Paolo Bonzini 51dee5e465 qemu-thread: introduce QemuLockCnt ... A QemuLockCnt comprises a counter and a mutex, with primitives to increment and decrement the counter, and to take and release the mutex. It can be used to do lock-free visits to a data structure whenever mutexes would be too heavy-weight and the critical section is too long for RCU. This could be implemented simply by protecting the counter with the mutex, but QemuLockCnt is harder to misuse and more efficient. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20170112180800.21085-3-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2017-01-16 13:25:17 +00:00
..
acl.h	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
atomic.h	atomics: Add __nocheck atomic operations	2016-10-26 08:28:57 -07:00
base64.h	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
bcd.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
bitmap.h	bitmap: refine and move BITMAP_{FIRST/LAST}_WORD_MASK	2016-10-08 11:25:29 +03:00
bitops.h	bitops: fix rol/ror when shift is zero	2016-11-15 10:05:50 +11:00
bswap.h	bswap.h: Document cpu_to_* and *_to_cpu conversion functions	2016-07-12 15:08:53 +01:00
buffer.h	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
compatfd.h	include: Clean up includes	2016-02-23 12:43:05 +00:00
compiler.h	compiler: Swap 'public domain' header for license	2016-09-27 11:57:29 +02:00
config-file.h	Clean up header guards that don't match their file name	2016-07-12 16:19:16 +02:00
coroutine_int.h	coroutine: add a macro for the coroutine stack size	2016-09-29 14:13:39 +02:00
coroutine.h	coroutine: Introduce qemu_coroutine_enter_if_inactive()	2017-01-09 13:30:52 +01:00
crc32c.h
cutils.h	cutils: Add test for buffer_is_zero	2016-09-13 19:13:32 +02:00
envlist.h
error-report.h	qemu-error: remove dependency of stubs on monitor	2016-11-01 16:06:57 +01:00
event_notifier.h	event-notifier: Add "is_external" parameter	2016-04-22 16:43:56 +02:00
fifo8.h	Clean up header guards that don't match their file name	2016-07-12 16:19:16 +02:00
fifo32.h	hw: Clean up includes	2016-06-07 18:19:23 +03:00
fprintf-fn.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
hbitmap.h	hbitmap: serialization	2016-10-24 17:56:07 +02:00
help_option.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
host-utils.h	qemu/host-utils.h: Reduce the operation count in the fallback ctpop	2017-01-10 08:49:59 -08:00
id.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
int128.h	tcg: Add atomic128 helpers	2016-10-26 08:29:01 -07:00
iov.h	include/qemu/iov.h: Don't include qemu-common.h	2016-03-22 22:20:16 +01:00
jhash.h	Jhash: add linux kernel jhashtable in qemu	2016-09-27 17:54:21 +08:00
log.h	log: Add locking to large logging blocks	2016-11-01 10:29:03 -06:00
main-loop.h	main-loop: update comment for qemu_mutex_lock/unlock_iothread	2016-12-22 16:00:24 +01:00
memfd.h	include: Clean up includes	2016-02-23 12:43:05 +00:00
mmap-alloc.h	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
module.h	trace: provide mechanism for registering trace events	2016-10-12 09:52:50 +02:00
notify.h
option_int.h	Clean up header guards that don't match their file name	2016-07-12 16:19:16 +02:00
option.h	Clean up header guards that don't match their file name	2016-07-12 16:19:16 +02:00
osdep.h	nbd: Improve server handling of shutdown requests	2016-11-02 09:28:56 +01:00
path.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
processor.h	include/processor.h: define cpu_relax()	2016-06-11 23:10:17 +00:00
qdist.h	clean-includes: run it once more	2016-06-16 18:39:03 +02:00
qht.h	util/qht: Document memory ordering assumptions	2016-08-02 12:03:58 +02:00
queue.h	qtail: clean up direct access to tqe_prev field	2016-09-13 19:08:41 +02:00
range.h	range: Replace internal representation of Range	2016-07-04 16:49:33 +03:00
ratelimit.h	Improve block job rate limiting for small bandwidth values	2016-07-13 13:41:38 +02:00
rcu_queue.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
rcu.h	all: Remove unnecessary glib.h includes	2016-06-07 18:19:24 +03:00
readline.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
seqlock.h	seqlock: use atomic writes for the sequence	2016-10-04 10:00:26 +02:00
sockets.h	util/qemu-sockets: Make inet_connect_saddr() public	2016-10-31 16:49:13 +01:00
thread-posix.h	qemu-thread: introduce QemuRecMutex	2016-10-28 21:50:18 +08:00
thread-win32.h	qemu-thread: introduce QemuRecMutex	2016-10-28 21:50:18 +08:00
thread.h	qemu-thread: introduce QemuLockCnt	2017-01-16 13:25:17 +00:00
throttle.h	include: Clean up includes	2016-02-23 12:43:05 +00:00
timed-average.h	include: Clean up includes	2016-02-23 12:43:05 +00:00
timer.h	timer: fix misleading comment in timer.h	2016-12-22 16:00:24 +01:00
typedefs.h	exec: introduce MemoryRegionCache	2016-12-22 16:00:23 +01:00
unicode.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
uri.h	Remove unused function declarations	2016-09-15 15:32:22 +03:00
uuid.h	vl: Switch qemu_uuid to QemuUUID	2016-09-23 11:42:52 +08:00
xattr.h	include: Clean up includes	2016-02-23 12:43:05 +00:00