 KB	-rw-r--r--
base32.h	3.94 KB	-rw-r--r--
base64.h	2.39 KB	-rw-r--r--
bind9.h	849 B	-rw-r--r--
boolean.h	746 B	-rw-r--r--
buffer.h	25.69 KB	-rw-r--r--
bufferlist.h	1.42 KB	-rw-r--r--
commandline.h	1.69 KB	-rw-r--r--
condition.h	1.44 KB	-rw-r--r--
counter.h	1.88 KB	-rw-r--r--
crc64.h	986 B	-rw-r--r--
deprecated.h	622 B	-rw-r--r--
dir.h	1.96 KB	-rw-r--r--
entropy.h	8.76 KB	-rw-r--r--
errno.h	658 B	-rw-r--r--
errno2result.h	893 B	-rw-r--r--
error.h	1.4 KB	-rw-r--r--
event.h	2.98 KB	-rw-r--r--
eventclass.h	1.35 KB	-rw-r--r--
file.h	11.43 KB	-rw-r--r--
formatcheck.h	892 B	-rw-r--r--
fsaccess.h	7.25 KB	-rw-r--r--
hash.h	7.52 KB	-rw-r--r--
heap.h	5.14 KB	-rw-r--r--
hex.h	2.33 KB	-rw-r--r--
hmacmd5.h	1.75 KB	-rw-r--r--
hmacsha.h	4.44 KB	-rw-r--r--
ht.h	4.29 KB	-rw-r--r--
httpd.h	2.26 KB	-rw-r--r--
int.h	1.37 KB	-rw-r--r--
interfaceiter.h	3.03 KB	-rw-r--r--
iterated_hash.h	1.02 KB	-rw-r--r--
json.h	1.42 KB	-rw-r--r--
keyboard.h	976 B	-rw-r--r--
lang.h	636 B	-rw-r--r--
lex.h	9.42 KB	-rw-r--r--
lfsr.h	2.88 KB	-rw-r--r--
lib.h	1.04 KB	-rw-r--r--
likely.h	718 B	-rw-r--r--
list.h	5.65 KB	-rw-r--r--
log.h	28.06 KB	-rw-r--r--
magic.h	993 B	-rw-r--r--
md5.h	2.34 KB	-rw-r--r--
mem.h	20.63 KB	-rw-r--r--
meminfo.h	690 B	-rw-r--r--
msgcat.h	2.66 KB	-rw-r--r--
msgs.h	8.22 KB	-rw-r--r--
mutex.h	3.44 KB	-rw-r--r--
mutexblock.h	1.34 KB	-rw-r--r--
net.h	10.32 KB	-rw-r--r--
netaddr.h	4.56 KB	-rw-r--r--
netdb.h	862 B	-rw-r--r--
netscope.h	947 B	-rw-r--r--
offset.h	699 B	-rw-r--r--
once.h	981 B	-rw-r--r--
ondestroy.h	2.79 KB	-rw-r--r--
os.h	670 B	-rw-r--r--
parseint.h	1.49 KB	-rw-r--r--
platform.h	9.31 KB	-rw-r--r--
pool.h	3.42 KB	-rw-r--r--
portset.h	3.21 KB	-rw-r--r--
print.h	2.49 KB	-rw-r--r--
queue.h	4.66 KB	-rw-r--r--
quota.h	2.29 KB	-rw-r--r--
radix.h	6.37 KB	-rw-r--r--
random.h	2.99 KB	-rw-r--r--
ratelimiter.h	3.38 KB	-rw-r--r--
refcount.h	7.89 KB	-rw-r--r--
regex.h	766 B	-rw-r--r--
region.h	1.99 KB	-rw-r--r--
resource.h	2.8 KB	-rw-r--r--
result.h	4.62 KB	-rw-r--r--
resultclass.h	1.56 KB	-rw-r--r--
rwlock.h	3.6 KB	-rw-r--r--
safe.h	1.21 KB	-rw-r--r--
serial.h	1.4 KB	-rw-r--r--
sha1.h	1.52 KB	-rw-r--r--
sha2.h	5.65 KB	-rw-r--r--
sockaddr.h	6 KB	-rw-r--r--
socket.h	35.81 KB	-rw-r--r--
stat.h	805 B	-rw-r--r--
stats.h	3.02 KB	-rw-r--r--
stdio.h	1.74 KB	-rw-r--r--
stdlib.h	703 B	-rw-r--r--
stdtime.h	1.3 KB	-rw-r--r--
strerror.h	776 B	-rw-r--r--
string.h	5.94 KB	-rw-r--r--
symtab.h	4.21 KB	-rw-r--r--
syslog.h	843 B	-rw-r--r--
task.h	21.08 KB	-rw-r--r--
taskpool.h	3.61 KB	-rw-r--r--
thread.h	1.47 KB	-rw-r--r--
time.h	8.66 KB	-rw-r--r--
timer.h	10.54 KB	-rw-r--r--
tm.h	894 B	-rw-r--r--
types.h	5.54 KB	-rw-r--r--
util.h	7.49 KB	-rw-r--r--
version.h	688 B	-rw-r--r--
xml.h	1.07 KB	-rw-r--r--

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

#ifndef ISC_ATOMIC_H
#define ISC_ATOMIC_H 1

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

#ifdef ISC_PLATFORM_USEGCCASM
/*
 * This routine atomically increments the value stored in 'p' by 'val', and
 * returns the previous value.
 */
static __inline__ isc_int32_t
isc_atomic_xadd(isc_int32_t *p, isc_int32_t val) {
	isc_int32_t prev = val;

__asm__ volatile(
#ifdef ISC_PLATFORM_USETHREADS
		"lock;"
#endif
		"xadd %0, %1"
		:"=q"(prev)
		:"m"(*p), "0"(prev)
		:"memory", "cc");

return (prev);
}

#ifdef ISC_PLATFORM_HAVEXADDQ
static __inline__ isc_int64_t
isc_atomic_xaddq(isc_int64_t *p, isc_int64_t val) {
	isc_int64_t prev = val;

__asm__ volatile(
#ifdef ISC_PLATFORM_USETHREADS
	    "lock;"
#endif
	    "xaddq %0, %1"
	    :"=q"(prev)
	    :"m"(*p), "0"(prev)
	    :"memory", "cc");

return (prev);
}
#endif /* ISC_PLATFORM_HAVEXADDQ */

/*
 * This routine atomically stores the value 'val' in 'p' (32-bit version).
 */
static __inline__ void
isc_atomic_store(isc_int32_t *p, isc_int32_t val) {
	__asm__ volatile(
#ifdef ISC_PLATFORM_USETHREADS
		/*
		 * xchg should automatically lock memory, but we add it
		 * explicitly just in case (it at least doesn't harm)
		 */
		"lock;"
#endif

"xchgl %1, %0"
		:
		: "r"(val), "m"(*p)
		: "memory");
}

#ifdef ISC_PLATFORM_HAVEATOMICSTOREQ
/*
 * This routine atomically stores the value 'val' in 'p' (64-bit version).
 */
static __inline__ void
isc_atomic_storeq(isc_int64_t *p, isc_int64_t val) {
	__asm__ volatile(
#ifdef ISC_PLATFORM_USETHREADS
		/*
		 * xchg should automatically lock memory, but we add it
		 * explicitly just in case (it at least doesn't harm)
		 */
		"lock;"
#endif

"xchgq %1, %0"
		:
		: "r"(val), "m"(*p)
		: "memory");
}
#endif /* ISC_PLATFORM_HAVEATOMICSTOREQ */

/*
 * This routine atomically replaces the value in 'p' with 'val', if the
 * original value is equal to 'cmpval'.  The original value is returned in any
 * case.
 */
static __inline__ isc_int32_t
isc_atomic_cmpxchg(isc_int32_t *p, isc_int32_t cmpval, isc_int32_t val) {
	__asm__ volatile(
#ifdef ISC_PLATFORM_USETHREADS
		"lock;"
#endif
		"cmpxchgl %1, %2"
		: "=a"(cmpval)
		: "r"(val), "m"(*p), "a"(cmpval)
		: "memory");

return (cmpval);
}

#elif defined(ISC_PLATFORM_USESTDASM)
/*
 * The followings are "generic" assembly code which implements the same
 * functionality in case the gcc extension cannot be used.  It should be
 * better to avoid inlining below, since we directly refer to specific
 * positions of the stack frame, which would not actually point to the
 * intended address in the embedded mnemonic.
 */
static isc_int32_t
isc_atomic_xadd(isc_int32_t *p, isc_int32_t val) {
	(void)(p);
	(void)(val);

__asm (
		"movl 8(%ebp), %ecx\n"
		"movl 12(%ebp), %edx\n"
#ifdef ISC_PLATFORM_USETHREADS
		"lock;"
#endif
		"xadd %edx, (%ecx)\n"

/*
		 * set the return value directly in the register so that we
		 * can avoid guessing the correct position in the stack for a
		 * local variable.
		 */
		"movl %edx, %eax"
		);
}

static void
isc_atomic_store(isc_int32_t *p, isc_int32_t val) {
	(void)(p);
	(void)(val);

__asm (
		"movl 8(%ebp), %ecx\n"
		"movl 12(%ebp), %edx\n"
#ifdef ISC_PLATFORM_USETHREADS
		"lock;"
#endif
		"xchgl (%ecx), %edx\n"
		);
}

static isc_int32_t
isc_atomic_cmpxchg(isc_int32_t *p, isc_int32_t cmpval, isc_int32_t val) {
	(void)(p);
	(void)(cmpval);
	(void)(val);

__asm (
		"movl 8(%ebp), %ecx\n"
		"movl 12(%ebp), %eax\n"	/* must be %eax for cmpxchgl */
		"movl 16(%ebp), %edx\n"
#ifdef ISC_PLATFORM_USETHREADS
		"lock;"
#endif

/*
		 * If (%ecx) == %eax then (%ecx) := %edx.
		 % %eax is set to old (%ecx), which will be the return value.
		 */
		"cmpxchgl %edx, (%ecx)"
		);
}
#else /* !ISC_PLATFORM_USEGCCASM && !ISC_PLATFORM_USESTDASM */

#error "unsupported compiler.  disable atomic ops by --disable-atomic"

#endif
#endif /* ISC_ATOMIC_H */

${this.title}

Code Editor : atomic.h